Flywheel Resurface

Post by **davidricardo86** » Mon Apr 09, 2007 6:42 am

I did a quick search through the CA and KA forums and i couldnt come up with a true answer. Heres my dilema.

I took the flywheel to the machinist and he was having problems determining if it should be cut all flat or with a step in it. I told him its going to need a step, he agreed! I called up Centerforce and asked them what kind of step he has to cut into it. The sales rep i talked to told me .004". I called the flywheel guy and he said that that didnt seem right. It was way too small. He would of expected like .020-.040". He called up Centerforce and he looked up other Nissans and he said that most are cut flat. He recommended i take out the flywheel thats in the KA and see what that has. I want to make sure i get it right because the flywheel that i have doesnt look like it could be resurfaced again after this. I already ordered the Centerforce DF clutch for the DOHC KA. Basically does it need to flat or have a step in it and if so, what size step? I need some help with this, i cant get this wrong!!!

Post by **page02wrx** » Mon Apr 09, 2007 10:17 am

I am getting mine resurfaced too so an answer to this question would be very helpful

Post by **bone_stock_240** » Mon Apr 09, 2007 10:23 am

When I got my flywheel resurfaced, it was done flat. This was for my KA

Post by **r34 gtr** » Mon Apr 09, 2007 11:38 am

i believe it depends on the clutch you get. mine was done flat but im using a metal clutch.

Post by **davidricardo86** » Mon Apr 09, 2007 2:45 pm

bone_stock_240 wrote:When I got my flywheel resurfaced, it was done flat. This was for my KA

Ok, thats what i like to hear. Any others?

r34 gtr wrote:i believe it depends on the clutch you get. mine was done flat but im using a metal clutch.

I have the Centerforce DF for a DOHC KA24DE. Thanks for the help though.

IIRC, C-rad or Chris on here is using the same clutch. I hope he can help me out. If anyone else has some experience with this id really appreciate the help!

Post by **r34 gtr** » Mon Apr 09, 2007 3:28 pm

ask centerforce! if anyone can tell you what way to need to resurface the flywheel itll be them.

Post by **float_6969** » Mon Apr 09, 2007 3:37 pm

I know that my SPEC didn't include anything that said it was supposed to be stepped, and since I had it done flat, the friction point is WAY up at the top of the pedal. It kinda sucks.

Almost all Nissan flywheels are stepped, so I would think it would need stepped.

Post by **davidricardo86** » Mon Apr 09, 2007 5:18 pm

r34 gtr wrote:ask centerforce! if anyone can tell you what way to need to resurface the flywheel itll be them.

I did. Ill try again.

float_6969 wrote:I know that my SPEC didn't include anything that said it was supposed to be stepped, and since I had it done flat, the friction point is WAY up at the top of the pedal. It kinda sucks.

Almost all Nissan flywheels are stepped, so I would think it would need stepped.

I just got the clutch this morning and it doesnt say anything about putting a step in or what size. What other Nissans do you know that have this type of setup? How about your dohc KA's setup? i keep hearing things from both sides of the story.

When the step is put in, is the clutch disc friction surface higher than the pressure plate surface? Or is the disc surface lower than the pressure plate mounting surface?

Post by **float_6969** » Mon Apr 09, 2007 7:00 pm

poor side demo of flywheel;____-----___----_____The contact area is raised above the pressure plate "bolt down" area

Post by **davidricardo86** » Mon Apr 09, 2007 7:58 pm

float_6969 wrote:poor side demo of flywheel;____-----___----_____The contact area is raised above the pressure plate "bolt down" area

I see!

Post by **boost_boy** » Tue Apr 10, 2007 9:31 am

Having it stepped is the way to go!

Dee

Post by **page02wrx** » Tue Apr 10, 2007 9:51 am

boost_boy wrote:Having it stepped is the way to go!

Dee

What should the step be if I buy the Enjuku Stage3 clutch for the ca18det?

Post by **page02wrx** » Tue Apr 10, 2007 5:15 pm

Does anybody know the answer to that? I'm emailing Enjuku I hope they speak english

Post by **boost_boy** » Tue Apr 10, 2007 5:17 pm

page02wrx wrote:Does anybody know the answer to that? I'm emailing Enjuku I hope they speak english

They will know what to do with your flywheel!

Dee

Post by **float_6969** » Tue Apr 10, 2007 6:36 pm

LOL, Enjuku speaks English just fine. That is where I got my SPEC Stage III from and I love it. It's a great clutch and I'll definitely but another if when this one gives up on me.

I've looked all over, and I can't find the actual step distance, but I would think if you called SPEC they could tell you. I know for a fact it needs stepped though as I didn't step mine and the friction point is way up at the top of the pedal throw.

Post by **r34 gtr** » Tue Apr 10, 2007 6:40 pm

you can always adjust the pedal mang.

Post by **float_6969** » Tue Apr 10, 2007 6:42 pm

Don't you think I would have tried that? I'm not from the south, remember?

