gabs88gxl

iTrader: (3)

So I'm pretty sure that there has been ALOT TONs of people asking about this. I know it has been done numerous times. But I recently went to the dark side an have my half bridge engine just sitting there. I can't just let me hard work that i built sit there an do nothing so. Unlike the other v8 dudes I still love the rotary along with the v8. I'm a gear head what can I say. But my biggest issue I want to know is mounting. Are they the same as the second gen. Or are they in a different location.

Also the transmission's can i keep the 1st gen trans an use a N/A flywheel. I know on second gens you can just change flywheels with your series, an run a n/a trans. Like have a s5 turbo II swap a Non turbo S5 flywheel an it will work in the na bell housing. Yes i know its not the strongest transmission. It will get me around for now, and i kinda sold my turbo trans lol.

Wiring I am not to worried about . I do still have my megasquirt from the old set up with a complete harness an sensor still on the HBP engine. But let me know guys and girls what all is needed to put it into a Fb engine bay. You can hate on my to for going to the dark side. But I'm still in the rotary game.

82transam

iTrader: (18)

The FB engine mount is off of the front cover. Since you're not concerned with an S5 omp, all you really need is a FB front cover (any will work although the GSL-SE uses a 4 line omp like the FC, unlike the 12a covers 2 line omp, not sure if that matters to you or not) and a GSL-SE oil pan.

If the FB you're swapping into is a GSL-SE then it will already have a crossmember made for a 13b, if its a 12a car you just need to slot the motor mount bracket (the part that bolts to the front cover) or buy the Racing beat part. Or get the crossmember out of a GSL-SE (hard to find and requires taking the whole front suspension apart, not nessesarily a bad thing, but it is more work)

As for transmissions, the FB trans will bolt up to any FC engine, you just need to make sure you use the right clutch (NA for a NA trans, Turbo for a Turbo etc) Just make sure you have the right counterweight for the eninge you are using (sounds like you're already set there)

One quick note, if you choose to go with an FC transmission (either NA or T2) the shifter will sit 30mm father back and not line up with the interior correctly in the FB. For a NA FC trans you can just put the whole FB tailshaft housing on and be done with it, for a T2 trans typically we take the shifter tower off a FB trans, and mod the shift rod to work with it. Also the FC trans mount is different and will require a bit of custom work (again if T2, the NA FC trans just gets the FB tail shaft housing and thats all)

Hope that gets you started!

gabs88gxl

iTrader: (3)

Sweet thanks man. I started thinking last night after this post about getting a GSL-SE cause i already knew they had the efi 13b. But all the other stuff you mentioned helps. I've never worked on a 1gen. Thats kinda what I am so lost. But I haven't got the car yet so I am still looking for one. Im going to try an find a gsl-se

82transam

iTrader: (18)

The GSL-SE is definatly the easiest one to start with since it has the 13b crossmember and FI ready fuel tank (not to mention the front cover and oil pan, assuming the engine is still in it) but it's not overly complicated to do on a Non Se either... If going the non SE route (like mine) your biggest challenge will be the fuel system. A SE tank will be a bolt in solution or if you're up for a bit of welding you can weld the slosh cup and fuel pump mounting ring from a FC tank into a FB tank and get a nice clean in tank setup. I went that route and love it!
Just as a side note from someone who's owned and worked on both FB's and FC's, It think you'll be in for a nice surprise how much easier FB's are to work on, but thats just my opinion

Take-7

Good to see you are finally typing right, Gabs. Thank you. Don't want to jack the thread, but this question is relevant to the thread, and it's better than me starting a new one. Can the 13b from a second gen fit a carb from a first gen 13b?

PercentSevenC

Well, first off, first-gen RX-7 13Bs didn't have carbs. Secondly, no, a Hitachi carb from an old-school 4-port 13B won't fit an NA FC 13B because... 4-port. It won't fit a TII motor, either, because the manifold bolt pattern is different. I'm not sure if the ports line up, either.

82transam

iTrader: (18)

^What he said, nothing will bolt up. It would need at least some custom work, at which point you would need to wonder if its worth the effort....

gabs88gxl

iTrader: (3)

Oh sweet. I'll have to look a little more into this. I really wanna get it done cause I do love the rotary as well as my v8. But I can't just leave my pride an joy on the side of my house. I spent a lot of money time blood sweat an tears on that engine. Not to mention the week of porting I did on it. But I have been looking around the area. I have found a few but nothin that really jumped out to me. There is a few that have no engine but they look rough. I just think it would be sweet to put a 13bt into a FB.

gabs88gxl

iTrader: (3)

OK. So I have been looking around town and I think I might have found one. It's a 84 gsl. I'm pretty sure those are 12a am I right. Does anyone know if there is a company that makes the crossmember.

82transam

iTrader: (18)

GSL is 12a yes. Either find the front crossmember from a GSL-SE, or get the front engine bracket that Racing Beat makes to put a 13b into a 12a car. If you don't want to do either of those options you can always take the 12a bracket and slot the holes so that it moves it 20mm forward.

Here's the part I'm talking about: http://www.racingbeat.com/RX7-1975-1...nal/11832.html