4 port to 6 port - doing it
05-12-2016, 09:41 AM
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4 port to 6 port - doing it
Hoping someone familiar with this scenario with this can weigh in
Somehow I ended up with a 4 port engine in an 04 6sp. Hurray Craigslist!
As far as I can tell everything BUT the engine is original and set up for a 6 port engine (its got the instrument cluster, 2 oil coolers, the 6sp mt, and my ECM is flashed for a 6 port). Somehow, with all of that, it started up fine with the 4 port in there. Can't drive it at all (clutch still a work in progress), but it sounded/idled/revved up fine (new to rotarys, so my 'fine' is noob but it was super quiet and smooth so I'm assuming that is a good sign). Restarted easily after getting it to temp, so I'm assuming the compression can't be too awful as well.
Anyway, I've got a SEPARATE 6port engine (Hurray Craigslist x2!). I'm pulling the LIM, UIM, and everything fuel off of it and sticking it onto the engine in the car once I strip off the LIM/UIM/etc.
Assuming I'm not mistaken on the above info, do I need anything else to make this swap happen? Is the fuel pump the same between the two versions? Any other bits I should be scouring the interwebs for?
Thanks!
Somehow I ended up with a 4 port engine in an 04 6sp. Hurray Craigslist!
As far as I can tell everything BUT the engine is original and set up for a 6 port engine (its got the instrument cluster, 2 oil coolers, the 6sp mt, and my ECM is flashed for a 6 port). Somehow, with all of that, it started up fine with the 4 port in there. Can't drive it at all (clutch still a work in progress), but it sounded/idled/revved up fine (new to rotarys, so my 'fine' is noob but it was super quiet and smooth so I'm assuming that is a good sign). Restarted easily after getting it to temp, so I'm assuming the compression can't be too awful as well.
Anyway, I've got a SEPARATE 6port engine (Hurray Craigslist x2!). I'm pulling the LIM, UIM, and everything fuel off of it and sticking it onto the engine in the car once I strip off the LIM/UIM/etc.
Assuming I'm not mistaken on the above info, do I need anything else to make this swap happen? Is the fuel pump the same between the two versions? Any other bits I should be scouring the interwebs for?
Thanks!
05-12-2016, 11:49 AM
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Hmmmmmmm I might take you up on that advice.. thought changing out the intake manifolds would be enough. But looking at pictures of the blocks, looks like the 6 port manifold won't be matching up right with the block
Maybe I'll just get the 4 port running and sell the 'franken RX8' as a collector item
Just a thought: is reving the 4 port past its original redline to the 6 port redline going to do naughty things to it?
Maybe I'll just get the 4 port running and sell the 'franken RX8' as a collector item
Just a thought: is reving the 4 port past its original redline to the 6 port redline going to do naughty things to it?
05-12-2016, 12:07 PM
#5
Hmmmmmmm I might take you up on that advice.. thought changing out the intake manifolds would be enough. But looking at pictures of the blocks, looks like the 6 port manifold won't be matching up right with the block
Maybe I'll just get the 4 port running and sell the 'franken RX8' as a collector item
Just a thought: is reving the 4 port past its original redline to the 6 port redline going to do naughty things to it?
Maybe I'll just get the 4 port running and sell the 'franken RX8' as a collector item
Just a thought: is reving the 4 port past its original redline to the 6 port redline going to do naughty things to it?
05-13-2016, 08:11 AM
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