I picked these up pretty cheap as they looked like they had potential to do something good? does anyone know what brand they are? also im struggling to get a twin sidedraft manifold to fit over them. For that matter i cant get anything to fit over them. I have tried std 1600 manifold, lynx twin weber manifold (see Pic), and a hitachi twin carb manifold. only one I haven't tried is a datrally manifold.

Hi there, your testing my memory but these could be the old HM41c? extractors, which were known to work quite well in the old days.

Cheers Moeman

Sorry I think HM21C is correct

Pacemaker extractors do the same thing regarding clearance... My lukey extractors clear Datrally manifold and i believe lynx/redline, on an L18

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Thanks guys. Im told these might be to big for my motor so looking at some pacemaker ones i think they have smaller secondaries. The items in the pic are 1 5/8" primary and 2 secondaries"

Do you know who made the hm21c extractors?

Head Mod or HM headers.