I just got a Jspec S5 13BT, and it has what I think is an aftermarket flywheel on it... ,but having never owned a TII, much less rebuilding one, I can't really tell if this flywheel is stock, or aftermarket.

If I had my digital camera working I would just post it, and hopefully someone would Identify it for me... but I don't/can't right now.

As for a description, It is made out of some type of steel, not aluminium. has 6 fasteners around the main flywheel nut. it has a row of holes just inside of the ring gear.

The thing that makes me think it is aftermarket is the six fasteners.... I think that it holds the counterweight(haven't taken it off yet). All the pictures I have seen(only N/A, not TII) have a solid flywheel, without these fasteners.

Any enlightenment would be appreciated.

 

my brother has a flywheel that fits that discription. its supposed to be after market. also he has a racing beat clutch so it might be by racingbeat.

but yeah the 6 holes are to hold it to the counter weight.

 

Well uhmm... lightened = not stock
not stock = aftermarket

....ain't logic great?

 

Stock flywheel is solid all the way through

 

heres what my bros flywheel looks like
its supposidly a lightened flywheel.
im not sure by who but he has a racingbeat clutch so mabee its racing beat.

 

fatboy: are you sure that flywheel is for a standard? It could be the automatic transmission flywheel. Can you see where a clutch bolts to it? Does it have a seperate counterweight? I have installed 4 different J-Spec engines and all of them had auto trannys.

 

Automatic transmissions don't have flywheels... they have torque converters...?
They use a viscous fluid to serve as the connection between the transmission and the engine. This is a peice of steel, w/swept area presumably from a clutch. Plus I don't see any room for fluid to be put in. so the slug-o matic is out.

Rs4Racer, It does look very similar to that flywheel, but not exactly. I can asume though that it is definately aftermarket, from the row of holes, and the 6 fasteners. But who makes it is still in question.

Any more pics... who will be the winner of "Who makes this flywheel." lol

 

Chances are, it's an automatic flexplate. How thick is it? Is it really thin - say 1/8" or so? If it is, then it's a flexplate. Does it have a steel surface for a clutch to mate to? Then it's a manual flywheel.

Here is a stock FC std. flywheel:
http://www.cdnwfl.com/~brian/images/Oct03_15.JPG

Here is an SR Motorsports lightened flywheel:
http://www.cdnwfl.com/~brian/images/Oct03_14.JPG
http://www.cdnwfl.com/~brian/images/Oct03_16.JPG

I looked around the shop for an auto flexplate, but we usually toss 'em as soon as they hit the garage. Here's one of a Ford. Flexplates generally look the same with the exception of balancing locations and such and are very thin. A flexplate may weigh somewhere around 1 to 3 lbs, where lightened flywheels usually start out at 9lbs and go up from there.

http://www.cdnwfl.com/~brian/images/trans20.jpg

 

Flexplate yeah I guess thats what it is called. Sure an automatic has one. You have to have something flat and round with teeth on it so the starter can engage it. It could be mistaken for a flywheel I guess but you're right technically autos don't have flywheels.

 

Its a flywheel. It is about 3/8" thick (much thinner than the pictures of the stock ones posted by Sledghammer) at the ring gear, and probably 1/2" at the center(it dishes inward, so its hard to say). It has a smooth flat surface that has obviously been made by the rubbing of a clutch. plus the remnants of a black powdery substance all over lead me to say that, yup its a flywheel. It looks very, very similar to the one posted by Rs4racer, with the exception that the swept area seems(if a picture can be used as a measure) to be slightly closer to the center, and there are no holes between this swept area and the flywheel nut. There are 24 holes on the outer portion of 1cm radius, so fewer, larger holes than that one. Any more pics?

 

Maybe you got lucky and someone in Japan installed on their car.