Complete Timing Chain Job On A Chrysler 4.7 Engine

[@jamiejonesthecarman]

Hekzbin.info/aero/PL8kPE7Ywpu4hMuIU6Mto_yTJGp_DrrHFWy Guys , This playlist should cover everything you need to know

[@JohnMiller-mq4sl]

2

[@iaguilera67]

@@JohnMiller-mq4sl there is an issue with the link.

[@doublerosestwinsland]

Wow🤩🤩! You make it look so easy🤗. Thanks for sharing 👍

[@robertmoore9559]

Working on my wife’s 4.7 Jeep. Got all the accessories pulled and was just about to pull the harmonic off when I noticed the notch marked tdc. Seeing as its has a key way to line up with, do I have to pay attention to this. I am in the process of getting to the timing, oil pump, and crank seal. Great video! Thanks for your time. Shout out to Popsy for all his hard work as well.

[@strattuner]

I'm a retired master of 47 years and your tutorial is flawless,damn good presentation,only one suggestion to anyone working with a multichain engines,you're gonna get messy on this,but it matters,the first 30 seconds to 1 minute run on startup on new engines or new timing components on these complex engines is critical,the stretch happens then ,till oil pressure slings on components,i always soak chains in rear end lube for 1 hour or more,then towl outside and let it drip off,then install,engines run quiet then you can hear cam followers and lifter designs,i also run duralube in engines after breakin and every third oil change,my ford has 487k on it with three timing chains,460 ford gets 16 mpg,it works

[@ManningControl1]

Hey guys. two weeks of rpm not going over 2k rpm on a new reman engine, I was very frustrated to say the least. I found your video. spent 3 hours taken off valve cover spinning the crank watching colored chain links. finally got to the black link and found it to be one link off. put it on mark, and this engine running so good you can hardly hear it. smooth. Long block from engine world. thank you so much for this information. great Video. Ken Manning

[@doublerosestwinsland]

Thanks for sharing 👍

[@mrchase1]

I did not believe you CarMan that you would make this job easy to understand. But you did and it's great. Perhaps I will consider doing this type of job in the future myself. I can't believe that someone would pay $3000 to get this done professionally.

[@jamiejonesthecarman]

gilberto chacin Glad to hear it man. Check out today's vlog because I addressed you in it again. LOL!!

[@jerrodpaberzs9326]

I love this video. I have a 2000 Dodge Dakota that was given to me, and most likely has the valve seat issue, making the computer think the fuel injector #2 is bad. The injector was replaced, and the voltage checked on the wiring. Also, swapped ECM's with another one and it worked fine on the other truck. I have never dug into an engine this far, and this video gives me 110% confidence in fixing the truck. THANK YOU!

[@keithb4007]

"it's not runned"....my new catch phrase. followed by "it aint good english". LMAO Great video. told me exactly what I needed to know for my 4.7 rebuild. Thank you!

[@Jacko5340]

Thanks for the great and candied video!! I have always walked away from these truck and your video gave me the ware with to go for it. Your rubber band thing was priceless. It took me 3.5 hours to complete and run perfect. I so appreciate that you were not trying to sell me the world. Keep it up brother!!

[@handgunner1911]

i have had a few of these motors i know they are a little complicated etc but honestly these are very good motors they produce good hp and they are very reliable, i just sold my durango with 220000 miles on it and reason im posting is i just did all this before i sold it i had some things i was unsure of so thankfully you guys had this video.anyone that is doing this job i found the most important thing was just being patient it looks intimidating but you just have to take your time,thanks guys for the video it helped me.

[@danielsmith2447]

Thanks for taking the time to explain this. It wasn't easy but I actually did it with no one helping me.

[@toddheil42]

Thanks for a great series. I had been through this process 2 years ago, but my lack of understanding on the operation of the fan clutch, led me to falsely thinking I had corrected an overheating problem by replacing the thermostat. Anyway, your videos helped a lot. I do wish I had watched the one about properly placing the cam sprocket on correctly earlier. yeah, i did it.. I didn't have it on all the way, and after 1-2 hours, it spun free and chipped down the locating pin, exactly how your video later points out. Luckily the shop that machined my heads, changed out the pin on my cam, and helped replace three bent valves. Great series, though. Now that I have it running, wanted to give your props!

