Mileage
 

Which is the best engine to swap to an FD out of the S5, the REW and the 20b overall? Including mileage and increased power without risking damaging the engine.

The REW is the only engine that bolts right in to the FD, so that in most cases is the "best" choice.

Unless you are talking about swapping these into an S5? It's hard to say because your sentence structure is weird.

Neither the 20B nor the REW bolt into an S5.

What are your goals with the car? What are your power goals? What is your budget? How will you use the car? Have you any experience in fabrication?

I'm sorry. I had a huge post written out and it just seemed like I was blabbing about unimportant stuff so I deleted it and just went with that post. I have about 20 grand CAD to spend. With that, I have to buy the car also. I want an FD.

I understand the S5 doesn't exactly fit into the bay of an FD but heard it was the better engine to go with.

Power goals I guess are around 400. 450-500 would be nice though. But I don't want so much power that the engine will damage faster and need repairs. I don't know what that "limit" is or if porting will help kill it faster.

The reason I asked about a 20b (I don't think 20 grand will cut it) is because it seems to me you can get even more power without risk of damaging the engine.

The car is not a daily driver as I live in a relatively small town of 40 thousand people and can walk everywhere. I just want an RX-7 because no one else really has them. And I want it to be decently fast.

I have little to no knowledge of fabrication, unfortunately.

Put an REW in and build a single turbo. With conservative tuning, good fuel and cooling setup, you'll comfortably make 350-400hp with bolt-on components.

Engine life depends on whether you try to push the power limits of your setup. If you decide to increase above 400hp, consider adding an auxiliary injection system using methanol to keep combustion temps down. Most folks who run a modded FD don't put a lot of mileage on the car so engine life does not become a huge concern.

The 20B is theoretically a better setup but on that budget the odds are good you won't get there.

By the sounds of it, it would be enough if I already owned the FD. I've heard of 20b swaps costing 40 grand before. But I can't see it costing that much. The engine is 5, the rebuild is 3-4 I think at Forcefed here in BC. Tuning is probably 6-700. I might be able to cut it with them if I got a really shotty, bone stock FD. But apparently the 20b's only get about 8 mpg? I want to stay away from that. My friend ran 350 horse in his FD with a 20 psi diesel turbo, and said he paid about 80 bucks per 400 km. That doesn't sound too bad given today's gas prices. And it being a '93.

So basically, yeah. I want to run about 350-450 horse without risking damaging the engine too much. I mean it'd be nice if it ran 50k kms at least before it died.

Thanks for your input. My buddy said the best option is to just do an LS1 swap. A close second is to keep the REW. I want to stay away from pistons if I can. I've always wanted a rotary engine ever since I found the RX-7. Hot car with a unique engine (regardless of finickiness) = win in my books.

Also, is it possible to get a moving redline for the FD? Like what the RX-8s have. So that when the engine is cold the redline is 7 grand or whatever, then as it warms up it gets to 9 (in the RENESIS). I guess 8k RPMs for the REW. Not necessary but it's a fancy addition.

The original question re-worded for apparently a needed easier reading: "Which of these engines is the best choice to swap into an FD: a turbo S5, keep the REW (and rebuild/single turbo), or a 20b."

Get yourself a JDM 13B-REW give it a nice street port, and a single turbo. You can make your HP goals but the mileage won't be the best. JDM motors have larger runners and better flow than the American rotarys. Check out Japan2LA he might have a JDM REW.

do everyone a favor and take a english class.

Do everyone a favor and take an English class. <--Maybe that's the pot calling the kettle black.

Dude just get an FD in the best condition you can find (perferably low mileage and stock).

Simply add a free flowing exhaust and intake and I believe you will be surprisingly happy. Once you get used to that much power and want more; simply upgrade from there (stand alone ecu, injectors, bigger turbo, etc.)

He spelled it that way intentionally I believe. As to poke fun with sarcasm. The REW with TT doesn't do so well with overheating and all I thought? Anyways, I'm still looking for a decent FD online. I'd have to get it shipped to Vancouver, not LA. For the guy who mentioned Japan2LA.

I would really like to get myself an S8. But apparently that isn't possible in Canada as we have a 15 year law. Which in my mind doesn't make any sense at all. But whatever.

What year FD is the best year then? A '93 or a '95? I've never heard anyone boast about a '94 RX-7 before. Unless I can import a Spirit R Type A (or closest I can find) to Washington and drive it up here. I figure importing through the US is easier than importing directly from Japan.

Thanks for the exhaust/intake info. But the nearest rotary specialist shop to me is in Abbotsford. They're called Forcefed. That's a 3.5-4 hour drive from me doing the speed limit. And if I get this car imported to Vancouver I'll be driving literally right past it. So I'm going to just drop the car off there, get the rebuild, and do everything else I need done at the same time. I don't want to make too many long-distance runs in it. Unless I absolutely have to. Or feel like treating myself to a vacation in Vancouver in the summer.

a sense of humor!! sweet!!

humour* ;)

I read that post in the link and it seems to have a lot of useful information. I'll read through it more as I need to. I think I'm just going to build up an REW for now. I don't really have the money to run an 8 mpg car with a 20b. As much as I'd like to.