Carb Overhaul Kits

maverick · #1 21-04-09, 00:03

Are Ford carb overhaul kits available in the UK mines a No 94 and do they come with a economizer valve in the kit ? Also need a pair of water pumps or are the overhaul kits worth a go at, will have to look stateside otherwise.

Alex Blair (RIP) · #2 21-04-09, 03:01

Quote:

Originally Posted by maverick

Are Ford carb overhaul kits available in the UK mines a No 94 and do they come with a economiser valve in the kit ? Also need a pair of water pumps or are the overhaul kits worth a go at, will have to look stateside otherwise.

Economizer valve...???In a flat head Ford...??
(An economizer valve is a valve in the carb that injects extra fuel into the engine above 75% throttle,to add extra power and keep the valves cool in a climb..when extra power is needed)..
Usually found in aircraft carburators..

maverick · #3 21-04-09, 11:08

Sorry just going by what it says in my MB-F1 manual 9904 Valve - Economizer !

Alex Blair (RIP) · #4 21-04-09, 13:14

Quote:

Originally Posted by maverick

Sorry just going by what it says in my MB-F1 manual 9904 Valve - Economizer !

Alan..
Don't mean to be funny but never heard of it and I don't have an MB F1 any more ...I wonder if that valve had something to do with the Arctic winterization kit...??
Have to get The New Mr Manual to look that up..
It's a bad day when I can't learn something new..Thanks for bringing that up..Maybe we can all learn from it..
Red Faced Al..

Mike Kelly · #5 21-04-09, 14:22

It appears to be a contradiction at first ..a valve that allows more fuel into the flow, being called a economiser .

I know the series 1 Land Rover Solex PBI-2 has one , it operates on a vacuum principle, it opens/closes according to the vacuum present in the inlet manifold . A rubber diaphram is ported to the inlet manifold and a valve in its centre , with a spring , opens with low vacuum present. Something along those lines anyway !

cletrac (RIP) · #6 21-04-09, 14:54

I always thought that any old 94 type carb had an economizer valve. It opens up another passage when the vacuum drops and more fuel is needed. The economizer bit is for when the passage is closed and you get better economy. All Holley carbs use them too. The valve serves the same function as the metering rod setup on Carter and Rochester carbs.

Paul Singleton · #7 22-04-09, 04:17

I always called the valve in question a power valve.
Here is a link to an exploded drawing.

http://www.vanpeltsales.com/FH_web/F...rd1938to48.jpg

Paul

Lynn Eades · #8 22-04-09, 10:23

Paul, I see your "official" picture has it labelled as an "economiser" valve.
Alex. I thought you were akin to God, but it apears you are a mere mortal.
If you do a google search, you will find they are commonly called an economiser valve.

Tony Smith · #9 24-04-09, 08:46

The original Economiser or Power valve used in the Holley 94 Carb opened at 7.5in Hg vacuum. These Power valves are identical to the current valves used in modern Holley Carbs (eg Holley 650, 750 Quad carbs, etc) and are available nowadays in a variety of vacuum ratings, or even as a blank-off valve that doesn't open. They come in 2.5in Hg to 10.5in, and going to a 5.5 or 6.5 is handy to eliminate valve recession and burnt valves with modern unleaded fuels, but fuel economy will suffer, and if you should be running twin carbs on your Ford then going to 4.5 will be necessary to get them to open at all!

BTW, if you should also need Main Jets for your Holley 94, these are also identical to the Modern Holleys (and therefore readily available), and are a .051 size as standard.

maverick · #10 30-04-09, 23:25

Had to order the carb overhaul kit from Macs autos in the States still need a oil filter and head gaskets dont know if i can source in the UK as yet. Did manage to find a NOS contact set on ebay tho, and have got a quote to refurb the waterpumps.

S LATHERON · #11 01-05-09, 00:49

Hi Alan
Are you talking 21 stud engine block AKA pilot/ uk built engine
Or
Mercury 24 stud.
If 21 stud head gaskets come up on Ebay fairly often and not over expensive.

Regards stephen.

Tony Smith · #12 01-05-09, 03:57

Quote:

Originally Posted by S LATHERON

..... head gaskets come up on Ebay fairly often and not over expensive.

Regards stephen.

So indeed do the Carb kits, quite comprehensive: Example

maverick · #13 01-05-09, 10:49

Hi Steve / Tony thanks for the input pretty sure mine is 24 stud out of a carrier with cast iron pistons in i believe, but i will keep a eye on ebay. To be fair the postage from Macs in the USA wasn't as bad as i thought it might be but so far i only ordered a carb and fuel pump kit. Dont suppose anyone knows a UK part No for the Fanbelts ?