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215mm pressure plate types?

Can any of you gents enlighten be on the difference between the bus,914 and 911 Saches 215mm or are they the same,can't seem to read or find numbers to assist my searth.
Present owner of the car suggests the 74/75 MY bus one will fit the 914/6 flywheel I have which appears to be the same as later 1969 MY 2.2t 911??
Thanks in advance.
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1985 944 2.7 motor,1989 VW Corrado 16v,57 project plastic speedster t4 power,1992 mk3 Golf,2005 a4 b7 qt avant 3.0 tdi,1987 mk2 Golf GTI,1973 914,2.2t to go in.
Past cars, 17 aircooled VW's and lots of BMW's
KP 13/3/1959-21/11/2014 RIP my best friend.

Last edited by porschetub; 05-17-2014 at 12:44 AM.. Reason: information
Old 05-16-2014, 02:31 PM
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914 and 2 liter 911 clutches are the same. At one time the 914 had a different disc (4 springs vs. 6), but they interchange. Same release bearing. A bus pressure plate (or "cover") is different, and uses a different release bearing in a different bell housing. It also lacks provision for the dowel pins that locate it on the flywheel. The bus flywheel 'may' be cut differently, as the ring gear step is used to center the cover in lieu of the missing pins. The bus cover won't work with a 914/911 setup because of differences in the configuration of the fingers of the spring, which will not accept the flatter bus release bearing design. At least one bus disc will work with the 911/914 pressure plate, and in fact it's offered as a lower cost option by some popular suppliers. The 2.2 engine, which made its debut in the 1970 MY, uses a "flat" unstepped flywheel and a completely different clutch assembly, utilizing a release bearing that is pulled toward the transmission, not pushed toward the flywheel. Any engine up to the 2.7L can be retrofitted with the 2 liter flywheel and used in conjunction with the 901 transmission and clutch. As the crankshaft bolt pattern is clocked differently on the 2.4 and 2.7 engines, the flywheel TDC mark will be in the wrong place when backdating the flywheel.

The Cap'n
Old 05-17-2014, 12:56 PM
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Did find some info after posting but you have filled all the gaps in with your detailed reply ,thank you sir.
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1985 944 2.7 motor,1989 VW Corrado 16v,57 project plastic speedster t4 power,1992 mk3 Golf,2005 a4 b7 qt avant 3.0 tdi,1987 mk2 Golf GTI,1973 914,2.2t to go in.
Past cars, 17 aircooled VW's and lots of BMW's
KP 13/3/1959-21/11/2014 RIP my best friend.
Old 05-17-2014, 01:47 PM
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Thats great information…..The cap'n, thanks mark
Old 05-20-2014, 08:55 AM
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Cap'n.... How do U know,..all this info on these car's ??? FM
Old 05-20-2014, 04:58 PM
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Haven driven VWs and Poesches since 1960, and working on them professionally for 41 years has resulted in a brain full of occasionally useful information. Sometimes, however, it's just "stuff", and not useful for anything but interjecting into otherwise boring conversations .................

The Cap'n
Old 05-20-2014, 05:32 PM
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Quote:
Originally Posted by The cap'n View Post
Haven driven VWs and Poesches since 1960, and working on them professionally for 41 years has resulted in a brain full of occasionally useful information. Sometimes, however, it's just "stuff", and not useful for anything but interjecting into otherwise boring conversations .................

The Cap'n
No don't say that its all good,some people say "oh thats easy" ..its only easy if you have done it before .
Yes Cap'n your were correct its all about the offset of the flywheel and the relationship of the various 215mm p/plates,good info thanks a lot,by the way I would be hardly described as young myself .
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1985 944 2.7 motor,1989 VW Corrado 16v,57 project plastic speedster t4 power,1992 mk3 Golf,2005 a4 b7 qt avant 3.0 tdi,1987 mk2 Golf GTI,1973 914,2.2t to go in.
Past cars, 17 aircooled VW's and lots of BMW's
KP 13/3/1959-21/11/2014 RIP my best friend.
Old 05-20-2014, 10:51 PM
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just a quick note, there is also a very rare 911 S 215mm pressure plate, and itīs much lighter than normal 914 and bus pressure plate, normaly seens with cooper friction surface, if you are Lucky to find one, itīs normally Worth big $$$$$
Old 06-10-2014, 03:43 AM
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The "S" pressure plate is meant to be used in conjunction with a copper faced "S" flywheel.

