m50 hx40 newbie need some opions

[Good & Tight]

hey i have a stock s50 motor that i am swapping into my e30 and i want to turbo it aswell. if i got a hx35 would i be able to run it with my stock engine? if not what would be the main mods you recommend for me?
thanks-moe

Stock S50 on 7psi with an HX35 should be in the 350rwhp range. I wouldn't run more than 9psi on a stock engine, anything more then you need to drop the compression with MLS and head studs.

[mohamadr89]

My good friend's experience:

m50v
gt35 ball bearing
MLS head gasket; lower compression
ARP studs
3'' down pipe all the way to exhaust
14psi RMS tuned
305whp / 300wtq

The DD/drive-ability is great.
It lags a bit, but it's great.

what is better? vanos or nv?

[ak-]

My good friend's experience:

m50v
gt35 ball bearing
MLS head gasket; lower compression
ARP studs
3'' down pipe all the way to exhaust
14psi RMS tuned
305whp / 300wtq

The DD/drive-ability is great.
It lags a bit, but it's great.

[mohamadr89]

HX50 is going to spool very late in the rpm with a stock 2.5. HX35 would be a much better choice and be good for 400whp for a stock engine.

hey i have a stock s50 motor that i am swapping into my e30 and i want to turbo it aswell. if i got a hx35 would i be able to run it with my stock engine? if not what would be the main mods you recommend for me?
thanks-moe

[Good & Tight]

HX50 is going to spool very late in the rpm with a stock 2.5. HX35 would be a much better choice and be good for 400whp for a stock engine.

[thehowitzer]

sorri about i being difficult to read i wrote it on an iphone. my mistake the turbo is acauly an hx50.... its 65k on it appears to be really good shape compression checked out just fine. it is a vanos motor apparently there is away to delete/or lock it. this isnt an argument i am sure u no more than me but i heard the thx35 are the same as gt35r but spool faster any truth to that? i wanna run meth as a safty net my buddy who is a reputible tunner swears by it then gives me the option to run a hell of alot more boost later. when o ring the block i can run stock headgaskets and metric blue studs? as far as fueling what injectors should i run i am gonna run walbro 255 fuel pump. . if any buddy has some input or suggestions that would be great that later goal is 500whp reliable but i wanna aim for 400whp on a reasonable amount of boost and learn how to drive the car with 2.5 times the power it came with

[xwill112x]

first post was hard to read..but i think i got some info out of it... hx40 is big...like that comes stock on a cummins diesel i think..a gt35r would be a better choice if you dont want to wait a year for boost. dont think you would need meth injection for those numbers... i was told by a reputable tuner that a nvm50b25 with a gt35r, and misc other things will make towards of 400wheel at 11psi..

[The Humjet]

A lot of guys out there run m50 turbos on standard internals with just an o-ring, they're pretty capable motors and 400 whp is a realistic goal, any details on the motor how the condition is or whether it has vanos and what size is it a b25? you gotta tell us more details.

[thehowitzer]

hey guys so i drive 1991 318is 4 door alpine ehit love it came acro2s a m5o last week with 65k on it 5 speed zf trans and the z3 short shidter with and cut wiring harness it was a smoking deal for 400 usd so i picked it up. now here is my dilema i bought the car to run a boosted i6 at some point and i am getting the parts to do the motor. i have a hx40 that has a fresh rebuild on it on my desk, i a machinest so i have access to to make most anything i need. what would be a good solid reliable setup i know i am bout to get hated on this question has been asked a million times over but i am think go the standard megasquirt run the hx40 wich is big, and go ahead and oring the block. whats ur guys thoughts? i am thinking i can make a solid 400- 425 rwhp with meth injection and it be a solid dd