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carby sizes
https://www.ausmini.com/forums/viewtopic.php?f=2&t=43050		 Page 1 of 1
Author:  Leighton [ Tue Jun 17, 2008 2:20 pm ]
Post subject:  carby sizes
hi,

just want to know how you tell what size the su is? and whats the difference between a 1.1/4 and a 1.1/2

cheers leighton
Author:  simon k [ Tue Jun 17, 2008 2:30 pm ]
Post subject:  Re: carby sizes
Leighton wrote:
hi,

just want to know how you tell what size the su is? and whats the difference between a 1.1/4 and a 1.1/2

cheers leighton


the difference is the throat size, and therefore amount of air that can go through it....

easiest way to tell the size is by the mounting bolts

1.25" - bolts are lined up vertically IE:
o
o

1.5" - bolts are lined up at 45 degrees IE:
o
....o

1.75" - 4 bolts IE:
o o
o o

1.75"s commonly come in 2 varieties, the HS variety has the fuel bowl beside it, the HIF variety has the bowl underneath. 1.5"s also come with the underneath bowl, but they're not common
Author:  sports850 [ Tue Jun 17, 2008 2:30 pm ]
Post subject: 
Measure the throat is the easiest way but also have a look at the stud holes where it mounts onto the manifold , if there are two studs vertically opposed it's an 1 1/4" , if there are two studs diagonally opposed it's an 1 1/2" , if there are 4 studs it's an 1 3/4" .
Author:  Spaceboy [ Tue Jun 17, 2008 2:47 pm ]
Post subject: 
the hs4 or inch and a half is physically bigger than the hs2 or inch and a quarter.

in addition the hs4 uses a doughnut shaped air filter that totally surrounds the carb, wheras the hs2 has a smaller round airfilter box next to the carb.

also you can tell by the nuts that attach it to the.... :lol:
Author:  spraycanmansam [ Tue Jun 17, 2008 5:32 pm ]
Post subject:  Re: carby sizes
Leighton wrote:
whats the difference between a 1.1/4 and a 1.1/2


1/4 of an inch :P
Author:  gafmo [ Tue Jun 17, 2008 5:40 pm ]
Post subject: 
If any one does not know what a HIF44 looks like
Image
Image
Author:  frednutz&co [ Tue Jun 17, 2008 6:59 pm ]
Post subject: 
poorn :twisted:
Author:  BALLISTIC [ Tue Jun 17, 2008 8:39 pm ]
Post subject: 
gafmo wrote:
Image


ohhhh ahhhh.....shiney!!!! 8)
Author:  drmini in aust [ Tue Jun 17, 2008 9:19 pm ]
Post subject: 
Pfft... those seem to give more trouble than an HS6 does! :lol:
[dons flameproof suit] 8)
Author:  Morris 1100 [ Tue Jun 17, 2008 9:26 pm ]
Post subject: 
A bloke on the 1100 mailing list was having trouble with a flat spot in his fairly worked Austin 1300 at higher speeds, he tried a lot of things to cure it and in his desperation he removed the HIF44 (1¾") and stuck on the stock HS4 (1½"). It didn't cure the flat spot (which he found was a dodgy plug lead) but it did improve the pick-up and drivability so much that he is sticking with the HS4.
Author:  Leighton [ Tue Jun 17, 2008 10:38 pm ]
Post subject:  carby sizes
thanks for the reply's- tommorow i will have a look at what ive got..... cheers leighton
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