3 Common Nissan QR25DE Engine Problems (And How to Fix Them)

[@trssho91]

After installing my headers, I was a little uncomfortable with how close my cyl 1 pipe was to the alternator. After watching this video I picked up the heat shield and I can vouch for these guys. On top of what you had mentioned, they are very nice people with very good communication and they take a lot of pride in their products and work. I was surprised to learn each part is hand made to order. I really appreciate that I got email updates on the progress of my order, never had to wonder where my order was. I can’t express enough to support these guys and you’re getting a great product as well. :)

[@sandovalwill88]

You forgot the most common problem with the QR25DE. Which is, not replacing the upper and lower timing chains, upper and lower timing chain tensioners, exhaust cam sprocket, and lower timing chain sprocket. That rattle you hear when you cold start your car. Yup thats the main QR25DE killer. Worn and stretched timing chains with worn sprockets. I'm currently replacing everything I mentioned as I speak. Not easy by any means though. No vids about the process as detailed that would help. I have all four engne mounts removed. Motor floating on Jack. Just about to put her back together. I'd say replace every 100,000 - 200,000 miles, depending how you drive the car. But boy do these parts wear.

[@teshikofurusato4541]

How much would it cost to do this? I was quoted $1000 but on ebay theres a complete engine for $540. www.ebay.com/itm/2002-2006-NISSAN-2-5L-QR25DE-ENGINE-with-LOW-54K-MILES-for-ALTIMA-and-SENTRA/223247888069

[@sandovalwill88]

@@teshikofurusato4541 no use in getting a new engine, you will have to change all that I've mentioned anyways. I didn't pull the motor, nor did I remove the upper oil pan. I got all the parts needed for $95 new, with the timing cover, which has the oil pump attached. I'm doing all the work myself, but this job is always quoted $1000 - $1500 due to lazy mechanics labor costs. Just remove all motor mounts. Place a Jack under the engine and push engine as far as possible towards the driver side. You will have enough room to get to your timing chains. Important note, you have to change the main crankshaft and exhaust cam gears as they wear wi th the chains. Some mechanics will remove your balancer shafts or just cut the lower chain to the balancer shaft, rtv the oil pan and charge you full price. It does nothing to fix the problem whatsoever, so beware.

[@teshikofurusato4541]

@@sandovalwill88 OK thanks

[@Breadfan00]

Oh this is what happened with a model that I started at a dealership. It was pretty cold and after starting, something rattled loudly in the engine bay twice. Didn’t come back afterwards, but I’m gonna tell them that I’ll take it if they redo the chains first 👍🏼

[@Castro3868]

Your explanations of the 1st gen QR issues, are spot on. Keep up the good work and thank you for supporting SC Concepts! Feel free to contact me with any questions you may have.

[@joser6423]

Just placed my order thanks to this vid! Besides the Spec V, I've also got a DE 350z; have you any intentions in one day developing products for other Nissans?

[@Castro3868]

@@joser6423 I do! I should be starting the vq projects within the next month.

[@GPN007a]

I have a '18 Rogue and buddy you do not understand how much you are helping me here.

[@tylersime5665]

TBH I never knew about the butterfly manifold screws thanks for saving me on that one nice video as well

[@terryharrison9942]

I bought my 2003 X-Trail auto new.I,ve had no issues with it other than crank sensor and camshaft sensor.I,ve used it for several years to tow our double horse trailer as our family shows them.I have serviced it every 6000 miles since new.Castrol magnatec 10-40.It currently has 320,000kms and uses about a pint between services.Amazing machine.

[@njramsfan30]

idk how i found your channel but you brought bad some memories.. lol. i owned a 02 spec-v back in 04-05.. got rid of it around 2007.. had tons of problems. I remember i had a popping rack and pinion that was replaced under warranty.. and the noise came back. lol.... and ahh yea.. .BUTTERFLY screws.. lol..

[@stupid5231]

Also if you could do a balance shaft delete video that would be awesome. Since the only comprehensive videos I can find on it are in Spanish.

[@raymond5068]

Butterfly screws and the catalytic converter for sure. But this video is very informative about this engine as far as maintening this engine properly. I wish I would have seen this before I blew up my engine 😁. Appreciate this video and probably buying spec v again

[@126frank]

Another thing that is a must if you are going to drive them hard is to eliminate the balancer shaft. There is a kit made for it. If you don't at some point it might seize and it will cost you a new engine. If you are as lucky as I was. My balancer shaft gears broke so quick that it actually saved the engine. Still the oil catched a gray-ish color and a bunch of gear particles where in the oil pan and even got to the cylinderhead.

