I picked up a 12A pulled from an SCCA '79 FB last week. It came with an MSD Blaster ignition setup, full road-race style exhaust (not RB, but not sure what), a wide-band setup, and a Weber 48 IDA setup. Also came with the stock intake manifold w/Nikki carb. Oh, and a rebuilt Miata 5-speed tranny.

I pulled the Weber off to have a look at the intake ports to see if the engine was ported or not. I figured it was probably at least street ported since it came with the Weber 48 IDA and the wideband, but I couldn't really tell by feeling around in the intake ports. But I digress.

I examined the Weber and intake assembly and don't recognize the intake. It seems like a custom job. Here are a few pics:









There are no markings on it that I can see. The ports appear to have been polished at a minimum...perhaps even opened up. As you can see, there are lots of welds around the base of the runners. Has anyone seen this before?

fm

 

Mods, wrong forum, please delete this post

fm

 

So mean They will simply move it to the proper location.

 

Moved

 

i have no idea what it started as, but i would agree that it definitely looks altered.

 

Could be a DCOE manifold that was altered for use w/ an IDA. Thats my guess

 

that was my first thought, too, but then i saw what appears to be some kind of funky alteration at the primary ports (first photo).

 

could also be an old manifold for a "short" port engine as well, which had to be ported out beyond the original casting and in turn fill welded to fit the later tall port center iron

 

makes total sense. i think you nailed it.

 

lol, you would be amazed at what some people do to make things work on a budget

(Ive "modded" things worth much more than their respective appropriate replacement part, just simply because I could make it work with a little fabrication and minimal funds)