[@emartinez0291]

I've been avoiding putting new heads on my 2002 Dodge Durango because of the timing chain part. Your video explained how simple it really is so now I'm motivated to tackle the job. Thanks for taking the time to share and great job

[@jamiejonesthecarman]

+Emartinez828 cool need any help im here

[@bradhoff5035]

BEST 3.7/4.7 video out there! Great work, gentlemen!

[@311asw]

TheCarMan videos provided some great help with my Dodge 3.7 project. We had a broken valve spring and bent valve and these videos were a huge help to us in completing our work successfully. Thank You!

[@jamiejonesthecarman]

+Alan W thanks a lot for that so forward and we're getting ready to put all of those videos and one single playlist on the front page

[@MrSeebobski]

I want to add a wedge out of a 5inch by 1×2 with one edge up 2 1/4ish along the 5" and cut taper down the 2" side 1/2" then a zip tie around both guides makes it able to remove the head and not lose mark or guides spring out of place. Also remove all rockers and cam moves freely! If you have the valve spring compressor tool for the 4.7 is easier and less chance of scratching up the cam. But thanks for your time to show all this work!

[@westanner7885]

Thanks for taking the time to educate someone like myself who has never done a timing job. It really is simple. Great Video!

[@jamiejonesthecarman]

+Wes Tanner awesome you need any help let me know

[@westanner7885]

+JamieJones TheCarMan Thank you, I actually just finished doing the job, I will be putting it back together tomorrow and firing her up! The right chain was completely off of the idler sprocket. I thought it bent some valves, so I took the head off. I got lucky though because there were no marks on the pistons or valves and everything seated properly. I'll keep you posted!

[@westanner7885]

+JamieJones TheCarMan Put her all pack together today. Started right up and purrs like a kitten. Thanks again!

[@robertmedina6875]

Thank you soo much for doing the video. Having a dad is awesome. I wouldn't know. So thank you and your dad very much!!

[@christopherpatterson8833]

❤ this is the best video on how to do timming on 3.6 period for beginners everything explain wish yall had video on everything on cars lol great job

[@iceberg623]

You got me wanting to go ahead and do mine because people keep giving me prices for the job and one guy even told me not to buy the whole kit. Great information guys

[@jamiejonesthecarman]

Eddie Evans Hey Eddie, glad you like the video man and you know what? Its really not that bad of a job. It takes a little bit of time but if you follow our steps it will come out perfectly. Make sure that you have a buddy to help you out but I wouldn't pay anybody a dime. They just want your money man.

[@iceberg623]

That's what I figured I just got an offer from someone for $200 but I'm sure it's without replacing the oil pan or tensioners

[@Robertwells596]

This was just the video I was looking for. I've done several timing chains on other motors and I was kind of dreading doing the timing chain in my Durango with the 4.7 and this just made it that much easier. Ordering parts this week and knocking it the second the parts arrive. It's been ticking for a long time now and I've kinda just been wanting the motor to blow up so I could hemi swap it and well it's still trucking along. So long story short it's timing chain and guides time along with oil pump and might as well do the water pump since I'm there anyway. Again thank you for the video and the amount of detail you put into it!

[@jamiejonesthecarman]

checkout my playlist we cover everything, , job really not to bad

[@sminton85]

Awesome video. I have a Durango with the 4.7 and just got my timing kit delivered and will be replacing this week. Thanks for taking the time to do this!

[@marshallbuckman2358]

Many thanks!! Very helpful for the "DIY" guy like me. Way better than the repair manual. Keep up the good work.

[@jamiejonesthecarman]

+marshall buckman you know you're exactly right that's why I made the video because the manual makes it look so complicated like you can't even do it, anyway glad I could help you if you need any more help let me know I have a whole series on this engine

[@derikhackney9582]

Now I feel comfortable with tackling my RAM. Keep up the good work 💪 this was very straight forward.

[@appleofgodseye03]

Thank u car man for all ur help my 2004 Dodge Ram 1500 4.7l fired up on the first try it's been one week with no problems thank u and ur buddy for all ur help

[@jamiejonesthecarman]

+Danny Andrea Loza Great Job !!!!!!!! look at you making your car run and stuff,,, you ever need any help in the future just let me know my man

[@MrZelvyn]

I replaced the timing chains on my 4.7 with just watching this video. Thanks for the video.

