M10 carbed turbo?

[GrindCulture]

Can it be done?

I've been thinking about it for a while, planning on initially building a low cost non-intercooled turbo M10 engine similar to the 2002 turbo engine, however using a carburetter M10 (rather than the early mechanical fuel injection used on the 2002) to save money on mapping a stand alone management system. Not looking for huge power, just a little bit more poke to keep me happy before I go for the MS and intercooler to bring the power up, then adding better pistons and boosting even more.

The BMW 2002 turbo M10 ran 7psi producing 170bhp and about 177lbs/ft of torque if I recall correctly. My thinking was if I set up the carbs and wastegate properly I could achieve similar figures with carbs.

Feel free to correct me and put my mind at ease

[Aubs]

Sounds like a cool idea man, Didn't the 2002 turbo use either Bosch L or K Jetronic?
If so, its not too hard to get either of those systems to flow adequate fuel for this kind of power, just with some mods to the regulator.

[Alex]

will be fine with carbs, you might have to ditch the standard pierburg, the weber replcement might be ok . a set of weber 40s will be good

[e21Jason]

Hi

Probaby as easy to turbo a efi model on ms or standard efi than convert to carbs as you need a new manifold and turbo spec carbs that need to be jetted to suit plus a new fuel pump etc. a set of late dell'orto DHLA woudl be fine.

Spend the money on msfirst rather than carbs that you wilswap for ms later.

Jason

[GrindCulture]

Sounds like a cool idea man, Didn't the 2002 turbo use either Bosch L or K Jetronic?
If so, its not too hard to get either of those systems to flow adequate fuel for this kind of power, just with some mods to the regulator.

The 2002 used a Schafer fuel system.

I didn't realise the standard efi could be modded to run a turbo, is it a fairly cheap option or will it require quite a hefty re-map? I want to keep the cost down as much as I can whilst still wetting my appetite for turbo charging whilst I'm doing my apprenticeship.

Thanks for all the input guys!

[GrindCulture]

I suppose another idea would be to find a second hand MS module and all the bits and pieces I need and to learn to set it all up myself. I'm sure this is what fozzy did with his M20 turbo setup.

[crazymonk]

You can turbo carbs no worries, I've done it before with one of my early cars. If you go for webers or something you need to mod them a bit unless your running really low boost, you may need seals on the spindles that hold the throttle butterflies, and whatever carbs you use, fit nice new gaskets, as the pressure difference on the inside and outside of the carbs can cause the gaskets to split. One way to stop this is to mount the carbs in a selaed box so it equalises the pressure inside and outside the box, but then you've got to get the linkage and fuel pipes through while still keeping the box sealed. Bike carbs are really good, you can make up a manifold for them really easily, even if you can't weld it together, you can cut the metal plate and tubes for it, and get a local engineering shop to tig weld it together, it cost hardly anything and will work and look great. Bike carbs are of a different design to webers and dellorto's, more like su's but they're simple, effective, and really cheap on ebay, even re-jetting them is cheap. I'd fit an intercooler though, you can get some on ebay for £30 and even one thats small will really help compared to not having one. Also have you considered that by the time you've bought a new fuel pump, regulator, the carbs themselves, and made the manifold etc, you're probably not looking at much less than a mega squirt. I hope it all goes well though, sounds like it will be a great laugh when it's done.

[dobbie82]

would anybody be interested in earning a free manifold? A guy here wants to get in touch with someone doing an m10 turbo conversion as he needs installation pictures to put with the parts he sells. He's jsut down the road from me but i have an m40

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... TQ:GB:1123

[Alex]

would anybody be interested in earning a free manifold? A guy here wants to get in touch with someone doing an m10 turbo conversion as he needs installation pictures to put with the parts he sells. He's jsut down the road from me but i have an m40

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... TQ:GB:1123

[GrindCulture]

I saw that on ebay the other day, unfortunately I probably wont be doing it for a little while due to my daily driver being in dire need of attention . I don't even have the motor to start on yet, I'm just doing all the research before I get cracking so I know what I need to get etc. It's really annoying that the opportunity to get a free manifold has come up now, and not in a few months time

[Superigorot]

I currently have an m10 carbed turbo. It runs great! I have pics and videos if you want...

[jaistanley]

Isn't the M10 easily converted to injectio though (didn't the 318i E30 have efi??). If so, it'd be very cheap and very worthwhile to use megasquirt. So much easier to tune and get a smooth reliable drive.

Just a thought...

