Timing chain

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Dec 17, 2017 | 10:41 AM

ovaboost

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From: IOWA

Timing chain

Hello all im in the works of timing my motor and have got it timed with all new gm gears and a Katech c5r chain and now the problem is there is way too much slack on the chain has anyone had this problem and how did yall fix it built forged lq4 for with twin turbos...im about to throw this **** away and get a new timing set from cloyes. I also found other post but didnt help much

Dec 17, 2017 | 11:40 AM

G Atsma

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From: Central Cal.

Define "too much slack".

Dec 17, 2017 | 11:46 AM

z-maro

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From: MN

Here is the slack that my stock one had with 62k miles:

I went with a Cloyes and a Trick Flow damper for some added insurance.

Dec 17, 2017 | 12:02 PM

pantera_efi

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From: Santa Ana, CA. USA

Avon Gear Timing Set

Hi Ova, this is the common timing set used in a GN-West engine.

This is what I SELL/INSTALL.

You WILL find the requirement for the Cam Tunnel/Main Bore distance different between an AL/Iron Crankcase.

What is your crankcase material ?

The sprockets are steel with heat treat, the chain "oils" each link with a passageway, the links are much wider that the IwIs chain.

Lance

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Dec 17, 2017 | 01:30 PM

ovaboost

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From: IOWA

Quote:

Originally Posted by z-camaro

Here is the slack that my stock one had with 62k miles:
https://www.youtube.com/watch?v=9oQZ1_ZtPpk

I went with a Cloyes and a Trick Flow damper for some added insurance.

the video you posted is the same amount of slack i have

Dec 17, 2017 | 03:08 PM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

I just did a c5r chain (nice piece) that had about that much slack. Threw on a damper and gonna let it eat.

Dec 17, 2017 | 03:21 PM

G Atsma

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From: Central Cal.

As said, the aluminum block "grows" as it warms up, causing the chain to tighten up properly. Run it.

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Dec 17, 2017 | 04:05 PM

ironmanLS1

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From: Export, PA

Quote:

Originally Posted by G Atsma

As said, the aluminum block "grows" as it warms up, causing the chain to tighten up properly. Run it.

That's part of the problem, too many people slap **** together and "run it".

Dec 17, 2017 | 04:27 PM

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ovaboost

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From: IOWA

I have an iron block lq4 not aluminum ls2.. i would hate to mess up my fully forged engine over a dumb *** loose chain for 150 dollar chain i figured this thing would be nice and tight what a joke.. even the old jp cheap chain i ran before hardly had any slack

For what i have in this c5r chain and gm gears i should went with cloyes kit

Dec 17, 2017 | 04:34 PM

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01ssreda4

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From: Turnin' Wrenches Infractions: 005

Quote:

Originally Posted by ironmanLS1

That's part of the problem, too many people slap **** together and "run it".

Engine grows, needs some slack. Too tight and you wear your front cam bearing....ever looked at em, they are usually half trashed anyway. These motors have ALWAYS been this way, since 1997. Thats 20 years, so dont act all high and mighty.

Its fine. Chain failures are not common in the LS world at all.

Dec 17, 2017 | 06:01 PM

#12

G Atsma

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From: Central Cal.

Quote:

Originally Posted by ovaboost

Iron blocks, actually ANY blocks, grow too, just not as much. You'll be fine. The timing set you have will work, they are the same for almost all LS engines.

Dec 17, 2017 | 07:24 PM

#13

pantera_efi

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Block Align Bore = Slack

Hi ALL, my BET is that "OVA" had his block Align Bored.

I have measured the Front Main "flex" by "prying" the crankshaft in the direction of the cam, you would be amazed.

Lance

Dec 17, 2017 | 08:28 PM

#14

ovaboost

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From: IOWA

Quote:

Originally Posted by Pantera EFI

Hi ALL, my BET is that "OVA" had his block Align Bored.

I have measured the Front Main "flex" by "prying" the crankshaft in the direction of the cam, you would be amazed.

Lance

it was all sqaured off and used bore and hone on torque plate and all the goodness of building a short block from what my engine builder said to prevent flex.... but it has just as much slack as the ls1 chain video posted above ill call katech see what they say

they may say i need a timing damper

Dec 18, 2017 | 06:55 AM

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vettenuts

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From: Little Rhody

Katech was recommending the Cloyes sprockets (gears if you will) and a damper last time I read some of their technical information (Jason is on this forum so you can send him a PM). I would definitely install the damper while its apart. I ran the Katech C5R chain and GM sprockets in my first setup. Also installed the GMPP damper. There was some slop but no issues. I have since upgraded to the IRL (rain) chain with the Cloyes Hex-adjust and damper. This setup is no longer available and SDPC bought the last sets from Cloyes several years ago. Not sure if they have any left but this was the ultimate timing setup for the LS motor.