top mount!!! its been shown that the longer runner lengths aid in producing more hp. plus it leaves alot of space for the downpipe. it might not work so well with your internal gate though (space and clocking) check out what peakboost did on their version 1 mani. it an interesting version of a ramhorn. its supposed to work alittle better then the traditional ram. :dunno: i would make something along those lines unless you go with a bigger turbo. then i would think about a top mount and huge downpipe. what kinda numbers are you gonna look to make?
diffrent manifold designs make turbo spool diffrent.
while a log mani will spool it the fastest the ramhorn and the topmount will make more power but you will have to deal with a bit more lag.
that turbo you got now should spool quickly either way. i know your not looking to make huge numbers so i would say go with a ramhorn that hybrid is selling or try jdms1eeper on honda-tech. he does good custom work and is pretty cheap.
although you are internally gated like toby said a topmount may be a bit of a pain. thats up to you. my best idea would be to check out hybrids ones they are selling and get one of them. they look to be good and the price is decent as well.
ps. i hope we can get your car running by this weekend. i wanna see this thing run for once :hsdance:
Does anyone have any links of “back to back” runs showing X manifold outperforms Y manifold? I have a hard time thinking there would be a large difference.
I’ve been going through the same questions on building a manifold and have come across this information from a seasoned manifold builder:
If you are going to go through the troubl eof making a custom manfold, make the runners equal length and with a pulsed firing sequence.
Equal length is easy enought o figure out, but setting it up for a pulsed firing sequence could be a bit tricky. What that means is at the collector, the firing order should make a cylic pattern at the collector.
If your firing order is 1-3-4-2, then a pulsed firing sequence design would have the four runners coming together something like this: