what will i need to do this swap ? how much do u think it will cost ? I think im beter off with the sr20det due to the fact that its more reliable and longer lasting than the 13bt, but want to know what is needed for the swap.

I know i need the engine, tranny, ecu, harness ...but what else is required? I think it would be a great swap, i have nothing against the 13bt , i just dont want to be worrying about my engine ever failing and having to be rebuilt. normal 4 cylinder engines are much more reliable in the long run if u ask me

my current rx7 is a 87 se n/a model 5 speed, i bought it for 1000 to find out the wiring harness is fried and cut all over the place ( i was told it was the crank angle sensor), but i dont even know if the motor is good and i doubt it is so im going to be working on making my rx7 project a sr20det swap, i think it would be a mean monster

 

my 13b has 285k miles on it and still pulls hard, i dont see why people give up so easly on rotary, if people actually build a a good engine from the get go you whont have any problems with in your life time. i think that a sr20det swap would more expsensive than just building up a 13bT and putting it in, but its your choice. i know there is a guy on the forum who did a sr20 swap but idont remember his name look around im sure you will find something

 

https://www.rx7club.com/showthread.php?t=204583

 

im not looking to build an engine, i want to buy an engine i can put in there and not worry about having to rebuild it to make it last , if i get a jdm sr20det with only 40,000 miles on it i think it has chances to last alot longer than a rotary, i just dont know about the rotary much, but i see alot of engines that have blown rotors, low compression, need seals/rotor housings etc, i want something that i know will not fail... i understand the way 4 cylinders work alot more than rotary, rotary are great but when u blow a seal its all over, 4 cylinder engines are different

 

every motor will eventually need a rebuild.....to "last"

 

buy a reman

 

cost? more expensive than a LS1 swap.

There is a another section for questions just like this under "other conversions"

 

might as well put a v8 in it

 

look my man, i know i'm just getting into rotaries. but i guarantee you i've done enough research to know that a rotary taken care of just like a "normal" engine will last just as long and be just as nice to you. i'm going to buy my engine from pineappleracing.com, from what i hear and read they make an awesome engine, plus you can get a 5 year/60K warranty with it. now how many engine builders will give you that warranty? doesn't matter if it's rotory or not. on top of all that, swapping an SR20DET will disrupt the 50/50 weight balance and the whole driving attitude of the car will change, not to mention all the suspension hell you'll go through. trust me, rotories are as reliable as the harder working counterparts, you just have to follow the maintainance schedules just like you would any engine. think about it man.....this many rotary fans can't be wrong.

ps: if you do decide(hopefully) to buy an engine, whether you're turbo or not, go with the 3mm apex seal option. that's the achilles heel of any rotary, fix that and you'll be fine.

Round And Round, Not Up & Down

 

i think i will stick to the rotary, i just dont know much about it ... i want my engine to last, i also want to buy an engine that will last , i dont want to buy a beat motor , but the problem with that is im gonna have to do a n/a to turbo II conversion, dont know how much it costs, and dont care, but i know it will be much better than having the 87 n/a with only 146 bhp, i want to get the s5 turbo II , i hear they are the strongest engine and tranny

 

The only reason rotary engines normaly fail is because of abusive dumb ***** that think they can run with low oil or overheat the thing. Then there are the people that like to think the redline really means you can go another 2-3k rpms



Get a rebuilt engine and a good used harness and drop them in. It will be less work, less cost, and you won't **** up the car.

 

where is the cheapest place to get a good rebuilt engine ? or even a used engine? i will need the tranny also, along with everything else to do the turbo conversion but i could purchase that seperately , i want something that isnt too expensive (im not what youd call rich) ,but i want somethingwith 100 -115 compression, i wont buy something that is just going to need a rebuilt in 10k miles, but anyways ill keep looking...what do u think of the engines on ebay ? are they junk ? anyone buy one on there ?

 

I'd say look for a j-spec importer and try and get a full long block with a tranny. Then just pick up an A-spec harness.

 

do the turbos come stock with 2mm seals ? i thought they came with 3 mm seals but i was told 2mm, and does it make any difference having the 2mm with engine life ?

 

I can tell you this, SR20's are the MOST over hyped engine right now.

I raced a SR20 in the quarter mile with my 13BT. I killed that sunvabitch with only a 1.2 R/T. He was in mid 15's while I was low 14's. I am now convinced that Rotarys are the better choice for whatever you want to do. Just take a little more money sometimes.

 

how would the a-spec harness hook up to a j-spec engine ? i thought they are totally different

 

only the routing is different.

 

You need to read the FAQ now that you've decided to stick with the rotary. The engines ARE reliable when taken care of (like any engine). My engine has 130K+ miles and still runs strong.

All of the 13B engines have 2MM apex seals, which is more then enough for anything less then 500hp (although I've read of high HP with the 2MM apex seals).

If you have a core send it to www.rotaryresurrection.com You won't find a better rebuild for the prices he has.

Remember though, for any rebuild you CANNOT run it over 4500 RPM for the first 2000 miles!!

 

Think of it this way... for the money spent on putting in the SR20, you could probably build a 13bt, then blow it in 100,000 miles, then get another one for 100,000 miles .

 

I dont know about you guys but even 50,000 miles is alot to me. I had my rx7 for 2 years and put 28,000 miles on it and that was racing miles. It blew up because I detonated it for 20 seconds wondering what that noise was. My point is that within that 28,000 miles I made enoughf money to easily do a rebuild. I cant imagine an engine of mine lasting over 100k in any car. I'm just to hard on it and always experiementing.