2.5 L Race Photo

[126coupe]

Well its ready to go in,
Too bad 2 more weeks before the Fab guy
can take the car. Crap, missing 2 races

[Fishcop]

Mmmmm, pretty!

[126coupe]

Thanks Mate

[Jim Richards]

Wow! Did you swiss cheese that crossbar for the motor mounts or does someone sell it that way?

[126coupe]

Fab guy did it. No big deal but we went a little
lite and it twisted a little. put in a gusset and
AOK

[Fishcop]

Minkoff, where did you get the blanking plate for the L side fan? Been chasing a source for a while.

[126coupe]

Porsche Only part. I got it from Andial

[TimT]

Here in the states heater block offs are available from a number of sources.....

[Fishcop]

Thanks Tim.... who?

[TimT]

To be PC check pelican,

but I know for a fact that they are available from

GT racing

I think smart racing sells them

The price is kinda ridiculous though about $250 USD for a pair

[Fishcop]

Thanks Tim, I did check Pelican but got no result. But "Yowza" they are expensive!

Cheers

[bumble]

That looks cool - what are it's specs and how much power do you expect to get?

Mark
'70 914/6 2.7
'89 S4

[126coupe]

2.5 L short stroke, Carillos, Boatailed and polishes case(alum) Mahle P and C(Nickasil), Knifed Crank, Carrera Pump, All sprockets lightened, 10.2:1 compression 911 S Sportcam (webb Cam) EBS valve springs, Titanium Retainers, PMO Carbs 46MM, Dual Fuelpumps, 20 Quart oiling system. Hopefully 210 -230 HP to the rear wheels. The car will weigh 1850-1900 pounds.

[bumble]

Should be a rocket .

I'm in the early stages of building something similar. Several isiues/questions...

1. I don't see any pressure feeds to the chain tensioners??? or am I going blind?

2. 46mm PMOs? All my calculations indicate 40mm with 36mm venturis to be about on the money. How did you decide on 46mm? - just curious.

3. Where did you get 89mm P&Cs?

4. Such a mild cam?

5. Single plug heads? At 10.2:1, I would have thought twin plugs might be a benefit?

Minkoff, I'm not questioning your build, just curiious as to how you came up with the particular mix of components as I'm in the decision phase myself.

Mark

914/6 2.7
'89 S4

[126coupe]

I have had good luck w mechanical tensioners, my German engineer suggested 46MM Carbs, 120/104 cam grind good power band for the tracks I run. 89MM Mahles from Andial bought them 3 years ago. Twin plug will be the next upgrade when I refreshen, but w my crane Hi 6 ignition I get great combustion. 906 CAM...NO power band too high I like my engines to last. Ive run this race car for 5 years, already proven success. Im just moving from a 2.2 to a 2.5 cause my class allows it