1st Real Project: E30 BMW 4.0 V8
Discussion
Cheers for the comments folks!
To answer some questions, yes the BMW V8 would have been the matter of a weekend to fit. However getting power out of them is an expensive proposition when compared to the 1UZFE which was chosen instead. Additionally, a manual gearbox on the BMW V8 would have cost much more, even taking the throw out bearing, spacer plate and R154 gearbox in to consideration. As I am poor by anyones standards, that wasnt an option.
As for the question regarding the billets, the ally for the gearbox spacer plate was £80 for 2. The steel for the bend dies was much less.
To answer some questions, yes the BMW V8 would have been the matter of a weekend to fit. However getting power out of them is an expensive proposition when compared to the 1UZFE which was chosen instead. Additionally, a manual gearbox on the BMW V8 would have cost much more, even taking the throw out bearing, spacer plate and R154 gearbox in to consideration. As I am poor by anyones standards, that wasnt an option.
As for the question regarding the billets, the ally for the gearbox spacer plate was £80 for 2. The steel for the bend dies was much less.
I Am Milk said:
Why is this only your first real project?
Well to be honest, the 1st project undertaken was a very basic space framed off road go kart. No suspension, air cooled 350cc bike engine, very simple steering and a field!Needless to say, it was spine destroying. However it did allow some serious welding and fabrication practice, which in my opinion is the best way to learn.
The 2nd project was another off road buggy/kart, some pics of which are in the bmw build thread somewhere. Learing from the mistakes of MK1 buggy thing, it was decided that MK2 would need to have decent suspension, so why not go the whole hog and have inboard coils with push/pull rods and rockers! Additionally the steering on MK1 was terrible. It was either straight line, or backwards. On MK2 a rover metro steering rack was chopped and welded to make it central steer, add a folk lift steering nob and the result is epic!
I suppose having a CBR1000 engine helps too lol.
the boy has some skills!!Right, manifold time...
We only really had time to work on saturday, so the manifolds are only around half done, but something is better than nothing!
We started off with our laser cut flanges and some cast iron stainless steel bends, below:
We then sourced some larger diameter stainless tube to act as a log/collector due to space issues. With it being a larger diameter, we needed a nice way to mate it to the cast bends, so we chopped it along the axis:
and then some careful tapping (read, hit it with a hammer) to get this:
Do the same on the other side and offer up to the flange:
Then hole saw the centre ports:
Tack it all together and offer it up to the engine:
It all fits, so weld all of the cuts and joins etc:
Granted it needs some finishing to look nice (please dont judge me on this picture):
So its effectively there or there abouts!
More next week I hope.
We only really had time to work on saturday, so the manifolds are only around half done, but something is better than nothing!
We started off with our laser cut flanges and some cast iron stainless steel bends, below:
We then sourced some larger diameter stainless tube to act as a log/collector due to space issues. With it being a larger diameter, we needed a nice way to mate it to the cast bends, so we chopped it along the axis:
and then some careful tapping (read, hit it with a hammer) to get this:
Do the same on the other side and offer up to the flange:
Then hole saw the centre ports:
Tack it all together and offer it up to the engine:
It all fits, so weld all of the cuts and joins etc:
Granted it needs some finishing to look nice (please dont judge me on this picture):
So its effectively there or there abouts!
More next week I hope.
jamiebae said:
Cool project!
Is the manifold designed to work well or just built to fit in the space available? I haven't seen one like that before.
Its simply a matter of space to be honest. I would much rather have nice individual equal length runners, but its just never going to happen. I figure that these headers will loose some power in N/A form, but with some sort of blower that should be more than offset. Is the manifold designed to work well or just built to fit in the space available? I haven't seen one like that before.
If they turn out to be a complete farce once its running properly then we shall have to bite the bullet and pay someone to make some, but at the minute that goes against the grain so to speak.
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