Cracks in flywheel (GQ TD42)

[Mark2]

Am in the process of replacing my clutch and have noticed that the machined part of the flywheel where the driven plate runs has quite a few small radial cracks about 20-30mm long.

Are these a problem? The manual doesnt say anything about whether machining the flywheel is possible. Can it be machined safely or should I just ignore the cracks. The rest of the surface is quite smooth, ie not scored.

[Not For Highway Use]

I wouldn't risk it. I have heard of flywheels shattering mostly in street cars. The bits go straight through the bell housing. Maybe your feet. Get it checked out by the workshop that machines them..

[PEACEOUT]

I put a flywheel with cracks in it, behind my 308 bout 3 years ago, no probs so far.

[embryo]

what type of car is it, some of the GU supposedly have a non machineable flywheels

[Mark2]

Its a GQ 4.2 diesel. The manual (Gregories) says the flywheel should be renewed if excessively scored or cracked. This might mean its non-machinable????????

I cant see the thing flying apart due to low revving motor and the cracks appear to very shallow but I dont want to pull this gearbox out again in a hurry either, or stuff the clutch which looks like costing me about $400 in parts.

[embryo]

as far as i know you can machine that flywheel, with out seeing the the cracks its hard to say what to do, but id just machine it. it could be warped like you said you dont want to be pulling the box out again,

[Hoonz]

i'd recommend machining the flywheel before u put a new clutch in ...


i did mine on a TD42 before putting a safari dakin clutch in

machined flywheel

perty daikin clutch