[@jamiejonesthecarman]

oh my God you actually tried this LOL great job

[@johnbaker4915]

I am very grateful for your help. It would have been nigh on impossible without your help.

[@browill9]

The best how to video on youtube! THANK YOU VERY MUCH!

[@iaguilera67]

I love how you guys are using the torque wrench to turn the engine, even I know NOT to do that.

[@texasblessed8270]

Nice job y'all. My valve seats dropped,chewed up my pistons n heads...full rebuild.

[@samueljoseph6243]

I have a Durango 4.7.i'm working on it and was stressing over the timing chain. your video helped a lot. I'll post a video of the work when i'm done. thanks man.

[@mrhighway]

Durango from 2006-up doesn't have this problem

[@jamiejonesthecarman]

awesome and you shouldn't have any problems but if you do let me know

[@jamiejonesthecarman]

it's the same procedure on a 4.7

[@roneymcstotts2088]

Great video I wouldn't be afraid to try it now . Liked the rubber bands.

[@jamiejonesthecarman]

You got it

[@nitroman365]

Something that makes this job easier. Dont focus on getting the cam chains 100% lined up on the idler pulley. Don't install the tensioner or tensioner arm. Install crank to idler pulley chain. Remove cam gears. Do the RIGHT side first, followed by the LEFT side. Install tensioner arms and tensioners. This is a one man job. Tighten all to spec. I've done this job myself in less than 10 minutes.

[@Michael-w8v]

Cool man. It look like my Dodge Dakota 3.7L V6. I now understand how to change timing more.

[@jamiejonesthecarman]

+Michael Marr yes the exact same procedure

[@lalp613]

Excellent how to video, i did mine alone in one day thanks to you.

[@sharky1600]

Thanks for the info it will help me big time, getting ready to change that on my Jeep . Keep up the good work .You guy's were great .

[@jamiejonesthecarman]

sharky1600 Thanks man and be sure to let us know how yours goes. Glad to hear that the video is helping you out some with your project.

[@MrCharleslick]

I can't get the black links directly in middle

[@frostfrost22]

thank you very much for this detailed video! im doing this very job now on a 2002 durango then on a 2002 dodge ram. really appreciate all the details!

[@RockMonger]

Hey buddy, I've been following your videos to rebuild my durango heads. but I bought it already torn down, so it's been a pain figuring out what bolts and stuff I'm missing. thank for the videos! on to do my timing

[@autoairbrakemufflerspecial592]

Great idea with rubber bands very smart move, nice video great detail. im in the middle of one of these right now myself. ps everyone do not to forget to time balance shaft to on center pulley when you put it together

[@priscillagabrillo6239]

OK,thanks at least you take the time out to say that,my name is Pete mobile mechanic out of sanantonio tx,I've had to learn off of KZbin videos.

[@jamiejonesthecarman]

+Priscilla Gabrillo yeah if you get a chance to go to my home page and look at the 17 videos posted you'll see everything is related with that job front to back and yes KZbin is a great place for people to share information I love it

[@whodoneit1224]

Thanks for the video I pulled the ps head off and was concerned with the lower tensioner I seen how it just sits on the tensioner in your video now that I got that figured out .. had to replace a head due to lifter seat failure. on a 05 dodge durango 4.7l. Thanks again for the video so much info about the timing set up.

[@mrjay4201]

Working on my 01 dodge Durango timing thanks for the video helped a lot. don't have the right tools but getting it done

[@williambeckwith6192]

Extremely helpful video. Thank you for taking the extra time.

[@jamiejonesthecarman]

+William Beckwith awesome let me know if you need any help

[@lesbutler7009]

Thanks so much! You guys made this a breeze for me and my son.

[@BuzntFrog]

Excellent video! Appreciate you guys taking the time for this.

[@gregbratrsovsky5787]

Getting ready to do this on a 4.7 dakota. Thank you for the video.

[@curtiscains8533]

Thank You Gentlemen... My Liberty 3.7 is in the sickbay but I think you just gave me the Medicine

[@sd9241]

Awesome job with this tutorial!

[@jamiejonesthecarman]

+Kenneth Stacy Thanks so much Kenneth!!

