I'm slowly obtaining parts for my F54/P79 engine build.  The block is all stock, no mods, and the head will be shaved .080 with the appropriate shims/spacers/valves.  Stock cam.   Not in any rush, I'd rather wait and save money for parts I want than rush it into the car.  That being said, I'm beginning to think that my original plan to buy a lightweight flywheel/stage 1 clutch won't be that good of an idea considering the amount of traffic in my area.  I use my Z daily in the summer, and while I take it out regularly for open freeway drives when everyone else is off the roads, It sees work commutes alongside Subaru's and Teslas. 

How light can I have a machine shop make my stock flywheel before I need to go beyond the OEM style clutch?

The stock clutch kit through Amazon looks like a good deal!

With 3.90 gears I drive around town in third gear with my TEP lightened flywheel . That was with a 2.4 with a 490 cam. If your engine is strong with those gears you will be fine. 

2 hours ago, SoCalJim said:

Thanks Leon!  I’m going to stop thinking!

 

58 minutes ago, siteunseen said:

Leon V suggested the cheap stock oem clutch and pressure plate was fine, and it was/is. Exedy 6009 I think from amazon, $100. Works great. Thanks again @LeonV

Saved me some $. I was about to go with a $300 stage 3 kit from Center Force.

??

12 hours ago, siteunseen said:

Leon V suggested the cheap stock oem clutch and pressure plate was fine, and it was/is. Exedy 6009 I think from amazon, $100. Works great. Thanks again @LeonV

Saved me some $. I was about to go with a $300 stage 3 kit from Center Force.

That's what I run in my racecar.  It has worked great.

How loud are these lightened flywheels?  I've heard they make a noise similar to a diesel truck?

Are there any lighter double mass flywheels (stock style) that are lighter which would eliminate the chatter (I can't find any)?

Edited November 6, 20195 yr by chaseincats

1 hour ago, chaseincats said:

How loud are these lightened flywheels?  I've heard they make a noise similar to a diesel truck?

Are there any lighter double mass flywheels (stock style) that are lighter which would eliminate the chatter (I can't find any)?

Never heard that before.

Get your OE one cut and lightened. Thats the cheaper route.

14 minutes ago, siteunseen said:

Never heard that before.

Get your OE one cut and lightened. Thats the cheaper route.

This is an extreme example of the single mass (light) flywheel noise - https://www.youtube.com/watch?v=3vUdmshAsYM&t=20s

I've heard shaving down the OE flywheel can weaken it to the point it may shatter if done improperly - is this true?

6 hours ago, chaseincats said:

I've heard shaving down the OE flywheel can weaken it to the point it may shatter if done improperly - is this true?

Sure, if done improperly or too much is taken off, it's the kind of job you want the oldest guy in the shop to do and know that he does it often.

Stock flywheels are single mass, dual mass flywheels were not around when these cars were built. A light one won't be any more noisy than OEM.

48 minutes ago, LeonV said:

Stock flywheels are single mass, dual mass flywheels were not around when these cars were built. A light one won't be any more noisy than OEM.

Ah ok, good to know.  Is the transmission chatter then a thing that happens when putting a single mass flywheel on a car designed for a double?

23 hours ago, chaseincats said:

Ah ok, good to know.  Is the transmission chatter then a thing that happens when putting a single mass flywheel on a car designed for a double?

That's been my experience, yeah.

I bought an off-the-shelf flywheel from Rock Auto.

Took it to my local machine shop with the diagram in Post #3 of this thread.

It has a real nice feel and combined with a 3.90:1 diff, really good off the line butt dyno.