Spitfire drive shaft.

[aggie]

Further to my original post, came to fit the new drive shaft and this is what I found !  Any body seen this before ?  Yes, the bit at the bottom is the top of the diff casing where the spring sits.

[trigolf]

Yes, unfortunately. It's not uncommon. Remember these cast iron bits are getting on for 50 yrs old now, and have probably had some less than sympathetic treatment in the past!

 

[johny]

always thought the diff casing takes quite a bashing from the suspension loads both one sided and all together😮 Makes me a bit nervous about using a swing spring diff (4 hole) with a fixed spring in my Vitesse....

[Steve P]

I have a 3:63 (4 hole) on my 1500 Herald with a fixed spring,i was going to ask about the addition of a Courier spring with a 1 inch lowering block to it, too much load?.

Steve

[Pete Lewis]

when i chucked the swinger trial on my vitesse  with a 4 hole diff   and went to the fixed  courier + 1" block  i just drilled the extra two holes with a battery drill,  drilled in situ.   

just used the top plate as a rough  jig,   drill 8.3mm and tap 3/8 x 24 unf  and fit the new studs  its easy to drill and i drilled approx 25 mm deep  without breakthrough 

Pete

[johny]

Interesting, the original stud holes go right through to the interior but I suppose theres no real disadvantage if they dont....