Is this a NISMO Japan product or a NISMO U.S. product? There is a differance.

-Mike

 

Do you have pic?

 

Now you tell me
What are the specs on the 350EVO flywheel?

I bought it from my dealer and the accompanying documentation was in English so I assume it is US.

Nope, sorry.

 

There is no difference between the US and JDM Nismo Z33 flywheel.

Morepower

 

Dammit!! I just installed the NISMO flywheel, I pick my car up in 3 hours. I HAVE THE JUN sitting on the floorboard of my car and I told them to go with the Nismo because several guys were posting about drivability issues. Now I'm wondering if I may have made a mistake going with the Nismo flywheel.


I'll post results shortly

 

The Nismo flywheel is heavier because it is designed to be an improvment over the supendously heavy stock flywheel, but not compromise noise vibration or harshness nor be annoying in bumper to bumper traffic. Remember though that the stock flywheel is a mass damper for the drivetrain.

A lighter flywheel like JWT's will offer more snappy performance but will have more drivetrain noise. The clutch will have to be slipped more from a dead stop. Its not saying that the JWT is bad, its an excellent piece but its built for quick response at the cost of a slight increase in drivetrain noise and daily driving smoothness. The Nismo is built to improve response but keep noise and jerkyness to a minimum.

If you are into refinement in a daily driver and little things bug you get Nismo, if you are a performance guy and very minor vibrations and noise dosent bug you or are a racer get JWT.

Morepower.

 

i would have gone with the JUN.....nismo is not light enough for me. on my integra i went from 18lb to 9lb flywheel and it was amazing.

 

I just returned from Nissan with the new Nismo flywheel installed.

Pros

1) It revs a bit quicker
2) Throttle response seems slightly better
3) Engine braking when downshifting is not as intense so during cornering rev matching is not as critical. When autocrossing, I had a problem with a couple corners when downshifting and braking since the stock flywheel is so heavy, the intensity of the engine braking was more than I would have liked, now it seems a bit better.
4) smoother shifting
5)No more 2nd/3rd gear scratches

Cons
1) I can hear a rattle from start up to 2500 RPM's
2) No more 2nd/3rd gear scratches :-)
3) I didn't go with the JUN
4) it cost $525 and I don't think it will improve acceleration much if any.

Overall, I'm glad I went with at least the Nismo since the install was free anyway, I can live with the rattle noise (can't feel, only audible)and 2nd gear scratches probably aren't too good on the tranny/tires anyway. The real test will be at the track and more so at the next autocross event this Sunday.

I've got the JUN available for sale at $430 shipped today if anyone wants it. PM me for my phone #. 1st caller gets it.

 

The rattle you hear is normal with the light flywheels and proably worse with ligher units.

The Z32 makes the same rattle with a light flywheel at the same RPM. With a double disc clutch its really loud!

Morepower

 

Crap...you should have called me....I would have bought it back for what you paid for it since I have a back order list a mile long

 

Typical benefits of a lightweight flywheel:

There are significant benefits of an aluminum flywheel. Though a lightweight flywheel does not create additional horsepower, it does allow the engine to more rapidly transfer its power to the drive train. A lightweight flywheel allows an engine to have quicker throttle response due to its reduced mass. By reducing rotating mass, the engine revs quicker under acceleration. Conversely, under a drop throttle condition, the car will slow down quicker due to less rotational mass (inertia) at the crank.

Reduced mass equals increased acceleration.

A lightweight flywheel works particularly well with turbo-charged engines because it reduces typical turbo "lag".

Increased supercharger efficiency due to less parasitic drag on the crank

Improved mid-range torque in a normally aspirated engine due to not having to overcome the heavy weight of a stock flywheel.

 

This doesn't make any sense. S-Tune = Street-Tune. R-Tune = Racing-Tune. R-Tune is NOT meant for streetability so I don't think they would care if it would be annoying in traffic or anything like that. (I think thats what they mean...)

 

Its just R-Tune so it would not need to have the normal full battery of S-Tune valedation tests. It takes so long and costs so much it only makes sense to do it on high volume parts like exhausts and suspension.

Morepower