MrChad

Thanks yoda

as a percentage base per displacement 360hp is a good way from a full 400hp in a honda on pump gas. 400hp is still a lot for any 4 cyl, even a race engine that's an impressive number, ok maybe not if you are an F1 derived AER and own a Lola.

Yes, yes, I'm sure someone could find me a dyno graph of a turbo Civic with a hair dryer turbo pulling some insane peak number....

Even with an LSD 400hp on a FWD car is a scary sounding. Unless maybe you could program the ECU/PCM to limit the sucker in the lower gears to a much lower boost level keeping well below 300hp and only use the full power on the top end. limiting the boost might also help save a so called streetable clutch kit too.

..and with the comptech flywheel being a steel unit you won't need the friction disc, you just resurface that flywheel.

moda_way

Chad, wtf is your point. The answer to the original question is that this flywheel is plenty sufficient for all of the applications known on the TSX, those planned and those existing. So why you're going off-topic again is a mystery to me.

moda_way

Okay, I just got some tenative information from my contact at Fidanza:

-It should fall between 8.5 to 9.5 pounds
-Replaceable friction plate 1045 steel with high carbon content
-Replaceable ring gear
-6061 T6 aluminum
-Military grade fasteners
-Priced lower than Comptech's flywheel ($399 MSRP)

MrChad

1045 grade steel by definition is low to mid-carbon content at .45 wt%. The 10xx is a plain carbon series no special alloy.

High carbon content would be SAE 1090, 52100, or ductile iron. You are friends with 3 materials engineers and you work for a major engineering company, you'd think it would rub off a bit :P Just joking.

After years of engineering military grade still has no definable term without a spec. But it sure does sound cool doesn't it.

None-the-less it has be better then the cast lump rusting away behind the engine from Honda. What should scare you, are the bolt holding the pressure plate on military grade? It spins faster and is a lot heavier then the friction disc.

Thanks for the update though.

afici0nad0

so, given MrChad's comments, how does the fidanza product compare to comptech's?

fyi - comptech:

* Lightweight Chromoly-Steel One-Piece Flywheel
* Heat-Treated so re-surfacing will not affect durability
* Weight: 10.5 lbs. (5lbs. lighter than factory flywheel)
* Application: 04-07 Acura TSX
* Installation time: 9 hours +/-

moda_way

These are general specs and we don't have material specs. on the Chromoly-steel. To be honest, you have to question some of their information. 5lbs lighter would make it 13.2 lbs, not 10 lbs. I was a huge supporter of Comptech's products, but I like the Fidanza design.

moda_way

Oh, you guys are my friends. GEESH!!!! I've been under the impression I was the whipping boy in a gang of know-it-alls. I mean, you all do know just about everything and challenge me daily.

MrChad

I'm glad you finally admit we do know it all.


As for the comments on the Comptech wheel. Chrome-moly steel is most likely something in the 4140 family, a very heat treat friendly grade of steel.

The Comptech wheel looks to be cast (billet machined is the other option likely here, it may even be forged but that would be surprising). The Comptech wheel will work fine, but it's only going to have a finite service life (the same as an OEM unit) maybe 2-3 clutches because of how you resurface the wheel. I really like the Comptech design, very close to OEM; but lighter. If you have one, keep it, if you need one now and can find one go for it. But it is pricier.

The Fidanza wheel appears (at least my Accord unit) to be made of billet Aluminum, which is very economic to produce vs. special casting w/ machine work. The replaceable friction disc also means you can likely replace the disc forever never ever needing a new wheel, regardless of the number of clutches you go through.

The kicker is, do you really expect to keep this car 400,000mi and 3-4 clutches down the road? I say likely not for most of us.

Once in the car I doubt you could tell these designs apart, and that's all that matters.

moda_way

Oh great.

CCColtsicehockey

your screwed.

JTso

iTrader: (2)

FYI on the Comptech flywheel weight for comparision. It's 10 lbs 9.6 oz and also crank-centric like OEM.

TodaSi

Back in the day, yes I'm kinda old, I would have never bought a two piece flywheel. Reason being, the friction plate is attached by screws, and is a different material than the disc. With 1000's of heat expansion and contraction cycles, I was always afraid the screws would eventually fail to hold and bam! there goes the flywheel and any thing in it's way. That is why I always had cro-moly flywheels (Toda Racing).

As I have aged, I have discovered that although the theory is sound, I haven't seen any two piece flywheels fail, and I have been watching.

So it's very cool Fidanza is making a light flywheel for the TSX, and everything I have ever seen of them over the last decade + is great quality and awesome performance, plus they have always been fairly priced.

moda_way

Is this a recorded weight from someone or their site? I ask b/c as mentioned above, they say 10 lbs (5 lbs weight reduction from OEM). However, I know that the actual weight of the OEM is 18.15 lbs.

MrChad

The same could be said about the clutch pressure plate, everyone forgets that bugger spins with the flywheel all the same. The bolts holding it on to the flywheel are mighty small compared to what you would think. And you ONLY have 6!!! of them. The friction plate has a bunch of them...

