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

[exboyracer]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

That's handy!

[Graham]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

not so handy was fardon forgetting to counter bore the nose of the crank to match the pattern crank i gave them!




i only realise when i went to fit the drysump drive gear, the bolt is a far in as it goes



i've resolved it by turn up up a spacer, not happy though, fortunatly i dont think the bolt sticking out a mile will give me any engine bay problems other than in the event of a bump its that much closer to the rad, one plus point though i'll be able to turn teh crank with any old spanner rather than having to use a socket thats been turned down to go inside the pulley



right crank at tdc ready for the head - i hope, unusually no buggering around checking valve piston clearances needed

[Group4_Mark2]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

not so handy was fardon forgetting to counter bore the nose of the crank to match the pattern crank i gave them!

You might even have a slightly stronger crank with less drilled out of the centre so not all bad.

[exboyracer]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Farndon off your christmas card list then Graham?

[Oldracer]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Can't you just use a shorter bolt to hold the pulley on?

[RWD fords rule]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Yes, why not use a shorter bolt, even if it was just 1" shorter and a shorter spacer to suit

Good to hear it's all coming together for you, is that a paper type gasket and solid copper rings?

[Graham]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Can't you just use a shorter bolt to hold the pulley on?

i could if i had one but m20x1.25 bolts arnt exactly common!

is that a paper type gasket and solid copper rings?

nearly its an aluminium gasket with a thin layer of silicon and solid copper fire ring,

this ones 0.6mm thick but i used a thicker 1mm version on the turbo and never had an issue where an o ringed block had previously failed me

[caprimentle]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

i could if i had one but m20x1.25 bolts arnt exactly common!

how long do you need it graham, i have quite a few thousand bolts, i'll see if i've got one

[caprimentle]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

are you sure about the pitch of the bolt, my book is showing that an m20 fine thread has a pitch of 1.50?

[Graham]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

are you sure about the pitch of the bolt, my book is showing that an m20 fine thread has a pitch of 1.50?

its possible is 1.5 as i didnt actually measure it, but bmw do use some odd threads on this is engine, its certainly fine considering how bloody big and long the bolt is, but dont worry the spacer will be ok thanks for the offer anyway, it was just annoying thats all

[caprimentle]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

well the offers always their, i'm not short of a bolt or two so if you get round to checking the thread let me know

[david_white]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Looking more like an engine now, should be pretty close by the end of the weekend.

[Graham]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

it gets more complete!




head and cam carrier fitted



as the engines difficult to turn over smoothly slowly i opted not to time the cams with the degree method, instead lift at tdc,
simply a case of getting the crank to exact tdc then turning the cams to get required lift and then fit the sprockets, inlet first 0.180" had a bit of a result when fitting the sprocket the holes didnt quite line up but did after i drilled the bolt holes out 2mm oversize and replaced the bmw bolts with some flanged bolts, exhaust was even simpler i set that to the required 0.140 lift and the bolt holes lined up

[RWD fords rule]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

Sounds like a really good head gasket to use, I have always thought a combination of any alloy plate and copper fire rings would work best, you could possibly use a gasket say 3 or 4mm thick in a stroked engine, then run the top piston ring up to the top of the bore at tdc and gain about 3mm on the rod length.

What sort of money do they charge for an alloy/copper gasket like yours and is it re useable?

Regards
Jason

[Graham]

Re: A race bmw 316, 240bhp Atmo M10 now going s14 power!

they are just under £170 all in with vat and delivery , mike says they can be reused although i never have but i recon he's right, judging by the condition of them when i've pulled an engine apart again, if it wasnt for the fact i use them on an engine thats a complete pain in arse to remove the head from i might of reused one, the other plus point in my case is they dont need retorqueing after a seasons use i pulled the cams and carrier off the turbo motor and put a torque wrench on the bolts only to find it was a waste of time they were as tight as the day i fitted them.

he will only make them in 1 or 0.6mm saying any thicker and they wont seal properly, if you want more than 1mm then use a decomp plate.