Turbo vs NA Clutch

Tcrate · 09-28-2011, 06:06 PM

Can anyone confirm if the stock turbo clutch from the factory had the rubber insert or was it spring center? Thanks.

Ga 951 · 09-28-2011, 07:24 PM

turbo was the center spring type..I just replaced mine

Tcrate · 09-28-2011, 07:36 PM

Thanks. So there is a better chance of a turbo clutch lasting longer than a NA based on that. How many miles did you get out of your clutch?

zedsn · 09-29-2011, 03:16 AM

Turbo clutch disc and pressure plate diamiter is larger than a NA clutch and I would think everything else used to make the clutch setup is more heavy duty but the disc will wear out like a na clutch if abused too I would think. You would also have to use a turbo fork with a turbo setup and not the na fork as well as a turbo flywheel and turbo bellhousing. The ends don't seem to justify the need with a stock na 944 in my opinion.

kdjones2000 · kdjones2000's Garage

Just buy a spring-centered replacement disc for the NA. The rubber-centered one is NLA anyway. Go aftermarket or OEM, and you should be fine.

Ga 951 · 09-29-2011, 04:30 PM

+1
KD has it right. rubber center no longer avail, as far as I know.

johnkoawood · 10-03-2011, 06:23 AM

You can have a spring centered disk resurfaced as well..

South Bend Clutch - Dodge clutch kits and Kevlar Pilot Brgs. Dnya Max Clutch Kits for high performance.

They have an entire range of surfacing materials.. they also offer cryo treatment of other clutch system components such as the pressure plate...

wild man · 10-08-2011, 07:34 AM

Quote:

Originally Posted by Ga 951

+1

+2.............. Either that, or go after. (market)

Ga 951 · 10-08-2011, 07:53 PM

To answer your question, I replaced the clutch at 108K mi. My prob actually turned out to be a cracked clutch fork, the plate was about 50% worn. Just had to do it all while I was in there!

wild man · 10-09-2011, 05:48 AM

Quote:

Originally Posted by Ga 951

To answer your question, I replaced the clutch at 108K mi. My prob actually turned out to be a cracked clutch fork, the plate was about 50% worn. Just had to do it all while I was in there!

I assume that you meant that it was the DISC that was 50% worn. Hopefully you cleaned and heavily greased the fork pivot bearings so you don't break another one.

Ga 951 · 10-09-2011, 01:28 PM

had to buy a refurb fork (951 part NLA) it came with new bearings which I greased well with Moly lube. You are correct, the clutch disc was 50% worn.

wild man · 10-09-2011, 03:45 PM

Is the refurb fork beefed in any way over an oem fork?

Ga 951 · 10-09-2011, 06:09 PM

not to my knowledge. I was told they use a N/A clutch fork and machine off a small amount where the bearings mount. Evidently the fork shaft opening is a little wider for the 951. Although I didn't mic it out, it looked new and identical to the old one (minus the crack of course).

As an aside, what did you end up with on the turbo rebuild? K27 I assume? Mine is probly nearing the end of its service life @ 110k mi I expect

wild man · 10-10-2011, 06:26 AM

Yea, K27/8 with 3" exhaust and 3" intake from MAF to compressor inlet. But I still haven't installed the KEP2 pressure plate and 930 disc. I DO have some worries about breaking the fork with the KEP2, so I'd like to know what my options are for replacing the stock fork with a beefier one. If that option comes up dry, my last resort is to buy some "hard rod" welding rods, and perform the beefing procedure myself.

Ga 951 · 10-10-2011, 09:07 AM

I went with the sach's PP and the 930 disc. You may want to call the folks at 944 online, they may be able help. I am unaware of any beefed up forks, sorry. I don't remember the deal on the KEP2, seemed like I read some sort of neg feedback on either the KEP1 or 2.

wild man · 10-11-2011, 07:01 AM

The neg is on on the 2, with it's 1 ton+ clamping force being the blame for a fair # of broken forks. Apparently nobody seems to think it's worth the effort to sell beefed-up forks, let alone come up with an aftermarket one for this extremely small market.

nize · nize's Garage

there is only one place that makes a beefed up clutch fork, blaszak;
blaszak clutch fork photos

guru944 · guru944's Garage

To all.

944 Clutch disc & Flywheel friction surface

Na/S/S2 is 225mm Diameter
Turbo is 240mm Diam

Not Interchangable without Larger bell housing and proper flywheel trigger teeth.

Later

Turbo17 · 11-08-2011, 10:06 AM

Quote:

Originally Posted by Ga 951

To answer your question, I replaced the clutch at 108K mi. My prob actually turned out to be a cracked clutch fork, the plate was about 50% worn. Just had to do it all while I was in there!

I replaced my '86 951 at 165K. Mine probably had a bit of like, but less than 20%. My problem was a bad throwout bearing. It wouldn't turn - no noise, just felt like it was filled with peanut butter. It got replaced along with rear engine seal, clutch fork bearings, shaft, etc.