competition motor

[fg1227]

NOS type 911/57 serial#653248,I THINK IT'S A 2.5 LIT TWIN PLUG,WHAT DO YOU THINK

[hgo]

this is a 73 2.4 T with zenith carburetors (euro version of your CIS T)
regards
hgo

[tfiv]

7.5:1 130Hp

[fg1227]

twin plug 2.5 type 911/57;serial #653248;nos,

[Zithlord]

Tree different answers.

911/57; this is a 1972 euro 911T engine, range 6520001-6523284

653248; 1973 911T engine range 6530001-6533239 (911/59)

There is something strange with your numbers fg1227. The type number is 1972, the engine number is 1973. The enginenumber should have one more digit?

(I am no expert, just read it in the "redbook" )

Racing engines:

911/20 - 1970
911/21 - 1971-72
911/22 - 1971
911/70 - 1971
911/72 - 1972 RSR
911/73 - 1972

John

[nick-moss]

Interesting! Mail sent

[fg1227]

I haven't seen it yet ,it is with the list of spares from my 914/6 gt

quote"complete 2.5 lit. FIA GR6 short block engine case,crank,pump,and rods& piston set NOS,but not complete with ignition/carbs etc...
engine is a magnesium competition type 911/57 with #6532948"

[andyjboy]

911/57 was the Euro 2.4T (with Zenith carbs rather than mfi used in the US) manufactured in '72 & '73.

The engine number 6532948 ties in with the serial number range for this engine.

However, this could quite easily have been used as the basis for a 2.5 competition engine ...

[WDNoon]

7R case used in the build-up of a spare GR6 engine for FIA-sanctioned Euro events. The rules allow for a period legal engine (castings made no later than Dec. 73 and a displacement not to exceed 2.5-liters)

Accept for the case, the heads, internals, carbs, rods. oil-pump, crank etc... were all NOS spares with the 914/6GT. The engine case was chosen by Wayne Baker as the safest engine case to build up that would still comply with the current rules.

Cheers,

Bill

[John Straub]

Bill,

Could you explain "GR6 engine for FIA-sanctioned Euro events. The rules allow for a period legal engine (castings made no later than Dec. 73 and a displacement not to exceed 2.5-liters)". Are these the current FIA rules? You can use a 2.5L, rather than a 2.0L? And where can I find a copy of those rules?

Thanks,
John