Ok I don't speak tranny technitalk so someone help me out here plz.

To my understanding, the clutch splines are what help the clutch plate mate w/ the input shaft. Is that correct?

Now my understanding is different cars have clutch plates w/ different #s of splines, right? How many splines does the FD clutch plate utilize? Or does it vary even by clutch design?

So why am I asking? B/c the tranny I wanna run (yes you read that right) allows me to run any clutch/flywheel combo...as long as it is "18 spline Chrysler." I *really* wanted to use the Exedy D-core clutch, which is a floating single spline hub if I understand correctly.

So yea, I'm lost

Thanks!
~Ramy

 

yes, you are correct...as to the number of on an FD, I'll have to wait until I get home again to count.

different numbers, different diameters as well...

did you get my PM? I sent it writing your name by memory, and not sure if I got it right???

 

I'll check on the number of splines tomorrow for you if you want. I have a car apart right now to that point.

 

Ramy,

I would honestly call exedy and ask them if they can just put that spline on the clutch plate.

ACT can no problem to theirs....

bobby

 

Thanks guys. So I take it the number of splines used is a fixed number for each car, huh?

Sure did. I'll be replying to ya shortly

Hey Bobby. Thanks for the tip. I tried speaking w/ the engineer @ Exedy yesterday, but he's over at SEMA. So I'm gonna drop him an email and see what he says. The only screwy part about it is, even if it can be done, I wanted to buy the clutch directly from Japan, cuz it's MUCH cheaper that way haha. Not sure exactly how I'd explain the whole spline thing to 'em in J-land. That'll be quite challenging

~Ramy

 

Haha yeah, if they even make a 13spline input. For some reason i thought they were an american company...oh well

if you have the dough give tilton a call, they can do pretty much any clutch setup you want.

 

I don't know the number of splines or diameter off the top of my head but I know it's compatible with Ford parts. My clutch alignment tool is from Ford

 

According to a listing on summit for a centerforce DF clutch it is a 1 inch by 23 spline
http://store.summitracing.com/partde...700+4294907824

 

21 spline and about 20mm in diameter.

 

Ramy,

Aren't these 18 splines used in old Hemis? well either way I havent been in the rx7 loop - it must be for some cool tranny if you want it.

I spoke with one of our vendors and D-Core has not been made for any domestic. But of course that doesn't answer your question, our contact could not get me any info from Exedy (probably for the same reason that they were out in SEMA).

 

Now I am curious, Hollinger, Xtrac????

 

23 spline.

 

Nope, def. Japanese. Although they do have Exedy USA here...

Well I'm weary of using clutches that don't have a lot of real world feedback, regardless of the rep. Why? B/c it's not about the quality; my biggest concern is streetability. I do NOT want a jerky clutch. The D-core is being RAVED about b/c it's engagement is practically like stock, but it holds TONS of power.

You got me. But I know it's for domestics. The company makes hardcore race trannies for tons of domestics, hence the spline it comes w/. I asked about a custom spline, and he was like don't even bother. With the amount of orders we have, it'll take 2 years (seriously) to get a custom input shaft made. Wow.

Oh it is...

I really appreciate it Paul. I'm gonna drop him a line too, and we'll see who gets a response first To my knowledge, ACT has no prob changing the # of splines for you on whatever clutch kit you want to order.

Hollinger, while it prob has the greatest rep out there, is simply impractical - for this application. I've spoken w/ them and City Performance Centre downunder (the shop that does the retrofitting into the tranny case and bellhousing and adapter "kit" to make the tranny work w/ a rotary), and other than the fact that they have trouble replying to me after a few emails (I'm pretty much getting the cold shoulder from them now), the Hollinger requires a rebuild every 3,000 or so miles, and prob has to be done by them ONLY. Add to that the transport expenses to and fro downunder, and the fact that the box is like $10,000 PLUS a zillion modifications in order to fit it into an FD, and you're just looking at a total lack of practicality. At least the domestic boxes can be rebuilt for a realistic price locally, plus the one I'm looking at is tried and true up to 13,000 rpm on 3 and 4 rotor force induced methanol blown cars (FDs and otherwise) in Puerto Rico (not to mention a plethora of 1,000+ hp domestics in the US). So the short answer is re: the Hollinger, while it was appealing, no, it's not worth the trouble.

~Ramy

 

Hey Bobby... I got an email back from Exedy Global (Kevin Fujioka), and he said that they don't have an 18-tooth spline, and can't make one in a timely manner. So I emailed him back to see what kind of wait it could be IF they actually can make one. I doubt they'll be able to though.

Here's my question. Is it possible to replace the spline afterward? Ie is it something a machine shop could do? Or is it integrated into the clutch during manufacture, so once it's done, it's done?

Thanks
~Ramy

 

First it was Chevy, now Chrysler! Oy vey! What's next, saturn???

 

Well, Kevin Fujioka told me that they don't make custom applications, and even if they did, it would be a year's wait due to how backed up they are w/ current project development.

They do have 10 and 26 tooth spline applications, but not in the D-core (only in the twin cerametallic clutch), so Exedy's definitely out.

That's what I just did. Spoke w/ the engineer @ Tilton (Mike), and he said they can definitely do it, it's not a problem at all. But for the flywheel, I gotta see if Fidanza carries a flywheel for the Tilton clutch I need...otherwise it'll be quite a wait (3 months) for the flywheel. Not fun. So I'm hoping Fidanza says they do carry the flywheel.

Damn this is getting REAL expensive REAL quick. No one happens to have (or has access to) a wholesale/discount account w/ Tilton or Fidanza by any chance?!?!

~Ramy

EDIT: I'm an idiot; I have a wholesale account w/ Fidanza...but def. not Tilton =-/