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What intake manifold is bolted to my Weber 48 IDA?

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Old 02-03-13, 04:17 PM
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CA What intake manifold is bolted to my Weber 48 IDA?

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

Last edited by Fungus Mungus; 02-03-13 at 04:23 PM. Reason: resize images and add 2 more
Old 02-03-13, 05:16 PM
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Mods, wrong forum, please delete this post

fm
Old 02-03-13, 05:27 PM
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Originally Posted by Fungus Mungus
Mods, wrong forum, please delete this post

fm
So mean They will simply move it to the proper location.
Old 02-05-13, 10:01 PM
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Old 02-06-13, 08:07 PM
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i have no idea what it started as, but i would agree that it definitely looks altered.
Old 02-06-13, 11:05 PM
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Could be a DCOE manifold that was altered for use w/ an IDA. Thats my guess
Old 02-08-13, 07:51 PM
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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).
Old 02-08-13, 08:27 PM
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premix, for f's sake

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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
Old 02-08-13, 08:49 PM
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makes total sense. i think you nailed it.
Old 02-08-13, 09:10 PM
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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)
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