retromods
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| posted on 8/3/11 at 12:20 AM |
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timing belts
Hi im on the lookout for timing pulleys/belt for my twincam conversion. Due to the small crank pulley, ive found
this 5M Pilot bore metric timing pulley. 5mm Pitch. To suit a 15mm wide
belt.
is that going to be good enough for a high reving twincam engine? i cant find a 8mm small enough. Other option is an L shaped belt but as L stands for
Light and the 5M is a HTD belt i assume its better for the job, but is it good enough???
cheers
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JAG
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| posted on 8/3/11 at 10:25 AM |
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What's wrong with buying original spare parts?
I wouldn't trust off-the-shelf parts for a vital job like cambelt timing. You can bet that Vehicle manufacturers don't use off-the-shelf
parts 
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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MikeRJ
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| posted on 8/3/11 at 10:41 AM |
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quote:
Originally posted by JAG
What's wrong with buying original spare parts?
The clue is in the word "conversion". If you are converting an engine to use a twin cam head from something else, you don't tend to
get OEM parts designed for the purpose...
15mm seems rather narrow to me - is this pulley for the cams or the crank?
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JAG
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| posted on 8/3/11 at 12:48 PM |
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Ok - now I understand.
In which case I would look for a suitable set of pulleys and belt from an OEM installation.
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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retromods
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| posted on 8/3/11 at 01:59 PM |
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ive searched high and low for pulleys off a different engine but what i need appears to be too small.
i could go 25mm and get a re-enforced belt
edit..... that small pulley is for the crank, will use 2 larger ones for each cam
[Edited on 8/3/11 by retromods]
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