Crankshaft
Crankshaft
Author
Discussion

evox

Original Poster:

18 posts

226 months

Saturday 2nd February 2008
quotequote all
Hi

Does anyone know the sizes of the larger and smaller big end diameters on both types of crank are the mains the same diameter (tvr 4 litre serp engine 1995 non cross bolted).

Hope that makes sense

Mel.

AntonyJ

5,254 posts

311 months

Saturday 2nd February 2008
quotequote all
Errr not sure if this is what you are asking, but I think the earlier cranks are 2.3" and the later are 2.5".

CRE

168 posts

251 months

Saturday 2nd February 2008
quotequote all
AntonyJ said:
Errr not sure if this is what you are asking, but I think the earlier cranks are 2.3" and the later are 2.5".
The main journals are 2.300" (early) and 2.500" (late), but the big end journals are 2.000" (early) and 2.300" (late).

HTH

Jamie

spend

12,581 posts

281 months

Saturday 2nd February 2008
quotequote all
Isn't there a funny crossover in one of the early 3.9 serp engines, or is that just something like small mains/ends with a longer nose?

Dave