glen carmady

does anyone out ther have an Rx-7 with a turbo cosmo transplant

setzep

I'm workin on it. 13b-re into a FB. I ditched the twins though in favor of a nice single.

AJC13B

Yes.

20B10AE

iTrader: (14)

I'm also in the process of doing this. It's going into my 88 10th AE. I'm getting rid of the stock twins in favor of a single 60-1.

rotorbrain

i wonder if that motor could be a cheaper replacement for the REW? im not sure what the mounting position is on the RE though.

paul

Directfreak

iTrader: (2)

peejay

13B-RE mounts the same as an FC engine, no? Mounts to center housing.

Might not be a drop-in replacement for an FD, in other words.

But for an engine swap, hell why not... just scrape off the stock turbos and put something decent on there

Marcel Burkett

13BREW mounts are on the back plate.

peejay

Yes, this is a known, trying to remember where the mounts are on the 13B-RE.

j9fd3s

iTrader: (3)

the 13b cosmo motor mounts just like a 20b cosmo engine

mike

capt. bill1

Where do you get the rear housing so you can mate the Cosmo to a manual transmission?

j9fd3s

iTrader: (3)

you can use an fd housing, and a turbo 2 housing. acutally the stock cosmo housing bolts up fine, it only has one bolt different

mike

peejay

i'm confused. i thought the FD side housings couldn't be mixed into other engines without using all three FD side housings because the FD intake ports down down in at an angle instead of straight in like earlier engines. i'd imagine you could *either* use an fd rear plate, *or* a t2 rear plate, depending on if the cosmo has the angled or straight intake ports.

setzep

Whats all this talk swaping rear plates for? My T2 trans bolted up to my 13B-RE just fine. but like j9fd3s said there is one bolt thats different.

peejay

Well, if you wanted to put the engine in a FD and not have to fabricate a way of mounting it...

A used Cosmo engine, a new FD rear plate, and necessary gaskets, still come out to be cheaper than a used FD engine. What worries me is the intake port size/plcement... ah well.

setzep

I guess I kinda missed where you were going with that. If you know what FD intake ports look like on the outside I could go out to the garage and take a quick shot of my cosmo engine if you wanted to compare (intake is off right now). But I'm pretty sure cosmo/FD ports won't line up right with out a lot of porting.

j9fd3s

iTrader: (3)

we used an fd intake gasket on the 13b re fc we are doing, so the intake bolt patterns are the same

mike

AJC13B

Cosmo secondary ports are 5mm bigger than an FD engine.

crispeed

The FD (13B-REW) plates can be ported to the same size as the 13B-RE but it's a whole lot of work. Trust me I've done it!
On my FC I only had to fab one mount. I drilled and tapped the the bottom of the RE block to accept the factory passenger's side FC mount. On the driver's side I also used the factory FC mount but I added a little extra material so as to be able to use the bolts on the RE's block.
BTW. The process is pretty much the same when using the FD block in the FC chassis.

crispeed
87 Rx-7 TII
9.204@150.47mph
2600lbs
un-tubbed