BMW M10 Engine

[swrt]

Hi Guys.

I have a Chrome Bumper 316 with a M10 carb motor currently the motor has a vw carb on it, it has a 50mm free flow system.

My question is i have a M10B18 fuel injection head, fuelrail, TB ect.

Would it be a good idea to change the carb head out to the efi head would I be able to feel any difference in performance.

And what upgrades would you guys sugest with estimate output

[toby]

Having driven the M10 as 316 and 318i (both 1.8 ) I'd say there's little between them. The 318i is theoretically quicker with better fuel consumption but I've owned and thrashed a standard 316 and it went better than any 318i M10. I'd rather put a big carb on a 316 for better throttle response etc. This would then make the 316 faster and more fun to drive than a 318i which is limited in tuning terms and has the intake restricted by the air flow meter (for the fuel injection system).

Here's one (it's been made into 2 litres)
http://www.e30zone.net/modules.php?name ... ic&t=18844

What kind of carb is your VW one?
The solex 32/32 didta upgrade is a handy one or ford also mentioned on this thread
http://www.e30zone.net/modules.php?name ... x&start=25

Or you could fit the efi head and add megasquirt or similar aftermarket ecu and get very good tunable gains while integrating newer components like a maf and wasted spark (no distributer). Changing to fuel injection will require fuel pump, return pipe to tank etc etc

[swrt]

See my problem comes in in that i am going to have to spend 200 pounds on the management system 300 pounds on labour and 100 pounds for the head now that might sound cheap but when u convert it in to south african rands then it comes to about R6000 which in SA is a lot.

I have the carb of a 1.8 Mk1 golf they still build them in south africa its not bad.

Are you talking about the 2.0 ford carb

[toby]

Ah a cheap carb conversion is the way.

I've heard of a 2.0 ford sierra carb with an adaptor to fit or the BMW M10 2002 or E21 2.0 carb upgrade too. Have a search around on the forum. Have a look at the links to the threads I posted.

[e21Jason]

Hi

webber manifolds turn up from time to time one ebay and even a twin weber setup from a 2002, look out for a couple of used webbers and then rebuild them, loads of fun.

Jason

[swrt]

I have got a set of 40dcoe webers at home on my alfa the thing is I still need some fuel economy this is my daily drive I can get the manifolds made in SA ant the carbs fitted but as i said my alfa is getting 4km/litre on fuel so that is not a option for me they are great fun to rebuild though

[toby]

solex 32/32 didta carb is a compromise then for power and economy

[lance1a]

Hi, Try bike carbs. I run a set of 40mm Mikuni's from a gsx 100 re-jetted to 160 mains on my M10. about 27MPG at the mo and quicker than my alfa 2.0 gtv. but am converting to 2002Tii lump with 292 cam and the same carbs.
They're cheap and easier to setup and maintain than weber or Dell'orto carbs. cut up an old manifold and connect to bike carbs using silicone hose/jubilee clips.

[swrt]

I have had my carb redone and fitted a freeflow and dyno'd it the readings were 89hp and 140nm has anybody on this forum turbo'd a M10 we never got the 2002 so i need to know if will be worth slapping a turbo on my car it wil cost me the same as a m20 conversion.

[lance1a]

Where in SA are you? I lived there for thirty years. Look at Korman Fast BMW on the web. It will give you an idea of what can be done, also fritzbits do a lot with the M10 motor. If you do a proper turbo conversion you should be alright as long as you lower the compression ratio accordingly, but remember that if you do a blow though system you will need to pressurise the carb to withstand the extra PSI, and if you do a draw though you can't use an intercooler (unless you want to entertain your buddys with a large explosion!) so you don't gain too much anyway.
there are lots of sites with info on the M10, and remember your car has the 43mm big valve head, so it flows really well in stock form. Stick a decent set of carbs, a high lift cam and a custom manifold (a damn site cheaper over there, we pay the equivalent of R5000/7000 for a custom manifold here!) and you should push 130BHP fairly easily (unless you live in JHB or elsewhere on the reef as you will lose up to 17% due to altitude, unless you turbo). Get all the info on turbo charging that you can, coz it ain't as easy as it sounds.

[swrt]

Hi there i am in East London.

The more I look at my car the more i want to do to it but money is always a factor.

1: The carb conversion(Weber off a Ford 2L) with cam and head recon will set me back aprox R3000-00.(+- 90kw)

2: The DCOE's arent a option as fuel prices in good old south africa are getting a bit rough.(they will work a treat though)

3: The turbo option I am looking at R12000-00 for the conversion from a reputable tuner I have a 318i M10 head to convert the Car to fuel injection.(+- 120kw)

4: Motor conversion I can buy a 323i motor and gearbox from a guy i know for R6000-00 if I install all of it myself it will pobably cost me R8000-00 inc motor.(+- 110kw at fly)

These are my options

[lance1a]

shee-ite things are getting expensive over there! Drop a 2.5i into it or go the whole hog and cram an M30 3.5 in.

[swrt]

Sorry the turbo should be 12k not 120k, the problem is finding a m20 they are becoming rare the m30 is a option i should look into.

can the 333i engine mounts be used?

[toby]

I wouldn't bother with a 323i engine. It's too old to mess around with and not that quick. The bike carb option sounds good. Or there is still the possibility of the didta carb from a 2002 http://www.bmw2002.co.uk/for_sale/parts.html

[lance1a]

you can buy 335 (as the conversion is know here) engine mounts in the UK. check elsewhere on this site. It's a very popular conversion. Though I can't see why you couldn't use 333i mounts or fashion some using them as a template. M50 conversions are also becoming more popular too.

[swrt]

I have just spoken to my tuner he is of the opinion that the Turbo conversion and the M30 are viable, the big problem in SA is that the M20 is rare the M30 is extinct how much is one of the M30's in the UK.

[lance1a]

Howzit. A decent M30 engine would cost anything between £50.00 and £200.00, I just bought a 1986 BMW 735i complete with E28 M5 alloys for £100.00. Surely there must be a couple of old 7 series lying about? I know the 535 was rare back there but there were plenty of 735i's about and that was only six years ago. Google a guy called Clive Massel in SA, he specialises in M10 motors and runs a full race Alpina 2002Tii replica. 240bhp!!!
Check the prices on Ebay UK and your SA equivalent. There's a 2002 motor complete just about to end for around the £250 mark. M30 gives around 218BHP but a lot more weight. I will keep an eye out for you on the m30 side and email you with the link. did you get my emails? Cheers

[swrt]

Hi there was looking around on the web for the 335 conversion as you guys call it there are a lot of mods needed to make that big six fit.

I did not get your email our email filters are set very high so it might have been blocked will pm the other adress to you.

I searched for a 735i the only ones i found were 20k and up but all are running vehicles I will phone the scrapyards today, will a 5 series 2.5 fit in a e30 or will i need to swap the sumps out.

I think my M10's head is on the way out its making strange noises and heating up so the conversion will be happening soon

[lance1a]

not too sure about the sump but are you talking a M20 motor? I will email you the article and pics.

[swrt]

Yes the M20 I'm not to sure wat that 5 series model code was, I can easly find the 525 motor in SA but the 325 is a different story.

[swrt]

Got your mail, will check those carbs out