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HOW MUCH POWER CAN A TYPE 3 GEARBOX HANDLE?

Posted: Sun May 06, 2007 7:45 am
by John C
Ok Gentlemen, I?ve had conflicting advice from some eminent gearbox reconditioning firms and so I need a straw poll from the streets ?i.e. your opinion.

I?m putting a 157Bhp highly tuned (and peaky) 1700 Crossflow into a 550Kg Caterham-alike kitcar. I ran a Type 3 box (from a Cortina MkII 1600 GT so it has nice close ratios) with a 110-120 Bhp Xflow no problem, but will it last under the power of the new engine?
The box is as shown on this page:
http://www.zetecinside.com/xr2/gearbox.htm

2 of the gearbox firms reckon the box it will only handle 140-150Bhp tops.
A 3rd firm reckons it should be OK up to 160-170 Bhp.

What do you reckon, and what power have you put through a Type 3 box?

Posted: Sat May 19, 2007 9:52 pm
by mfw898y
Don't know if this helps cos never used one but I'm pretty sure its basically a single rail version of bullet box (2000e) so assuming power levels similar. Same input shaft etc. Think i read this in Burton mag if anyone can confirm.

Posted: Tue May 22, 2007 8:53 pm
by John C
Yes, according to the Burton site you are dead right.

What sort of power do you dudes put through these boxes then?