JTso

iTrader: (2)

The 5 lbs reduction is probably a misquote, but the 10 lbs 9.6 oz is from an extremely reliable source measured on a postal scale at the post office.

moda_way

That is what I was hoping to hear, eventhough they are out of business. now.

MrHeeltoe

iTrader: (1)

So wait, why not just use a DC5 one?

UNEVAKNO

I dont know if there is possbility my scale is wrong or the 05 has a different flywheel than other year models but according to the flywheel weight that just came out of my 05 TSX 15 lbs and some change was the recorded weight. Not even close to 18.15 lbs. And I dont why you guys are waiting for a "TSX" flywheel when the market offers a zillion flywheels for the RSX that will bolt right up.

moda_way

Because you also need the RSX clutch kit too. Kind of a PITA when there is no reason why you should have to buy all RSX parts.

I'm going to check to see if the 05 got a lighter weight flywheel now.


EDIT: Just checked part numbers and they are the same for 04-07 model years. I shipped the box to Fidanza and it weighed in at 19.15lbs. Honda Parts catalog puts the weight at 8.255kg, so that translates in 18.2lbs (I personally recorded a 20lbs on my scale). Now either FedEx's scales are wrong or your scale was. I'll have to ask Fidanza to weight it as a 3rd one.

moda_way

^^^



EDIT: Got a response back from Fidanza and here is what I was told:

-Engagement from the engine mount to the ring gear is different.
-The step from the clutch to the friction plate is different.

Additionally
-TSX oem flywheel weighed in at 18.45 lbs. on our scale.

sunny85

nice i want one

moda_way

I'm sure Excelerate will be posting a GB of some sort.

Excelerate

iTrader: (1)

Alright guys I got some info from Fidanza. Here is some info on the flywheel. It has been designed and it has to be put into production. I am working on prices and production now. I will post up a GB to get some special AZ pricing going.

6061 T6 Aluminum
1045 steel friction plate
1050 steel and heat treated ring gear
Weight: 8 lbs

I need to get a list of people who are interested and ready to buy. The more I get the lower the price will go but I have to gauge interest. Please post ASAP b/c I want to schedule a production run.

moda_way

I'm going to start a "Interest In Thread" so as not to post interest 4 pages in or address questions about the flywheel.

FYI, my contact at Fidanza said, the more interest/orders, the faster the flywheel will be sent to production.

EDIT:

GO HERE TO POST YOUR INTEREST IN BUYING
https://acurazine.com/forums/showthread.php?p=695113

jiggaman

any updated pics of the flywheel?

moda_way

It will look nearly identical to MrChad's a page or two back. As soon as I get mine, I'll take pics. Obviously I won't be doing a DIY. This is one time I won't be DIY'ing

JTso

iTrader: (2)

Are you getting the clutch replaced at the same time?

moda_way

Yeah. Unfortunately I was trying to wait for Fidanza to also produce a clutch kit, but they are gauging sales of the Flywheel as input to making a clutch kit. Sounded kind of weird to me because most ppl would do it all at once, but its not my R&D $$ on the line either.

I'll be getting the 4 puck kit from ACT through Excelerate. They're the only ones that make a TSX specific application.

Excelerate

iTrader: (1)

Just to give ppl a general idea b/c I know they willl say they will buy based on price. If I get 10 guys it will be in the $300 range shipped. It maybe $10 +/- but that is a ballpark for you guys.

moda_way

^^Not to mention you have hella good prices on ACT 4 and 6 puck clutch kits.

jiggaman

so what benefits could i expect to gain from this flywheel?

moda_way

By having less rotating mass on the crank, you will notice increased whp and faster acceleration and deceleration.

Reach

Jigga, you have an AT, so none.

jiggaman

reach, first you thought that mr. heeltoe didn't sell EDM headlights and now you think I have an AT. Jeez man, what else do you have wrong.

I have a 6mt bro, always have.

Reach

If you haven't learned yet... i am always wrong.

My bad!

TSX 3Pedal

What is the proper technique/procedure to break-in a clutch?

Excelerate

iTrader: (1)

No burnouts/dropping of the clutch. No chirping gears. Basically go easy for at least 500 miles. Try and do driving that actually makes you engage and disengage the clutch, not just 500 highway miles.

moda_way

I heard from my contact at Fidanza. Looks like production will begin in a few weeks. They have a huge run of items prior to our flywheel to manufactured.

MrChad

As an FYI for anyone looking to purchase the Fidanza unit. I just had the F22/23-H22/23 model installed in my '00 Accord coupe.

Install went without a hitch so the shop says, no drilling or anything special needed, a true direct bolt on. I also confirmed this by purchasing all new bolts prior to the install from Honda.

I had the clutch kit and flywheel balance checked at a local shop, the flywheel was totally true so you shouldn't need to balance the K24 units.

Even with dropping some 12lbs.+ the car is totally easy to drive. I've only had it for about a week now and have only driven the car a few times as yet. It's not my daily ride but everything seems ok.

As far as the clutch flywheel kit goes.

The biggest problem I had was that Honda wouldn't do the install so I had to find a local shop for the job. Just over $450 for labor on this job.

moda_way

Just an update on timeline... My contact at Fidanza said the flywheel will be in production soon and estimating that I'll have a flywheel on my doorstep before the end of June.