[boose330]

Hi guys so my clutch recently started slipping under load mainly on freeway, i have about 123k on her (2012 pro4x).. soo i obviously want something a little stronger clutch wise, so i decided to go with the centerforce II that being said the disc diameter is 10.4"/ 264mm. Now i wanted to also go with a new flywheel as well since im in there and the luk one from summit states that the flywheel for that truck which ive seen alot of people matching on here has a disc surface diameter of 9.813" now my question is will that work? Or do i need a bigger mating surface flywheel?! As much as ive searched i havnt seen any topic covering the diameters and such.. and good advice is appreciated! Mods [Leveling kit/33's]
Thanks, Lou

 

[CT_Nismo]

The standard flywheel for the Frontier is the Luk dual mass. You can buy it at Rock Auto. Others have not used the DMF and have used a monolithic design. Wait for other posts to see if the coverage is important.

 

[Nissan4Life]

Interesting that the 2 disk are different sizes. Of the clutches I have worked on (3) the replacement, even upgraded, disk are the same diameter. What does Center force say about this? Do you have the disk and new fly wheel on hand. Can you post a picture and report back your findings. I am at 115K on my clutch and feel that it could go any time (based on others reports).

Also you were able to keep your mud flaps with 33s'. Did you trim a bunch on the inside of the flaps?

 

[boose330]

Interesting that the 2 disk are different sizes. Of the clutches I have worked on (3) the replacement, even upgraded, disk are the same diameter. What does Center force say about this? Do you have the disk and new fly wheel on hand. Can you post a picture and report back your findings. I am at 115K on my clutch and feel that it could go any time (based on others reports).

Also you were able to keep your mud flaps with 33s'. Did you trim a bunch on the inside of the flaps?

No they are on backorder currently.. from what summit researched for me i had to get the perfection clutch flywheel with a bigger surface area also dual mass but twice the cost almost as a Luk! And as far as the mudflaps i melted them with a heat gun, the plastic is really maleable once heated. Had a tiny rub on sharp turns but that subsided. 👍🏼the tires def did put extra strain on the clutch id say, i have a 14' aluminum boat i pulled last year, soo id imagine they both did it in lol.. my opinion is that the clutch was weak under duress from factory even with no mods ive had it slip a few times.

 

[boose330]

Flywheel is on backorder for a month just ma8nly curious as from what i read on here people have used the Luk and centerforce II... just would have been nice to get it sooner but mainly save the extra $400

 

[boose330]

The standard flywheel for the Frontier is the Luk dual mass. You can buy it at Rock Auto. Others have not used the DMF and have used a monolithic design. Wait for other posts to see if the coverage is important.

Ya i was aware of it being dual mass but the clutch kit i ordered has a bigger disc than the Luk i was just confused as to how that would work unless people just didnt get full potential out of their new clutch... being almost a half inch or so of unused mating space?!

 

[BLtheP]

When I look at the LUK DMF098 it says the flywheel diameter in inches is 10.63”. Surely that would be the clutch disc diameter because no flywheel on a truck is that small. My guess is summit had it listed wrong. Perfection clutch and luk are both following OE designs (LUK is OE) so either should work fine.

 

[Total nutcase]

I went with a clutch from JWT. I can’t remember if the friction disc outside diameter was larger, but I do know that it was wider so it did have more surface contact with the flywheel and did work good with the factory flywheel

 

[shift_RUSH]

I went with a clutch from JWT. I can’t remember if the friction disc outside diameter was larger, but I do know that it was wider so it did have more surface contact with the flywheel and did work good with the factory flywheel

How many miles on your JWT? Are you saying you did not replace the factory installed flywheel when replacing your clutch?

 

[boose330]

When I look at the LUK DMF098 it says the flywheel diameter in inches is 10.63”. Surely that would be the clutch disc diameter because no flywheel on a truck is that small. My guess is summit had it listed wrong. Perfection clutch and luk are both following OE designs (LUK is OE) so either should work fine.

Yes thank you soo much for the info! I def confirmed that to be true and got the Luk, which I wanted from the beginning... Def they have their info wrong on Summit! Saved me $350! Well wish me luck "no pun intended" lol I'll be posting pics during the job in a month or soo. Hopefully the old gal will get me through winter!

 

[Total nutcase]

How many miles on your JWT? Are you saying you did not replace the factory installed flywheel when replacing your clutch?

Yeah I replaced the flywheel with an OEM. I don’t ever reuse them them. I think I put 15kish miles on that one before I sold it and got a Pro4x.

