9 replies to this topic

[D_Allen]

just got this weber carb and i was wondering if anyone could help me identify it and weather it would suit my car. there is no model number on it that i can find at all

http://oi50.tinypic.com/jhx5hz.jpg

http://oi47.tinypic.com/jiz2xi.jpg

http://oi46.tinypic.com/2mooy7r.jpg

http://oi50.tinypic.com/2eq7t3t.jpg

any help at all would be appretiated

[KernowCooper]

Its a Weber 28/36 and is used and rated by Vizard in the yellow bible, I used to run one on a 998 Cooper a few years back and it works quite well once correctly jetted, What size is your engine? if its a Std 1275 or less then it would be suitable, if you have a modded 1275+ you'll get more performance from a HIF44

[Cooperman]

Mark, what inlet manifold did you use with the 28/36 Weber? I must say the 28/36 was a great carb on the old Cortina GT and should also be good on the Mini so long as the manifold is well-designed. I know when I changed from a 28/36 to twin 40DCOE's on my old Mk.1 GT there was an improvement, but not as much as I expected even though I had a Cosworth A2 cam and a 'works' rally head. It used a hell of a lot more petrol with the twin 40's though!

[D_Allen]

just got a 998 so it sounds like it will be good. but thanks everyone been a gret help. couldnt find any info about it at all.

[KernowCooper]

Yes I have tried it and not going by the book, the 28/36 with 26/27mm chokes flows 225cfm and a Hif44 flows 240cfm, and as you know cfm depends a lot on the cylinder head/valves and its restrictions and the type of manifold fitted. My 998 Cooper was better on the 28/36 than the 1292, but the Cooper was standrd and HS2s The 1293 modified.didnt and I changed to a 45DCOE.

[KernowCooper]

just got a 998 so it sounds like it will be good. but thanks everyone been a gret help. couldnt find any info about it at all.

Should work very well on the 998 engine when jetted correctly.

[Cooperman]

Yes I have tried it and not going by the book, the 28/36 with 26/27mm chokes flows 225cfm and a Hif44 flows 240cfm, and as you know cfm depends a lot on the cylinder head/valves and its restrictions and the type of manifold fitted. My 998 Cooper was better on the 28/36 than the 1292, but the Cooper was standrd and HS2s The 1293 modified.didnt and I changed to a 45DCOE.

I've asked Mark what manifold he used with his 28/36.

[KernowCooper]

I understand that there were several verions of the 28/36 manifold available at the time, and the one in the photos in D Allen post was with the carb facing the correct way to produce power, the other manifolds put the float chamber on the n/s which could cause fuel surge and one other had the manifold setup in relation to the chokes.and needed modifying internally to increase its cfm
Mine was as per D Allens.

Edited by KernowCooper, 15 March 2013 - 06:03 PM.

[creakyjaws5533]

Make sure it's jetted correctly mine isn't and is quite a nightmare worth doing it properly as the previous owner didnt :L

[Bungle]

you can get all the bits for rejetting or rebuilding from eurocarb