2.0L m10'd 316 ***Video added***

[dsio]

Hi Guys

Iam also building a fast m10 for an e21 race car, I picked up a genuine NOS BMW mortorsport big valve head, I got a lot of stuff from the USA billet rocker arms, 316 cam, light weight valves, springs, caps. I still have to source a o2 tii forged crank, & spec the forged pistons, but i do have a set of pauter rods S/H that wiegh less than half a standard rod.

My sister lices in the states so she bring the parts home at christmas.

But i do have a m10 engine converet to a 2.3 16v (in bits) using s14 parts that i might sell, and a set of slide throttle bodies as I cannot use them for my grp 1 race car as i am stuck with K-jet and a twin webber manifold.

Also in the USA Stahl sell a header kit (U-weld) that you may be able to modify as a staring pont

Jason

With the 2.3 conversion, I know the S14 is based on the M10, but I was under the impression that the water channels in the head did not line up with standard M10 bottom ends?

Is it possible to retain the 318i head, and just use the S14 crank and conrods to do the 2.3 conversion?

I know where to get an S14 with a destroyed head and perfect bottom end for next to nothing so I would be very interested if you could enlighten me on this. (anyone else who has heard about it being done, please share as well)

Also, I know that there is an unofficial 2.0L limit on inline 4s due to the stroke of an inline 4 exponentially increasing the magnitude of vertical vibration.

Porsche borrowed the balance shaft dampening method that Mitsubishi used to allow displacement above 2.0L on the 924 / 944, but as far as I am aware, the M10 / S14 does not employ this method, which is probably why the S14s shake themselves to bits over time.

Would a 2.3L 318i have a serious problem with vibration, or would it just give it character?

[Kedge]

Have a search on www.bimmerforums.com i've found quite a lot of info on there about using the M3 crank, IIRC the head will need some machine work to make it fit but it is do able.

[Toby_Unna]

Have a search on www.bimmerforums.com i've found quite a lot of info on there about using the M3 crank, IIRC the head will need some machine work to make it fit but it is do able.

if you don't stop muttering about m10s i'm going to come round and dump an m30 on your driveway in the night

[Kedge]

M10, M10, M10, M10, M10, M10 mmmmmmmmmmmmm

Might get in the way on the drive, in the engine bay would be better!

[dsio]

M30 = M10 that came out with an extra arm or leg?

I would have either of them though. The two M20 525i E34s are so much trouble that they need to be taken out the paddock and shot... Between slipping cam belts, head problems, and a cooling system that was designed without taking a little thing called gravity into consideration, its enough to turn me off E34s.

Chain driven, bullet proof, and built for abuse is how a BMW engine is meant to be

[Si316]

Update! ordered my new fuel tank today and afew other bits to finaly get this car finished! yes its still going!

still cant wait to drive the car again, just gutted ive got to re-learn how to drive a right wheel drive car again when its back after so much under powered front wheel drive wrongness!

[billgatese30]

woo hoo

when is its planned return date si?

[Si316]

i dunno mate, ive said its nearly ready so many times now ive lost count. hopefully another month or so, hopefully less but we'll see

[Si316]

UPDATE!

ive finaly got the wleding most of the way done on the rear arch now! we ran out of welding wire to finish off the inner arch but its all spot welded in place so its just a case of joining the dots!

heres afew pics.
this one made me cry abit seeing my cousin cop all this out!

first few pieces on the outer, all the inner done




abit of welding


abit of grinding


the final result ready for lead loading!


got the trailing arms ready aswell so there off to be shot blasted later in the week

[Si316]

Some more progress on this.

Got my new inner wheel arch through so that is being fitted instead of the plated rear inner arch that was being done. Its taking abit more time but at least its a proper job this way.

Rear beam and new tank painted up ready to go on in the week.





Whole rear axel has been polybushed and painted. This is also gonna be goin on soon.

[Andy335Touring]

Whats left to do Si ?

