Quote:
Quote:
and I am especially surprised that triumph props have the same pcd as ford. NOBODY has ever mentioned that before.
You need to tread carefully here Clive.
Ford UK changed from imperial to metric in the early seventies (during the production of the mark 3 Cortina,
I am not sure when that corresponds to in the Capri production).
Triumph in the 70s used at two UJ sizes with corresponding flanges, so used two PCDs.
Dolomites use the smaller size. T2000 used the larger size for the driveshaft (and the smaller on the prop).
A Dolomite prop won't fit a Capri 2.8 diff. (I have just tried)
It is possible that a Dolomite prop could fit a mark 2 Cortina or mark one Escort diff though?
Therefore I am thinking it may be possible to use a mark 2 Cortina diff flange on a very early mark one Capri three litre differential?
Whether a Dolomite flange could fit the Capri diff is another question? I suspect yes.....
The thing is Clive, you are surely going to have a bespoke propshaft anyway?
thanks,
Ian
Thank you for the additional info. It makes sense... I know mk2 escorts (I think) were about the change from 7/16unf wheel studs over to M12. So what you say makes sense.
As an aside, the heralds and early spitfires have 5/16 prop and driveshaft bolts, later spitfires and the 2 litre cars used 3/8. And teh subaru diff I have in my spitfire, from a 320bhp turbocharged car?? 8mm, which is "the same" as 5/16. So must be strong enough. (I did take care and used grade 10.9 cap-head bolts, having to buy over-length and cut down so the unthreaded section was long enough to go past the join.
Anyway, the sprint axle should work fine with the ST engine. I will use an MT75 gearbox as oppsosed to T9 as (a) it is stronger bu some margin (2) it has a low, 3,68 ratio first gear so better suited to the sprint axle and (3) I happen to have an MT75 sitting here.
I am off tomorrow to collect the new ECU. At the same time I will have a look at the chaps car. He has an Avenger Tiger, plus a sumbea he is fitting an AJ30 engine into. That will be exciting to drive when done!