got a problem about my Duplex Timing Gear .
Turbo Mini Forums

i got a new Vernier Duplex Timing Gear . and i took two crank shims off to align both gear up . but when i put the chain back, i found a problem. the chain touch the two bolts behind the gear.

the trick is to countersink the backplate and use countersunk allen (socket) head screws.

Read the instructions.

Own the day

hi guys, i know this is an old post but im just fitting my dupplex, and has encounterd a problem also. i can get the big sprocket on the cam, its tight but it goes on, last bit i might need to tap it in.

bu the sprocket that goes on the crank that is bloddy tight... will need to use a big hammer to get it in. is this normal? my stock one goes in fine. oh and if i put the sprocket the wrong way round i get get it in to a certain point.. has this ever happend to anyone?

am i missing something really obvious??

pleas help

remove the key with a screw driver and get some emery cloth on the crank and give it a good going over.

do the same to the inside of the cam gear too.

no emery cloth here, i dont even know where they would sell it here in portugal, would wet and dry say 600 be good enough mate?

yeah, that will be fine, you might need to go a bit coarser

ok mate.. will give 250 a go and then a bit of 400 or 600 to get it smooth..

thanks for the tip mate

We just used a small file (attached to Benross' hand) when we put the vans engine together.

Often it is just the corners of the keyway in the sprockets - a small burr gets raised when the keyway is broached - so a small file on those two corners often helps.

The other thing that can happen is the key itself moves in a rocking motion as the sprocket is being pushed on so the far end (the end you can't see) starts to rise out of the groove and hence makes things go tight.

Schrödinger's cat - so which one am I ???

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble