teveo,
Good searching, you found a good thread on this subject.
“
Whereas my 1967 902/1 has more or less this setup.”
Yes, your ’67 should be close.
This image is for ’68-’69.
The only differences are to the arm where the position of the retainer is different and
in ’68 the bearing is updated to a ‘constant-contact’ type with the addition of the two
black plastic spacers (#9 above).
You will probably only find this release (TO) bearing available and it needs the two spacers.
You seem to have a 215 mm clutch/flywheel assembly (red arrow).
What is the thickness of the flywheel washer (green arrow)?
Make sure it is correct for the 215 mm flywheel. Same with the new XZN bolts.
I also see an 80/83 mm fan pulley half (violet arrow).
Do you have the matching 245 mm fan?
That combined with your existing crank pulley and a unique belt will improve the engine cooling.
This will be important unless you install a front cooler on the 912.
Per your “
We are striving for a complete non-matching numbers car here.... ”
Your 902/1 238130 casting date 10/67 may (or may not) still have the non-reinforced input shaft.
You need to measure the thread diameter at the castle nut (12 mm = non-reinforced, 14 mm = reinforced).
The good news is that this transmission has the ‘regular’ differential.
There is no ‘simplified differential’ issue.
Your ‘no-number’ aluminum engine (below) has the temperature sender from the ’71 (120-300F).
What are the Porsche and VDO numbers on that sender?
You will want to change to the ’65-’68 (140-280F) version.
You said the engine has 2.2S P&Cs, hopefully it has 2.2 heads and not modified 2.0 heads (head gaskets are dramatically different).
The 2.2 and later heads are a ‘shallower’ design and better power at higher compression.
What are the numbers and casting dates on the heads?
I see an 11-bolt cam housing.
I notice a fuel flow diagram in use.
Here is a useful link:
Braided Fuel Hose for a 72T MFI
Search on "circulating fuel" for more.
You will want a circulating fuel system with the pump (and more?) mounted on the front suspension cross member.
Please, more images.
Best,
Grady