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Author Topic: V6 engine questions  (Read 1436 times)

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JamesV6CDX

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V6 engine questions
« on: 06 April 2007, 09:54:20 »
Just a few questions, re project Elite's engine

1) After re-fitting the timing belt kit, engine all timed up... I just felt that it was a little too easy to turn over by hand (plugs in). Admittedly I was using a daddy of a rathcet.. but when I tried it with a small one, it still seemed a bit to easy to turn. Now, there's clearly compression there, and it may be absolutely nothing... but thought it's worth a mention

2) Not entirely sure what happened, fitting new cambelt kit. With the engine all lined up, fitted and tensioned the belt. Took up the slack on the idlers, and set the tension, ready for the initial rotation. Rotated once by hand, no problem. Made a few tweaks - rotated again, and it was out by 2 teeth on each cam - and the tensioner was backed right off! (Yes, the crank was in the correct place after fitting the belt!)

This happened twice, and I've no idea what caused it. I didn't ever rotate the engine anti clockwise, and I was lined up perfectly at all times when fitting the belt.

I started again from scratch - and didn't have this problem, the belt is now properly tensioned and in time. Never happened to me before... weird..

I must have turned the engine 20 times by hand after getting it right, to make sure nothing untoward happened again. The tension and timing remained perfect, and all pulley/tensioner bolts are torqued, so I assume there are no worries?

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Admin

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Re: V6 engine questions
« Reply #1 on: 06 April 2007, 10:25:01 »
Ahhh just fire it up and see what happens!  ;D

When you did the timing the first time you must have got something wrong for it to be that far out.
You did the right thing in starting again and that has been borne out in it going right this time.

I suspect the reason for less resistance is down to lack of oil in the heads?

Of course the omnipotent one will correct me and explain the correct reason I have no doubt!  ;)
« Last Edit: 06 April 2007, 10:25:50 by admin »
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theolodian

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Re: V6 engine questions
« Reply #2 on: 06 April 2007, 10:41:07 »
Probably lack of oil in followers.

My guess on the belt is that it slipped a tooth on the crank.  Happens to me every time.  >:(
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JamesV6CDX

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Re: V6 engine questions
« Reply #3 on: 06 April 2007, 11:11:03 »
Quote
Ahhh just fire it up and see what happens!  ;D

I like your style ;D

On a serious note.. what would have caused the tensioner to have been so "backed off" after it was tensioned and tightened?
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TheBoy

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Re: V6 engine questions
« Reply #4 on: 06 April 2007, 12:12:01 »
Quote
Quote
Ahhh just fire it up and see what happens!  ;D

I like your style ;D

On a serious note.. what would have caused the tensioner to have been so "backed off" after it was tensioned and tightened?
I think because the belt was on wrong, hence the tensioning done at incorrect point...
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JamesV6CDX

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Re: V6 engine questions
« Reply #5 on: 06 April 2007, 12:23:13 »
I'm inclined to agree... it's all correct now, so fingers crossed sorted..  :y
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Re: V6 engine questions
« Reply #6 on: 06 April 2007, 14:16:30 »
Stop worrying about things and get the job finished! We're waiting to find out what happens!  ;)
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Marks DTM Calib

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Re: V6 engine questions
« Reply #7 on: 06 April 2007, 14:33:15 »
Was the crank locked when the belt was first fitted......common mistake to forget...
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JamesV6CDX

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Re: V6 engine questions
« Reply #8 on: 06 April 2007, 15:15:07 »
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Stop worrying about things and get the job finished! We're waiting to find out what happens!  ;)

Slip....Snap... bang... crunch...bent valves?  ;D  ::)

All being well, should be somewhere near ready to turn over on Monday....





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JamesV6CDX

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Re: V6 engine questions
« Reply #9 on: 06 April 2007, 15:15:53 »
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Was the crank locked when the belt was first fitted......common mistake to forget...

It was the 2nd time around  ;D
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