[@JoseGarcia-cb5dz]

thanks Jamie just tore into my 2003 1500 RAM this helps

[@jamiejonesthecarman]

+Jose Garcia awesome need help let me know

[@javieraguilar-dh4ro]

thank you for the video . really nice .this my firts time do this job, and i get done right because you .thank you again

[@jamiejonesthecarman]

Awesome keep up the good work

[@oscarventura8337]

Man, that was a great explanatory video.

[@rambo1095]

Thanks so much!! You made installing of my new timing chain a lot easier!

[@invaliduzername377]

I didn't use a cam gear tool i just used the chain to hold the gears still and break the bolts loose. As long as you put something in place (i used a very long screwdriver.) to hold the balancer still you wont move the engine much and can move it back afterwards. Then you finish taking the bolts out of the cams and remove the gears

[@nastynibert]

Jamie the time it took in the vidieo for yall to explain how to put the timing chain set on with 2 guys i had mine pit on! thanks for th is detailed video 5 stars!!

[@jamiejonesthecarman]

+nastynibert that's awesome

[@locbrian1]

Awesome video and great attitude, thank you so much and you guys have a bless day

[@jesuscastillo4275]

Awesome!!! than you for your time in doing this, greetings from Monterrey Mexico. -Keep it Up!

[@JimmyA78]

great video!! Thank you for this. I hope to god i don't have any bent valves. Will probably be tackling this project next week end on my 07 ram

[@mrhighway]

2007 4.7 engine doesn't have this problem

[@jamiejonesthecarman]

all 4.7 use the same procedure if you have any questions please feel free to ask me I'll be glad to help you out good luck and you should be have no problems I did a whole series on the valves the guys everything so if you need any questions on doing any of this just look at my videos I got it alright brother good luck

[@jamiejonesthecarman]

just let me know if you have any questions whatsoever

[@4x4_quad_rider]

Thanks guys very helpful im getting ready to do a timing job on my cherokee this week

[@ricardonoriega6101]

Thank Guys very much. I just got me a Ram 2012 4.7 and your Video is perfect. Very good job Thanks Very much. 02/13/2017

[@jamiejonesthecarman]

+Ricardo Noriega did you find the playlist on my page

[@daddy14172722]

Thanks for the video it really helped me a lot. I had a question about the timing chain, after I removed the timing chain I assured that it was on TDC but wasn't sure if it was on compression or exhaust. You explained in one of your videos that it doesn't matter if it was in compression or exhaust just as long as it was on TDC on #1 cylinder. So after I installed the timing chain on the 4.7 engine and matched the colored link chain to the dots on the sprockets and made sure everything was aligned but yet the car didn't start. What could've gone wrong? Keep up the good work and thanks again.

[@jeeps4all714]

very very good, thanks guys.

[@jamiejonesthecarman]

+jeeps4all714 need any help let me know

[@rossini203]

this video were great thank you guys

[@jamiejonesthecarman]

+belizaire pierre rossini that's awesome that this video help you out if you need any help with that for 7 let me know be glad to be there for you thanks again

[@Nobody-ld7mk]

I had posted on this page before, I've finally assembled my 4.7 to the point of adding the timing chains. These aftermarket tension-ers are JUNK even the Cloyes has Design Deficiencies on the spring loaded tension-er The pivot bore sleeve is much larger than the bolt, the bushing is missing, there is no way to bury the bolt to a stop with a bushing in the pivot bore to let the arm pivot freely. Beware of aftermarket tension-ers like the Cloyes 90393SX there not right at the pivot point and on the back side the tang that locks the nylon pad onto the aluminum body is short of reaching the square hole it is to latch into. Excellent Video... everything necessary to time the 4.7 sure helped me in my first experience with the 4.7 mickey mouse backwards engineered engine that is a poor attempt at stealing the V12 Ferrari design. Thanks Dodge for the #^@(!#G !!!

[@jason3775]

Ordering parts today. Thanks for the video.

[@jamiejonesthecarman]

+Jason Baird awesome

[@jason3775]

All done! Thanks again.

[@michaelrobinson3127]

Much easier then I thought. Thanks.

