Alfa Romeo Forum - View Single Post - 2.4 JTD uprated gearbox enquiry

AlfaLincs · 30-06-2007

I suppose the people to ask are those who race 156 Diesels..but I'm not sure who they are.

Manufacturers tolerances are usually pretty fine..at this moment Alfa are trying to decide whether to use a twin turbo or V6 or a V8 in the 159 GTA, with one of the major considerations being that they are worried the transmission can't take the extra strain of the twin turbo in its current form

The weaknesse will almost certainly be the bearing sizes, and quite possibly the planet wheel shaft in the diff, which does snap from time to time. You really need to speak to a competition gearbox specialist..which means £££££.

Can't help more I'm afraid.

AlfaLincs

30-06-2007	#8 (Post Link)
AlfaLincs AO Silver Member Join Date: Jun 2005 Location: Boston Posts: 2,437 Member car: 156 SW 2.4JTD	Re: 2.4 JTD uprated gearbox enquiry - Kev I suppose the people to ask are those who race 156 Diesels..but I'm not sure who they are. Manufacturers tolerances are usually pretty fine..at this moment Alfa are trying to decide whether to use a twin turbo or V6 or a V8 in the 159 GTA, with one of the major considerations being that they are worried the transmission can't take the extra strain of the twin turbo in its current form The weaknesse will almost certainly be the bearing sizes, and quite possibly the planet wheel shaft in the diff, which does snap from time to time. You really need to speak to a competition gearbox specialist..which means £££££. Can't help more I'm afraid. AlfaLincs