mg metro block,with turbo
Turbo Mini Forums

ive gota 1275 mg metro engine, can i take the head off the turbo and whack it on the mg block and use that with the turbo???

pro's and cons please lads!

cheers

heads are virtually the same cc's (in theory!) so isnt going to make any CR difference.

MG metro engines are too high CR to just whack the turbo on.

Dont think there are any pro's!

Problem with turbo's is that they need to have a good build for them to be nice and reliable. you cant just bodge them together otherwise you get problems.

true iain

theres also the sodium exaust valves to consider which the turbo head sports

I wouldnt be worried about using the mg metro head on a turbo at all. If anything it may breathe slighty better (cant quite remember).

The OE valves are good quality and as a few people have found out turbo ones have been known to part the head and stem...

mg metro heads have bigger valves...... not sodium filled tho like you say.... only pro i can think of is the mg cam is aparently very simmilar to a phase 2 cam? compression is only 0.2 higher that a turbo lump tho isnt it? (turbo 9.2, mg 9.4? could be wrong?)

And on the 7th day........... God created turbochargers!

Turbo 9.4:1

MG 10.0:1

I believe.......

thats the low CR mg as well tom i reckon. the unleaded one. the leaded one is a bit higher i think. not 100% though.

Turbo compression 9.4-1, nat asp MG 10.5-1. Only the leaded cylinder head had a larger inlet valve, the unleaded version was smaller apparantly.

Phil.

WWW.TURBO-MINI.COM

ive got one in the garage so could check IICBA!

Pretty sure though the MG metro leaded and unleaded CR's were different. Really should look in my haynes but its downstairs!

It would make sense the unleaded ones being lower compression because 4 star has a higher octane rating so less chance of knocking with the higher compression.