HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

Comments: 0

Latest topics
» Still pulling away like a freight train supercharged 944 LS1
Today at 6:48 am by Michael B.

» Drive by Wire Throttle Pedal Install on 1987 NA 944????
Yesterday at 7:40 pm by VA944LS1

» New convert under way
Yesterday at 2:47 pm by kevin924kevin

» New 944 widebody & aero
Thu Feb 22, 2018 5:56 pm by scryfst

» Unfinished 1987 turbo ls2 conversion
Thu Feb 22, 2018 11:23 am by Murrdog9000

» SBC Conversion - Front Suspension A-Arm Trouble
Wed Feb 21, 2018 6:41 pm by 962porsche

» What header is everyone using?
Tue Feb 20, 2018 10:58 pm by 948

» How to bleed LS1 w/ 951 radiator?
Tue Feb 20, 2018 12:51 pm by acorad

» Oil Pan question
Tue Feb 20, 2018 9:41 am by Rothaus

» 83' Porsche 944 LM7 Build
Mon Feb 19, 2018 1:39 pm by Jchard944

February 2018
MonTueWedThuFriSatSun
   1234
567891011
12131415161718
19202122232425
262728    

Calendar Calendar

Log in

I forgot my password


Clutch Disk Choices

Go down

Clutch Disk Choices

Post  erioshi on Wed Oct 07, 2015 10:36 am

I know that the standard answer here seems to be to use a SACHS BBD4163 (11", 1", 23 spline).  My concern was that it seemed a bit thin when compared to the LS clutch disk it is replacing.  Does anyone know at what power level it's time to move to something with a bit more beef?

I have been considering a Centerforce 384070 which looks to be a direct replacement.

Link: http://www.amazon.com/gp/product/compatibility-chart/B000CISMSM?ie=UTF8&i=225

My car will not have all that much power; probably between 350 - 400 whp when finished.  The power will also be put through a Fidanza aluminum flywheel, which should reduce the wear the clutch disk sees, as long as I'm not riding the clutch.  I already have the Sachs on hand, but if swapping now will significantly prolong the time between clutch replacements, I'd be very interested upgrading while the engine is still on the stand.  Thoughts?
avatar
erioshi

Posts : 225
Join date : 2014-06-16
Location : A land of ice and snow .. mostly

Back to top Go down

Re: Clutch Disk Choices

Post  docwyte on Thu Oct 08, 2015 7:52 am

I have the Spec Stage 2 along with their lightened flywheel. It's been pretty much bomb proof. I've run it with power levels from 340whp to 425whp and torque levels of 350 ft lbs to 410 ft lbs at the wheels. No slippage, no bad manners.

If you decide to run the flywheel you currently have, make sure you take it, along with whatever clutch disc and pressure plate you buy to a machine shop and have them balance them all together...

docwyte

Posts : 1375
Join date : 2010-07-18

Back to top Go down

Re: Clutch Disk Choices

Post  Arthropraxis on Thu Oct 08, 2015 10:09 pm

docwyte wrote:If you decide to run the flywheel you currently have, make sure you take it, along with whatever clutch disc and pressure plate you buy to a machine shop and have them balance them all together...
Take that advice. Make sure to get a disc made for the Porsche splines. I initially installed a Spec unit and the splines fit tighter than the Sachs unit that replaced it.
avatar
Arthropraxis

Posts : 1084
Join date : 2009-09-02

Back to top Go down

Re: Clutch Disk Choices

Post  erioshi on Thu Oct 08, 2015 11:29 pm

Thanks for the feedback. I guess I'll have to see what I can find out about the Centerforce disk. It lists as cross-compatible with the same applications as the Sachs we currently use.

I will have the flywheel and pressure plate balanced as a unit, and the clutch disk balanced by itself. I've done that with ever performance build I've done.
avatar
erioshi

Posts : 225
Join date : 2014-06-16
Location : A land of ice and snow .. mostly

Back to top Go down

Re: Clutch Disk Choices

Post  Techno Duck on Fri Oct 09, 2015 7:01 am

I am very happy with the Spec Stage 2 setup also. I am running the complete stage 2 package with the pressure plate and a lightened steel flywheel. Good throttle response and still very managable on the street. Pedal is firm with the right size master cylinder, not my first car of choice to get stuck in traffic in but its not a chore to drive. I went with the mid weight steel flywheel to keep some street manners. Too light is a PITA especially with a disc that grips hard.

Techno Duck

Posts : 447
Join date : 2010-12-01
Location : San Diego, CA

Back to top Go down

Re: Clutch Disk Choices

Post  Lemming on Fri Oct 09, 2015 7:26 am

Techno Duck wrote:Too light is a PITA especially with a disc that grips hard.

Tell me about it, I use the Spec Stage 3 six puck with lightened flywheel and pressure plate.  Good thing it's only used on track!
avatar
Lemming

Posts : 855
Join date : 2011-05-30
Location : B'ham

Back to top Go down

Re: Clutch Disk Choices

Post  docwyte on Fri Oct 09, 2015 1:57 pm

Get *everything* balanced together! That means flywheel, clutch and pressure plate...

docwyte

Posts : 1375
Join date : 2010-07-18

Back to top Go down

Re: Clutch Disk Choices

Post  erioshi on Sat Oct 10, 2015 11:03 am

Doc, yes, I know what "they" say, but you realize the flywheel and pressure plate have one permanent, consistent relationship with the spinning engine internals, and the clutch disk changes it's relationship to everything except the transmission input shaft every time you press the clutch pedal, right? The clutch disk needs to be neutral balanced by itself, and the flywheel pressure plate combo should be balanced together .. and ideally with the other spinning engine internals.
avatar
erioshi

Posts : 225
Join date : 2014-06-16
Location : A land of ice and snow .. mostly

Back to top Go down

Re: Clutch Disk Choices

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum