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Dowel on flywheel dg engine
Posted: 29 Apr 2024, 18:31
by Wbxnewby
I want to rotate my flywheel by a fifth of a rotation as the ring gear is worn in the normal crank stopping places. It has a dowel in the crank so I would drill another hole in the next quadrant of the flywheel holes. Is there any reason the crank has a dowel and any reason I can’t rotate by a fifth. I am guessing the dowel is needed if a flywheel has a TDC mark or something, but I can’t see anything like that.
Re: Dowel on flywheel dg engine
Posted: 29 Apr 2024, 19:14
by Stesaw
I dont understand what you're trying to achieve.
TDC mark on the pulley is a U shaped groove and the timing mark is a V shaped groove.
I thought the tdc arrow/mark was on the clutch for the flywheel.
Re: Dowel on flywheel dg engine
Posted: 29 Apr 2024, 19:55
by Aidan
Flywheel has a TDC pickup on the back , should be a pickup cable coming from the top of the case face the connector of which should be secured to the alternator, it only works with the original factory VW diagnostics tool/scanner; most engines that have been rebuilt have lost the sensor and cable and now just have a hole in the case or the shortened remains of the sensor acting as a bung
so that's why the flywheel is dowelled and the bolt pattern odd
Re: Dowel on flywheel dg engine
Posted: 29 Apr 2024, 20:01
by Stesaw
Aidan wrote: ↑29 Apr 2024, 19:55
Flywheel has a TDC pickup on the back , should be a pickup cable coming from the top of the case face the connector of which should be secured to the alternator, it only works with the original factory VW diagnostics tool/scanner; most engines that have been rebuilt have lost the sensor and cable and now just have a hole in the case or the shortened remains of the sensor acting as a bung
so that's why the flywheel is dowelled and the bolt pattern odd
Forgot about that!
. All the ones I've seen have been cut as there are defunct so it just gets omitted from my brain..
Re: Dowel on flywheel dg engine
Posted: 02 May 2024, 05:41
by Wbxnewby
Useful info thanks. I will reuse the flywheel now I can rotate it 1/5 .
Re: Dowel on flywheel dg engine
Posted: 02 May 2024, 09:18
by davidoft1
Wbxnewby wrote: ↑02 May 2024, 05:41
Useful info thanks. I will reuse the flywheel now I can rotate it 1/5 .
Not sure you can, the bolts holes positions
aren’t all the same
Re: Dowel on flywheel dg engine
Posted: 02 May 2024, 14:36
by silverbullet
davidoft1 wrote: ↑02 May 2024, 09:18
Wbxnewby wrote: ↑02 May 2024, 05:41
Useful info thanks. I will reuse the flywheel now I can rotate it 1/5 .
Not sure you can, the bolts holes positions
aren’t all the same
Thats inline engines
Re: Dowel on flywheel dg engine
Posted: 02 May 2024, 17:30
by Wbxnewby
Is it worth drilling a hole for the dowel in the flywheel or just removing dowel from crankshaft I wonder. I guess if it pulls out easily…still getting over 2 broken head studs and crankcase welding on eroded water jacket.. so trying to save the environment and the cash..
Re: Dowel on flywheel dg engine
Posted: 31 May 2024, 19:55
by Wbxnewby
Flywheel rotated by 1/5 rotation. All working fine and starter engaging every time. Thanks for advise