[@chronicblueberry]

This is really helpful. I'm new to the qr motors so maybe I'll look into getting these before doing anything els

[@johnathanlyles6073]

Please do more videos! Very helpful! And thank you for your time to go out of the way to make us these videos!

[@juliogaspar1891]

You forgot yo mention that our qr25de engines have issues with the balancer, and we could do a quick fix by cutting the small chain that goes to the balancer or that we could buy a bsr kit(balance shaft removal kit)

[@viktorrivero8264]

yeap i have altima 02 .and have deleted the balancer with jwt kit installed.And my vibrates on the idle like a bus.all motor mounts a oem and good.and yes the revs fast!)

[@Andernol]

What're some things I should look for when buying an SE-R Spec V? (Besides these things)

[@marko6718]

Broken cams, boots, hub bearings

[@marko6718]

I've seen this video before while ago and was thinking about that heat shield, then this pops up.. crazy cool video

[@blerpblorp2118]

My alternator exploded too. I have lifetime on it though so I just replaced it. But this is very good to know.

[@Versatil07]

Great to see you back. I'll be ordering this soon, been eyeing them for a bit.

[@trm4life]

Awesome information. I'm getting a 2002 SER Spec-v luckily, which has already had the engine replaced, locktite on the butterfly screws and the exhaust replaced. I did not know about the heat or oil issue. You rock!

[@TheVincentos]

please instal the plenum intake and do a video about it! I got an 04 red spec V and I love it. Keep going with the good videos.

[@arcota]

Great vid. I own a 2006 with 187k. Have some work to do now!

[@nicksta16]

A C. Just out of curiosity, Were those 187K miles on the original motor, did you blow a head gasket or anything within those miles? If not, you're one of the lucky ones. My head gasket on my original QR went at around 130K lol

[@JulioBS820]

I have a 2nd gen QR and glad i found your channel bud

[@ttwear]

Thanks man! I'm from Brazil, have a 2006 X-trail with this motor. You help me a lot with this tips :)

[@ramonnavarro9752]

The alternator has never been an issue for me either as most have commented, as a matter of fact the original alternator that came with the car from factory is still good and sits in a corner of my garage after being replaced for an upgrade. I also installed the DC headers when they first came out years ago and still had no issues for years before doing a VQ swap a couple of years ago and I still have no issues with that one either. I've never had any problems with my Spec other than wheel bearings and its been 16 years. I think a whole lot of you are buying used Specs with tons of problems or are stuck with Specs that has taken beatings. Either I am the luckiest man on earth, or maybe I did the factory maintenance at proper intervals at the dealership every time it was due and gladly paid for it - you decide............and no its not for sale!

[@meestadeuce]

Yo!!! Awesome video. I'm switching to an aftermarket manifold on my 03 Altima. I actually had a qr25 seize up while going 80 on the highway and since it was over 10 yrs ago they were still kinda expensive so i went the jdm route and got a qr20. The car has sit for over 5 yrs and im trying to make it road ready and clear all the codes and get it smoother. The last step that I think I have is to add that shield since I read the factory one won't fit and to use a spacer to fool the ecu so I don't throw a code. gonna look into the butterfly screws also. thanks! u got a new sub!

[@lopezz.3898]

Make the video I just bought a 2003 NISSAN SENTRA SE-R SPEC V

[@mattsmith2072]

Cool video. I've been turning wrenches for 15 years and have always owned Nissans. Still have my S13 convertible, B14 200SX, and B15 06 Spec-V. I've been driving my 06 Spec-V since I bought it in 2008 @10k and now it has 240k 11 years later. I only run Ardeca 5w30 and never had any issues yet. Still have factory alternator, exhaust manifold, water pump, and clutch/flywheel. I have replaced LR wheel bearing and rear calipers, but that's all stuff that wears out sooner. At 250k I'm doing a rebuild as it's starting to get some cold chain noise so I can go another 250k. If you take care of Nissan's they'll take care of you. My 95 200SX I've had for 15 years has 409k on it now and is only on it's 2nd clutch, but is getting fender rust everywhere these days.

[@miguelabrego1079]

That's impressive. Is that 240k miles or km on your spec-v

[@mattsmith2072]

@@miguelabrego1079 270K miles now. It's in my shop now to be rebuilt, the head gasket is going. My '95 200SX now has 418k miles on it and my wife is still driving it daily.

[@miguelabrego1079]

That's really impressive. Currently looking at getting an 06 spec-v with 130k but all these problems are a making me rethink that decision.

[@mattsmith2072]

@@miguelabrego1079 I said all of my stuff is original on my '06. I haven't seen any of those issues in the video. I will loctite the power valves in the intake while I have it apart, but I firmly believe beating on anything will make it break, which is most likely why I haven't seen these "issues" yet.

[@jaysonmari1051]

More videos please on preventative maintenance, great video btw!

[@Tiberiumfreek]

I'm glad I did all that I did to my QR engine. They are amazing engines, just gotta work out the stupid shit Nissan did. @ri$erboi I'd recommend to one and all with the plenum, to just convert over to the b16 plenum. Why have a remote change of screws going in, when you could have absolute 0 chance. Not just that, but the power gangs from it, are amazing for NA application. I personally have one, and its the best thing I did. I'm sure lots of people would love to see you install it anyways.

[@TheCheckit96]

I qlso would love to see the intake manifold and screws that need to be lock tited.

[@Daniel44537]

And preventetive maintinence vides would be so cool and helpful too

[@PLATINUM2U]

These engines operate best on full synthetic oil. They indeed can easily go over 400k miles with proper care

[@curtfox91]

What grade

[@PLATINUM2U]

@@curtfox91 5w-30

[@adamh9077]

How do I get one of those heat shields? The link js down and I can't find one anywhere

[@selvingarcia2017]

Duuude where did you go?!?!?! I wanna see what else you have do !!!!

[@mauricemotors8207]

Nice info the Frontier I have has the updated QR and the alternator is at the bottom under the power steering pump

[@Daniel44537]

I love these spec v videos keep it up pleasse i also have one lf these on my spec and i love the quality great product and great video 👍

[@TheCheckit96]

Thanks for the video and information. I bought a 2005 nissan x trail SE . It has the same engine. I have very little knowledge about car engines. 1. It seems to get very hot inside the engine, especially close to the alternator. The temp gauge on the dash goes upto 50% and stays constant. How can I know if it is getting too hot. Can one put some kind of thermometer in there. 2. I put the fan on and turned the temp control knob to max cool without turning on the ac. It was a warmish day and I only drove around 45 minutes and warm air coming through the vents ..a slight burning smell. This is what alarmed me and trying to figure out if it is too hot. Hence question 1. Appreciate your reply. Btw on this vehicle engine was replaced . One of the issues on previous engine was screws coming of as you described.

[@bryanmac4583]

I have an 06 altima. It's been good to me. Doesn't burn no oil what sooo ever. But I take care of it. I haven't had that alternator problem. And I also still have my stock pre cat on there

[@26bleeek]

I put red loctite glue on my butterfly screws. They will never come lose and it saves u way more time.

[@BaldVulture87]

The best fix is do to like i did and trade it for a 97 prelude, and then trade that prelude for '05 rsx premium. problem solved :D haha nice to see a video with the sentra haven't been here in a long time.

[@prm5798]

How do you get rid of the check engine light when installing the exhaust header.

[@leo89us]

You have to buy the spacer for the lower O2 sensor works great

[@cedricmiller4370]

@@leo89us will performance headers from the 1stgen qr25de fit the 2017 altima or did fitment change on the 2nd gen 2.5 engine?

[@leo89us]

@@cedricmiller4370 im not sure on that one bud

[@SeanA88]

My 06 has been pretty good but has been going through a lot oil over the past 2 years. I changed the valve cover and gasket myself with oem nissan parts. It goes through a quart every 2 months instead of every month. If I was driving the car hard and flooring it, you could smell the oil burning off of the engine if you had the windows down

[@miguelabrego1079]

How many miles does your 06 have? Have you done the catch can since then?

[@sunnydee7745]

Wonder where you've been at bro . Been awhile

[@a914freak]

If you hear a rattling around 2000 RPM's, the clock is ticking...LMAO!!

[@JayVon_Ro]

sick vid my dude

[@mikejautosandstuff3349]

Hey another good DIY video 👍 heat shield should have came in RED. LOL.

[@Castro3868]

We offer different materials as well as custom powder coating if requested.

