m20 flywheel hitting e34 oil pan

[luis.e30325es]

can anyone help me out?
engine is in, i don't mind taking it out as i already have to secure that reversed threaded nut for the oil pump.
i just need to know how much it needs to be shaved from the back side of it to fit properly with the pan.
any specifics?

[StereoInstaller1]

Flush with the teeth is standard

[Jand3rson]

I had them take mine down to about 1-2mm above the ring gear.

[StereoInstaller1]

That is the pic I am showing my machinist

[sticksdaman]

noob question, but how much did it run you, did they lighten yours as well aside from the shave?

@Janderson

[Adrian_Visser]

Umm shaving all that metal off is lightening it?

[Jand3rson]

noob question, but how much did it run you, did they lighten yours as well aside from the shave?

@Janderson

Adrian is right, just that amount they took off did lighten the flywheel by about 3-4 lbs, which is a lot. A lot of people will have a large portion of the mass from the center out toward the edge of where I had the flywheel milled out too, taking out another substantial chunk of weight, but the shop I took it to wasn't really able to do it with their setup, and I didn't want to go searching all over for a shop that could. That degree of lightening is really unnecessary, anyway.

To have that material removed as well as a resurfacing (make sure you do that), cost me about $85, which is a little high, but not outrageous.

[328ijunkie]

Picture ninja stolen for future reference ;)

[Jand3rson]

Please do, that's why I posted it!

[StereoInstaller1]

Please do, that's why I posted it!

changing lives one pic at a time

[sticksdaman]

Adrian is right, just that amount they took off did lighten the flywheel by about 3-4 lbs, which is a lot. A lot of people will have a large portion of the mass from the center out toward the edge of where I had the flywheel milled out too, taking out another substantial chunk of weight, but the shop I took it to wasn't really able to do it with their setup, and I didn't want to go searching all over for a shop that could. That degree of lightening is really unnecessary, anyway.

To have that material removed as well as a resurfacing (make sure you do that), cost me about $85, which is a little high, but not outrageous.

I meant to say resurface but my hands typed shave, brain fart.

Thanks for the reply, I was just gauging how much $ I should allot for that when the time comes (aka right now).

[z31maniac]

I told the clutch shop to make it 12lbs, they did, it fit.

And with Redline MTL in the trans, I had no "rattle" from the lightweight flywheel, and an S52 still provided plenty of torque to get away from a light.

[dreamchasin]

I had them take mine down to about 1-2mm above the ring gear.

When I did my swap using the G260, I had a local shop shave my flywheel like yours, but all the way down to the gears. Completely smooth around it, cost me $40 bucks. No rattle/vibration from it or anything.

[highoutput]

I threw mine on the brake leathe, and just kept cutting. Worked out great.
I also have an extra I'm selling, thats been cut down in back and resurfaced in front, if anyone needs one.

[luis.e30325es]

I am definitely going to show that picture to my machinist.
thanks for the help guys, greatly appreciated.