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crossflow timing chain
02GF74 - 31/3/08 at 08:02 AM

some questions about timiung chain
1. how can you measure if chain is worn?
2. is it a good idea to replace just chain and crank sprocket but run with old cam sprocket? (cam sprocket is the £££ as it is vernier)
3. how strong is the tensioner? it has a tiny hair spring but with ratchet that I assumes pushes the tensioner forwards but never back due to serations - so if tensioner is loose, then the rubber is worn?

Mr Whippy - 31/3/08 at 08:14 AM

Its good practice to replace both cogs and the chain at the same time as having an old cog will just reduce the life of the new chain. For piece of mind I'd personally replace it all including any wearing parts on the tensioner as the consequences for the engine if the chain let go are worse than that for a snapped belt. Anyway I expect you will be caning this motor to an inch of its life

procomp - 31/3/08 at 09:00 AM

Hi if replacing you may as well upgrade to a duplex kit. Kit includes the two sprockets and the Cam sprocket is a vernier. Price from Burtons is £62.50 .

Part No: FP217K Status: Available from stock.
Item Price: £53.19 Surcharge: £0.00 Price: £53.19 (exc.Vat) £62.50 (inc.Vat)


Description: DUPLEX CAMSHAFT SPROCKET SET (DOUBLE CHAIN): X/FLOW & PRE-X/FLOW

Other Info: INCLUDES ADJUSTABLE CAM SPROCKET, CRANK SPROCKET & CHAIN. NOT SUITABLE FOR FIESTA


Cheers Matt

Marcus - 31/3/08 at 12:06 PM

I was always told not to fit a vernier gear on a crossflow, use offset dowels instead.
Verniers can move and they're a sod to get to inside the timing cover - unlike pintos etc.

02GF74 - 2/4/08 at 11:06 AM

quote:
Originally posted by Marcus
I was always told not to fit a vernier gear on a crossflow, use offset dowels instead.


yeah but isn't the gear held on by friction when the bolts are done up? Sure someone on here said a while back that someone just uses some strong glue without the need for pins.



[Edited on 2/4/08 by 02GF74]