28-12-2013, 08:55 AM
There's guys out there making 1200hp+ on log Manifolds... There's not much point IMHO in going for equal length and I just never trust tubular Manifolds, they always crack unless you spend an insane amount of money on them...
As piggy said, check out SteedSpeed - that's the sort of idea I'd be going for, two halves of machined steel and then just welded together, no issues with cracking, strong, you know what the internals look like... Perfect, there's people making insane amounts of power with them and they aren't massively expensive and with some work you could design one yourself, no point in worrying about primary lengths, the cam profile of a diesel and the fact they don't spin that fast means that it has little effect, especially on the exhaust side..
That's my opinion anyway...
As piggy said, check out SteedSpeed - that's the sort of idea I'd be going for, two halves of machined steel and then just welded together, no issues with cracking, strong, you know what the internals look like... Perfect, there's people making insane amounts of power with them and they aren't massively expensive and with some work you could design one yourself, no point in worrying about primary lengths, the cam profile of a diesel and the fact they don't spin that fast means that it has little effect, especially on the exhaust side..
That's my opinion anyway...
