Special tuning H4 carbs

General Chat with an emphasis on BMC Minis & Other iconic cars of the 1960's. Includes information on MK1 Action days.
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Toby
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Re: Special tuning H4 carbs

Post by Toby »

I have posted a picture of my NOS fitting kit in the past:

viewtopic.php?p=66667#p66667
jaknight
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Location: South Lyon, Michigan USA

Re: Special tuning H4 carbs

Post by jaknight »

Nick, what type of cleaner did you use on the on the carbs ?? The cast aluminum is very clean and bright.
I have used carb cleaner in a 2 gallon pail from the auto parts store.
Thanks
Jim
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timmy201
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Location: Australia

Re: Special tuning H4 carbs

Post by timmy201 »

I found Mark had a clearer scan of the H4 sets in AKD3509, starting at page 450
https://mk1-performance-conversions.co. ... KD3509.pdf

Another quick question for the experts - did any of the special tuning sets have the "fast idle" parts like these? I can't see them in any of the parts catalogues for the mini setups. I assume on a racing mini you'd just hold the throttle down till it warms up
wzx-1587_1.jpg
And sorry for all the questions, apparently "H4" is an unsearchable term on the forum so a bit tricky to find old info
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Toby
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Re: Special tuning H4 carbs

Post by Toby »

The fast idle parts weren’t on the ST setup
cmiller
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Re: Special tuning H4 carbs

Post by cmiller »

I found this to be a very interesting thread and topic. I have what appears to be now a set of the works H4 carbs. A few observations are that it has the 661 manifold the 4814 and 4815 float bowls. The fast idle cam parts were not on the carb and the carb body does not even have the boss and tapped hole for the pivot pin for the fast idle cam. I always found this strange. It does have the choke lever lifting wires that attach to the choke cable.
Just a few bits of info to further identification what carbs you have.

Chris Miller
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