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

[Graham]

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

Yeah JB weld is good, I used to to build up the port floor on my xflow intake manifold. I must admit I did cheat slightly and fitted some roll pins to give it something to grip!

for some added security i did have it in mind to drive a couple of small self tappers into the floor of the manifold leaving there heads sticking up

I could do with building up in my (steel) intake mani

with a steel manifold i would either use braze or solder

[RWD fords rule]

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

I think JB weld will work fine if you make planty of channels in the alloy manifold, if you are looking for something better then I beleive this would make an excellent port filler for alloy manfiolds and alloy heads, would take a bit of time to warm up a head but it would not weaken the casting in any way and it looks like this stuff bonds really well to the base metal.

[Group4_Mark2]

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

Looks like a nice product and would produce a very strong filler material.. It requires slightly less than 400 degrees celcius to get it to bond to the base material so should not cause too many problems. If the head or manifold was bolted up to either a head or block then the risk of warpage would not be too great.

[Graham]

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

blimey that looks like good stuff! i can think of lots of uses for it inclueding a bmw head with several holes in it!!!!!!!!!!!!!!

in the end i decided not to fill anything and just blended everything together, not quite finished in this pic but nearly there, having thought about it the std s14 has quite a sharp turn on the short side, which doesnt seem to hurt it, especially when you think the standard road going 2.0 version still pumps out over 190bhp!

the angle of the port means effectively its opening is slash cut so the area of its opening is much bigger than the port itself and as the area of the inlet manifold is greater than the area of the port i dont think it will flow any differently to when it was on the flowbench, only one way to find out...........................

[caprimentle]

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

that stuff looks phenomenal, how can we get some of that posted to our doors???????

[Group4_Mark2]

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

This is a web site. They post internationally. If you go through the shopping cart it adds the postage costs.

http://www.aluminumrepair.com/shopping/shopdisplayproducts.asp

$65.00 for 1lb which is not too bad plus postage.

A few places list it on Ebay also

http://cgi.ebay.com.au/10-pc-18-Aluminum-Repair-Brazing-Rods-HTS-2000-/320576906577?pt=LH_DefaultDomain_0&hash=item4aa3df6551

Tom

[alladdin]

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

variations of that have been out years, i have some in by toolbox from RS . i think it was called technoweld ? dave walker has used it in a mag article once might even have beenas far back as in ccc mag the wire brush has to be stainless and the stuff i have needs to be "agitated" with a sharp ss rod on the surface.

[Group4_Mark2]

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

It may all be marketing blurb but they claim on the web site to be much better than technoweld. Seemingly it is a much more complicated alloy and does not need the special stainless brush. Would be interesting to see how well it works. How well did technoweld work for you?

[alladdin]

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

never needed it

im sure the passage of time will have seen improvements tho so it may well be as easy as shown

[Graham]

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

i've used technoweld, it does work, just! but in my view its not actually very good

[Dan]

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

I think JB weld will work fine if you make planty of channels in the alloy manifold, if you are looking for something better then I beleive this would make an excellent port filler for alloy manfiolds and alloy heads, would take a bit of time to warm up a head but it would not weaken the casting in any way and it looks like this stuff bonds really well to the base metal.

i used this stuff at uni, to put together a tubed frame for my major project, it is very very easy stuff to use, i did most of the work with a normal blowtorch although using a proper oxy lamp is much faster... on a test piece i did i did manage to get the welded bit to crack but it took far more force than i was ever going to use, it is however much harder to grind back than normal alu. i bought it from some school educational place, cant remember what it was called though... i have always wondered though as its melting point is much lower than normal alu would it not just melt if you used it in a cylinder head? would have thought it would be excellent for fixing an inlet if you went through though.

tis going to be an awesome engine for sure. and those pistons are ridiculous, i think the ones in the Ferrari store window display (just up the road from my office) are taller than that

[Graham]

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

depends where you use it i guess, but its probably like the case of a firebox/boiler on a steam loco, the firebox gets hot enough to melt the steel its made of, the reason it doesnt melt is all the water on the outside of the firebox absorbing the heat

[caprimentle]

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

depends where you use it i guess, but its probably like the case of a firebox/boiler on a steam loco, the firebox gets hot enough to melt the steel its made of, the reason it doesnt melt is all the water on the outside of the firebox absorbing the heat

makes perfectly good sense.

[Group4_Mark2]

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

i have always wondered though as its melting point is much lower than normal alu would it not just melt if you used it in a cylinder head?

I would think that you would be in a lot of trouble if your cylinder head was at around 400 degrees celcius anyhow. Melting a bit of weld would be the least of your worries

[Graham]

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

blocks now bored t suit the pistons so the capacity is now 2598.9cc




as you can see instead of being 3mm out the block its as predicted 2mm down the bore, i've had a couple of goes at working out how the piston shape effects the CR, by bureetting the volume above the piston with it a little way down the bore, i've got different results each time, possible because i got a bit of fluid leakage around the piston, will have to try again with rings fitted, eitherway though it seems the intruder volume isnt as great as the valve cutouts so compaired to a flat piston it actually drops the compression a bit, as it stands the C/R is under 10:1, so the blocks gone off again to have 40 thou skimmed off it, using a thin headgasket will take another 40 thou out the volume and should give me around 12.5:1 depending on the exact cc of the head once thats finished, as long as i have between about 12 and 13 to one i'll be happy, with s14 bits being hard to come by at afforadable prices i dont want to skim any more off anything than i really have to