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

[Graham]

Re: worlds most powerfull bmw 316?

been back in the garage again and have now blended the two adapter plates together

[Graham]

Re: worlds most powerfull bmw 316?

got a suprise today! i bolted the manifold adapters on, dropped the head on the block which is still in the car, and the turbo fitted lovely on the manifold which wasnt supposed to happen as i knew it didnt have room without a riser to lift it up off the manifold a fair way.

calling my self a i then fitted the cam carrier thinking that was why the turbo fitted somewhere i knew it didnt have room,

still the turbo fitted

then i remember the water rail which i'd unbolted from teh head and had forgotten all about, unlike most engines the water take off doesnt come off the end of the head but out 4 outlets spaced out allong the head like a BDA, the water rail was why i had to lift the turbo, so at that point i had a change of plan, rather than lift the turbo and add weight and complication to the turbo instalation i've decided to re engineer the water rail.

[david_white]

Re: worlds most powerfull bmw 316?

Looks like a nice fit there Graham. As you say better to modify the water rail than lift the heavy turbo higher.

Is there a lot else to do to the car?

[Graham]

Re: worlds most powerfull bmw 316?

Looks like a nice fit there Graham. As you say better to modify the water rail than lift the heavy turbo higher.

Is there a lot else to do to the car?

yeah the turbo looks quite at home, its not obvious its bolted to a ford manifold,

apart from replumbing the water, i've got to unmodify the intercooler! its an rs500 one which i altered to suit the turbo location last year, so i've now got to put it back to sierra mode to suit the new turbo location, the exhaust needs to be remade, i think this time i might be able to get it to run past the steering colume which will save sereral feet of pipe, i'm also going to make the exhaust 0.5 inch bigger upto where it splits in two,

not least of all is to rebuild the engine, and get the engine runing on mr walkers latest ecu software with EGT correction.

no plans for any modifications to the car itself apart from the 9x17 front wheels and necasary arch mods to cover them

[andypipe]

Re: worlds most powerfull bmw 316?

But is it gonna be done in time?

[Graham]

Re: worlds most powerfull bmw 316?

never yet missed the start of the season..................

although i've found having a girl friend is severely slowing some things down...................

other things are definatly speeding up though............

[Dave]

Re: worlds most powerfull bmw 316?

Of all the handicap rules I've seen, they have never included a woman. Strange as they certainly slow you down.
Nice work Graham, look forward to seeing you racing somewhere this year.

[Graham]

Re: worlds most powerfull bmw 316?

cheers dave,

i've been busy again and done a bit of porting on the exhaust manifold, and made up a 10mm spacer plate to lift the turbo a bit, and modifing bits 2wd sierra down pipe and some exhaust tube to make a new down pipe fitting for the turbo, as i had to weld up the old one several times last year, sorry no pics at the moment my computers died, so i've blagged a few mins on someone elses

[Graham]

Re: worlds most powerfull bmw 316?

using the old hot rodders trick of using a blow lamp to see which bits of the ports trip flow up, i've done more porting on the exhaust manifold and appear to of vastly reduced the amount of gasses from nos 3,4 cylinders trying to back flow into the other cylinders

[Graham]

Re: worlds most powerfull bmw 316?

it turned out i'd warped the cylinder head by a fairly massive 0.014" so it was refaced, i also had to have the top sde where the cam carrier bolts to refaced so as not to snap the cams in half

the vlave seats were all cut and the shortened to get the valves cleances back in the correct tappet range, here the head ready for reassembly after a trail check on valve clearances

[Graham]

Re: worlds most powerfull bmw 316?

as the head gasket gave out big time last year despite an o ringed block i looked for something uprated,

apparently you can get uprated "std" type gaskets, butthey cost a fortune and according to mosley motorsport who prepare and race beemers they are no better than teh std ones

aparently cometic do a multi shim steel gasket, but i got nowhere with them, the guys in the USA werent overly headfull and their Uk distributor didnt want to know

so i went to mike at ferriday engineering who do know through teh work he's done with my mates race car and he has made me a special aluminium/copper gasket, on an experimental basis, in that it might or might not work! but at the moment it seems the best option, its that or std ones, and its such a bitch to get the head off this engine no way do i want to risk using std gaskets again.

[Graham]

Re: worlds most powerfull bmw 316?

mikes special gasket is much thinner than a std gasket that along with machining so much off the head caused an unexpected problem, i when i worked out the compression ratio on the engine it had lept from 7.8:1 upto 9.2:1

sticking the pistons in the lathe i machined them down, as far as i dare, compression is now 8.5:1 a bit higher than i would of liked, but seeing as the engine only runs modest boost it will probably be ok pray: pray: pray:

rest of the engine is fine, merely requiring a hone and a new set of rings, the crank was perfect and even the old bearings went back in, clutch was practically unworn too,

[Graham]

Re: worlds most powerfull bmw 316?

the water rail has now been modified, the water now exits from the other end of the rail, which means i've got to plumb it right round the engine bay, but it does much simplify the turbo installation.

the intercooler has been modified too, its a sierra RS500 one which had the intake pipe cut off and moved to the side so it would work with last years turbo instalation, the trouble is this years one meant the pipe had to go back to where it started out , we've also added some straps to locate the intercooler and radiator better, last years quick fix of big fat cable ties ended up permant!!!

[Graham]

Re: worlds most powerfull bmw 316?

due to tyre supply issues i decide to run the same 17x9 wheels all the way round this year, so ordered a couple more wheels, compomotive are obviously doing good deals at the moment because when my 9 inch wheels turned up and we fitted them they turned out to be 9.5 wide with the extra width on the outside so they fit the rear a treat, but will be way too wide for the front, although they will come in handy if i end up going up a size ofn rear tyres from the current 235 to 265, although that isnt very likely to happen as you cant get cheap 265's

these wheels do look the dogs on the rear though

[Graham]

Re: worlds most powerfull bmw 316?

finally for now, one of last years rear wheels in its new front position, as you can see the wheel arch is going to need a few mods!!!