20 replies to this topic

[shorty]

age won't affect your insurance ive you've only been driving a little while then id say atleast wait a year maybe 2 before you do anything drastic to the engine. a stage 1 kit is a killer to some peoples insurance these days so id say wait until you have a few years no claims and your insurance is cheaper.

would agree the 850 can be made into a nice little engine with some work,

edited: info was wrong edited to suit : cheers guess-work

Edited by shorty, 04 February 2010 - 02:42 PM.

[Guess-Works.com]

would agree the 850 can be made into a nice little engine with some work, i've also heard you can put a 1275 crank into it and effectively make it a 1071 engine - (someone will correct that if its wrong though)

You're wrong... on multiple accounts..

1, the crank wouldn't fit ( main bearings are different diameters )
2. the 1071 is a short stroke 1275, not a long stroke small bore
3. the stroke of an 850 is 2.678", the stroke of a 1275 is 3.2", if you could fit the crank in, would make is 1015cc

I'll stop there..

Edited by Guess-Works.com, 04 February 2010 - 02:33 PM.

[Guess-Works.com]

And first thing to do when tuning an 850, is get it machined to run cam bearings, as standard the cam runs on the bare iron block.

[bmcecosse]

But it's ok if you just keep to a mild cam (say AEA 630) and DO NOT fit strong valve springs!

[Mattlav]

hmmm RC40 centre exit ok? thats my next "mabye" i mean im going to have to replace the exhuast anyway.. due to rust so i think RC40 centre exit would be a nice touch?

[Boycie]

I run an RC40- it's the best choice IMO, perfectly designed for fit and performance. Mine's a side exit, really subtle.