2007 Tahoe Timing Chain Replacement

[Geotrash]

I spoke with the Cloyes tech dept and the gentlemen told me I have the right kit but he thinks the tolerances may be off between the cam gear and chain. He thinks one may be max tolerance and the other min tolerance. He stated, it shouldn't be that tight and suggested I return it to RockAuto and get another. I am not thrilled with the idea but I guess there is a lesson to be learned here, I should have have bought GM.

One other idea: Is it possible that you have one link hanging below the crankshaft sprocket that should be properly seated but isn't? I had to keep correcting for that as I was assembling mine. It's a super-subtle thing that you need to specifically watch for. I found I needed to use a rag with a screwdriver wedged against the edge of the oil pan to keep the links around the bottom seated properly while I worked.

 

[Plimbob]

Dave, thanks for the idea, I'll try it again and make sure that isn't the case. As a test, I used the old chain to see if it would go on and it went right on. However, there is some slack in that old chain considering it was on there for 306k.

If it turns out all links are seated, I think I'll go to my local GM dealership and buy just the chain and see if it works. If so, I'll just suck it up and pay the $75.00 additional for the GM chain and get over it...

If that doesn't work, then I'll probably resort to taking off the Cloyes crank sprocket and return everything and get a GM kit.

Kind of a PIA!

 

[swathdiver]

Dave, thanks for the idea, I'll try it again and make sure that isn't the case. As a test, I used the old chain to see if it would go on and it went right on. However, there is some slack in that old chain considering it was on there for 306k.

If it turns out all links are seated, I think I'll go to my local GM dealership and buy just the chain and see if it works. If so, I'll just suck it up and pay the $75.00 additional for the GM chain and get over it...

If that doesn't work, then I'll probably resort to taking off the Cloyes crank sprocket and return everything and get a GM kit.

Kind of a PIA!

I have missed reading a few pages, some timing chain kits for LS engines are too wide for certain versions and have clearance issues.

 

[Plimbob]

Update -

I picked up a GM chain to marry up to the two Cloyes sprockets, still would not go on. I resorted to removing the new Cloyes crank sprocket, I looked at the new/old and with a naked eye I could not see any difference. So I put the old one back on, used the Cloyes cam sprocket and the GM chain and was able to seat the cam sprocket.

I do have a question regarding the torque of the cam bolt, it's a single bolt and calls for 55 lbs then 50 degrees. I don't have a torque wrench that measures degrees. Any thoughts on how to get to the 50 degree point without one?

 

[Geotrash]

Update -

I picked up a GM chain to marry up to the two Cloyes sprockets, still would not go on. I resorted to removing the new Cloyes crank sprocket, I looked at the new/old and with a naked eye I could not see any difference. So I put the old one back on, used the Cloyes cam sprocket and the GM chain and was able to seat the cam sprocket.

I do have a question regarding the torque of the cam bolt, it's a single bolt and calls for 55 lbs then 50 degrees. I don't have a torque wrench that measures degrees. Any thoughts on how to get to the 50 degree point without one?

You need an angle gauge.

https://www.amazon.com/Supercrazy-Torque-Wrench-Angle-SF0136/dp/B00L6I1874/ref=sr_1_5?crid=2ESBO03EVHATQ&keywords=angle+gauge+torque+tool&qid=1657576961&sprefix=angle+gauge+%2Caps%2C132&sr=8-5

Autozone also has them in their tool section.

 

[89Suburban]

Update -

I picked up a GM chain to marry up to the two Cloyes sprockets, still would not go on. I resorted to removing the new Cloyes crank sprocket, I looked at the new/old and with a naked eye I could not see any difference. So I put the old one back on, used the Cloyes cam sprocket and the GM chain and was able to seat the cam sprocket.

I do have a question regarding the torque of the cam bolt, it's a single bolt and calls for 55 lbs then 50 degrees. I don't have a torque wrench that measures degrees. Any thoughts on how to get to the 50 degree point without one?

Man you are a gluten for punishment! But I admire your persistence!!! Think of 50 degrees as 4 o'clock.

 

[Fless]

Man you are a gluten for punishment! But I admire your persistence!!! Think of 50 degrees as 4 o'clock.

Not sure I get that. Each hour on an analog clock is 30° so 50° would be just shy of 2 o'clock from straight up.

 

[89Suburban]

Not sure I get that. Each hour on an analog clock is 30° so 50° would be just shy of 2 o'clock from straight up.

Yeah I totally blew that good catch, I'll shut up now LOL.

 

[Rocket Man]

Not sure I get that. Each hour on an analog clock is 30° so 50° would be just shy of 2 o'clock from straight up.

This^^^

 

[Plimbob]

Haha, @89Suburban you are dead right about being a gluten for punishment especially considering it aint over yet...

I ordered the angle gauge Dave pasted in the thread. The way my luck has run on this project if I try to use the eyeball method of 2'oclock the !@#$ cam sprocket will come off in about 1,000 miles.