So now I know......

So now I know......

Author
Discussion

sagalout

Original Poster:

18,906 posts

289 months

Friday 30th July 2004
quotequote all
So now I know why they put two front plate gaskets in the gasket set.
Fitted the front plate, then got out the Duplex chain set and found two countersunk screws. What are they for? Ahhh, the crank sprocket fouls the bolts into the bearing cap. These countersunk screws must fit there, but the front plate needs countersinking for them to fit......
Am I missing something here???
Reminded me completely of Cooperman's timing cover story.

phil hill

433 posts

283 months

Friday 30th July 2004
quotequote all
No you're not missing something, yes the front plate needs countersinking to fit the screws.

Phil.

Cooperman

4,428 posts

257 months

Monday 2nd August 2004
quotequote all
Can I jump in here? Make sure you use a proper countersinking tool, not just a bigger twist drill. A twist drill has a different angle of cut and if the screws are not snug into the countersink and come loose the result is not too good!
Use socket head screws as you can't get the phillips head ones tight enough. Also, use 'Loctite' and, maybe 'stake' the bolt heads into the plate by belting a centre-punch into the edge of the c's'k screw where it meets the plate to create a burr which helps hold it in place. From memory the screws are 1/4" unf x 0.5" long.
I hope this is helpful. I'll be doing exactly this later this week when my Metro GT cam finally arives.

sagalout

Original Poster:

18,906 posts

289 months

Monday 2nd August 2004
quotequote all
Hmmm. used a bigger drill but the end had been sharpened, used the countersunk screws provided, got them as tight as I could but was wondering.....looks like the cover might be coming off again...
the screws do come very close to the chain...
Bu66er!