my ride vt ecotec

[vt3.8lt]

Heu guys got my flywheel off and some 10mm dowels and i dont think theres enough room to drill the existing holes out to 10mm

[vt3.8lt]

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[Macca97]

machine up a stepped dowl? ive done it for other things but not flywheels, i doubt there'd be a problem in doing so

[vlad01]

sure there is, just seat the dowels slightly below the surface where the bolt heads go and its all good.

[vt3.8lt]

So you recon theres enough meat there to go up to 10mm vlad?

[vt3.8lt]

Otherwise i might machine the dowels down at work to the right size

[OZ38]

ok cool thanks for the help guys looks like im gonna sorce some 10mm dowels and drill out the crank and flywheel to suit i just home theres going top be enough meat left on everything once there drilled out as everything is quiet close together

I did a how to thread on fitting the dowels. I have a different opinion though on size of the dowels required. If they are a tight fit into the crankshaft & snug fit in to flywheel I believe 8mm to be plenty. The purpose of the dowel is to stop movement of the flywheel back & forth, which helps loosen the flywheel bolts & leads to broken bolts.

http://www.l67torque.com/viewtopic.php?f=46&t=10032

immortality we also used to use the taper pins for alignments, brings back memories of the apprenticeship days.

[OZ38]

Otherwise i might machine the dowels down at work to the right size

Use only harden dowel I reckon, unbrako sell them.ok

[Holden202T]

I reckon any weakening of the bolt holes from the dowel will be offset by the dowels themselves.

I reckon you also could offset drill them so they are inward of the bolt holes which will help with meat around the bolts.

[vlad01]

thats a good point the indexing holes in the crank are like that and are 10.3 and 11.4mm diameters.