[@jaygames1980]

Out of my two only had the catalyst problem on both. Altima and a Sentra SE-R

[@Gio-xp1ds]

Around may this yr I blew my engine after 7 years of driving my 06 Altima... replaced it & just blew it again oil on cylinder #1 😭 ima be rebuilding soon & definitely going to add a catch can locktight the butterflies

[@michaelmorell7451]

Awesome video bro. We are all being taken advantage of by the car manufacturers that sell us these cars. Regardless of state and specially in California. The system is designed to fail and cost us thousands in repair bills Car maker's make more money in Repairs, than they make in the selling of vehicles. Knowledgeable people, like the young man that made this video, need to put them on blast. Show people in video, how to avoid the problems that the car makers create. They know the fail points. Look at the young man's engine here in this video. it's a qr25, that they continue to put in cars after his for years, without any protection on the alternator They did addressed the intake. But NOT the alternators. BS huh? I have a car that has two cats on it. Each of them cost $1,200 and can only be purchased from the dealership. Because it needs to have a CARB stamp in California (CARB California Air Resource Board) Nissan and Carb won't let another manufacture make them in CA. Total BS. That same exhaust with the Catalytic Converter is $300 in Arizona. Nissan admits, and so do ALL other car manufacturers, that there engines burn oil. It says it in the manual. It's great that this young man is showing people that they need to put a catch can in between their PCV and their intake manifold. Has anybody reading this, ever cleaned your throttle bod, intake manifold, spark plugs, or your combustion chamber?????. It's all burnt oil/ carbon deposits. Once it gets past the combustion chamber, it ruins your catalytic converter Bro. I don't mean to offend you by what I have to say next about your particular car but I think it will be a plus for your Sentra.That puny catch can you have is way too small. Do some more research on them and buy two in concession. Or buy one aluminum big one they sell for turbo cars. & add another PCV. You can mount them anywhere. Also bro, extend your cold air pipe and take it downward, just below the headlight. You're robbing your engine of the purpose of a cold air intake by leaving it in the hot area. I would also recommend that you use heat wrap on your exhaust manifold , then wrap the pipes down just past your firewall. Use the gold sticker heat shield on the inside of stock heat shield. Clean them real good with a wire wheel and then clean with alcohol before using the sticker stuff. I would love for you to show people and create a special videos on why every vehicle and every engine needs a good catch can, if not two of them. People need to realize what PCV means. They also need to realize what Vacuum means. Please use any engine in your video and show how much vacuum is being sucked into the intake. Most vehicles have restrictor pieces inside those vacuum hose, to restrict the vacuum, because it's so strong. Use a vacuum checker Show the people. Use a pressure gauge after the PCV. Ot will blow your mind just at idle. Imagine 5K RPM Everyone needs to realize How much pressure is being pushed through the PCV one-way valve Then combine that with the vacuum force of a being sucked into your intake. All those pollutants are being sucked out so strongly. It contaminate your intake, your throttle body, & ruins your spark plugs. It adds carbon build up in your combustion chambers, to the tops of your Pistons and your valves. After all of that...... whatever oil that didn't fry already & gets through all that proces... Guess where it goes people. It drizzles down your exhaust pipe to your 300° to 1200°degree Catalytic converters. If the first converter & or 02 sensor doesn't bake the oil on it's Precious Metal Honeycombs, that Catalytic Converters are designed and made with. ( for others reading this. Yes, catalytic converters are made of precious metals.) If the oil gets past the 1st Cat. It will get burned in the second catalytic converter. EVERY vehicle, regardless of make. Needs to have catch cans, If not two of them. if car manufacturers would just put one large catch can on ALL cars with a sensor. It could be drained during oil changes. WHAT A CONCEPT!! Here on KZbin there is a gentleman that used Moroso catch can along with another brand after it. He was able to catch pollutants in both cans on a 5K test. That test was done on a newer GMC LS V8. Had the man put a pcv on each valve cover he would have picked up even more. Pollutants. Young man, please realize I wasn't just talking to you but two other people that made read my comment I encourage you and I will ask you please make a video letting people know what to do and how to make their car last a long time even if they just bought it. Make one for every manufacturer. put them all on blast because this PCV vacuum system is costing the public millions of dollars. I for one am SICK OF IT!!!! Oh, could you please make an additional video for everyone about VVT solonoids. Just about every vehicle has them now. Teach about a dirty VVT solenoid and what havoc it can create. How to clean them with map sensor spray, & test them with a 9v battery. Let people know how cheap it is, and how it can cause so many misdiagnosis's and cost them hundreds, if not thousands of dollars. show people that they can go straight to many parts manufacturers to get their parts cheap. Instead of the Auto Parts place down the street, or the dealer. Like Denso for example: They sell straight to the public, and it's way cheaper than the dealer or any auto parts store. If you want to pay a 75% markup go ahead and go straight to the dealer and get your DENSO OEM part. Lol Please people, we have this amazing thing in our hand and in our homes to be able to access the internet. Use it!!!!! Research. There's probably a video about it. I also have a lot of information on how to make CVT transmissions last, get more hp, & get awesome fuel mileage. Better than stock. But my novel is a bit long already.

