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The 951 number you refer to is different to the one on my factory Cup car so Porsche must have had multiple 951 bellhousing numbers!?
I know also that Porsche used 944 numbers for 951 bellhousings at some point but I am not sure if the 944 number on the housing in the pic is such 951 "944" housing number.
The 951 number you refer to is different to the one on my factory Cup car so Porsche must have had multiple 951 bellhousing numbers!?
I know also that Porsche used 944 numbers for 951 bellhousings at some point but I am not sure if the 944 number on the housing in the pic is such 951 "944" housing number.
I hope someone can shed more light on this.
The very first 951's used 951 116 043 00 (86) which has been superseded with the current p/n for 87+.
The very first 951's used 951 116 043 00 (86) which has been superseded with the current p/n for 87+.
Ok but it seems like Jims suggestion that the numbers on the housings dont match Pet numbers. So what I need is someone with the knowledge to intrepret the number on my housing to if it is for a 951 or a 944.
It's not "cup" specific, any 1989 944T built at the time or after your production number would have had that bell housing unless a revision is found to cause unforseen problems then the run could always revert back to a previous version.
All manufacturers do this.
In GM, it's not unusual to have a transmission part have design 1, 2 and 3 all within one model year.
It's not "cup" specific, any 1989 944T built at the time or after your production number would have had that bell housing unless a revision is found to cause unforseen problems then the run could always revert back to a previous version.
All manufacturers do this.
In GM, it's not unusual to have a transmission part have design 1, 2 and 3 all within one model year.
This is a random ebay find, 1989 944T -
T
Yes T I did not say it was Cup specific I just pointed to that the number on my Cups housing having a different number than suggested by others meaning Porsche opted for several numbers.
When I do as you did(search Ebay) I also get hits on the number I was asking about being a 951 housing even though it has a 944 number.
I just want to be sure because I know that if you mount a 944NA housing on a 951 you will destroy the starter.
There is no visual difference between the 951 and The 944 housings but there should be dimensional differences. I am just not sure how to tell and I do not have any to compare too.
Starter ring is different between the 2 so the starter position should differ a bit but how can I tell?
I am almost 100% certain 951:s had 944 numbers on the housings at some point but which numbers?
The knowledge is out there.
..I am almost 100% certain 951:s had 944 numbers on the housings at some point but which numbers? The knowledge is out there....
I just measured from the two points below on some spare bellhousings, top picture is turbo.
The turbo measures 4-3/8in and the na/s2 measures 4-1/8in. So the turbo bellhousing has the starter mounted approximately 1/4in away from the driveline center compared to the na/s2, it’s almost impossible to see by eye.
Also the starters are the same and the flywheels are the same diameter, it’s the pressure plate and ring gear that require the different housings as they are larger diameter.
Finally, the 951 housings has both 944 and 951 part numbers, both below were 944 and I have another with #951.
I just measured from the two points below on some spare bellhousings, top picture is turbo.
The turbo measures 4-3/8in and the na/s2 measures 4-1/8in. So the turbo bellhousing has the starter mounted approximately 1/4in away from the driveline center compared to the na/s2, it’s almost impossible to see by eye.
Also the starters are the same and the flywheels are the same diameter, it’s the pressure plate and ring gear that require the different housings as they are larger diameter.
Finally, the 951 housings has both 944 and 951 part numbers, both below were 944 and I have another with #951.
BIG Thanks! Now we can compare and get a result
I get 105mm between the center to center of these two holes (see pic)
Cant really see in your pics but does my measurement match your 951housing or the 944?
That confirm it. What numbers did you have on the 951 housing that had 944 numbers?
This also means that even if both NA and Turbo housings fit over each others clutches the starters wont function.
NA housing on 951 clutch/starter ring will bring the starter gear too close and the opposite with 951 housing on an NA clutch/starter ring.
09-18-2018, 08:09 AM
951 bellhousing confusion
