timing chain

[tpepmeie]

I have seen instances where there is not enough adjustment on the primary tensioner to remove all the slack. It may be necessary to shim under the wear face on the primary guide. Some aluminum or steel sheet stock of the proper thickness works if all else fails.

Jerry is right, the primary chain is very stout and I’ve never known of one to fail.

If the block has been line honed, it’s likely there will be excess slack.



Sent from my iPhone using ZR-1 Net Registry

[tommy]

That' s look my contact face

Wysłane z mojego VTR-L29 przy użyciu Tapatalka

[Jagdpanzer]

Looks normal for 64k miles



Sent from my iPhone using ZR-1 Net Registry

[tommy]

Could you tell me,what I should check before I will change primary chain?

[A26B]

Originally Posted by tommy

Could you tell me,what I should check before I will change primary chain?

You are checking the slack on the wrong side of the chain. You should be checking the slack on the opposite side where the Primary Chain Guide is located. You would normally adjust the Primary Chain Guide when there is no resistance on the Idler Sprocket (above the crankshaft), so that when you adjust the Primary Chain Guide, it will rotate easily to remove the slack as you adjust the Primary Chain Guide.

If you still have Secondary Chains connected to the Cam Sprockets, you will need to turn the crankshaft to make the Primary Chain tight on the side opposite the Primary Chain Guide. Once the Primary Chain is tight on the opposite side, the slack will be on the same side as the Primary Chain Guide. Then, press the Primary Guide against the Primary Chain, with only finger pressure, & tighten the Primary Chain Guide bolts.

Do this & see if you still have slack in the chain after correctly adjusting the Primary Chain Guide.

Jerrys Gaskets has all of the facings for both the primary & secondary chain guides.

[tommy]

Originally Posted by A26B

You are checking the slack on the wrong side of the chain. You should be checking the slack on the opposite side where the Primary Chain Guide is located. You would normally adjust the Primary Chain Guide when there is no resistance on the Idler Sprocket (above the crankshaft), so that when you adjust the Primary Chain Guide, it will rotate easily to remove the slack as you adjust the Primary Chain Guide.

If you still have Secondary Chains connected to the Cam Sprockets, you will need to turn the crankshaft to make the Primary Chain tight on the side opposite the Primary Chain Guide. Once the Primary Chain is tight on the opposite side, the slack will be on the same side as the Primary Chain Guide. Then, press the Primary Guide against the Primary Chain, with only finger pressure, & tighten the Primary Chain Guide bolts.

Do this & see if you still have slack in the chain after correctly adjusting the Primary Chain Guide.

Jerrys Gaskets has all of the facings for both the primary & secondary chain guides.

Big thanks for information! Unfortunaly all chains was out od the engine, but I will try to check this point. Could you tell me where I find information how correctly set timing chains,crankshaft...?

[A26B]

Originally Posted by tommy

Big thanks for information! Unfortunaly all chains was out od the engine, but I will try to check this point. Could you tell me where I find information how correctly set timing chains,crankshaft...?

1. Go to www.jerrysgaskets.com
2. Send me a message using "Contact Us" on Jerrys Gaskets
3. I will reply to you by email with .pdf files from the LT5 Training Manual.

[tommy]

Originally Posted by A26B

1. Go to www.jerrysgaskets.com
2. Send me a message using "Contact Us" on Jerrys Gaskets
3. I will reply to you by email with .pdf files from the LT5 Training Manual.

Done

[tommy]

Originally Posted by tommy

Done

I reinstalled the primary chain guide, pushed the guide the chain and tighten the bolts, result you can see below
https://youtu.be/DbUrUF0uKms

But when I did not tighten the bolts and put the tensioner only by my fingers, I think it was better

https://youtu.be/HgjTSy-tZVA

Wysłane z mojego XT1635-02 przy użyciu Tapatalka

[A26B]

Put a new facing on the guide & I think you will be good. There are a lot of LT5's out there with many more miles than yours with the original primary timing chain.