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MG MGB Technical - Replacing throttle shafts

I would like to replace the throttle butterfly shafts with the oversize ones but Moss charges over £160 for a reamer to do the carb. body. Are these available somewhere else at a more reasonable price or has anyone got one they would hire to me. Thanks Trev
Trevor Harvey

Hi Trevor,

I rebuilt a HS2 with bushes supplied in a rebuild kit.

see here

http://www.mgb-stuff.org.uk/recosu.htm

The kit for twin HS4s, was something like $104 Aus.

The rebuild carb works great.

Herb
Herb Adler

Are you certain you need oversized shafts/new bushes? I've often found that when I slip the shaft left or right so that an unworn bit of the shaft is in the bush there is often little play -- meaning in that case new standard shafts and you're done!
Rob Edwards

If you do find (by Rob Edwards method) that you still need over sized shafts, check around locally for a machinist who will line bore the shaft bores. You can probably get it done much cheaper than purchasing a special reamer. Cheers - Dave
David DuBois

Trevor,

Having just done this operation (inserted bushes) on a set of H4's from a TR2, on a lathe it needs a lot of effort to set up accurately - Burlen recommend that you bore from both sides - not through.

Just found out via the midget BBS board that our friends from across the pond have a clever reamer with 5/16" shaft pilot and a larger cutter size to suit bushings supplied. Found one on Evil bay @ 36ish + about 14 postage - still expensive but much easier to do.
Simply ream on side (piloted on one side old bearing) - fit bush and reamer the other.

R.
richard boobier

This thread was discussed between 03/08/2013 and 06/08/2013

MG MGB Technical index

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