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HIF6/HIF44 carb inlet manifold and linkage 1275 motor

HIF6/HIF44 carb inlet manifold and linkage 1275 motor

HIF6/HIF44 carb inlet manifold and linkage 1275 motor
Qty:
Specially Priced Item
Internet Price $689.95
Part No: MMKT0400
Internet Price $689.95
This Item has a $200.00 core charge.

This conversion kit provides the parts needed to convert your engine to use the HIF44 1 3/4" SU carburetor on your 1275cc engine. Kit includes a rebuilt carburetor, BDL needle, intake manifold, air cleaner, spacer, throttle cable and neccessary hardware. The rebuilt carb. will comes with all new seals, gaskets, needle & seats, and jet tube.  All parts are inspected, ultrasonically cleaned, and polished. This is a great upgrade from the twin SU carbs, easier to adjust and maintain and flows just as well.

 

 

 

 

 
 
Question:
I am working on my 77 mini, have a few parts that I am after and also a few technical Qs which I need answering. Would appreciate your advice. Motor specs are: - Higher 1.5 rockers - Piper 285/2 cam - Modified head - double valve springs - S/S race valves inlet 1.401 & ex - 1275 pistons +040 I am looking at carb options - which would be best suited to my motor? Car is for road weekend use, so would prefer lower/mid end over top end. I am considering the Twin SUs, either the HS2 or HS4 and also the weber 45 but am unsure of which will best suit. Which exhaust manifold and exhaust system would I need? Would the standard 25d distributor need upgrading? Would you guys have any other recommendations before I pop the motor in?
Answer:
From the sounds of it, you have built a pretty good motor. I would suggest that twin 1 1/4" are a little lite for the job to say nothing about the fuss of keeping twin carbs in sync, etc. Twin 1 1/2 will result in poor bottom-end performance which is not good for a streetcar. The use of a weber is the best option BUT it is not an easy task to fit a manifold that results in any real carb benefits unless you cut into the firewall and then only with the use of a Dyno will you actually get the benefits from a weber. The bottom line for me would suggest you use a single 1 3/4 HIF carb. Good bottom end while not sacrificing top end. check this out: https://www.minimania.com/part/MMKT0400/Classic-Austin-Mini-Hif6-hif44-Carb-Inlet-Manifold-And-Linkage-1275-Motor    

If you have your heart set on a Weber set-up I would suggest:  https://www.minimania.com/part/P4-004/
This weber is far more user-friendly and can simply be bolted on with no dyno tweaking needed.

Mini Mania Tech Team

The Classic Mini Parts and Accessories Experts

 
 
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Related Technical Articles:
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SU CARBS - Dashpot oil.
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This subject is a regular message-board poser. Many of us have touted our preferences and discoveries whilst playing about over the years. One problem with trying to deal with it on the message board is the sheer volume of information offered and available against the time available to post it.
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The basic SU design has maintained the same basic format since it's inception. But modern technology continually sweeps its ever-growing arm across all manufactured products and the SU was no exception.
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Created: January 29, 2000
The HIF-series carburetor differs from the HF-series primarily in: 1) The design and location of the float chamber, which has been incorporated in the body of the carburetor, and 2) The introduction of temperature-sensitive mixture control to compensate for varying fuel densities resulting from changes in fuel temperature.
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