20b fd

[Corey w]

Hi every one i am trying to get some good information about firstly a 20b conversion into a fd.

Also what type of power is possiable to make out of a stock ported 13b with a large singel turbo what is peoples experiences and preferences to these ideas thanks again every one

 

[lil_red_wagon]

an FD is easy to swap the 20b into, but expensive as hell. if you are fortunate enough to find one for cheap that doesn't need to be rebuilt, you will need to modify the ecu in some way. if you are going that far, i would recommend a stand-alone.

as for power, i have seen the 13b put down ungodly amounts of power. it is all about how much money and time you want to put into it.

 

[13BEAST]

There are some who have made crazy ammounts of power off the stock 13B-REW ports, however why would you not want to get the motor ported? It's easy power.

lilred, for someone to go with a 20B, they would not need to modify the stock ECU, they would need to go with a complete standalone capable of controlling atleast 6 sparkplugs and 6 fuel injectors individually. Something high end, like a Haltec.

I do not know where this forum stands on cross linking, but if you want to get good, quality information from people who have done the swap, go to the rx7club.
http://www.rx7club.com/forumdisplay.php?f=95

 

[jawhitehead]

You're looking at minimum 50k for a shop to put a single turbo 20b in, get it tuned, wired, and getting everything sorted. You can do it less expensively than that, but you're still looking at 15k-20k in parts alone.

As far as power potential, there is a thread on rx7club.com in the drag racing section about guys in NYC making between 610 and 625whp on an unopened 13b block and a Borg/Warner S475, and they said that they could be pushing 750whp on a more agressive tune (read ragged edge, close to blowing).

As far as 20b's, it all depends on how much money you want to spend. 20b's are more difficult to pull huge numbers out of because of e-shaft flex, block flex, etc. etc. Check out the 20b section on rx7club.com for issues and build threads. If you want to see how difficult and much of a headache a 20b install in a FD can be, check out this thread:

http://www.rx7club.com/showthread.php?t=325733

David Hayes has well over 100k into his "simple" 20b install because of getting screwed by shops, paying for poorly executed services, etc. You just don't know who to trust because putting a 20b is still a relatively unknown swap to shops in this country.

BTW, no offense to this forum (everyone I've met through my brief stop at the end of a cruise has been awesome), but this is not the right place to be asking about a 20b install in a FD. There just isn't the depth of knowledge that is available over on rx7club.com.

In short, unless you have really really deep pockets or enjoy living on ramen and being a slave to your car, don't even attempt a 20b install. You will bankrupt yourself in the process.

 

[13BEAST]

David Hayes has well over 100k into his "simple" 20b install because of getting screwed by shops, paying for poorly executed services, etc. You just don't know who to trust because putting a 20b is still a relatively unknown swap to shops in this country.

Yeah, I always feel for the guys who get hosed time and time again. It's definitely not for the faint of heart or the stingy.

BTW, no offense to this forum (everyone I've met through my brief stop at the end of a cruise has been awesome), but this is not the right place to be asking about a 20b install in a FD. There just isn't the depth of knowledge that is available over on rx7club.com.

I'm hardly representative of this forum at all, but you're right about rx7club.com. The wealth of knowledge there is vast, especially for the FDs. We have such picky, high maintenance cars, and they demand nothing but the best from us.

By the way, not trying to advertise for anyone's shops, but the only places in the US that I'd want to do a 20B swap on my FD would be, in this order, IRP in Metuchen, New Jersey, Rotary Performance in Garland, Texas or KD Rotary in Bethlehem, PA.

 

[Corey w]

thanks for the replys and the honesty that is excatiley what i have been wanting.

13beast i didnt want to port it just yet as i would like to just have the car to drive enjoy etc before i opend it up doing this willl give me more time to learn more etc i wanted to learn about the ports sizing differiences etc before i made my choice of ports.

lil_red_wagon as for the ecu i would be going a full stand alone ecu something simmilar to what i am running in my other car at the moment (not a rotary ) as for time etc to do the conversion i would be doing it my self i have a friend who is a machinest by trade and he dose all off my metal fab work for me and another friend that is an auto elec we are a close group so getting the stuff built wouldnt be that bad.

thank you everu one you are helping me alot i like the 20b due to the fact that there rare and i was under the impression that it would make power easier with less stress on parts etc and i could make more power with oiut opening it up is this not the case?

jawhitehead you mentiond e-shaft flex, block flex, etc. etc.what types of power dose this occour at.

Thanks again (cool)

 

[Herblenny]

I'll put my 2 cents in..

20B max so far is about 800RWHP in an FD that I know of. Its max potential is well over 1000HP... But who in the world would want to drive that on the street??

13B will make 600+ RWHP with a nice single. I know a guy who drags and drives his car during the weekend without an issue... and he built the motor himself with help of few..

Bottomline, 20B project or any high HP project isn't simple and will require cash. My newly built "D" series motor is about 12K invested. By the time I get the thing in and tuned, I might have close to 30K or more invested.

Poster above stated about some 20B shops... Well, I know most of them.. I don't think IRP did any 20B conversions. Rich and Igor did mess around with a 20B FD, but not sure if they actually install one. KD Rotary did Gordon's NA 20B but far as I know, only 2-3 conversions.. best place in my mind is Define Autoworks in Ohio. They have made a kit that will bolt up 20B onto stock subframe (I'm awaiting to get their kit.. should be here in next month or so... waited for about 5 months now). They also have done more 20B conversion than anyone I know in USA. They do offer 20B conversion service but I was told close to 50-60K when its all done and turn key.