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scooper67
 Post subject: HS4 or HIF4
PostPosted: Wed Feb 28, 2007 6:46 pm 
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There has been big mobs written about the two carbies but in practice which is the best choice,1275 engine built mainly for torque and reliabilty.Also choice of manifold. Would carbies off MGB be suitable?Thanks

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poeee
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PostPosted: Wed Feb 28, 2007 7:06 pm 
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Location: Geelong, Victoria
HS4 is a 1.5"... HIF36? is the HIF equiv. Were they also known as HIF4's?

HS6 and HIF44 are 1.75".

Manifold wise, the Russel Engineering manifold is the best, but very long (give them a call for info). Another good one is the Mini Spares.

MGB carbies are twin HS4's? If jetted correctly on a mild to hot 1275, they would be fine. They would need a Mini manifold though.

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scooper67
 Post subject:
PostPosted: Wed Feb 28, 2007 7:17 pm 
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Thanks for that,but I was trying to compare the HIF4 and the HS4 which I believe are both 11/2.Which one do I use? Thanks

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speedy
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PostPosted: Wed Feb 28, 2007 7:20 pm 
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HIF38 =1 1/2", HIF44=1 3/4" 8)

For a 1275, go for a 1 3/4. Either HS6 (there's one in the for sale :wink:) or HIF44.

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poeee
 Post subject:
PostPosted: Wed Feb 28, 2007 7:33 pm 
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I have come to the conclusion that neither is best. There are people who say HIF, and others that say HS. So... they are both as good as each other! :lol:

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Mick
 Post subject:
PostPosted: Wed Feb 28, 2007 8:01 pm 
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Location: Under the bonnet son!
Don't they (the HIF's) use that annoying waxstat device?

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scooper67
 Post subject:
PostPosted: Wed Feb 28, 2007 8:06 pm 
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Don't know, but that is the sort of stuff I'm trying to find out if either has features not desirable.Will be running them as twins.

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Clubbie74
 Post subject:
PostPosted: Wed Feb 28, 2007 8:09 pm 
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Just how often do you need to play with the HIF one's, do they go out of adjustment or actually break something?
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