A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

[Graham]

Re: worlds most powerfull bmw 316?

cheers gary,

shame about the damage, but as far as john and i were concerned it was a racing incident, in an awesome race, i didnt make a do or die punt at a gap that wasnt there and he didnt shut the door on me,

that move at paddock well i almost made it stick, it was difficult to judge exactly when to brake and turn in from mid circuit alongside john rather than at the circuits edge like i had done every other lap,

as i said in an earlier post i was pleased that i had the confidence in the car to fight straight back at john rather than let him go.

although the problem is unique to the car at lydden i really need to find a away to gain grip and traction out the elbow because thats where i was very vunerable, but without making the car even more oversteery, a new set of plates in the LSD might help, but i think the issue is a bit deeper than that, i might try raising the rear ride height a bit and stiffening the front dampers to limit the weight transfer.

still cant believe i could out drag john UP the hill though and how little the thundersaloon pulled away

[tom burgess]

Re: worlds most powerfull bmw 316?

well done graham i was watching you all the way.it was good to see the car finish a race in such a high posistion.and it nearly held together other than dropping a few of its fluids that race with you and john was excellent and you did very well to get that position.shame about the battle scars but hey thats racing

[Graham]

Re: worlds most powerfull bmw 316?

cheers tom, now i've seen rogers escort in a race ( dunno how it did though) will we see you out in it against alex and andy ????

[tom burgess]

Re: worlds most powerfull bmw 316?

im definitely not allowed to do that yet .one day maybepray: .it came 4th in the race which aint bad.the cars that beat him were the ex seat cupra cup car,a tiger of some sort and the ex touring car nissan primera so not bad for its first ever race.the car did get a battle scar though.but thats racing

[FOSSIE]

Re: worlds most powerfull bmw 316?

And you boys take the piss out of us rally types for throwing cars at trees!

Anyone looking at these pictures would think circuit racing is a full-contact sport.

Just kidding... Well done anyway - and well done for getting the car out in time Graham - I hadn't read your thread for a few days but was very surprised to read today that it actually made the race!

So, maybe a daft question, but what are the benefits of this new turbo setup then? They must be pretty big if its worth sacrificing 65bhp?

[Graham]

Re: worlds most powerfull bmw 316?

So, maybe a daft question, but what are the benefits of this new turbo setup then? They must be pretty big if its worth sacrificing 65bhp?

cheers Fossie

hope fully the new turbo set up will produce reliability i had far too many dnf's last year or started races with stupidly big power and finished them with stupidly low power.

the fabricated manifold wasnt physically strong enough to cope with the weight/heat/expansion caused by the turbo

[alex 66]

Re: worlds most powerfull bmw 316?

well done graham , didn't actually get to see your races but the boys said they were entertaining ,

[mattb]

Re: worlds most powerfull bmw 316?

really cool car bud, i saved a pic of this ages ago, I bet it goes well too

cheers
Matt

[david_white]

Re: worlds most powerfull bmw 316?

Hows the repairs going Graham?

[Graham]

Re: worlds most powerfull bmw 316?

i've repaired the arches and changed the bent rim, fitted a new spoiler, and faired in the rad and intercooler as i noticed the engine ran cooler without the spoiler.

also got a rolling road session booked may 1st to try and ring a few more gee gee's out of the motor

[david_white]

Re: worlds most powerfull bmw 316?

Well done Graham, spoiler looks good too

Lets hope you can claw back a little bit of that power you lost too

[Doug@g19engineering]

Re: worlds most powerfull bmw 316?

Just read through this whole thread and there is so many similarities between your problems and the ones we encountered when I helped a friend turbo his BMW S14 engine.

He made a new water rail because the original got in the way of the manifold/turbo.

We warped the head as badly as you did whilst we were mapping it. The radiator sprung a leak and neither of us were paying attention to the temp whilst doing WOT mapping.

We hated taking the head off so many times. It’s a real pain in the arse with that separate cam carrier.

We couldn’t reach all the nuts to tighten the turbo onto its manifold flange. A special cut down spanner did the trick in the end.

Our manifold cracked. We solved it with a turbo support and it was fine afterwards.

It did however make great power. 330bhp at 12 psi. with a 9.6 CR. The heads are a great piece of work and I am sure that is why that make such good power.

My mate has recently rebuilt the engine using forged pistons and a much lower CR. He also has a GT30 turbo and plans to mount it all in an E21. He is expecting 450 bhp.

Which brings me onto my last point. He needs a new manifold as he sold the old turbo kit to some guy in Ireland.

I will probably get charged with fabricating this. I was planning on constructing it from 3mm wall schedule 10 stainless steel weld elbows which I will TIG up.
I just wondered if we should join forces on some development! I’m sure we can come up with something in thick wall stainless that won’t crack and will get you your 65bhp back!

[Graham]

Re: worlds most powerfull bmw 316?

We couldn’t reach all the nuts to tighten the turbo onto its manifold flange. A special cut down spanner did the trick in the end.

Our manifold cracked. We solved it with a turbo support and it was fine afterwards.

It did however make great power. 330bhp at 12 psi. with a 9.6 CR. The heads are a great piece of work and I am sure that is why that make such good power.

My mate has recently rebuilt the engine using forged pistons and a much lower CR. He also has a GT30 turbo and plans to mount it all in an E21. He is expecting 450 bhp.

Which brings me onto my last point. He needs a new manifold as he sold the old turbo kit to some guy in Ireland.

I will probably get charged with fabricating this. I was planning on constructing it from 3mm wall schedule 10 stainless steel weld elbows which I will TIG up.
I just wondered if we should join forces on some development! I’m sure we can come up with something in thick wall stainless that won’t crack and will get you your 65bhp back!

very interesting,

you and me both with the cut down spanner, i have now worked out how to re tighten all the turbo mounting bolts as long as the engine is stone cold!!!!

i couldnt agree more on your remark on the heads being good hense big power on low boost, but clearly as i have found a nice tubular exhaust manifold helps too, my m10 turbo had a tubular manifold and that made good power and excellent torque again on quite low boost.

i've no doubt that your mate could achive 450bhp seeing as used to have 465bhp, 410lbft on a mere 13lb boost.

my origonal manifold was made from a cut down upside down Std s14 exhaust manifold, although that did crack, the main cracks appeared in the bits i fabricated that were welded to it, i believe that the crack that appeared in the orgoinal part of the manifold was due all the additional material welded to the manifold making it too rigid to allow any expansion, the cracks in the upper part i think were purely down to heat and expansion, im now thinking along the lines of mounting the turbo on a nice thick plate bolted to the cam cover so that the manifold doesnt take any of the weight of the turbo, and i wont have to resort to welding big lumps of material to the manifold to carry the weight of the turbo.

not sure were your going to mount the turbo with your manifold, but if its a case of up nice and high so i can still route the exhaust round the back of the head i would be very interested in a bit of colaboration

[Graham]

Re: worlds most powerfull bmw 316?

just realised i havnt posted any pics of the completed 2007 instalation

[Doug@g19engineering]

Re: worlds most powerfull bmw 316?

Graham,

Here is a picture of the install in martins car.



As you can see the turbo was mounted up high and this is prob where it will be in the new car. As the car was a left hooker we could run the turbo straight down by the chassis rail.

Here is a picture of the sort of turbo support i have run on alot of cars with good sucess.