[Si316]

alright mate,

list of things left to do are,

brake lines
fuel lines
fit fuel pump
fit samco hoses
bolt on fuel tank
finish and bolt on rear axel
weld in new inner arch
prime engine
maybe start on a custom 4 branch but will run stock for now

then its time to get it all setup

[Si316]

Got abit more done this bank holiday weekend

The rear axel will be going on this week after ive waxoiled the freashly painted under side!

New wheel arch, the plating was ditched and a proper job done with a freash new inner arch!


under side


rear axel

[Si316]

more progress!!! the 316 is now back on the deck

the rear underside is now all waxoiled and bolted back together. just that rear arch to tidy up now. sort out the new filler pipe and then its time to just give the front a quick look over and change the bushes. then sort the engine out ready for its first start.






Not seen it from this view for a long long time

[Jhonno]

awesome!! nice choice of colour for the rear arms, liking it

[Andy335Touring]

Nice progress mate

Soon be time for some Mot and Tax

[maxfield]

[toby]

Very much looking forward to seeing this one going. I really hope you've got a video camera

[tim_s]

awesome project: right number of cylinders, twin 40s, spot on.

[Si316]

yeah should be ready for tax and test soon andy, keep your fingers crossed!

have a video camera and will defo be taking it when its on the rollers being setup.

Just finished the z3 2.8 short shift conversion, seriously good everyone needs to do it

[CaesarBob]

Glad to hear you're getting close Si. Thought you might've given up by now.

[Si316]

I have given up afew times because of uni and its almost been sold more times than i can remember, but thats all out of the way now.

[Si316]

Abit more progress now, seem to be taking big chunks out of what needs doing at the mo.

Samco hoses fitted, just need to do the one from the top of the thermostat to the head casting. samco didnt give me the correct amount of pipe so im waiting for another piece. I was on a roll aswell!

[Toby_Unna]

engine looks quality
what are you doing with the cam cover breather?

(as mine has just a pipe at the moment!)

[Si316]

Im going to just plumb it into a catch tank I think. I did have a little KnN filter that goes on the camcover, got fed up of cleaning oil off everything tho!

[gcorky]

very nice m8.........pays off in the end.

[Andy335Touring]

what are you doing with the cam cover breather?

(as mine has just a pipe at the moment!)

Thats supossed to be an MOT failure i think ?

I want to try to plumb my breather pipe back into my inlet so you could have my catch tank if you want ?

[Silverfang]

Just read the whole topic and hats off man, that's a true work of art

Hopefully my track car will be finished while i'm at uni so i can play with it when i finish! (Track car being german but not BMW Opel Manta!)

[Dan318-is]

what a chariot!

niec to see something innovative and different mate

well done!

[Si316]

You need to make up an adaptor on the air filter box and plumb the breather into that - it's a good idea for the engine to ingest it's own fumes. Even with a catch tank you will still smell the fumes inside the car and it stinks reeeeeaaal bad.

I'd imagine an air box from an old Alfa would do the trick and I can't imagine the carbs on those are spaced apart that differently.

Glad to see that rare 4.1 LSD is still nestling under the 316!

Which alfa would that be off mate?

The lsd has had new seals and a paint up and is under there ready, and yes its the very same block! I hope some of the soul of the rockingham taxi will shine through in my car

next step, find a ford edis-4 ignition system and order megajolt unit

[Si316]

UPDATE!

got quite abit done to the car now. Its got all of its fluids, brakes and polybushes now.

all that it needs now is:
the facet fuel pump fitting with the new fuel lines
Engine electrics sorting and tidying up
paint in afew places where its been welded on the rear arches

heres afew recent pics

[Jhonno]

get longer trumpets on there and decent filters (NOT sock!)

Looking good tho dude, looking forward to seeing this sometime. Got a bit of a sickness for old skool 8v lumps on a lumpy cam and carbs kicking the bigger boys asses

[Si316]

Im gonna get some longer trumpets once I track down a golf mk2 servo so they'll clear. for now tho its 40mm ones and socks. whats wrong with filter socks? ive heard they give the best flow