Even if you adjust it out to the max, it's still not right. The flywheel needs stepped, end of story.

If you do get a distance, please let us know what it is so I can sticky it.

Post by **r34 gtr** » Tue Apr 10, 2007 6:44 pm

crazy non-brutal clutches. i like my on/off action.

Post by **float_6969** » Tue Apr 10, 2007 6:47 pm

Mine's on/off, it's just got a very nice, light, pedal feel.

Post by **r34 gtr** » Tue Apr 10, 2007 6:54 pm

I was sittin at the television feelin disturbed. hey yo, i just got the word off Tigram and 83rd. some cat that got clapped. gangsta rapper? perhaps, but i was lookin at the face of one particular cat. now i done seen him before. can you remember where at? well it was either at the liqour store or the laundromat...

Post by **davidricardo86** » Wed Apr 11, 2007 9:14 am

float_6969 wrote:Don't you think I would have tried that? I'm not from the south, remember?

Even if you adjust it out to the max, it's still not right. The flywheel needs stepped, end of story.

If you do get a distance, please let us know what it is so I can sticky it.

Im still trying to find the actual spec. If anyone gets it do post it up!

Post by **page02wrx** » Wed Apr 11, 2007 1:29 pm

So I talked to Jason, from Enjuku, via Email. I asked him about stepping the clutch on their stage3 clutch I bought, and the difference between 4 and 6 puck.... and this was his response

Jason @ Enjuku wrote:
Broc, Its just the preferred clutch for the CA. The flywheel should be stepped just like oem would be. The pedal feel vs 4 and 6 puck isnt that big of a difference. Pedal feel is the same. If you have any other questions feel free to email us anytime. Thanks Jason

So basically, what does the stock flywheel get stepped to?

Post by **boost_boy** » Wed Apr 11, 2007 2:39 pm

page02wrx wrote:So I talked to Jason, from Enjuku, via Email. I asked him about stepping the clutch on their stage3 clutch I bought, and the difference between 4 and 6 puck.... and this was his response

So basically, what does the stock flywheel get stepped to?

It just the way the flywheel is cut to accomodate the disc. If the factory intended for the clutch to ride on a stepped flywheel, then the person machining the flywheel will know to step it (Having the friction surface a step higher than the rest of the flywheel). Or you can just have it flattened out and go with it that way. It sounds about right, but I could be wrong.

Dee

Post by **float_6969** » Wed Apr 11, 2007 2:43 pm

The question that isn't getting answered is, "How much higher should the friction surface be than the rest of the flywheel?".

Post by **Bwana** » Wed Apr 11, 2007 3:30 pm

I just got mine done for the KA today, I'll go out and measure the step. I'd imagine that it's the same distance for the CA.

Post by **Bwana** » Wed Apr 11, 2007 4:11 pm

Ok, just went out and checked it with a magnetic base dial indicator, so it should be pretty accurate. The difference was .004 in. Not much really, not sure how much difference that's gonna make, but there ya go.

Post by **davidricardo86** » Wed Apr 11, 2007 5:49 pm

Ok i think we got this figured out! I called Centerforce today and finally got a hold of one of their techs and i asked him the magic question, "Do you have to cut the flywheel flat or with a step and if so what size step?!" Well this is what he told me. There is a step and the size of that step is to be 0.004", exactly what Bwana measured on his freshly cut KA flywheel! Thanks for confriming that Bwana! He said that this is a "factory spec" and that its not Centerforce's spec or requirement. 0.004" is almost nothing! Its practically paper thin and he said id be fine without it, nothing would be damaged or harmed! It would actually be a hassle or just extra work for the machinist to but this little step, although if you want to have the step put in, do so as its not going to really matter. Remember this is for a KA and should work on a CA without any problems. Im sure others have already done this but ill let everyone know how it goes as im putting a Centerforce DF for a KA24DE onto a CA18DE(T) with a 11lb lightweight flywheel.

In conclusion, the original flywheel step is 0.004" or you can have it machined flat, either one should work without any problems on a stock or aftermarket flywheel.

Post by **Bwana** » Wed Apr 11, 2007 5:51 pm

Post by **float_6969** » Wed Apr 11, 2007 6:26 pm

Well I can tell you for a fact that if you machine the flywheel flat and use the SPEC clutch, the friction point is going to be all screwy.

I've got that Tomei flywheel I could go measure it tomorrow and see how it comes out as well.

Jon (guy that owns Forced Fab) says that he steps all of his Nissan flywheels, but I can't remember what he says he steps them to.

Website · Post by **DrIft Ready** » Wed Apr 11, 2007 9:05 pm

float_6969 wrote:I know that my SPEC didn't include anything that said it was supposed to be stepped, and since I had it done flat, the friction point is WAY up at the top of the pedal. It kinda sucks.

Almost all Nissan flywheels are stepped, so I would think it would need stepped.

same with mine.. got it flat and cheages the feel of the petel..my nismo was steped

Flywheel Resurface

Flywheel Resurface

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