I've always quite fancied a turbo 2 litre M10 for the grunt. Circa 250 brake..

[GrindCulture]

I currently have an m10 carbed turbo. It runs great! I have pics and videos if you want...

Sure put them up! I'm all up for seeing some more 4pot turbo rightness!

When the summer's over I'm going to try and source an E21 320i/4 motor for the build and not bother with carbs at all.

[fowler]

easiy to do but you will need trigger wheel etc off M40. for the MS to run properly

[GrindCulture]

The guys on bmwe21.net say that an M42 trigger wheel will work fine with a bit of minor adjustment.

[Superigorot]

Frankly, it would run better with a blow through type.. stay away from the carbs.. Im starting a 320i turbo project.

[secondtimelucky]

Let see some videos then

[Superigorot]

Videos

http://www.youtube.com/watch?v=Tno0SIA4lbw

http://www.youtube.com/watch?v=xNyMm5JglxY

[secondtimelucky]

You do know both those vids are he same??

[GrindCulture]

Nice, liking those wheels too

[Superigorot]

Fixed the videos..

[suzie650]

8500rpm?!?

[ShepsEvo3]

I see the big clock next to the speedo to time 0-60's

[secondtimelucky]

8500rpm?!?

Thats what I was thinking, thats v-tec territory

[Superigorot]

actually it reaches 9000rpm.. though the meet of the power is from 5500 to 8500...

[Superigorot]

I see the big clock next to the speedo to time 0-60's

i didnt want to be redundant with the tach so I kept the stock clock...

[suzie650]

not worried of lengthening your conrods?

[GrindCulture]

not worried of lengthening your conrods?

Is that a (or is it an) euphemism?

That motor sounds brilliant fun, really really need to hurry up and get rid of my breaker so I can start the M10 magic for myself...

[suzie650]

not worried of lengthening your conrods?

Is that a (or is it an) euphemism?

That motor sounds brilliant fun, really really need to hurry up and get rid of my breaker so I can start the M10 magic for myself...

Well, I know that these engines are strong, and I don't know a lot about them, but I doubt that the standard internals were meant to rev that high... especially with more pressure on the piston.
I might be totally wrong, though.

[GrindCulture]

All the other M10 turbo buildups I've read about have had a stock rev limit, interesting to see someone chucking more into the equation and really testing the M10's reputation.

[Superigorot]

not worried of lengthening your conrods?

Is that a (or is it an) euphemism?

That motor sounds brilliant fun, really really need to hurry up and get rid of my breaker so I can start the M10 magic for myself...

Well, I know that these engines are strong, and I don't know a lot about them, but I doubt that the standard internals were meant to rev that high... especially with more pressure on the piston.
I might be totally wrong, though.

I made some internal modifications like double valve springs. But the pistons are new and stock. Valves for the m10 are stainless steel, which are durable. I havent replaced the rocker arms yet. You can get forged pistons and better rockers.

[Superigorot]

All the other M10 turbo buildups I've read about have had a stock rev limit, interesting to see someone chucking more into the equation and really testing the M10's reputation.

Hey Buddy. This M10 Kicks ass... its a good base for boosting. It cost mo around $1500 total and I run a 7psi boost only. give me a call if you want to ask any questions. Im sure that this is the only M10 with this type of configuration.

[GrindCulture]

All the other M10 turbo buildups I've read about have had a stock rev limit, interesting to see someone chucking more into the equation and really testing the M10's reputation.

Hey Buddy. This M10 Kicks ass... its a good base for boosting. It cost mo around $1500 total and I run a 7psi boost only. give me a call if you want to ask any questions. Im sure that this is the only M10 with this type of configuration.

$1500 is a good sounding price. Did you machine your own manifolds etc. and map the ECU yourself?

[Superigorot]

All the other M10 turbo buildups I've read about have had a stock rev limit, interesting to see someone chucking more into the equation and really testing the M10's reputation.

Hey Buddy. This M10 Kicks ass... its a good base for boosting. It cost mo around $1500 total and I run a 7psi boost only. give me a call if you want to ask any questions. Im sure that this is the only M10 with this type of configuration.

$1500 is a good sounding price. Did you machine your own manifolds etc. and map the ECU yourself?

I used a weber carb and used the stock intake and exhaust manifold. I dont need any ecu because its not F injected, thats why I can rev to the moon. This is a draw through set up contrary to the blow through for FI e30's.

[GrindCulture]

Ah right, misread that bit How much power you making?