[@michaelmorell7451]

Look at the SC concepts 1st page to see a real catch can.

[@ronstubbs7937]

Thanks Michael, you sound like you Know your Stuff very well my Friend. If you don't Mind I have some Issues myself right now that i am addressing and could use your input, knowledge and Wisdom. If you don't Mind. Ronny

[@michaelmorell7451]

@@ronstubbs7937 All I can do is share my experience

[@michaelmorell7451]

I just fixed my friends BMW 328I. The code it was throwing was BS.

[@Paul.Douglas]

I need one of those heat shields. I burned up an alternator too. Mine has the Nismo header.

[@XenomorphLV426]

Alternator was never a common issue. Yes, they go bad, but overall nowhere near as bad of issues like precat or butterfly screws

[@kraokingxyz1397]

I agree, I thought that he was going to talk about either the cam/crank sensors or MAF which are notoroius for having issues

[@sandovalwill88]

@@kraokingxyz1397 that's is due to bad timing. Which is caused by bad timing chains and sprockets.

[@ramonnavarro9752]

I agree with you there this car has only three inherent factory issues: butterfly screws, pre-cat, and balancer shaft. Plus, a lot of these guys are either the third or fourth owners, did they expect to win the special prize from the cracker jack box???

[@highlife2k10]

Valve cover is shit design to the fact u can't replace tube seal and u have to buy whole new valve cover is dumb

[@Zainathan]

had no clue on the alternator issue but i need one of those heat shields asap since i have a manzo header on mine. also i do notice that rattle at 2k rpm so i think its time for some loctite. thank you for this video i guess my qr needs even more items than previously determined

[@Dilabun]

how do you get into the intake manifold to tighten it?

[@gtbarnes11]

That non Nissan valve cover is known to let oil thru the pcv valve.

[@salmanomar5583]

How, do you main pcv valve doesn't work?

[@danniescott145]

Am so glad I've got a 2.0

[@curtiswaite4366]

Qr20 qr25 sames same fuggin 3 motors and the 300000 on my 02 specv

[@mitchelllong5848]

I think my 2012 Altima has this engine, would that shield fit mine?

[@ryanpilgrim3052]

Please show more , I’m having the problem with the exhaust and the pre-cat failed and now the alternator cuz I never put it back the sheild

[@conwayramsey4865]

my rattles when I first start it up then fades away bit around 2000 2500 rpm it rattles but when I go to change gears it goes away but around 55 or 60 it rattles as well but give it gas and it stops any suggestions would be appreciated is the screws need loctite or is it the timing chain

[@teshikofurusato4541]

It's the timing chain. It's a common problem with no recall.

[@willbroccolo8389]

Have you ever had no start/ no crank?

[@mcguirepeter]

I am trying to fit a later model qr25DE thats after 2007 engine.... into the early T30 X-trail, I want to know if the bell housing stud patterns are the same?

[@robs9324]

Was the cat issue fixed on the 2003 sentras

[@bikesformortals]

We have a first gen qr and lately I've been lossing power, it's consuming a lot of oil but there no white nor blue smoke at the exhaust...don't know what could be the problem Also I've been having a bad gas mileage

[@SeanA88]

My 2006 burns oil but no loss of power. I replaced the valve cover and gasket myself. It still goes through oil but it's now 1 quarter every 2 months instead of 1 quart a month. I could smell the oil burning off of the engine whenever I'd drive it hard

[@miguelrivas2605]

Sean Anderson Curious why you changed out the valve cover- was there a leak, or just something quick and easy to try?

[@chrisyo295]

I bought a heat shiel for the alternator

[@stupid5231]

This is mostly for the 2002 model correct?

[@J.Nev.]

2002-2006

[@propxpropx1193]

Where did you get the intake kit?

