As you guys know I've been trying to ressurect my RX7 onto an 84 GSL-SE frame. Though, I've been coming into some issues that are difficult to get past, the biggest one is how I am going to mount the s4 13b I have into the '84 GSL-SE chassis. Normally I would go with the usual Front cover, oilpan, and crossmember swap; but I have hit my budget and am not able to find any GSL-SE's at the 8 local junkyards. I''ve been trying to come up with ideas ranging from using an extra 12A crossmember to fit the 13b using the side mounts to prossibly drilling/reinforcing the 13b front cover so that I can use the 12a mounting bracket. Its been about a month or so now and I've been losing a lot of sleep; I really need to start on this project but this is teh biggest limiting factor right now. So I figured that I would open up the floor and hear what you guys come up with; you know like a think tank?

Okay, before I give this over to the fourm I need too set the guidelines on what I am working with and what I can physically do.

-I have hit my budget and cannot spend over $50 for any one part
-I cannot source a GSL-SE from a junkyard but I do have an oilpan from the dealer for one
-I have access to a welding shop but I cannot bring either the damage car or the new frame due to transportation issues
-I can transport large pieces like crossmembers or axles though.
-I want to retain the oil pump and not have to pre-mix the fuel

I know this makes it more difficult, but this is what I am working with right now and I can't do much to change that at this moment.

So now I turn over this thread to the Fourm Members in hopes that between our collective minds we can come up with an effective solution to this problem.

 

go to the for sale section on this forum.

 

You already have the oil pan? Then just find a 12A front cover and slot the holes on the front mount bar and crossmember each by 10mm. Easy as pie.

 

There is no provision in the 12A cover for an OMP or MOP whatever. He would have to premix which he stated he didn't want to. I'm sure someone has to be willing to sell one. Where's the love people????

 

source out the forsale section...but the front oil cover to a gsl-se and your golden...I know money is tight but it would be int he best interest for the swap and your self and you still retain the omp so you don't have to pre-mix

 

I assume you mean that the 12a front cover would not have provisions for the 4 line omp that the 84 and later 13b's use? Because 12a's definatly have omp's on them haha...
I agree though, before you go nuts making customer center iron mounts (like I did haha) just get the front cover and slot a 12a crossmemeber and you're good to go. Since you are using a s4 engine you don't need to worry abuot modding the SE cover for the s5's electronic OMP. I was able to find a SE front cover and oil pan for $70 shipped from a forum memeber a while back, you will find one.

 

BTW it's not entirely clear from your post, but if you need a 12a crossmember I have one I'd part with, its sandblasted and stich welded.... Shipping might be a killer to CA though....

 

https://www.rx7club.com/west-sale-wanted-classifieds-195/1985-gsl-se-fs-ft-787481/

 

Uh, yeah, 12A front covers have OMPs. Just run the lines to the oil injectors on the rotor housings and cap off the ones on the manifold. It's fine because the 12A OMP puts out the same volume, it just doesn't split it into four lines.

 

Only problem is the OMP rod may be a different length.

 

Hmm.. I was under the impression that using the SE cover meant that you were not able to use the OMP? ...

Thanks for the link I'll look into it...

How did you do your front iron mount? I'd liek to keep that as a back up.

 

Yeah, I'm sure it won't work without some modification. You can also just wire the lever to the 9 o'clock position and you'll be fine.

 

The ONLY reason to use the GSL-SE vs any old fb front cover is specifically to retain the OMP.

 

to retain the GSL-SE/S4 metering pump.

the 12A has a pump, its just different.

 

Do you have any pictures of that center iron mount? I'd be interested to see if it coudl be imporved upon?

I'll keep my eyes out for a front cover for now... but I don't think I have the money to pay for it. Barely have enough to cover gas these days.

Great ideas so far!

 

I can get some pics, I've been meaning to update my T2 swap thread anyway. It won't work unless you have the re-speed rack and pinion kit though, so I don't think thats gonna be an option for you...
The re-speed kit puts teh steering in front of the crossmember leaving all that room to make a subframe for center iron mounts, it came out pretty good, although I'm still toying with other options for the whole front end in general....
Oh and you can definatly retain the OMP with the swap you are considering, its the S5 swaps that get a little more complicated because the large electronic OMP will not bolt right up to the SE or 12A front cover, must be modified to work, which can be done. I initially went that route before going with the center iron mount setup.... It worked out pretty well, but I like this solution much better....

 

Ah... I see...

Pics would help to see what you are taking about, I can't quite access my 13B front cover right now... and I don't want to take the engine crane out of my blazer and put it together just to take the engine out of the blazer to look at it, its a very tiresome ordeal for one person to do.

Maybe there is some way to Drill/tap or mount an adapter to convert the front plate to a mounting surface? I haven't looked into that idea very thouroughly yet. I know its going to be a bitch in terms of work, but like I said I have no money to do much else.

 

I tried that once and it seemed like way too much oil under normal driving conditions. Burns your eyes at idle

 

it is, but it works if you've got no linkage hooked up

 

You'll end up failing emissions with an incorrect OMP just as bad as premixing.

Is that why the OP doesn't want to premix?

 

To answer your question, I am trying to keep this CA SMog legal, so far everything is going okay, and the EVAP and everything will be smog ready. That's one of teh reasons I do not want to premix... the other reason is I am lazy as **** and don't want to have to mix it after each fill up.

 

You can probably use an S4 OMP lifter rod.

 

Really sorry that I'm not much help as I'm new to the RX7 world. But I thought I could at least offer some helpful humor. You know, morale booster.

 

Man, that **** works

It seriously will glue ANYTHING and stick retardedly good.

 

Well the humor helps, But what about those pictures on the custom front mount set-up?