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Car Forum / MINI / October 2003H4 466 carb needle
Don't remember where I got the twin H4 carb that I put on my 1275 mini many years ago ...they seemed to work ok. but started to act funny last week ....Maybe i'll just take a peek inside ... .09 jets and 466 needles Does anyone know where or what these 466's are? patrick <patrick@modmo.com> wrote in news:patrick-5AB01C.21291601102003 @netnews.attbi.com: > Does anyone know where or what these 466's are? ABB perhaps? That's a standard 1275gt needle. "> > > Does anyone know where or what these 466's are? > > ABB perhaps? > That's a standard 1275gt needle. Unless the piston has been changed, they can't be ABB. The H4 would never have used a bias (spring loaded) needle. I can't imagine what a 466 is since it doesn't exist in the SU listings. Maybe a non genuine needle? Or is it a locally made part elsewhere to the UK?  SignatureRgds Steve steve@dsnclassics.co.uk www.dsnclassics.co.uk > "> >> > Does anyone know where or what these 466's are? [quoted text clipped - 6 lines] > 466 is since it doesn't exist in the SU listings. Maybe a non genuine > needle? Ah true, There I go superimposing an S :) > > "> > >> > Does anyone know where or what these 466's are? [quoted text clipped - 8 lines] > > Ah true, There I go superimposing an S :) Yes obviously a non genuine SU needle, I couldn't find it in the listings either....but the number 466 is very precisely etched. Were there other commercial suppliers of SU needles. It would be handy to know its specs. As I would dearly like try one just slightly leaner throughout the range. > Yes obviously a non genuine SU needle, I couldn't > find it in the listings either....but the number > 466 is very precisely etched. Were there other > commercial suppliers of SU needles. It would > be handy to know its specs. As I would dearly like > try one just slightly leaner throughout the range. Most of the aftermarket needle suppliers still use the SU identification. You could measure the existing needle. Just measure with a micrometer at 1/8" intervals along it's length and then you can compare to the SU listings. SignatureRgds Steve steve@dsnclassics.co.uk www.dsnclassics.co.uk > > Yes obviously a non genuine SU needle, I couldn't > > find it in the listings either....but the number [quoted text clipped - 7 lines] > 1/8" intervals along it's length and then you can compare to the SU > listings. Well at some point I was actually standing there with a micrometer in one hand and the needle in the other thinking Oh I can just build a little jig and....then I actually looked at a needle chart..the Dia. of one needle versus one slightly leaner is beyond my ability to reliably measure. (yes I know how to drive a micrometer) And even if got a set of measurements it looked a bit of a trick to find a match. Ok Ok I'll stop whining. So does anybody have a place to start needle wise for: my mini Twin H4's 1275 motor fast road cam slightly massaged head >So does anybody have a place to start needle wise for: >my mini >Twin H4's >1275 motor >fast road cam >slightly massaged head Try WinSU http://www.winsu.co.uk It will suggest a needle if you input the engine spec. It can also find leaner or richer needles to your current one. Scott > >So does anybody have a place to start needle wise for: > >my mini [quoted text clipped - 9 lines] > > Scott Despite winsu being a nice little program, it only provides results for bias needles. There are specs for the fixed needles, but they don't seem to be included in the results. The H4's will require fixed ones. Also, winsu doesn't offer an option for twin carbs. Vizard suggests No3 or 4 needles used with twin 1.5" SU's on a 1275 with modded head and mid-range cam. Looking at the list, a No4 is generally richer than a No3. Got to be worth trying as a starting point, Patrick. SignatureRgds Steve steve@dsnclassics.co.uk www.dsnclassics.co.uk > Despite winsu being a nice little program, it only provides results for bias > needles. There are specs for the fixed needles, but they don't seem to be [quoted text clipped - 6 lines] > > Got to be worth trying as a starting point, Patrick. Hey Steve Thanks for the heads up about the winsu program not being suitable Yes I read Vizards heming and hawing suggestions......but you are right. It's gotta be as good as any. Unfortunately out here, on the left coast of the USA, its sort of Mark I Mini hinterland. Unlikely to find another enthusiast with a box full of su carb needles. So I just checked with Minimania and gasp!! they want $18 US each for them. Let's see two #3's and two #4's better start saving my pocket change. Regards Patrick Oh and for some after dinner amusement, you won't go wrong by checking out my mini. http://modmo.com/gallery/My-Mini Unlikely to > find another enthusiast with a box full of su carb needles. So I just > checked with Minimania and gasp!! they want $18 US each for them. > Let's see two #3's and two #4's better start saving my pocket change. > Regards Patrick That is not far off for genuine SU needles. The UK price is about ?7-?9 each. > Oh and for some after dinner amusement, you won't go wrong > by checking out my mini. http://modmo.com/gallery/My-Mini Does the tangerine orange engine make it go faster?? !!! Particularly like the picture with the Chrysler Imperial.... looks like it's about to devour the Mini! SignatureRgds Steve steve@dsnclassics.co.uk www.dsnclassics.co.uk |
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