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View Full Version : Engine Timing - Need help asap as im doing it right now


Chico999
23rd April 2010, 10:14
With te cambelt off the crank turned, the cams turned slightly aswell.

I need someone who knows exactly what they are doing with timing the cams to the crank.

I turned the crank so all pistons were halfway through travel and moved the cams back to locking points

Ive took the spark plug out of cylinder one, and used the screwdriver method to find TDC.

With it all in place, the cam markings doesnt match up the old belts markings, very slightly. Im thinking is it okay to use the vernier to adjust the pullys to get the right tension?

If i do, and fit the belt, turn the engine over by hand, will it physically not turn over even if its slightly out?

If anyones up for phoning me that would be perfect lol

Furioman
23rd April 2010, 20:05
it says in hayne that you lossen of the vernier to tension them

Olly
23rd April 2010, 20:22
What were you trying to do?

Get the pistons 1 and 4 to tdc. do this by poking the short end of a (4 or 6mm) allen key through the hole in the block that points towards the flywheel. Keep pressure on it and rotate the engine until it drops in and stops the rotation.

Then lock the cam pulleys in there slots with 8mm drill bits. Loosen the pulley to hub bolts. turn pulleys clockwise put belt on then tension and lock off tensioner. dont overtighten.

Next lock of the 6 pulley hub bolts and remove all locking pins. Turn over four times, then re-insert the tdc pin, and try to re-insert the cam locating pins. Adjust using the adjustable pulleys so they go in, then re-turn it over four times and check. should be gravy..

Olly
23rd April 2010, 20:23
secondly buy a haynes and follow it.

Chico999
23rd April 2010, 21:43
What were you trying to do?

Get the pistons 1 and 4 to tdc. do this by poking the short end of a (4 or 6mm) allen key through the hole in the block that points towards the flywheel. Keep pressure on it and rotate the engine until it drops in and stops the rotation.

Then lock the cam pulleys in there slots with 8mm drill bits. Loosen the pulley to hub bolts. turn pulleys clockwise put belt on then tension and lock off tensioner. dont overtighten.

Next lock of the 6 pulley hub bolts and remove all locking pins. Turn over four times, then re-insert the tdc pin, and try to re-insert the cam locating pins. Adjust using the adjustable pulleys so they go in, then re-turn it over four times and check. should be gravy..

secondly buy a haynes and follow it.

Does the tensioner have to be tensioned EXACTLY at the right point for there to be perfect slack all round? What did you use to prise it down?

I did but id been working on it for a silly amount of hours doing the gasket, wasn't thinking straight.

Thanks mate :y:

Gaz_5103
23rd April 2010, 22:13
as said above, should be grand.

Olly
24th April 2010, 06:44
Tension roughly want to be so finger and thumb can just turn it 90 degrees at the longest point.

I use a spare door handle spindle i had and cut it down

yr51ocw
24th April 2010, 09:35
olly - there is no 'long' run on the vts engine. So the reccomended tension is 45 degrees twist on the run between the exhaust cam pulley and the tensioner.