Author Topic: new 16v timing chain  (Read 5870 times)

Offline bodga

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new 16v timing chain
« on: 21 May 2011, 08:55 »
Just a heads up really.....

yesterday afternoon i replaced the timing chain and cam cover gasket on my valver because the chain was noisey. the new chain i fitted was very tight compared to the old one that had about 5-10mm slack   :shocked:

Took her for a test drive after i finished, what a foooooking difference it made!!!!!!


smoother tickover, better response from low revs, and after 4000 revs  :grin: :grin: :grin:

If you have a valver lads and lasses and that chain is singing a tune, get it changed FTW

Best mod you can do for more horses :cool:

Bloody thing wont start again when warm now thou, i suppose its produced higher compression??

I think i need to service or replace the starter, and clean the -ve strap that goes to the gearbox from the battery when i get a min. I cleaned and greased the starter connections last time i had this problem.
« Last Edit: 21 May 2011, 09:01 by bodga »

Offline Simeon

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Re: new 16v timing chain
« Reply #1 on: 22 May 2011, 01:05 »
Bloody thing won't start again when warm now though, I suppose its produced higher compression??

How on earth did you come to that conclusion?

If this is a problem that has occured since the work then the obvious reason is that your timing is incorrect.

Offline Sam

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Re: new 16v timing chain
« Reply #2 on: 22 May 2011, 15:45 »
After doing rings and head on my golf she doesnt like to start when warm. You can hear its all tight but should loosen up soon enough as I have only done 300 miles in her. I'm not too worried but, should I be?


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Offline bodga

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Re: new 16v timing chain
« Reply #3 on: 22 May 2011, 17:59 »
Bloody thing won't start again when warm now though, I suppose its produced higher compression??

How on earth did you come to that conclusion?

Inlet valves shutting a bit earlier on compression stroke :huh:. The exhaust valves are on the belt pulley so the only timing adjusted by replacing the chain is on the inlet valves

If this is a problem that has occured since the work then the obvious reason is that your timing is incorrect.

All cam belt timings are spot on, dizzy is in same position that i took it off, but i havent timed it up with a strobe. she flyes thou with no pinking and on reg unleaded not super unleaded (never put super in since ive had it :rolleyes:)





it was struggling to start before i replaced the chain but its just getting worse.

Ive been to the scrappy today and removed a beefier -ve lead off a polo (same length with all connections and twice the thickess wire :grin:)and ive doubled up on the +ve from the starter to the battery.......

still no good when she is hot :cry:.

If i leave her 20 mins she will start but if I stall it Im fooked!

Ive a spare starter somewere i will service and try when i have a min


If i leave her 20 mins she will start but if I stall it Im fooked!

Offline bodga

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Re: new 16v timing chain
« Reply #4 on: 22 May 2011, 18:04 »
After doing rings and head on my golf she doesnt like to start when warm. You can hear its all tight but should loosen up soon enough as I have only done 300 miles in her. I'm not too worried but, should I be?

my mate rebuilt his valve, rings, shells n stuff and slapped some bike carbs on. he brought an £150 battery from halfords to turn his over :laugh:

It should loosen up just make sure it dont overheat before it does, take it easy with the right foot for a bit  :wink:

Offline Simeon

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Re: new 16v timing chain
« Reply #5 on: 22 May 2011, 18:17 »
Inlet valves shutting a bit earlier on compression stroke :huh:. The exhaust valves are on the belt pulley so the only timing adjusted by replacing the chain is on the inlet valves

Oh right, so you're just achieving factory compression (minus wear over the years). Pretty sure they started from hot from the factory.

All cam belt timings are spot on, dizzy is in same position that i took it off, but i havent timed it up with a strobe. she flyes thou with no pinking and on reg unleaded not super unleaded (never put super in since ive had it :rolleyes:)

You say it was struggling before you did the cam chain, so leaving everything in the same position won't have helped resolve any issues. Get it set up correctly and double check all the marks, especially the cam marks where the chain is.

You've done what you can with the wiring, so next step would be to check starter motor.

Offline Sam

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Re: new 16v timing chain
« Reply #6 on: 22 May 2011, 19:51 »
Mine was fine before, and I marked up the timing belt before removing it and then marked up the old one accordingly. She is all gravy just a little 'tight' when warm i guess. Cam timing is like so ---->     >)(<    with the cam pully at tdc


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Offline danny_p

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Re: new 16v timing chain
« Reply #7 on: 22 May 2011, 23:55 »
thnk you'll find ignition timeing is out
all the VW's have gone bar 1.

Offline Thom89

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Re: new 16v timing chain
« Reply #8 on: 23 May 2011, 00:06 »
thnk you'll find ignition timeing is out

Beat me to it! :wink:

Thom

Offline Sam

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Re: new 16v timing chain
« Reply #9 on: 23 May 2011, 10:32 »
Who, me or the other guy  :huh:


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