 

[boose330]

I went with a clutch from JWT. I can’t remember if the friction disc outside diameter was larger, but I do know that it was wider so it did have more surface contact with the flywheel and did work good with the factory flywheel

Following.. how many miles were on the truck when you changed it? Factory mods?The flywheel looked to be in perfect condition? Or did you clean it like with fine sandpaper? I'm unaware of how my flywheel is but id rather have it prepared for when I have it all down if needed.. my main issue is rpm rev on freeway mainly 6 gear when excelerating.

 

[Total nutcase]

Following.. how many miles were on the truck when you changed it? Factory mods?The flywheel looked to be in perfect condition? Or did you clean it like with fine sandpaper? I'm unaware of how my flywheel is but id rather have it prepared for when I have it all down if needed.. my main issue is rpm rev on freeway mainly 6 gear when excelerating.

That truck I think had 130ish when I changed it. Never reuse a flywheel. Even if it can be resurfaced, that removes material making it thinner gives more room between it and the pressure plate. That makes it grab less hard

 

[BLtheP]

Yeah I replaced the flywheel with an OEM. I don’t ever reuse them them. I think I put 15kish miles on that one before I sold it and got a Pro4x.

Huh, never heard of anyone doing it that way, that’s backwards from everything I’ve seen. Not saying it was wrong, just interesting and a different perspective. Seems like everyone going the JWT route either does their flywheel and maybe their clutch, or their flywheel and a stock clutch. Never seen it the other way around.

The higher surface area of JWT clutch is intriguing. Our clutch is pretty small. I would not mind seeing more surface area on the disc. The stock flywheel I don’t really have a problem with and am scared to change from it and induce a bunch of unwanted noise or poor clutch feel from deviating from the stock design.

Didn’t you delete the clutch orifice too? How was that?

 

[Total nutcase]

Huh, never heard of anyone doing it that way, that’s backwards from everything I’ve seen. Not saying it was wrong, just interesting and a different perspective. Seems like everyone going the JWT route either does their flywheel and maybe their clutch, or their flywheel and a stock clutch. Never seen it the other way around.

The higher surface area of JWT clutch is intriguing. Our clutch is pretty small. I would not mind seeing more surface area on the disc. The stock flywheel I don’t really have a problem with and am scared to change from it and induce a bunch of unwanted noise or poor clutch feel from deviating from the stock design.

Didn’t you delete the clutch orifice too? How was that?

I’m a little confused. I used a new factory flywheel. JMT has a version that works with the OEM flywheel

 

[BLtheP]

I’m a little confused. I used a new factory flywheel. JMT has a version that works with the OEM flywheel

Right. Most people buying from JWT are buying the single mass flywheel so they can get away from the dual mass. Haven’t seen anyone only buy a clutch from them and use it on an OE flywheel before.

 

[Total nutcase]

Right. Most people buying from JWT are buying the single mass flywheel so they can get away from the dual mass. Haven’t seen anyone only buy a clutch from them and use it on an OE flywheel before.

Oh I see what you’re saying. Yeah at that time I didn’t have any experience with single mass, so I didn’t go that route. Was debating it some with my current pro4x. But now I put one in my Mini Cooper and absolutely love it for sporty driving! But the noise they can make is quite loud. I’m just not sure I want that noise in my truck. I kinda like it being the relaxed, quiet, comfortable, laid back cruiser. Plus, I’m told the heavier setup is better for offroading

 

[BLtheP]

Oh I see what you’re saying. Yeah at that time I didn’t have any experience with single mass, so I didn’t go that route. Was debating it some with my current pro4x. But now I put one in my Mini Cooper and absolutely love it for sporty driving! But the noise they can make is quite loud. I’m just not sure I want that noise in my truck. I kinda like it being the relaxed, quiet, comfortable, laid back cruiser. Plus, I’m told the heavier setup is better for offroading

Gotcha, that makes sense. Yeah honestly I don’t want a lighter flywheel at all. You get better torque from a heavy flywheel. Jeepers add “high inertia” (aka heavier) flywheels a lot for better offroad. The only downside to a heavier one is if you drive it hard and rev it out, they are slower to spin down to the right rpm for the next gear since the momentum of the heavier flywheel keeps it rolling a bit longer. So honestly your previous setup sounds intriguing. Improving the clutch but keeping the FW stock.

 

[shift_RUSH]

Pretty sure there aren't too many 'happy endings' when it comes to SMFWs & satisfaction/longevity.
As many clutch replacement threads as I've come across here at CF, I'm ~95% sure* I'll just go w/ factory quality replacements when the time comes. The DMFW covers up the NVH issues that seem to show themselves when going outside the lines via SM aftermarket replacements/puck/etc...

*But, of course, there's that sneaky ~5% that always wants to try something more performance-oriented, so.......👺🤙

 

[Total nutcase]

I really liked the feel of that clutch. Was a little too light so I put a light spring on the pedal. That made it awesome! It put the tension just right and took up the pedal play at the top end. And of course I had the rod adjusted to