Lightened flywheel...

[titaniumdave]

Here is my latest DIY project, couple of hour on the milling machine, hand full of carbide cutters and 1.2 Lb. of flywheel removed for my Excedy dual disk flywheel! Now I will drop it off to get balanced and I will be good to go!!!

I think the holes look racy, good thing I took picks since I won't see it again for a long time once installed...

 

[ChitownNSX]

That is getting a bit crazy!!

 

[nsxotic911]

You selling?

 

[whrdnsx]

Nice job Dave!!

I think you'll like my Clutch/Flywheel project I'm working on at the moment too.
I'll post some pics when I'm done.

 

[titaniumdave]

You selling?

I want to finish this one and see how it balances. See if I need to balance the whole clutch or if I can get by with just the flywheel, etc....

Once R&D is done, I will be selling. Will post in the Vendor section. Right now it's just a personal project.:wink:

Wayne,
Can't wait to see what you are up to....:biggrin:

 

[Ponyboy]

Wow, your engine is going to rev much quicker! That's a bunch of weight taken out the flywheel.

Hmmm, I've got an Exedy clutch...

 

[popsicle]

remember you can only take off so much. there is a reason to the mass of a flywheel. drawbacks include excessive rattling sometimes at idle. i have a lightened flywheel in my car. and have had in numerous other cars i've owned.

 

[ncdogdoc]

Great work Dave,

Now where is my damn block off plate?!?!?!?!?!?!

 

[titaniumdave]

So I had the flywheel balanced, only off by 3 grams! Took less to balance it from my work than when it was originally made!:biggrin:

I can duplicate this set up for $220, balanced. But not till I finish Gary's oil block off...:redface:

 

[nsxotic911]

remember you can only take off so much. there is a reason to the mass of a flywheel. drawbacks include excessive rattling sometimes at idle. i have a lightened flywheel in my car. and have had in numerous other cars i've owned.

Except for serious track applications, is this low of a weight reasonable? How fast does the car 'rev down' when you switch gears? Is it to the point that you have to shift super-fast (and thus put more wear, tear and potential damage on the transmission...)

This is 8 lbs lighter then a 'light' flywheel! Dang!

 

[titaniumdave]

With this mod you will still have a 26 lb. + clutch. Not really 'track only' light by any means. The Tilton carbon carbon set is 12 lb. complete, now that is light!

There is never a need to shift 'super-fast', you may want to learn to rev match, but one should do that anyway.

popsicles' comment does not make any sense, the mass of the clutch and flywheel has nothing to do with rattles. A poorly balanced and light flywheel might, or a multi disk clutch with floating plates mounted to a light flywheel.

 

[KooLaid]

Dave, I emailed you based off your website listed since you don't have a PM or email option on prime. Curious if you received it? It was in regards to the short shifter. thanks!

Just checked.... I guess the reason you didn't have a PM or email option listed was because I wasn't logged in to prime on the computer I was on at the time! lol

 

[nsxotic911]

With this mod you will still have a 26 lb. + clutch. Not really 'track only' light by any means. The Tilton carbon carbon set is 12 lb. complete, now that is light!

There is never a need to shift 'super-fast', you may want to learn to rev match, but one should do that anyway.

popsicles' comment does not make any sense, the mass of the clutch and flywheel has nothing to do with rattles. A poorly balanced and light flywheel might, or a multi disk clutch with floating plates mounted to a light flywheel.

Hmmm... you're right, I rev match when I shift.. but I'm sure it gets that much more critical when your flywheel is so light.

I haven't tried the Tilton but it sounds very aggressive. The RPS is going to be installed in my case...

Anyway, great work!

 

[MCM]

You probably already know this, but thought I would throw it out there anyway......
Have never done an NSX flywheel, but have lightened a few on other cars.
Mainly solid lifter V8's.
Most noticeable results were on a 71 BMW 2002.
Took it down to around 1/2 its orig weight (it was a pig) when converting to a 5 speed O/D.
Here is the tip.. after you get the flywheel balanced, install the clutch assembly and balance it as unit.
Really makes a difference.
Again, not sure if its feasible on an NSX, but worth a few extra RPM's & really smooth's things out.:smile:

 

[titaniumdave]

You probably already know this, but thought I would throw it out there anyway......
Have never done an NSX flywheel, but have lightened a few on other cars.
Mainly solid lifter V's.
Most noticeable results were on a 71 BMW 2002.
Took it down to around 1/2 its orig weight (it was a pig) when converting to a 5 speed O/D.
Here is the tip.. after you get the flywheel balanced, install the clutch assembly and balance it as unit.
Really makes a difference.
Again, not sure if its feasible on an NSX, but worth a few extra RPM's & really smooth's things out.:smile:

Hey Mark,
Thanks for the tip. This Excedy dual disk has a floating mid disk and pressure plate which ride on 6 dogs. My shop was afraid there was too much slop in the set up so we are only doing part of the clutch. We are going to go back and balance the crank, clutch and the 6 rib pulley I am making, as a set. this should catch most of the issues.

How goes the race car search???

 

[MCM]

Dave, was not sure how you would center & spin as a unit?
But thought a crafty guy like yourself could figure something out.
Maybe an old shaft and............
Am sure it will be fine.:smile:


How goes the race car search???


Looked at a couple on-line but didn't find anything with a history,
log book etc. Mainly just tired cars in need of $$$$.

So, maybe another NSX? (Garage queen?)
No, I have one now that I never need to work on.
Just polish, add gas & go.
On the other hand maybe an M3?
l do miss steering with the gas pedal.
Still have an open spot in the garage, something will fill it.
Just not 100% sure what it will be this time?:tongue:
As always, your car is paving the way.
Later
Mark

Added, here is a deal on track tires in case your interested.
http://www.tirerack.com/tires/tires...&vehicleSearch=false&fromCompare1=yes&place=7