oh yeah, it's either this or maybe an evo conversion. which one would you rather have?

 

True it can with stand a good amount of boost, but think about it. Like i said before, the rotary is much simpler. To modify a piston engine think of what you have to upgrade: pistons,crankshaft, connecting rods, valves, cams, cam gears, port and polishing, fuel, exhaust etc.... I like to think about a rotary having about 5 things that you can modify: Intake, Turbo, Exhaust, Fuel, and porting. You really don't need to modify the ignition because its already extremely efficient. Fuel you need injectors,and a fuel pump. throw an intake on, upgrade the turbo, put an exhaust on (which will net you 60+ hp dyno proven), and your pretty set to beat a lot of people out there.
But which ever route you choose i wish you good luck and i would be interested in seeing how it turns out.

 

the sr20det is a great motor! if you can do it, go for it but what about a 2JZ out of a markIV supra, haha now where cookin with gas. But they are really 2 great motors. I think you could get more power out of a 2JZ than the sr20. I think their about the same weight and same size overall, i could be wrong tho! Good luck none the less i hope to see it soon!

 

Same weight and overall size? Not even close! the SR20DET is a single T25 turbo 2.0L 4cyl and the 2JZ-GTE is a twin turbo 3.0L INLINE 6cyl. The 2JZ is a MASSIVE engine... much bigger and heavier than the SR20 by far! (sorry don't have numbers to confirm this though).

The power potential of the 2JZ is amazing though. How does 950 rwhp on stock internals sound?!?!

 

yeah, i think your assumptions on the similarities of those two engines is a little off. to begin with, the cost of the engine and tranny alone would be more than the whole sr20 swap. it would be awesome, but difficult and i definately can't afford it. the thing about the sr is, i don't have to modify the heads or internals, and i don't plan to. maybe when i'm going to put a bigger turbo on it then yeah, but the stock internals are strong enough. the crank is supposed to last up to 500hp. revin, you are right about a piston engine being more complicated and eventually it would cost more in parts. a guy here is going nuts on his 1.8t (now 2.0) golf and is having problems with his valves. he's rebuilt it about 3 times now.
thanks for all the support guys, hopefully i can pick up tons of hours this summer and get this thing rolling. it should be a learning experience! now, all i need is for someone to sell me their car. maybe i shouldn't mention the swap during the deal.....

 

I didn't read all the replys.

But, you figure $2700 for a red top shipped. Plus what ever you can get exhaust, motor mounts, FMIC, and some one to do the swap. It would be too much for a back yard mechanic, you will have to get a real shop for this. Sounds expensive.

I am a fan of the S13 SR20DET. THey are inexpensive and very reliable. And an exact swap, for the 240sx. I would like to see you do this swap. But it would be easier and cheaper to buy an S13 240 and go from there.

Good luck. Hope everything goes well.

 

You know somethign funny, On the NissanInfinityclub.net there are at least two guys wanting to try and put 13b's in an S13 and S14. You want to be in there world and they want in yours. HA! Thats funny.

 

hehe, yeah. i just joined up at a 240 forum, so i'll be picking their minds as well. they're nuts about the sr so i'm sure they'll like the idea. the reason i'm not doing a 240: it's easier to find a cheap rx7 chassis. i've seen many more go for 500 whereas 240's are a little more. as for the shop, i've got everything handled.

 

time to revive an old thread... i plan on getting rid of the current motor in my car by next spring and was looking into a piston swap, be it v8, sr20, rb25, 2jz, whatever the case may be, and since i have yet to find any good info about these for a 2nd gen chassis, i figured id light the fire once again. Yes, rotary is lovely and all, but i've owned 2 so far, and would love a nice japanese piston engine. i work at a shop so resources and fabrication of needed components is not really an issue. What im really after is any USEFUL information on motor dimensions or anyone who knows anything that could help, none of you "rotary > piston" queers. SO!! lets get some information flying

 

just to clarify, im looking for information mainly on sr20set and possibly rb25det... i already know what it would take for a v8 and would rather take a nissan over a yota

 

the sr20 isn't really that reliable. without internal mods and a lot of $$ the car will have reliability issues making that kind of power. my friends sr20 swap is less reliable than my 13b. its a good motor after you dump a lot into it. on top of dumping in $ for custom pieces for the swap in a 7 it will add up fast.

 

240's can be had for 1000, your going to spend any money you save on all the custom fab work that will have to be done. 240 is a direct drop in.

 

I saw a FC with an SR swap at Formula D two years ago in Atlanta. It had a Gumball 3000 sticker on it, I'm not 100% sure whos it was. Pretty clean swap tho.

 

Do it, have fun.

 

mines super quiet, never blew an engine. then again, i actually have a proper tune (go figure!). my exhaust is full 3" the whole way back, rb downpipe, borla straight through muffler, apex'i catback. all stainless, single exit, super quiet until about 3000 rpm. the turbo intake is WAYY louder than the exhaust.

also, the rotary can handle things like intakes and exhausts, but the ECU cant. however, with fuel upgrades and something like an rtek or SAFC or even better a full standalone, you can make crazy power on a stock engine. if you really think its going to be cheaper to do a full custom engine swap than upgrading the stock engine correctly, you're wrong.

 

did you try SR20forum.com. im sure you can find out a bit there. as much as i'd hate to admit it since that swap has become the new engine swap fad and is almost as popular as B-series swaps on hondas, i think it might be cool in an FC. i've seen one in an AE86. but hey good luck. i'd love to help more but i dont know much about piston engines because for the last 11 months ive done nothing but rotary work and before that my dad worked on my accord.

if it was cost effective (which its not) a 26b would be a bad *** swap... but that wont happen for a long time probably

 

REPENISHAT!


-Ted