Major Issues Found In 1200+HP 2JZ Build | Detailed Engine Teardown

In todays video Jay takes apart this 1970 Datsun that is powered by a 2JZ engine that went over 244mph at Bonneville and at El Mirage. What damage did Jay find inside? Check out this detailed teardown to see what went wrong with this engine.
as we find out what parts were used
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[@aaronphx420]

Jay is such a class act, you can tell he wanted to put the last guy that built that engine on blast. He remained calm and was speaking the truth about how it was poorly built. Keep passing your experience and knowledge around for us to use :-)

[@gt1man931]

All that stuff aside, what cooked it was running without cooling flow. The actual build was insignificant to the issue of why it was tore down.

[@denelvo]

Especially considering the rod caps he designed were installed backwards.

[@SosopChabot]

@@gt1man931 that wouldn’t have anything to do with the main cap’s though.

[@ronaldparker9719]

J

[@ronaldparker9719]

U M

[@ericohman]

Random question: Is it stainless steel on the benchtop? Want to order sheet metal to put on my wooden table

[@zeroyon9]

It's really nice to watch a video that is not overly dramatised and full of emotion. Jay is just educating and sharing, such great content !

[@nismofreak33]

super interesting! fitting caps on backwards is an extremely rookie error, not sure how they managed to do that and im surprised it didn't spin a bearing much earlier! Amazing what you can get away with

[@jagharingenyoutube]

It had to be line honed with the main caps the wrong way

[@Airman..]

Never owned a 2JZ in my life always been an SBC/LS guy, I am here to watch and listen to a professional doing an amazing job

[@frfrpr]

Music polarizes your audience. If you want viewers kill the music. No one will complain.

[@willhakosuka5794]

KZbin needs a way upload these videos so there can be a button to remove music .

[@TheRealBanana]

​@@willhakosuka5794 KZbin does allow you to upload different audio tracks. I've seen a Real Engineering video where the alternative audio track was dialog without background music. It takes extra effort to do but its definitely an option now.

[@daleolson3506]

The music any music junks all videos.

[@justinfranz1375]

“On todays episode of Jays Tech Tips: How to not machine a 2j”

[@mrd.808]

Curious what's Jay's preferred pulley damper: ATI or Fluidampr or OEM

[@tonymiller6255]

I'd bet the one that's serviceable and tunable to your engine, ( ati )

[@iainball2023]

From someone that has been building engines for 30 years, I would like you to know I hold you, (and Steve Morris) in the highest regard. You put so much wisdom out there its a joy to behold. I learn something with every episode. Thank you. ❤

[@BrianCrofoot]

Jay giving us that steady 2JZ tear down ASMR. Love the videos! Learn so much every time! Keep them coming!

[@schematic671]

Ive opened up and inspected many an engine after failure. Ive never really been able to make 100% sense of my findings, but watching Jay explain things in these breakdown videos gives me alot of "ah ha" moments when i think back.

[@sailingjazzy8272]

What a hack job - Jay passing along decades of knowledge - props. 💯

[@Car_Cast]

How exactly do you find out if the machine shop has a high success rate? What just ask them? All machine shops will be like yea man I know what I’m doing.

[@thewrathofbibby3381]

The boys over at Skid factory use your bottom end caps. Highly recommended.

[@timbo19751975]

Given the thermal run away and loading the engine had when the belt came off several times, the fact it was still even running with no HG failure, no piston/wall scuffing, nor broken rings - none of the usual things that happen from an overheat i'd say it did pretty good. Assembly and machining failures aside, and are not excusable.

[@tomorrowsmidnight]

Crazy how this engine, despite the machining/assembly issues, was able to live long enough to perform the way it did.

[@BillyWillicker]

Clean is king. Period. It can not be too clean.

[@rcravincase]

Cummins requires use of loctite (not sure which one) on the main caps on the x12 cng because they have a fretting issue. Not sure if that would help with something like this

[@aaronhall7740]

Loctite 518, it's an anaerobic flange sealant.