[@offlinegabe]

Great video

[@hellothermo6245]

Can you do the heat comparison with and with out the shield ? And also the valves? Please

[@benjamin-rw8qm]

did you get a check engine light because you removed the precatalytic material?

[@Maikey318]

Im having some p0128 problem. Replaced thermostats but still running the same code. What can it be?

[@Buddgett]

Спасибо за видео, полезно

[@chrisyo295]

Tengo el problema p0455 como lo arreglo es el problema que tengo en mi nissan alguna ayuda. Gracias buen video

[@toniwicklund7816]

My 2015 nissan altima all sudden is notdies accelerating when put in drive or reverse then the battery dies. It doesn't happen while driving only when I've been driving for a couple hours or even a hour. If change it out of drive then back in drive or reverse,the problem begins. Please help I love my car.

[@Ricky-manic]

Before I installed my headers I (wrapped them) now I hardly got heat coming for them 🤔

[@sunnydee7745]

Ended up selling my 02 spec v... getting another soon tho. First one had way to many issues

[@crw5536]

Sunny Dee I’m looking into a 2002 with 180k miles what should I look for

[@jonj4357]

CRW 55 everything. 02 was the first year of the motor. Look for a 04 or newer

[@SeanA88]

Sometimes you get a lemon. I bought my 04 3.5 v6 off Craigslist(not the best idea, I know) it hauled ass and looked really good, it was black but it was a lemon. I got into an accident, got more money from insurance than I paid but bought an 06 2.5. I've had the 06 for 7 years and it's been a really good car

[@sunnydee7745]

@@crw5536 anything below an 07, youd really consider looking for a different car. Unless you find one with no more than 50k miles than sure, by all means daily it. But 180k? Nooo, get something else. At the end of the day, from experience. Your better off getting the newer gen, preferably 08 to 12. If not, just get another vehicle. I learned first hand the vq25 motor from 06 down weren't the best, nor the most reliable

[@sunnydee7745]

@@SeanA88 I was too lazy or did i have the knowledge, i could have changed my spark plugs , gotten a new battery an alternator, motor and transmissions mounts and a new oil pan. But nissan cost ALOT to repair. Its stupid. I bought a 98 Chevy tahoe with almost 300k miles and my gosh it runs beautifully. Replaced just about everything on the dam thing but the motor and transmission, and I love it... more miles more smiles hahahah

[@EDB0223]

The pre catalyst going into my engine cost my over $4000! The inherent radiator/transmission problem cost me another $3000. Sadly Nissan is at fault but refuses to admit their errors.

[@twodimensions9001]

Not sure if anyone knows but is it Possible to stick and fit a second gen qr25de into a b15 frame? I wanted to make my Sentra into a project car but I wanna avoid a first gen engine.

[@baymaac1975]

Unfortunately no the blocks are different but the internals are the same and so if you ever had a 1st gen qr25de dismantled you can instead of rebuilding with gen 1 parts go ahead and use Gen 2 parts. The only problem is you will have to drill a hole in the headgasket from the Gen 2 to allow oil to flow but they have instructions and a write up on b15u.com

[@keaflord]

You can slap a gen2 qr25de in a b15 frame. You need a custom midpipe, header, and crossmember along with some other stuff that just costs money. My buddy Calvin harden has done the swap no problem. Nisformance tuned his car. And my friend Caleb is in the middle of the gen 2 swap.

[@pistolspanties859]

I have talked to the owner of sc and I’m gonna make a template for him to go on the qg18 Sentra

[@randypowell8197]

I ceramic coat all my headers. It's worth the money

[@rierboiwithans]

A special thank you to SC Concepts for supplying the heat shield! Here's to every QR25 still on the road today. Instagram: instagram.com/sc_concepts/ Store: scconcepts.bigcartel.com/

[@PeelePowered]

Damn, I wish you had the QR from the b16 Spec V. I can’t find anyone with good info or videos on it. From what I read, it’s a totally different QR25 than the older ones

[@Jimmy_335]

Nick Peele They pretty much fixed every major issue the Gen 1 QR25 had. The B16 QR doesn’t have any where near as many issues as the B15.

[@nitramvoksmad2404]

My QR is in a 2017 Frontier 2wd KC SV and I haven't driven it much (3300 miles) and have only recently taken interest in 4 cylinder powerplants and read a post that stated there are differences between the QR25DE in the cars and the truck... IS this true and are you able to differentiate them for me. I am beginning the puzzle of learning the pieces and parts that I want to upgrade. auto-trans.

