Has anyone had a 4 speed rebuilt, strengthened from Australian 4 Speed Specialists?
They sell upgraded M20/21's up to approx. 200kw for around $2000.
http://www.hotfrog.com.au/Companies/...cialists-35856
Gaz.
Has anyone had a 4 speed rebuilt, strengthened from Australian 4 Speed Specialists?
They sell upgraded M20/21's up to approx. 200kw for around $2000.
http://www.hotfrog.com.au/Companies/...cialists-35856
Gaz.
Hi there no van man, i had mine done but it was my own box around 3 years ago, you wouldn't pick it as a professional business it is at the back of old house in Belmore shit everywhere but he knows where everything is and very smart guy he knows his stuff, it was $900 to rebuild mine and is very good, no problems at all.
That's good to hear mate, he mentioned that as part of the upgrade he machines the housing and cluster gears so he can use a 21mm lay shaft, same as the Toploader.
Last edited by No van man; 11-01-2015 at 02:05 PM. Reason: spelling
What else does he do to make them stronger
That's a good idea, the layshaft was always a weak link.Originally Posted by No van man
Vans.... This is the 2nd time round the block, 40 years later! talk about turning back the clock!
I was always under the impression the Main shaft Circlip was always an issue? Is that right? Wonder if he sorted that out.
Yeah they used to machine a biggercirclip groove and it was on the bigger lay shaft I think.
$900 is a bargain. I took an M20 to a shop in Perth a few weeks ago for a laugh... $1100 starting price to crack it open and do bearings. any gears etc then add hundreds more.
BQZ
They aren't hard to rebuild yourself is they need no machining. They are pretty basic, lay everything out on a clean table as you disassemble and replace what's needed. I did one when I was about 11 or 12 (under Dad's watchful eye) and it lasted for ages.
Vans.... This is the 2nd time round the block, 40 years later! talk about turning back the clock!
hi I am peter from Australian 4 speed specialists we also put a spiral on the main shaft as well and we use the Mitsubishi C3 hi clearance doubble sealed bearings used in their 4 wheel drives with a rev range of 9000 revs need to know more just ask me
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