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Timing belt off center

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gofast63

10+ Year Contributor
382
28
Apr 22, 2011
Manchester, Michigan
Hello, my timing belt is off center it's over more towards the driverside( away from the valve cover). It's also hanging almost an 1/8 of a inch off the idler pulley but its flush with the cam gears. I know it's not because it's too tight because I adjusted it many times. I do not have my tensioner pully set to 9&12. But I don't think it would correct the issue. I think the tensioner pully my be the Culprit, but its solided nothing loose. Thoughs?... I've been building this car for 2years now and I'm itching to drive it.LOL No the pully's are not new.


I just remembered that I didn't tighten the tensioner arm.... Maybe that's causing it to push out. It hasn't been started so don't worry.LOL
 
Something doesnt sound right with the swap. You should have a 2g mount but 1g tensioner arm and all 1g components.
Have you checked the 1g in a 2g writeips? There are only a few possibilities here I would think.

It's because I have a 2g face plate. Unless theirs something else I don't know.....?
 
I did a quick search and did you have your front cover machined to fit? They were saying the 2g front cover won't fit on a 6 bolt, unless it's machined to fit. Just seeing if maybe it wasn't machined perfect or something.

Yeah I drilled out the bolt holes and for the oil ports as well. No heat was applied to the face plate.
 
You need to go read the 1g in a 2g swap pages. The 2g case on a 6 bolt is the hard way but it probably doesn't matter here. RRE did it. I would read the RRE version 1 and 2 and the magnus page. Just from casual glance you have some mismatched parts.
 
UPDATE!!! When I don't tighten the tensioner arm, bolt the belt stay flush on the cam gears.Which I can deal with. But when I tighten it it wants to hang off the cam and it stays at 1/8 off the cam gear. Weird right? Man, I'm so close to driving this car and it's been three long years. Any ideas guys?
 
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Come to find out I didn't use a counter sink bolt on my water pump. It was pushing it forward causing the belt to hang off the edge. Problem as been fixed!!!!! She rides in the center now. Thank you guys so much! Thanks Paul for mentioning RRE. The last time I looked there I was pissed off at the car. I must have over look that part of the page the last time.:)
 
I guess one of the bolts that hold the water pump was rubbing on the timing belt? It kind of shows a mark along the entire Timing Belt in one of the pics. If that is the case I don't know if I would trust that belt anymore.
 
The regular hex head bolt on the water pump was pushing behind the tensioner arm, forcing it to be uneven when the tensioner arm was tightened. That explains way when I left the bolt loose on the tensioner arm the belt would stay flush with the cam gears. But when tightened, it would go off 1/8". That wear mark is how much it was hanging off the idler pulley. Please see attachments.
 

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1st gen. water pump (modified) - part# xxxxx
1st gen. (6 bolt crank) engine block (modified) - part# xxxxx
2nd gen. (7 bolt crank) oil pan (modified) - part# MD332043
2nd gen. oil pump (modified) - part# MD327450
2nd gen. crank angle sensor - part# xxxxx
2nd gen. hydraulic tensioner - part# MD308587
2nd gen. motor mount (modified) - part# MD189172
2nd gen. arm, timing belt tensioner (modified) - part# MD170402
2nd gen. cover, timing belt (modified) - part# MD332865
2nd gen. cover, timing belt under (modified) - part# MD199941
 
I think rres solution is to clearance the parts. Never saw somebody change the bolt. If you do it again id use a 1g case.
 
I did it so I could keep my 2g crank sensor. Plus you cant buy a new 1g case from the auto parts store. It's very easy to modify the 2g case. Just so you guys know, that hole which needs to be plug for the 2g case to put on your 1g 6 bolt block, make sure you have a bushing pressed in not welded. You risk the chance of it wrapping. That hole is tapered, so you will have to drill it out first. If your experienced at welding then go ahead. I just prefer not risking the chance of having to pay another $220 for another one.
 
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