SPEC Flywheel
 

Not sure if this has been posted yet. Just what I have been waiting for!

http://www.specclutch.com/cars/Scion/FR-S/2013/Single

What do you think? How well do aluminum flywheels hold up?

Why is no one publishing weights? :bonk:

Alloy vs Cr-Mo lightweight flywheels are a tough call. Many of the alloy ones have replaceable friction faces giving them a potentially endless life. But the Cr-Mo ones are usually single piece and stronger giving them a better reputation for sustained high RPM use. I haven't personally heard of and alloy flywheel failing but it has been mentioned on websites I've read.

I have a feeling Cr-Mo is usually more expensive too.

The site has no detail to it at all wish they had pictures and spec's

I have read aluminum is too light for an everyday driver. Most likely around 9lbs I am guessing... GREAT for a track car I bet. Hopefully someone will come out with an 11lb wheel, or there about. I think that would be a happy medium for the vast majority.

i talked to spec a couple weeks ago im not sure its actually avail tho. They do make an excellent product tho. Also, Im sure the specs will be up whenever they have it available.

It's hard to say what the 86 will be like with a light flywheel. I'm running a 3.5kg (7.7lbs) flywheel on my celica. It's a Toda Cr-Mo one. It is by far the most noticeable mod I've done to that car. Drivability was affected but not that much and the performance gain far out weighed the small loss of drivability. But it will come down to personal preferences.

I will be looking to put the lightest flywheel I can on my 86 tho :D

I have a spec clutch in my current project. It holds up very well. Barely slips at over 500whp when it gets hot.

I'll take one in aluminum. A lightweight flywheel and the disco potato.... epic. This combo worked wonders on a previous project I did years ago.

Did they confirm this is an aftermarket replacement for the OEM flywheel stepping and dowel pins?

I've been running my 10lb Fidanza aluminum flywheel for 7 years now and I love it in my car! It really woke up the car's response and I have no complaints about driveability. I have one for my 240Z too, but I haven't installed it yet. I think my friend runs one on his 240SX.

Oh, SPEC flywheel. Well, close enough. I have a SPEC clutch and Fidanza flywheel. As long as it's over 10lbs I'm sure it will be fine. One of the things that Orido/Taniguchi/Tsuchiya (can't remember which, maybe two of them?) said when they test drove the stock car was that it would feel much better with a lighter flywheel.

Aluminium flywheels are cheap to make and expensive to buy, you dont see aluminium flywheels on wrc and wtcc cars and there is a reason. aluminium is 1/3 the weight of steel but also 1/3rd the strength so you need 3 times as much.

TTV Racing components make chrome moly flywheels to replace the OE part 3.6kg and ship world wide at sensible prices

SPEC are the worst clutches... the fitment is always wrong, and after the 5th time someone brought one in that wouldn't physically fit into their car because of alignment problems. I will never install another SPEC clutch again.

Some of the other problems i've had with them....Had some of them missing bolt holes to the flywheel. missing springs, had one that the holes were so off center wouldn't even fit on the flywheel centered.

go for anything but spec

How difficult is installation?

It would be the same as installing a new OE flywheel

To be honest i would worry about going too light with a flywheel in this car, especially with the idle issues that plague this car. The flywheel's mass helps the engine rotate because the weight of the flywheel gives it inertia. The lighter the flywheel the more work the actual pistons, connecting rods, and crank have to do. It also gradually slows the engine down when you let off the gas. I would wait for companies to do actual road testing of these before dropping money on one.

I did however pick up my Clutchmasters FX400 (6 puck) clutch and flywheel today. When I get a chance I will weigh it and when I pull the original I will weigh that as well for a difference. Vivid Racing weighed my Clutchmasters clutch but I cant remember the weight off the top of my head but they said that the whole flywheel/clucth combo weighed about the same as just the stock flywheel. I'll have to measure this to make sure. It certainly feels heavier than the claimed 27lbs, but that could be due to it being awkward to handle.