My Honda buddy said to give Competition Clutch a call. They do custom work and have a contingency program.

I sent them an email. Hopefully they'll either do it, or point us in the right direction.

 

I'm not sure you want a lighter flywheel for our applications. I actually sold my Fidanza because I wanted the rotational mass during low rpm driving and to reduce the severe clutch chatter I was experiencing with high capacity puck style discs. There is also opinions on various clutch manu. sites about going too light and damaging your drivetrain.



Whether the last part is true or not, at 500hp, I'm willing to sacrifice 7hp for piece of mind and driveability.

 

Yeah good point Jon. Please post up anything you may hear from Competition Clutch, I'm interested to see what they can do for us. I went to the Clutchmasters website to try and get contact information and there isn't any. I'm thinking this company was bought out and their customer service is probably terrible. If anyone can shed some light on that concern please do... I certainly don't want to have to dump $1600 to find out what would need to be done to make that clutch work in our cars. I'd like to get some specification drawings that display the different flanges and basket heights etc. For instance the center bore in the flywheel for the crankshaft, diameter and depth. As well as the bolt pattern for the crank etc. Not to mention overall clutch cover/basket height so we can see how much taller it is than our current push-type clutches (for TOB clearance concerns).



I'm in contact with someone from par-engineering regarding a custom straight-cut synchro mesh transmission. Cost will be approximately $5,350 Australian. Should be able to keep 5 speeds and pick custom ratios. I'm thinking of gearing it to hit 150 MPH in 4th and go for big overdrive in 5th for highway cruising at low RPM. The strange thing is that their website doesn't work at the moment: www.par-engineering.com



Good stuff, lets keep up the research!



UPDATE: I just spoke with someone at Clutchmasters and they can make a twin or triple disc setup for us. I explained the entire push-type conversion story and what Mitsubishi clutch works for us. Twin disc will hold 900hp/tq, triple disc would hold 1200hp/tq. I think we will be fine with the twin disc setup. I need to get him some measurements and numbers but it seems very realistic that this could happen within 1 month's time. Price point will be between $1400-1800 for the twin disc and add a few hundred on top for the triple disc (which may not be possible depending on available clearance from the TOB contact surface to the crankshaft flange).



I'm getting excited! Once I've got a reliable clutch and trans setup I can road race the car!

 

Sounds good to me on the gearing. Maybe if 2-3 of us can get together, price may drop a bit.





How about looking into the Eclipse turbo or EVO clutches? They hold up to 570tq, and may only require a retapping of holes in our flywheel. As long as the mating surface and outer diameter matches.



It's too bad there isn't a reference chart with flywheel measurements out there so we can compare for the closest match.







Thinking more...... If there is a twin disc clutch, like from an Eclipse, or anything really, that has the same depth so it doesn't over run our TOB, I bet I could use CAD to have a whole new flywheel made for use to bolt right up! And it could be made in whatever material we chose. Then, all you'd need to do is have a ring gear thrown on the outside.

 

I'm using an eclipse clutch with a push conversion in the Tib now. It's just a single plate. Not sure on the clearances for a dual clutch. I was very tempted to get one and try it. But financially it was out of my budget at the time. It's a competition clutch. I can get part numbers if you guys need them to reference anything. I thought they had an option for a twin discuss clutch when I was shopping.

 

You, like the rest of us, have 420A non-turbo Eclipse clutches. Those only rate as high as 420tq. We need something rated higher, which the turbo eclipse clutch does (570tq). Unfortunately, it's a different bolt pattern.

No one makes a twin disk kit for the 420A that I'm aware of.

 

Sounds interesting Jon. I still think having CM make the entire assembly will be the most reasonable and reliable route. The price is very similar to the kits that are already out there and readily available. I know the rep I was speaking to said he would already have all of the tiburon flywheel specifications, so all he needs is the clearance so they can see what they've got that might be close and work from there...



Keep in mind I have a custom made pressure plate from ACT, which increased the torque rating of my clutch to 485 ft/lb (from the standard 420), and at 31 PSI on E85 (approximately 500whp / 450tq) it started slipping in 5th gear (the only gear that would hold traction with my 215/45/16 Kumho Exsta MX tires. That is before the gear itself is destroyed. At that power level I broke 5th about every three pulls I made in that gear, which is why I need the transmission internals.



I'd rather go for the twin disc and 900 hp/tq capability. I'm slightly considering trying the triple plate depending on the cost difference. Then even if I get crazy with a larger twin scroll Garrett like the GTX3582 I'll still have a large safety net.



No additional response from PAR yet, I'm trying to figure out exactly what they want me to send them. I'll ask them about a possible discount if we can get a few members to commit.

 

Just a question, why do you need 500/600 hp in 5th?

 

For when the Ducatis be nippin' at yo six in top gear in da badlands!

 

Hahaha! No but seriously my long term plan has been to make this my track day car. And by that I mean road course tracks. Its not technically racing as you need to have what they call "point-by's" to pass, but you can still go as fast as you want on road course tracks throughout the country. Being in the northeast I have been to NJMP, Watkins Glen and Pocono Raceway. Most of these tracks have straights that are long enough to reach 140-150 MPH in a car that will run mid-12's at the dragstrip. So in the Tiburon I'll surely be in 5th on those straights.



I don't plan on intentionally doing 5th gear runs on the highway or anything like that.



I'm looking forward to turning some heads when I'm passing Porsches and Corvette's in my Hyundai this or next year. I still need to cage the car and get some wider wheels / tires (looking at 17x9's with an offset of +22 with 245 or 255 tires).