[@Hydrazine1000]

I don't expect to ever own a 2JZ powered car, much less that I expect to ever out-source building said engine, or doing so with my own hands, yet I just lap this all up! (It's not that I _wouldn't want to,_ I realistically don't see it ever happen, not unless I win a big lottery!) Thank you for sharing your knowledge, experience and insights!

[@chrisgarcia5462]

If that Z had the Vg30 engine that powered the Jun 300zx back in the early 90's it would have launched into space considering how light it is compared to the 300zx.

[@epictales1307]

I have a LS3 that has some scratches around the crank journals. I can catch the lip a bit with my fingernail. What would you recommend I do? Should I buy new, take it to a machine shop and get larger bearings to fill up the clearance, or just buy a used crank from someone online?

[@az-qg7hz]

Really enjoy this sort of stuff. This Man is a legend

[@tadda6282]

My block has Real St. billet mains in it and thankfully my builder installed them correctly lol. But Brain Roche does know a thing or two about building an engine.

[@GarageSupra]

When I rebuild my 2J GTE, I used ARP 2000 Head studs back in 2016 with what they came with? Do I need to worry?

[@deantheboatguy1437]

now that its been completely cooked (stress relieved & normalized) wouldn't it be best to cut everything to spec (line bore , deck & cylinders) in order to have a more stable and accurate block that moves around less as it heats and cools under extreme use ?

[@ReubenHorner]

I totally think so but hopefully real st pipes up

[@trilliamogdlocog4986]

If we could only make forged iron blocks the 2jz would be unstoppable..

[@openmind3699]

Sounds like the last person to assemble this engine is a real amateur in Comparison to Jay , And by rights should be shown up if ya gonna build a high hp motor you don’t tighten the con rod bolts with a rattle gun 🤣🤣😱

[@yaboykris2118]

Will you be my mentor? Lmao love your videos. Doesn’t seem like the people building this engine knew what they were doing.

[@andrew_gencoupe]

The level of detail and knowledge you have is what I want to become. I'm still learning how to be a mechanic, but the perfection of fully detailing and building an engine fascinate me to build engines this good

[@billwelter4101]

Is there a way to improve aerodynamics by relocating the turbo to the front of the car? Probably gain

[@markcozzie]

Surprised it even ran at all,or didn't lock up on first run, only if knew who built it??

[@brracing7861]

It took an amazing amount of abuse for not being machined and assembled correctly.

[@Carbonneutraldrop]

Tell me the guy who built this engine usually deals with junkyard ls engines without telling me he is a ls guy… Signed ls guy

[@armandoguzman7746]

Very smart and knowledgeable guy jay is thanks for the information

[@Eduardo_Espinoza]

A lot of machine shops don't know or think they know everything.

[@TheNDFarmer]

Love these videos, also made me rethink my plans on who I was gonna send my motor to for billet mains

[@BMXAndy1994]

Hope previous owner never uses that machine shop again and/or previous engine builder.

[@cagr4249]

Wow - strange that the totally loose bearing shell didn't spin...lucky guy... This is a very interesting video and I really love the way of presentation.

[@yarrdayarrdayarrda]

The bearing had thermal damage, but the physical size of the steel backings didn't change, so the bearing was still clamped properly in the housing bore. It wasn't until that cap was removed that the bearings were able to relax into the shrunk state a bimetal bearing wants to be in after an overheat/overload.

[@Daniel-RunToRoyal]

As always, great breakdown!! Can't wait to see the rebuild!!

[@ManMan-yf4gw]

Hi, maybe it's an odd question, but is there any chance to build a 1000hp+ engine with a 22-28 psi of boost, for the everyday use, that will run for 60.000+ miles without any major fails? What engine would you recommend for this mission?

[@Cancun771]

Wouldn't it really make more sense to use a turbine engine at this point? Like from a helicopter or turboprop plane?

[@alexjenner1108]

Sure, but landspeed racing is all about class records and turbine engines are another class. Someone ran an unofficial 500 mph wheel driven record with a turbine, but probably not a cheap way to go racing.

[@111a-p2d]

Thank you for such a video. You need to learn from the mistakes of others. Such videos show important issues in assembly and engine building in general. Thank you! I have 7mgte in the supra mk3. And I myself service my car and even the motor assembly.

