Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 914 & 914-6 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Oct 2008
Location: Catalunya, Spain, Europe
Posts: 27
Garage
slipping clutch wit 3.0L motor and 901 gearbox

Hi,
after modifying my 914 to a 914-6 with a 3.0 SC (K-JET) motor my clutch starts to slip after only 2000 km driving.

I am using the original gearbox from the 914 (the so-called 901 type). Therefore I have cut off the ring gear from the flywheel of the 4-cylinder motor and bolted it onto the flywheel of the 3.0. No drilling was needed in the 3.0 flywheel. I also used the old pressure plate that belongs to the 901 gearbox, as it stilll looked in good shape. However, I renewed the clutch.

I suspect the surface of this clutch and pressure from the pressure plate is insufficient for the (180 HP) 3.0L motor. My question is if the Sachs SPORTS pressure plate (#88-3082-999-741-M410 from Pelicanparts) will be strong enough. Though this is quite an expensive pressure plate, it is still cheaper and lighter than converting a 915 gearbox.

Does anybody have a suggestion or specs of this pressure plate? Eventually, the original Sachs number is welcome as well.
Thanks very much,
Gerber van der Graaf
Old 08-03-2010, 07:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Oct 2001
Location: Gautier Ms
Posts: 1,581
Garage
Maybe you are not getting enough clamping force as a result of your modifcation. There is a max distance from the pressure plate mounting surface to the flywheel friction surface.
Off the top of my head I can't remember what it is. It's in the factory manual however.

If you need another sachs clutch disc I have a brand new one I won't be using. PM for a REALLY good price.
Old 08-03-2010, 08:25 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
SirAndy's Avatar
 
Join Date: Sep 2002
Location: Oakland, CA
Posts: 898
Quote:
Originally Posted by Joe Ricard View Post
Maybe you are not getting enough clamping force as a result of your modifcation.
I agree.

I went with a Stage-II clutch and pressure-plate package from KEP for my conversion. (See link below)
Porsche Pressure Plates

You'll need something that can handle the torque ...
Andy
__________________
>> 1970, 914-6, 3.6L (Conversion)
>> 1970, 914-6, #374 (Original)
>> 1975/73, 914 Limo (Custom)
Old 08-03-2010, 10:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Oct 2008
Location: Catalunya, Spain, Europe
Posts: 27
Garage
Thanks Andy, this might be a good solution. Gerber
Old 08-03-2010, 10:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
rfuerst911sc's Avatar
 
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 7,461
I also am using the KEP Stage II pressure plate and clutch disc with my 3.0 works fine. I think it's good for up to 275 ft. lbs. of torque but has a very easy clutch pedal feel.
__________________
2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser.
Old 08-03-2010, 03:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
canna change law physics
 
red-beard's Avatar
 
Join Date: Jul 2000
Location: Houston, Tejas
Posts: 38,380
Garage
I used the SACHS clutch with my 914-6 after the HP upgrades. It was well over 200 HP and worked fine.
__________________
James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
Old 08-09-2010, 09:12 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 

Tags
3.0 6-cyl motor , 901 gearbox , 914 , clutch , pressure plate


All times are GMT -8. The time now is 09:56 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.