S/T documentation needed for FIA approval

[Zithlord]

I know there has been a lot of S/T treads lately, but here goes:

In order to have a 70/71 chassis S/T replica approved for FIA Historic with the 2.5 engine and not the 2.3 engine FIA needs to have documentation that proves the S/T was run with this engine configuration before 1972. I have heard that Kremer ran a 2.5 S/T setup already in 70/71. Can anyone confirm this and back it up with Wagonpass, factory/Kremer documentation or old magazine articles from the days?

Another friend is trying his contact with Kremer, but I think that trail is cold if they do not keep much of their old documentation?

Best and thanks
John

[C.Plavan]

The 2.5L ST's ran at Daytona in 72. You should be able to find that. Also at Le Mans.

[Zithlord]

Plavan, thanks but I need documentation that a S/T ran a 2.5 engine in 70/71. What I heard was that Kremer ran such an engine in this season, maybe towards the end.

John

[Zithlord]

Thanks a lot Raj! I will contact Matt and see if he has some info on this issue.

John

[GTS]

Hi John,
did you try to get the Porsche homologation sheets from 70, 71 and 72.Normally Porsche has everything documented and homologated that was in possible range.They are normally available through the national sport commisions.And with that Homologation sheet you just get the approval.

[Chuck Miller]

John,

I've looked through most of my reference and so far cannot come up with a 2.5 justification before '72.....

I think the next thing you should try is to contact MAHLE and see if they have an exact date when the 2.5 piston options were available... If they were around any time pre-'72 you know someone out there tried'm......

Cheers

[Flieger]

MAHLE made the 90mm Nickasil for the 917 full 5.0 liter engine by 1971, so someone like Piech or Singer at the factory or even the Kremers must have come up with some for the 911 shortly thereafter. The factory could see the direction the Sports Car World Championship was going- developing the 911 for more prominent racing was on the horizon, as was a desire for better street cars.

just my thoughts, no real authority here

[Flunder]

John:

Try this:

Please refer to Porshce 911 Red Book by Patrick Paternie, pp28-29 where the engine is clearly listed with all the Series C and D racing engines.

"Racing Engines (cont'd from p28)

Type 911/70 1971
86.7 millimeter bore x 70.4 millimeter stroke, 2492 cc"


I looked on the master engine chart shown in Excellence Was Expected and Karl Ludvigsen also shows a 1971 introduction date.

[group4 st]

Hi
See if Bo can help.he used to work for kremer
BoStrandell@aol.com