901.110.308.0R Porsche Stacks

[VEphilipp]

Hi,

I have these stacks in the storage, but I can't find any information on what 911 these had been used.

Is there any intel around here?

[Rick Cabell]

Pictures would help.

[1QuickS]

2.0 911S manifolds

[VEphilipp]

[Rick Cabell]

So these would be 69 only, correct Paul?

[gled49]

69S were different from 70S. Top of stack is 46mm, 70 is 43 I believe. Bolt pattern at throttles are different too. Maybe someone can confirm differences.

[Rick Cabell]

Paul says 2.0S. So the only 2.0 S with MFI is 69. That was my thought.

[1QuickS]

I screwed up, I looked at last two characters and assumed these were for Webers, obviously I needed to check out part numer a bit more before posting my reply.

1970 and later stacks used 911 prefix in part number. 901 prefix is for 1969 year model.

911E stacks had 38mm inside diameter at the top with 35mm bottom diameter and 911S stacks had 45.7mm ID (as measured) at top and 38mm bottom ID.

My data does not have 901.110.308.0R part numbers for 1969 year model, only part numbers I have are 901.110.309.0R or 901.110.317.0R

Stud spacing is 66mm and 1970 and later spacing is 74mm.

[72targa]

Just to stir the pot, factory race stuff?

[VEphilipp]

I haven't been able to find any information on google to this part number. Usually all my questions can be answered there..

could it help to meassure them out? Diameters and all that stuff?