m50 turbo or m20 turbo???

[midnight]

guys im trying to decide what to do with mw car to either dump an m50 2.5 24v and turbo it or turbo the 2.5 m20 thats in the car already?

[beemerboy318]

im turboing my m20 lump with a kit from american ebay, runs 8 psi, have a look!

[Colonel Sanders]

stick, with the m20 mate kevin, rebuild it, shave the pistons, you will put down almost as much power as the m50.
just my oppinion though as the m50 would be better but it will cost a load more to fit and sort the motor.

[Ant]

M20 B25 with a T3 running 0.8bar is 260/270 HP on stock CR

M50 would give a little more , buts its more involved.

as for Ebay turbo kits.................................. Oh dear , you get what you pay for guys remember !

Kevin, leave the B25 in there dude, 55 K on that lump and its ready for a snail as-is dude

[E30BeemerLad]

Ant, what is the extra chew involved with blowing the M50?

[Ant]

Even less room to get turbo, manifold and charge pipes in and out of the M50, bigger rad and push fan will also be fighting the intercooler for space in the front mask.

Nothing is impossible of course, but there's some hidden extras to think about on the M50T, if you can wait a few months, I'll have some 1st hand data for ya

[E30BeemerLad]

cheers dude. I'll feel invincible after doing the M50 swap so some forced induction will seem like the next logical step.

May settle for a cheeky shot of gas to tide me over

[midnight]

yeah i think i mite just do another m20 turbo then, but dunno whether to go full blown straight away or just turbo it and see how it goes, if it keeps blowing up mite just have to go bulletproof bottom end

[Colonel Sanders]

im usin my standard bottom end, and a 3mm mls at the mo, gonna get everything else done an learn how to do a bit of tuning on the old bottom end, im building a pretty bullet proof bottom end to take around 1.7BAR safe.
but that wont be goin in till this one blows an i have sorted my rear arches..
DO IT DO IT DO IT......

[Ant]

stock 8.9:1 CR is safe for 0.8bar , no issues, with a ig turbo you can run more timing and up the boodst to a bar, no issues as long as the timing and fuelling are optimised !!

[midnight]

actually i think i will just bang a big silly turbo on the stock engine, will prob be needing your assistance in sourcing the parts when i get back from amsterdam ant, but im kinda feeling a big intercooler hanging out the front though, ie an ally 200sx front mount