So I've got a rolling 93 with no motor and auto tranny... anyhow I was trying to compare the cost of getting a 20b in vs. a 13brew.... now I've seen decent 20b's with around 35k miles go for around 4000 I've also seen rebuilt 13brews with 0 miles and no porting go for around 3500.... considering the fact that A) I'm swapping out my tranny for a 5-speed... and B) I am going full standalone and bigger turbo (don't have ANY turbo stuff at all in the car)... the only real difference in price I think I'm looking at is the subframe and manifolds.... I can't really think of anything else that would cost me more for a 20b to go in...
I'm redoing the suspension and fuel system regardless of motor.
Can anybody really think of any major costs?
I'm swapping the motor in myself with my roommates help (were also doing a swap to his chevelle)... I think minus the nickle and dime random ****... the motor will only be a few grand (ie:2~4k) more to put in a 20b.
Whats you're thoughts on this?

 

Well, as you said, you will need the subframe. thats a big cost. If you wanted to go single, the turbine manifold will cost you a grip, unless you know how to weld. The exhaust will have to be upgraded, as will the clutch. A 13B clutch wont hold the torque very long on stock turbos, and going single, a stock clutch is out of the question. Thats what I can think of right now, besides the things you already mentioned.

 

what do you see usual costs of these installs going for. That is that when you get the motor you already have the complete motor with the ecu and harness. what is needed to put it in. staying with the 20b's stock twins. also will a stock 5 speed fd trans hook up to the 20b. will the aftermarket bonez clutch handle a lightly modded 20b. i am sory to ask so many q's but i would rather go 20b if i can afford rather than ls motors. thanks for any help and for flamers well just know you are ignored. I am not going to fight back.

 

The stock ECU looks for the Auto tranny...I think only one person has successfully made it work, and it wasnt worth all the effort. Reason being, after all that work, you still have a stock "engine blow" Ecu....

 

look at what i wrote in this thread that some other guy posted and you'll know pretty much everything you would need to know. if you have any further questions let me know....
-erik
https://www.rx7club.com/20b-forum-95/how-much-would-cost-put-20b-fd-571887/