[@woodzy575]

Auto machine shops are getting pretty scarce where I live. Most people just buy a new car and drive it. I found one that seems to do a good job who does a lot of agricultural and v8 work . motor is still together after 2 years. That's about the only metric I can use

[@bobg3034]

You should try to line hone a aluminum block with steel caps! What a pain!

[@yarrdayarrdayarrda]

Yeah it can be pretty brutal. In a perfect world you're miles ahead if you can line bore to within a thousand or two before the honing process. Line honing is a finicky task with a bunch of block rotations and cap hardware loosening to get all 5 (or 7 in this case) housings within spec at the same time.

[@Daniel-S1]

Thanks from England.

[@GTRliffe]

main cap skirt should be on the large side-you then spread the block (bolt thread tool) and slide in the caps that way. when done like this , you bet welded-like resistance fit

[@pablomini5689]

such a great video

[@chewdoobautomotivedetailtm2883]

🚨🏁🚨🏁🚨🧨🚨🚨🧨❤️🪀❤️🪀❤️🪀

[@TPSYKRT]

Love the knowledge! Keeping care of your investment is best, at the end of the day it can be your negligence that gets you

[@wololo10]

Only 1200?

[@akarilotube]

I would love to have Jay personally do an engine build for my car.

[@john_p]

Jay rocks.

[@M_F754]

I wish I knew anybody with as much knowledge as Jay to send my engine to

[@michellee8369]

Pin button as well plays a part in supporting the piston ring grooves and lands to a point

[@five27racing]

who makes the intake manifold??

[@realstreetperformance]

That is a custom manifold someone made for this car. It uses a OEM lower section and the rest we are no sure.

[@turbyturbo1]

1st !

[@realstreetperformance]

You're the man!

[@chensueher1393]

I love these videos Jay, keep them coming

[@azza9575]

Probably a good idea for some DLC coating

[@mrd.808]

Where's your donate button, I learned a lot today

[@bwatt1383]

Wonder how this engine compares to the one in the 2jz streamliner, so far i see a bigger turbo and i assume 500 more hp

[@markconte1513]

The engine in the Streamliner was one of our RS1600s. Here's a video about Jay's teardown on that engine: kzbin.info/www/bejne/eabQnGWth7tsgbs&ab_channel=REALSTREETPERFORMANCE

[@lightspeed9098]

I could listen to Jay all day - he's a natural educator !

[@Feedme_pizza]

Why was the engine overheated from drive belt failure, if your running external water pump

[@jagharingenyoutube]

If you watch the video he says that it had a problem but they changed it to 16v battery and aftermarket pump, but the damage was already done

[@jagharingenyoutube]

If i remember correctly they show it in an old video

[@boosted2.4_sky]

LET'S GO 🏁

[@realstreetperformance]

Yes!!!

[@mrd.808]

I'm curious if Jay has any plans to run any EV at Great Salt flats

[@javajack9197]

Pink Floyd =)

[@EsotericHashira]

Wtf the spark is in the intake manifoid?? Why??

[@jagharingenyoutube]

Coil near plug, not coil on plug. Coils are on intake and has spark plug wires going to the spark plugs

[@EsotericHashira]

@@jagharingenyoutube ohhh, i was like what??? thank you for clearing that up.

[@Baard2000]

@19:35 : " its not the 2000 hp range everyone is living in in the internet...." 🤣🤣🤣🤣🦾🦾👍👍👍👍

[@japmuscle]

Somewhere there is a guy who built this engine, and he's watching this video, and he's dying of shame.

[@Ryan-wk7us]

Never herd the term bucket before and so many times doubt there actually called buckets

[@yarrdayarrdayarrda]

They are.

[@markconte1513]

They're also known as Cam Followers.

[@poopl00p3r]

that shit was put on backwards . no wonder there is wear on those bearings

[@yarrdayarrdayarrda]

Caps were installed backwards before the block was line honed. If the block was machined with the caps in the correct direction, then assembled with the caps in the opposite direction, the crank wouldn't have turned because the bores would have all been offset.

[@sexyfacenation]

awesome video brother!