I was gonna upgrade my non-turbo fc into a turbo my doing the engine swap but someone told me that a sr20det engine is better. What do you guys think?

 

You can make just as much power out of a 13BT as you can with an SR20DET. The engine swap would be pointless, and much more difficult than swapping in a 13BT into your non-turbo RX-7.

It might sound like a 'trendy' idea, but that doesn't make it a good idea.

 

Someone told me to put a 20B in a miata and a supra engine in my FD, does that make them right? Or even smart?

 

True! They were telling me that 13b turbo's have alot of problems and that they dont last as long as nissan engines do.

 

I would take a 13B putting 400RWHP ot the ground over an SR20DET putting 400RHWP to the ground.

 

sr's are overrated
there are much better engines

 

werd.

the trendy **** is putting SRs where they rnt supposed to be...

 

Well i have the 13b turbo ready to be put in my car. I think im gonna do that!

 

Hey where is a good site or place to find second generation rx-7 carbon fiber dash kits or regular dash kits?

 

You got $5,000 for the swap?
Yeah, I thought not...


-Ted

 

the swap is gonna cost me 2500!

 

Non rotary engine in an RX = Weight distribution and total weight shot to hell, taking away the main advantage of the Wankel engine.

But I guess that doesn't matter if you're never gonna do a real race, ie, one with corners...

 

were you even reading what he said? he wants to put a FOUR CYLINDER in it!!! an sr20det weigh's the same or less then a 13bt! it wouldn't mess up the handing at all.
also, SR20's have been known to go 250,000 miles (with some mods) without a rebiuld. in all me years playing with rx7's, I've NEVER seen a 13bt last more then 175,000 (bone stock and babied all it's life)! mine only got to 110,000.

the bottem line is YOU do what YOU want with YOUR car and let him do what HE wants with HIS car. after all, Freedom is what makes this country what it is.

 

My bad :P

I didn't realize that the SR20DET weighed the same. I also realize that it's more reliable.

Better choice than a big block V8, I guess.

 

I doubt you can do it for that cheap.

So let's see it?


-Ted

 

thats also bullshit.

 

hey, no harm, no foul.

sorry for flyin' off the handle

 

I didn't mean Wankel engines all together, I meant a Wankel engine in an RX-7, since it has a good weight balance due the light engine.

And if you think that's BS, then fine, whatever, I'm wrong.

 

Hey, thats not true ive got one and it just died this summer at 253,XXX miles original motor no rebuild. I had a full racing beat exauhst, Dp, and colld air intake, and a few other custom mods. so do a little research before you start putting pistons over the rotary.

 

Was yours a turbo II? If it was then yours is the exception that proves the rule.
So far my 87' N/A has been super reliable (exept for the odd flooding now and then) and I had an 83' with over 200,000 still running when I sold it. The problem I've had is this, As soon as you put a little boost to a rotory the engine life is cut by 1/4 to 1/3. If you put alot of boost (15psi+) to one its life is shorten'd to one or perhaps two "seasons". If there is someone in this club that can prove they have a turbo'ed or supercharged 13b that puts out 300rwhp+ and has made it more then 50,000 miles ON BOOST, then I'll Take back EVERYTHING I've said.

 

50/50 - The Ls1 swap has shown to add about 60 lbs to the car, and made about a 51/49 weight distribution, hardly something that would be very noticeable even to experienced drivers. Weigh a 13B-T or 13B-REW with all acessories turbos etc then weigh and SR20DET (iron block, turbo) and see what the weight differences is.

13B-T Reliability, my 93 RX-7 had over 75,000 miles, drag raced and autocross quite a bit since the rebuild putting out 300-350rwhp the whole time and I sold it with the motor showing no signs of going, all motors that take too much boost or are run hard will go quicker than a well maintained naturally aspirated motor. Pistons and rotaries are both susceptible to overheating, over boosting, poor tuning, etc.


How many people have put a big block V8 in an RX-7? Not many that I know, and I am willing to bet they could care less about the cornering ability otherwise they would have chosen a different engine, some people enjoy different things.

 

I argee, and while I still think 75k 350wrhp 13b-t's are a rare site, I stand corrected

 

BTW Ice, the SR20DET has an aluminum block, head, etc. Iron would be a lot heavier. Just letting you know.

 

I've heard or rather read about the "added 60 lbs" to the FC's. In terms of FD's, I've actually read the weight was about equal. I can't confirm any of this, but perhaps someone can make it more clear.

 

https://www.rx7club.com/showthread.p...hlight=weighed