The Cap'n
Old 06-10-2014, 07:56 AM
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Quote:
Originally Posted by The cap'n View Post
The "S" pressure plate is meant to be used in conjunction with a copper faced "S" flywheel.

The Cap'n
Yep found that out myself,no need for the p/plate in my application,just need to find one that won't kill me on price and shipping cost.
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1985 944 2.7 motor,1989 VW Corrado 16v,57 project plastic speedster t4 power,1992 mk3 Golf,2005 a4 b7 qt avant 3.0 tdi,1987 mk2 Golf GTI,1973 914,2.2t to go in.
Past cars, 17 aircooled VW's and lots of BMW's
KP 13/3/1959-21/11/2014 RIP my best friend.
Old 06-11-2014, 02:06 AM
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There are two 911S clutch/flywheel combos. The 1967 911S used a copper faced flywheel with a copper faced steel pressure plate and a standard friction disc. I think this was used for just one year or less since the copper facing wore quickly and caused problems. In 1969, the 911S used a steel faced aluminum pressure plate with a thin friction disc, and a standard flywheel. The 69S parts (PP & FD) must always be used as a pair. As the stock on these items is rapidly drying up, the prices are getting very high.
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Old 06-21-2014, 05:46 AM
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Aluminum S PP on lightened 914 flywheel

I had my stock 914, (72) flywheel lightened to about 12 pounds and found an S pressureplate. I used this with a 3 puck sintered disc that was sprung but it was a bit grabby, so I went with a standard disc, (with the waverly springs between the friction surfaces. and it worked well, except for seizing some winters.

Also had 103 forged pistons, carillo 2.0 rods and a Berg stroked counterweighted crank, fed with 44 ida webbers and a Mazda front cooler, flares, s ft brakes, 914-6 rears and drilled,vented rotors.

Lightness sure makes for a lively engine :-)
chris

holly cow, that was 30 years ago!!!
Old 06-30-2014, 05:54 PM
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Quote:
Originally Posted by chrismorse View Post
I had my stock 914, (72) flywheel lightened to about 12 pounds and found an S pressureplate. I used this with a 3 puck sintered disc that was sprung but it was a bit grabby, so I went with a standard disc, (with the waverly springs between the friction surfaces. and it worked well, except for seizing some winters.

Also had 103 forged pistons, carillo 2.0 rods and a Berg stroked counterweighted crank, fed with 44 ida webbers and a Mazda front cooler, flares, s ft brakes, 914-6 rears and drilled,vented rotors.

Lightness sure makes for a lively engine :-)
chris

holly cow, that was 30 years ago!!!
I'am thinking that would have been a fun car with that motor,due to an amazing guy on theSamba I have secured a NOS german Saches pressure plate for a very fair price,very happy camper and thanks to all for the help,Pelicans great
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1985 944 2.7 motor,1989 VW Corrado 16v,57 project plastic speedster t4 power,1992 mk3 Golf,2005 a4 b7 qt avant 3.0 tdi,1987 mk2 Golf GTI,1973 914,2.2t to go in.
Past cars, 17 aircooled VW's and lots of BMW's
KP 13/3/1959-21/11/2014 RIP my best friend.
Old 07-11-2014, 10:40 PM
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Thumbs up S clutch & PP

excellent thread!

Quote:
Originally Posted by djpateman View Post
There are two 911S clutch/flywheel combos. The 1967 911S used a copper faced flywheel with a copper faced steel pressure plate and a standard friction disc. In 1969, the 911S used a steel faced aluminum pressure plate with a thin friction disc, and a standard flywheel.
- my GT came from Germany with that copper combo - well worn

I went to the steel faced S version and used it with an S disc in the street years, but that did not stand up to hard racing so then I went to a KEP stage 3 disc from GPR when i was racing - it worked fine - i again went back to the S disc for street use

these PP's were a lot "stiffer" to push, and back-in-the-day there were some reports of folks tearing out the firewall on 914's using them - I never had a problem, but maybe Dworazik had reinforced that area when the car was built ??

- now available FS since it can't be used on my 3.2

how bad do y'all want one?

.





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Old 07-20-2014, 06:23 PM
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