[@nathangodwin9476]

first of all you described this perfect but one issue i ran into on some of these timing chains there are only 2 dot one on each side of the chain and not two black links. on the inside of the idler pulley sprocket there is one dot on one side count ten teeth from the top tdc dot on the idler gear both ways and the dots on the chain will match up

[@jamiejonesthecarman]

Nathan, thanks for sharing that man. Much appreciated. facebook.com/JamieJonesTheCarMan1/

[@nathangodwin9476]

i would like to ask if yolu can confirm the tension on the chains my problem is now is that driver side lower part of the chain is a little loose the passenger side is tight thats with it at tdc when i turn the motor over the passenger side chain gets loose on the top i just put new heads on is this common with out the pressure build up in the tensioners also when i took the passenger tensioner off there was not a gasket i never had a prob. with chain slap or noises the guides all look really nice i did replace the two the the tensioners press agianst tho.

[@jamiejonesthecarman]

Hi Nathan, the tensioners are not supposed to have gaskets so no problem there. Have you released the tension in all three of the tensioners now? If so, there should be enough tension to make all three chains snug with no slack.You should turn the crank 3 times, by hand with the V8 sitting at the 12 o'clock position on both cams and you should not have any slack. If you do have slack, you more than likely have a faulty tensioner on the chain that is giving you slack.

[@timothychristman2043]

great video and thanks for taking the time with the camera adjustments i was wondering if you guys did the rear main seal or know of any videos i can view thanks again

[@omartorres7340]

wonderful video thank you very much from mexico. great job

[@garyscrashcure]

Great job guys. keep em coming. Thanks!

[@opelgtrider]

Jamie I have a 2007 4.7 dodge Durango the secondary gears have different teeth an chain design then the aftermarket kit I bought , an the pivot bolt in the tensioner arm is different the oem arm has a bushing in it an my aftermarket arm doesn't . I need a bolt with a shoulder on it to work have you ever seen this. I checked advance, autozone , online they all sell the the same kit

[@jamiejonesthecarman]

Can you reuse your tension bolt ? Do the gears have the same size and teeth

[@masterjed27]

fyi no plate goes behind right tensioner and block only left side, some kits come with 2 plates if you install plate behind right side it will knock and have slack

[@jamiejonesthecarman]

good eye, thanks for the share

[@jkey4990]

Thank you for that. it was what I needed to know. I had 1on each side on a fresh rebuild and it sounded bad. Took out the right side and it now purrs. Also when I looked at the chains the left side was the one with the slack.

[@HeatedFireFly]

Hey Great video. I am sure it will come in handy. Thank You.

[@allensnook7760]

Extremly helpfull n fun,ur right could save a big bill.very sweet guys!!!could zip ties work just as good as rubber bands.just cut them with diagnle cutterz when ready.owner of 2002 wj need to do heater core vid next thats my next job,leaky core!!snookie pa.

[@jamiejonesthecarman]

Heater core will test your Nerves lol good luck tks for watching

[@allensnook7760]

Yeah tell me about it,if the blend doors arent upgraded to aluminium fix ones theyll also eventaully break.so this is second time dash is coming out.dealer did first one upon my request,only to fix one door 3months later other door broke.after putting in upgraded ones i was good for awhile.now two yrs later of course the core leaks.so now i tackle it cause no longer under warranty.saw on utube not easy task is right,but ill try!!!snookie

[@jamiejonesthecarman]

A upgrade would be awesome

[@allensnook7760]

Jgc parts .com is the place to get upgraded aluminium blend doors!!snookie pa.

[@jamiejonesthecarman]

Tks for the share

[@joey-cn6mt]

Zip tiyes work like a champ. Insad of straighty rubberdands

[@Jursaw]

Really informative! I'm going to have to buy that cam sprocket holder

[@jamiejonesthecarman]

+Jursaw yes it's a lifesaver matter fact I just used it on a Kia tonight

[@AircraftMechanic-AP]

Thanks guys. Very well done.

[@madmacc040]

Outstanding JamieJones. I'll be referencing this video when i decide to overhaul my valve train. Is there anything you figured out after the fact. ie components you didnt have to remove for access to the front cover.

[@jamiejonesthecarman]

+madmacc040 no the only thing that I would say is take your time follow our video step by step and it will come out perfect and we also have other videos on every aspect of it from building that had to you know when we remove the oil pan and oil pump and all that good stuff so anything you need we done it pretty much

[@danielsmith2447]

I almost fell on the floor when he said 'there's no way to screw this up as long as you do it correctly'

[@jamiejonesthecarman]

I know one of my first bosses told me the only way to put something together is exactly how you took it apart I was like well that all the help

[@vanessabooth9413]

This video is wonderfully helpful! Thank you so much!

[@jamiejonesthecarman]

Vanessa, no problem and thank you for the feedback.

[@ivansantos7283]

loved it!!! great video well explained !! thank you very much !!

[@eddieortiz3rdeo]

awesome job guys....really informative

[@tonyapalomino1281]

watched video did exactly what you guys did truck started, had timing chain cover off valve covers off put everything back on did not start any ideas

[@jamiejonesthecarman]

okay so you heard it run after you get the job then you completed it now won't start do I understand you correctly

[@corycampbell189]

first of all, great video. everything was easy to understand. Secondly, i believe ill have to undertake this task after recieving an extremely loud ticking. I removed my valve covers today and the only problem i see in the top end is alot of play in drivers side cam chain. ive got a couple of questions is you have the time to answer them. first, is this the 4.7 corsair(semi hemi)? second, would a failed tensioner/guide cause loss in power?

[@gillesracicot6562]

It is the tool that he uses to render the camshaft gears still so as to apply the 90 ft lbs of torque to the camshaft bolt.

[@SHNIAKY]

Thanks a lot. Very Helpful video

[@appleofgodseye03]

What's you car man well I did I put the timing chain on i rotated the engine without the spark plugs and it went around smoothly that's good right Hope to here for you car man thank goo Bless

[@jamiejonesthecarman]

Ok 2 cams v8 @ 12 and crank mark at 6 u are good 2 go goodluck ,looking forward to how good it sounds

[@burtlade1705]

Yup, I can do it now. Thanks

[@alaorjr9515]

Excellent, thanks!

[@mil7onautodiagnostics633]

5 years after I have a question, if you want to removed a head for a head gasket, would anything happen if you only remove on side head gasket, / chain tensioner, chain, and put it back toguether?

[@jamiejonesthecarman]

No I wouldn’t heard anything I would just check to make sure you don’t have any seriously Warren parts you know I wouldn’t wanna put bad parts back on but yeah you could take it literally completely apart and just change the gasket and put it right back together and if that’s all that was wrong we will still run just like it did

[@jamiejonesthecarman]

Actually I’ve taken the heads off of stuff that like back in the old days of trying to raise the side and the other Al not particularly proud of it but it will work you can pull the head off of something and just cut out a piece of cardboard flat and it’ll probably get you through 2030 minutes of the race another words a good head gaskets better than a bad one LOL

[@ciberaccesso1334]

good video does this work on a jeep 3.7 liter as well

[@jamiejonesthecarman]

+Ciber Accesso Yes it does, its identical!!

[@brandonselcer304]

One question I have is how did you guys get the crankshaft timing gear pulled off?

[@harrismalley1154]

Thank you for the video I have a 1999 jeep grand

[@jacklopez05]

How do you remove black plastic cap behind power steering pump on 2010 dodge ram 1500 slt 4.7 left side cylinder

[@jerradp74]

at 34:57 you had to reset bc the cam sprocket would not go on the cam with the tension of the chain, I am having the same problem. what did you do to get the sprocket on the cam???

[@jamiejonesthecarman]

vice grips to hold the cam

[@brianarivera9703]

awesome video.. thanks guys

[@maxag7500]

Thanks for the video. My only question is at 39:40, how do you know while turning the camshaft that much you’re not hitting the valves against the pistons?

[@mostlycensored7668]

Take out the rockers and re-install them after. With all valves closed there is no risk.

[@gillesracicot6562]

Jamie I already have the one that you told me that was on Amazon (it does not work ) I would love to talk to the father and son team because I want to purchase the identical tool that he uses at the end of this video

[@jamiejonesthecarman]

amzn.to/2BPZufT here is the exact one i have ,

[@jstewworld330]

I originally did the job to replace the oil pump and just wondering does it matter what stroke your in to line everything up

[@jamiejonesthecarman]

As long as the crank is on TDC, it does not matter. The stroke is set by the cams so if they are on 12, that is the compression stroke. If you move them to 6, its on the exhaust stroke. Was it running good before you pulled the chain? Why did you pull the oil pump? Was the oil light on or was it making noise?

[@marybishop100]

I listened to your video and did everything u said and engine still don't start what else should I check now the engine is a 2006 and truck is 2002 I did have to switch the gear on the back of crankshaft from 32 tooth gear to a 16 tooth gear because of the firing