E30 Zone

Hey just joined the site. I'm seriously thinking of turbo'ing my '86 316. I using a 1.8 injection M10 engine. Has anyone here turbo'd one? Its for road and track use so I want to keep it drivable instead of going for all out power. any advice would be appreciated!

'ChrisP' or 'CHRISP' has a turboed M10, use the search function

i turbo'd an m10, it worked well,

the block was bored to 91.80 and used sierra cosworth pistons on modified m10 rods with an 84mm strokes14 crank to give 2225cc, it had 2mm oversize exhaust valves, schrich 284 cam, 318i inlet manifold with a big throttle body, a t34 turbo on a tubular exhuast manifold, and made 320bhp 350lbft on 1.5 bar boost

teamalsoran wrote:i turbo'd an m10, it worked well,

the block was bored to 91.80 and used sierra cosworth pistons on modified m10 rods with an 84mm strokes14 crank to give 2225cc, it had 2mm oversize exhaust valves, schrich 284 cam, 318i inlet manifold with a big throttle body, a t34 turbo on a tubular exhuast manifold, and made 320bhp 350lbft on 1.5 bar boost

Sounds like a good engine What head gasket did you use? I hear the original BMW one is best. Is it worth cutting a groove on the head to fit the O ring?
Well I'm hoping to use standard internals and probobly standard cam because i dont have a massive amount of cash to put into it. I will be rebuilding the engine though and using a smaller turbo (mitsu td04) and max boost will be no more than 15psi.
Have you any pics of your own? How reliable is it?

any update on this thread? Is it essential to run fuel injection or can the turbo be run with carbs successfully as well?

if you want to have a well sorted and reliable turbo motor a properly mapped managemnt system is a must. carbs are possible but no where near as good, if you want to go the carb route the best most cost effectieve way is buy a weber twin 40 dcoe mainifold and get the carbs and airbox of a lotus esprit turbo

i used an oe s14 headgasket and ARP stud kit, but even so it tended to blow head gaskets, o ringing the block was a better solution, but the real cure was to have a special headgasket made by ferriday engineering,

at 1 bar boost it made 270bhp, at that boost level i would expect head gaskets to be reliable

the only pic i have of it i think


By grahambahr, shot with FinePix1300 at 2010-02-20

how much boost/compression ratio can you safely run on 95ron fuel? 270 hp perfect

how can i get more kick from the m10 carb engine without having to turbo, what sort of tuning can be done on these engines.. i would think that more air intake and maybe fuel delivery is what im after, not really a tec guy..

thanks..

m10's respond well to induction tuning such as bigger or twinchoke sidedraft carbs,head work and cams all again work well, although if you have an 1.8 the best starting point is to convert it to 2.0.

i think the m10 is a great engine but in an e30 shell if you want more go a swap to an m20 2.5 makes far more sense than tuning an m10