82 rx7 13b swap

[fnnuts86]

I wanna swap my 12a w/ a 13b and I was wonderin what I would have 2 change in order 2 accomplish this my 82 is stock w/ a racing beat header

[BoostedFC]

Well if you are talking about an 13b out of a GSL-SE, you either will have to do a carb conversion or obtain the ecu & harness to start off. If you are talking about a 13b from a FC you will need the above & a front cover from the early 13b for mounting reasons.

[fnnuts86]

Id like 2 put a s5 but Im really jus tryin 2 get rid of carb . Im not lookin 2 get more hp than stock 13b . I kno ill have 2 change the header n thats covered racing beat has a 13b 12a swap header . N will I have 2 do ne fabrication like motor mounts drive train ect.op

[BoostedFC]

If just trying to move from a carb to EFI you don't need to swap the motor. There are are some great ways to do this. If you are set on the S5 swap get an oil pan & front cover from a S3 13b for the mounting. You will need to get the ECU & harness or make a harness for the control. You could also go with an aftermarket ECU to handle the control.
As far as ditching the carb in favor of EFI on the 12a here you go:

All you need with this is an IDA style manifold & an ECU
http://www.twminduction.com/ThrottleBody/ThrottleBody3002-FR.html

All you would need is a Holley style manifold & an ECU
http://www.efisupply.com/4bbl_throttle_bodies.htm

You could use your tranny, it should be fine at moderate power levels. I see you already know the 12 header will not fit on the 13b. Hopefully this helps a little.

[fnnuts86]

Thank u but jus 2 make sure I understand u correctly all I really need is a s5 amd a few parts from an s3 what bout motor mounts

[fnnuts86]

Or if I jus put a s3 n it

[BoostedFC]

You could do 13b with the EGI from the S3.

The front cover on the early model cars are where the mounts are & the mounts are on the oil pan & motor for the S5. That's why I was saying get the front cover & oil pan from the S3 13b.

[fnnuts86]

You wouldnt happen to know where I could get a carb 13b at would you

[fnnuts86]

Or even a turbo 12a

[BoostedFC]

Sorry man not off hand, check Ebay & try googling 12a turbo. you may find something for sale.

[fnnuts86]

No luck on ebay google criagslist cali or neother place ive called or looked but thank u 4 all ur help

[BoostedFC]

Yep man anytime, BTW did you look at Racing Beat or MazdaTrix for carb & maifold set ups? There are other companies that offer EFI to carb set ups as well.

[black rocket]

Have you tried some Aussie sites? They have over abundant older rotary parts all over!