I live in Denver. I have a clean 73 2002 stock engine, upgraded suspension, and interior. I need some power and remember I am at altitude. I am hoping to build an m10 turbo to arround 230 horses, or more. I want to have A/C in the car, drive it every day on the street, and not have to rev and flog the shit out of it to get it to go. Should I just put an m20 in instead? I am a factory BMW tech and am embarrassed to have to ask, but untill this year I have not had to work on turbo cars. Some of the guys I work with have sr20det 240's and a celica alltrac turbo. I want a turbo m10 that can hang in with these cars yet be drivable. Is it possible? I see claims of guys getting over 300hp out of the m10? I think fitting an intercooler in front of the a/c condensor is not a viable option yet retaining a stock appearance is important to me. Do I need the intercooler? is there a good place to way out compression ratio vs. boost. Who has tried to build a turbo m10 to perform in this street fashion? Again is this a realistic idea or are cubes the way to gain the torque that I want? I do not want to reinvent the wheel here. I know there are a few guys out there who have done thier homework and know what to do. I am happy to purchase components from somebody with some know how who offers some support, or just kick down some coin for some solid advice. The sort like, use the 2002 block, crank, 318i head, blank pistons, turbo size?, intercooler air to air? air to water? size of cooler? injection system? I have done countless searchs and only a few things have been answered. Thanks in advance and please don't harp on the do a search, I have not found what I'm looking for and that would be truely a conversation with a Turbo Guru. I just don't want to waste money trying to save money. I'm willing to invest in the project and want to get the most out of it. Thanks

Take a look at all that Kurt has been through with his 2002 here: http://www.myturbo2002.com/

His username is kpolito99 if you want to PM him to chime in. I think he has (or had) his car for sale btw.

Chuck

Depends how far you want to take it & how deep your pockets are...you can turbo an m10 with a blow-thru carb or go with a full standalone EFI & EDIS conversion. Also depends on how resourceful you can make the project...there was a guy not too long ago who turbo'd his e30 318i (m10) for a few hundred bucks. And, how concerned you are with longitivity?...IMO, extra engine cooling is a must especially if you're planning to push nearly twice the power than it did stock.

There were turbo kits made for the m10 (for the 320i/E21 car) back in the 80's, and a bunch of those kits seem to pop up on ebay every once in a while. But they were non-intercooled (only 5-7psi), and the fueling components were made to work with the K-Jetronic CIS. IMO, you'll want to have an intercooler if you're looking to get at least a safe 200hp. An air-water intercooler will be relatively easier to install, but it uses more components and are usually more expensive.

IMO, the first place to start is setting a budget for this project, and be sure to leave a nice buffer for unexpected costs. If your goal is 230hp and your current motor is already pretty solid (some better pistons wouldn't hurt), it could just be a matter of installing the turbo components & giving it a good tune (via at least upgraded fueling and a way to retard the timing under boost). Or, like you mentioned, you can build the motor up to extract some more power.

But, if you want something a lot more simple & a little more reliable, I'd go with the 6cyl swap...a M50/2 or S50/2 swap would still be pretty badass in a 2002.

i love M10's :D

if your wanting something to keep up with lightly tuned SR20's (270rwhp) you will need nothing more than a nice rebuild and boost.
If you want to lead the pack (300rwhp) then a set of pistons will do - but that will be pushing the limits of the stock rods.
If you want to lay the smack down on them (scary rwhp) a full build will be needed. This includes head work, full balance, 8K rpm (or more) and a big a$$ turbo.

for 270rwhp, you wont need much in the way of $$ to get it done.
Megasquirt for ecu
Injectors
fresh motor (or not, but i would)
you can use the stock exhaust manifold with an adaptor, but personally i wouldnt - so you need a turbo manifold.
clutch (i think, i have NFI about the power capability of the stock clutch)
intercooler - an old supra cooler would be okay, as would a second gen RX7 cooler modded to suit.
fuel pump needs attending to, i would never trust the stock pump - not even with a stock motor, they are too old IMHO

There is prolly a few things i have missed, someone will jump on me im sure :P

Really? I didn't think it was that easy to get 270 hp...

I've got a BAE kit, EDIS, New engine, and a Porsche turbo WUR and one of my friends said I shouldn't expect more than 170 hp. Is that because of the size of the turbo, or am I missing something?

I'd LOVE to have 270 hp, my friend has a nissan 240 on boost and he brags all the time about how it could kick any bimmer's a$$, taking him out would be awesome. But I really don't think it's that simple - JR Cook has 200 hp, and hes done a ton of work on his.

I mean, mine doesn't have an intercooler - but that's coming soon enough. Would a bigger turbo really make THAT much difference?

DrewDude320i, if you are running the stock 320i fuel distributor then you will probably be limited on attaining anything above 7-8psi of boost. With a volvo 240 fuel distributor I think you should be able to fuel it enough to 10-12 psi which should get you near if not above 200 whp. Intercooling is an almost must, but as far as 270whp goes, I think you would probably have to invest in some forged pistons and then crank up the boost a bit more. Good and Tight is running some pretty high boost numbers on his m10, and I think its had some internal work done to it.

