I am after some suggestions on chokes and jets for a weber 45dcoe fitted to a 1275 . Engine modifications are unknown as i bought the car with this setup. I am guessing that the engine is fairly standard other than the camshaft which is reasonably lumpy and causes the centre two cylinders to run laim at idle. That might give the doc and others a clue.

Also wandering which books have the best weber information in them regarding jetting and repairs etc. I have seen the doc recommend one or two books but i can"t find the information.

All help and suggestions appreciated

Keith

Maybe showing some respect for the manufacturer would not go astray by first getting the spelling right- Weber, not webber.
Just a suggestion.

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1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

I have a few Weber and Dellorto books.
By far the best I found is `How to power tune Weber & Dellorto carburettors' by Des Hammill.
It has lots of jetting info for A series, which I found very close to correct on a few engines I built.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Howdy Keith,

Another good book I have, is the Haynes TECHBOOK Weber Carburetor Manual... It gives a little advice on tuning for differenet builds,,, but it also covers in depth the inner workings and how to over haul a weber... it also covers SU's, Strombergs, and Zenith. Its a great book.

Having said that, I have also seen the book that the Doc has mentioned and it looked good. But given the Doc's wrap, I think I will buy it the next time I get the chance. Des Hammil's books are alway pretty good, very helpful.

Woop, almost forgot,

the other good book I have (not sure if its in print anymore but you my track down at a car show 2nd hand..... could be in print?) is called "Weber Carburettors by John Passini, 2. Tuning & Maintenance",,, this book is an oldy but a goody... Total Gem!

Des Hammill's Weber book covers complete teardown, identification, rebuild and tuning for all Weber DCOE and Dellorto DHLA sidedraft carbs.
It is a very good read, unlike my other Yank Weber book.

His book "How to power tune the BMC/BL/Rover 998 engine" (also the 1275 version) has basic jetting info for Webers and Dellortos too.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Thats true, I felt it was a little vague though (EDIT-> you did say basic I guess) . I reckon the other by Des that you just mentioned sound like a winner (a winner if you are just after info on carbies that is). Sounds like it covers the same info that I have in 4 seperate books ,, but probably a little newer than 1973

I'll definantly be getting it. Good one Doc

First thing i`d do is compression test the engine

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Thanks for the replies Doc and Phat Kat - Des Hammills book is ordered and in the post.

Mat the compressions are all even and good, no air leaks either. The engine just idles inefficiently with power balance down on no 2 and 3 cylinder, fine at revs. I am sure i have read somewhere that the doc reckons it is certain cam grinds and shared ports.

AEG163 sorry for upsetting you -- it was only a spelling error!

My 1360 (with 45 Dellorto, 38 chokes in) sounds fine at idle (considering it's running a bathtubbed head,`sprint spec' cam, and 20 degrees advance at idle) you wouldn't know that #2 & #3 aren't pulling their weight until you pull the plug leads off.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.