[@deanthakid9803]

What about heat wrapp for the headers?

[@trssho91]

Dean Tha kid I’ve been told by many people that I trust not to do that...you can heat soak them and they can crack

[@jonathin5852]

@@trssho91 I contacted OBX in regards to wrapping headers with fiberglass/ basalt wrap, and they said you can wrap the headers without issue. I went ahead and wrapped the headers, but i'll have to wait and see for long term issues to arise.

[@crystallizer3437]

Hi! What is the the budget scan tool for Qr25? Thanks

[@Asian_Noodle]

How could I buy one of those alternator heat shields today? Their website seems like it’s shut down. if someone could help me out I’d greatly appreciate it. I just starting an 02 ser build

[@TheCheckit96]

Were you able to find it? I need one too.

[@Asian_Noodle]

@@TheCheckit96 never was able to find one sadly

[@googaagoogaa12345678]

Mine is a 2011 will it have these issues it had a look over before i bought it and the seller and my mechanic friend said it appeared okay

[@Shumayal]

how do I know which generation I have? got a T30 2010

[@harrybrooks8514]

I have a 2013 Frontier with the QR25DE. I bought it at 11M and now it has about 40M. I’ve noticed no significant oil consumption (I use synthetic). What generation is my engine? Had those early bugs been worked out by 2013?

[@andrewbartleman9169]

Yes they fixed them, was only on the first generation as he explained

[@timothythomas2685]

I own an 02 Nissan Altima 2.5 S and my main concern right now is with the issues of the butterfly intake manifold.. Do I have to worry about that still?..

[@J.Nev.]

Yes. I Would Get That Precat Replaced Too. Or Gutted.

[@radwizard]

I have a 2005 Spev-V. I've never done anything to it other than oil change and brakes. 147K miles. Is this something that needs to be done on the 2005 model?

[@trssho91]

Check with Nissan on the butterfly screws, there is a recall for them so you can get the dealer to fix that. If you dont have a recall you may not have the buttery screw issue. Mid way through 2005 Nissan changed the screw design and started loctiting them from the factory. Only late 2005s and all 2006s are ok, so most se-r & spec v have the issue. I have a late 2006 (August 2006 so mine is literally one of the last B15s made and they did fix a lot off issues by the time my car was built). As far as the precat goes, no one gets by ok there. I removed mine completely and installed headers and then installed a o2 spacer so I don’t have the check engine light. What happens is these cars / engines don’t have a EGR valve. They instead have the exhaust valves linger open as the piston goes back down drawing exhaust gas back into the cylinder. It’s a passive EGR system. As someone who also owns a KA24DE based Altima who’s on their third intake manifold gasket due to the egr port burning out the intake manifold gasket, it’s not the worst idea I’ve seen, lol. Anyway, as the catalytic converter breaks down it comes apart into a sand like material. Combine that with the passive egr system I just described and you are basically sand blasting your valves and cylinder walls/rings. It’s not usually an instant catastrophic failure, but gradual increasing oil consumption and compression loss until it all becomes too much for the engine. It took me some time to finally get a clear answer on what is specifically happening, I was told all this by a friend who is a service manager at a Nissan dealership, so I figured I’d share.... TL;DR , get that precat our of there ASAP because it is a time bomb that will destroy your engine 100%

[@radwizard]

@@trssho91 thank you.

[@jonnnn4895]

Why not just wrap the exhaust manifold and call it a day

[@TheHrukman]

thats why dont by nissan.. aka renault

[@k-techcowboy1667]

Whered u go its bein 6 months

[@garyjacques6139]

Why would you put clothes away after the washing machine?? Lol

[@paulpinto562]

Why didn’t you go cold air. The short set up doesn’t do anything for you.

[@kevinfrancisco1730]

I have an idle problem, it's running at 1100 rpm. Is that a common issue?

[@BayAreaRushHour]

Same. I had this issue after a head gasket swap and would like to know solutions

[@eddiehawk5.0]

thanks for the info, i’m looking at an 02 spec v

[@carloscorrea1011]

More video

[@samuelsmithvasquezmoreno3075]

Yo soy taran de maceta

[@mozartcat89]

Ok. So how do I remove the catalyst material from inside the header?

[@ricardonava2550]

Ponle subtitulos en español

[@loudboyz407]

Very helpful video, love these cars I have one on my KZbin! Check it out