*edit

wow old thread!

Who bumped this from the dead, I just sent the guy an IM and he probably hasn't been here in over a year.:alright

Really? I didn't think it was that easy to get 270 hp...

I've got a BAE kit, EDIS, New engine, and a Porsche turbo WUR and one of my friends said I shouldn't expect more than 170 hp. Is that because of the size of the turbo, or am I missing something?

I'd LOVE to have 270 hp, my friend has a nissan 240 on boost and he brags all the time about how it could kick any bimmer's a$$, taking him out would be awesome. But I really don't think it's that simple - JR Cook has 200 hp, and hes done a ton of work on his.

I mean, mine doesn't have an intercooler - but that's coming soon enough. Would a bigger turbo really make THAT much difference?

None of the after market kits will make 270hp, you need a custom built setup.

I'm here have the car and quite a few of my turbo parts not all yet. Please keep posting and by Thurs I hope to have some time to check out some of the info. Thanks for any help. This project is alive and waiting to winter for money and time. The house is killing me this summer.

If you are seriously considering installing a turbo I may have some parts available for sale soon. Recently I decided to investigate changing from my log manifold to a tubular header design.

If things work out I might be looking to sell my Calloway manifold, turbo (2 exhaust housings), down tube, waste gate and bypass tube with SS bellows. Basically all you would need to do is have a 3" diameter exhaust fabricated from the bottom of the down tube to the rear of vehicle and plumb the compressor inlet/discharge from filter to throttle body.

Let me know.

need to know where i can find the supercharger in take for a m-10 can't find one but i know its out there help me uzer_4_life@yahoo.com

I live in Denver. I have a clean 73 2002 stock engine, upgraded suspension, and interior. I need some power and remember I am at altitude. I am hoping to build an m10 turbo to arround 230 horses, or more. I want to have A/C in the car, drive it every day on the street, and not have to rev and flog the shit out of it to get it to go. Should I just put an m20 in instead? I am a factory BMW tech and am embarrassed to have to ask, but untill this year I have not had to work on turbo cars. Some of the guys I work with have sr20det 240's and a celica alltrac turbo. I want a turbo m10 that can hang in with these cars yet be drivable. Is it possible? I see claims of guys getting over 300hp out of the m10? I think fitting an intercooler in front of the a/c condensor is not a viable option yet retaining a stock appearance is important to me. Do I need the intercooler? is there a good place to way out compression ratio vs. boost. Who has tried to build a turbo m10 to perform in this street fashion? Again is this a realistic idea or are cubes the way to gain the torque that I want? I do not want to reinvent the wheel here. I know there are a few guys out there who have done thier homework and know what to do. I am happy to purchase components from somebody with some know how who offers some support, or just kick down some coin for some solid advice. The sort like, use the 2002 block, crank, 318i head, blank pistons, turbo size?, intercooler air to air? air to water? size of cooler? injection system? I have done countless searchs and only a few things have been answered. Thanks in advance and please don't harp on the do a search, I have not found what I'm looking for and that would be truely a conversation with a Turbo Guru. I just don't want to waste money trying to save money. I'm willing to invest in the project and want to get the most out of it. Thanks

for 230hp you could get away with stock internals using the stock 2002 motor (the one with the e12 head and flat tops) which is a non tii motor and is stock 8 to 1 compression, us an air to air just whatever fits nicely behind the grille will work, take the stock exhaust manifold and flip it upside down and have an adapter made to go from the stock manifold flange to t3 flange and use something along the lines of a garret gt28r.
for fueling you can use megasquirt efi or you can do as i plan and use twin weber dcoe carbs in blow thru. you will have to have an intake plenum fabbed to box in the entrance to the carbs. webers are pretty good for blow thru from what i hear do to there simplicity and quality, they use ball bearing shaft seals, and tuning should be a breez since most of your driving will be done on idle and progressive jets you can set them to what a normal n/a car would use then go much larger for your main jets, also the use of a boost reference fuel pressure regulator helps so i hear.
most of your decisions are going to be personal preference, 230hp can be archived using a tiny turbo like a mitsubishi 16g but wont leave room for improvement down the road, an intercooler in front of your ac condenser will not be a problem if you fit a slim electric fan between the condenser and the cooler blowing threw the condenser.
there are 2002s with forged rods and pistons ported head and cam making over 500hp turbocharged, one which i can not find the video of anymore was street driven making 385whp on pump gas and over 600 on c16 race fuel. i am sure that with 230hp you will make those 200-220hp sr20s and 3sgte celicas look like snails, a 230hp 2002 is capable of low 12 second 1/4 mile times with slight weight reduction.

another cool thing about doing blow thru webers is that in the future you can convert to fuel injection and use the webers as throttle bodies. the blow thru would be enuf to handle more then your stock motor could and if converted to efi the webers will flow enough to handle more then anyone should ever want in a 2002.