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Author Topic: Setting up timing on 1.8 8v  (Read 2753 times)

Offline Daston

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Setting up timing on 1.8 8v
« on: 26 July 2009, 10:41 »
Hi guys,

My engine is now back together however my timing seems out, turned the engine over by hand and I can feel the pistons hitting the valves. I have found the TDC mark on the cam pulley and can line that up fine, however how do I know when the Crank pulley and oil pump are at TDC?

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Offline Jay

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Re: Setting up timing on 1.8 8v
« Reply #1 on: 26 July 2009, 12:23 »
Check in the maintenance section Up ^ there :afro: full guide by RubJonny :wink:
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But for the purest engine experience, displacement has no replacement. All other methods are simply attempts to artificially recreate the benefits of displacement.

Offline fused

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Re: Setting up timing on 1.8 8v
« Reply #2 on: 26 July 2009, 13:55 »
the 8v don't contact the piston unless you have a high lift cam.

http://www.golfgtiforum.co.uk/index.php?topic=33253.0

follow that to the letter! and you should be ok.  :smug:
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Offline Daston

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Re: Setting up timing on 1.8 8v
« Reply #3 on: 26 July 2009, 15:56 »
Cheers guys!

So is the 8v a non interface engine then?
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Offline fishnchipsx2

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Re: Setting up timing on 1.8 8v
« Reply #4 on: 26 July 2009, 19:17 »
Yes, the standard 8vs are non-interference, although that doesn't mean you won't do damage by snapping a cambelt at 6000rpm!

What you believe to be pistons hitting the valves, is probably just the resistance felt when cranking the engine over by hand due to compression.  :smiley:
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Offline Ben Lessani

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Re: Setting up timing on 1.8 8v
« Reply #5 on: 26 July 2009, 21:38 »
Quote from: fishnchipsx2 on 26 July 2009, 19:17
What you believe to be pistons hitting the valves, is probably just the resistance felt when cranking the engine over by hand due to compression.  :smiley:

Taking the plugs out when turning should confirm that ^^
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Offline Daston

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Re: Setting up timing on 1.8 8v
« Reply #6 on: 26 July 2009, 22:37 »
Quote from: Ben Lessani on 26 July 2009, 21:38
Quote from: fishnchipsx2 on 26 July 2009, 19:17
What you believe to be pistons hitting the valves, is probably just the resistance felt when cranking the engine over by hand due to compression.  :smiley:

Taking the plugs out when turning should confirm that ^^

Ahh that makes sense!

Well when the weather decides to stop pi55in it down I shall go and have a look.
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Offline Daston

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Re: Setting up timing on 1.8 8v
« Reply #7 on: 27 July 2009, 21:52 »
Cheers guys worked a treat! Painted dots onto the crank and oil pump pulleys so its eaiser to line up next time. Am I right in thinking the cylinder to the right is number 1? It's just that I lined the cam saft up and the cylinder to the far right has both valves closed. I always assumed the one on the far left was number 1.
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Offline Ben Lessani

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Re: Setting up timing on 1.8 8v
« Reply #8 on: 27 July 2009, 21:55 »
Cyl 1 is the closest to the crank pulley.
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Offline Daston

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Re: Setting up timing on 1.8 8v
« Reply #9 on: 28 July 2009, 12:57 »
Quote from: Ben Lessani on 27 July 2009, 21:55
Cyl 1 is the closest to the crank pulley.

Hmm Ok thats what I thought. If the Cam pulley is in the TDC position shouldnt the valves on cylinder 1 be closed? I have lined the marker up with the top of the cylinder head yet 1 valve remains open on cylinder 1.
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