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HS6 Carbs for BJ7

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chicken

chicken

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On my BJ7 healey i have twin HS6 carbs, however one on the bodies (the front carb near the rad) has different bolt holes in it where the air cleaners attach. Basically instead of the two 9mm holes either side that you put a bolt through it has 7mm (approx) threaded holes and also a single unthreaded hole at the bottom, this carb body has AUD 9 stamped on it whereas the other body has AUC 8490 stamped on it.
Can i just drill out these threaded holes so that the studs will go through to bolt the air cleaner on, or have a got a non standard body ??
 
Looks like you have different types of HS6 carbs,does the carb with 3 holes have a more triangle shaped flange -if so it is the type fitted to volvos(they used a 3 bolt mounting),but as it is an HS6 carb I would think that if the jets and needles and springs are the same inside then it should not be a problem,just check that the aircleaner gasket seats properly and doesn't obstruct any holes.the threads will be either 8mmx125or 5/16 unc so you could use a bolt instead of drilling the threads out, or search for the correct carb
 
Mike

Yes i would say they are triangle shaped, you say i could use the bolts but won't they be a different size from the body with the unthreaded holes or is the 8mm,5/16 thread in the body the same thread as that in the air cleaners ?
Need to have a look really, just assumed that the threaded holes where smaller that that in the aircleaners.
 
Sorry -the bolt goes from behind the carb flange and screws into the filter-so you will have to drill out the carb flange.
 
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