Twin cam, webber rebuild graph

PostPost by: andyj007 » Thu Jul 15, 2021 9:17 am

Recently received my engine back following a complete re build by the awesome Craig beck. you might be interested in looking over the figures and graphs , i know i always am at others :)
It looks absolutely amazing and brand new , my wish was for street engine with about 145bhp .. ended up with 149bhp.
and 126 ft/lb with a nice curve.. should be pretty exciting once back in the print .

Previously i had se head & cams running running stromburgs . now sporting webber head & new 40 webber carbs with craigs street camshafts.


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PostPost by: 2cams70 » Thu Jul 15, 2021 10:21 am

That’s good! - and particularly since he plots the curve down to 2,500RPM. I’d be interested in what jet and Venturi settings were used for the carbs. It would be great if you could share that information
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PostPost by: andyj007 » Thu Jul 15, 2021 11:05 am

thats a good point, i dont have that but will get it.. as it will be good to have in my file...
will be taking it to the rolling road once its in so will no doubt have some tweaks so will get all the details then
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PostPost by: webbslinger » Thu Jul 15, 2021 5:11 pm

Yes, the details of your carb set up would be interesting, particularly when you get it dialed in for the road.
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PostPost by: Slowtus » Thu Jul 15, 2021 5:34 pm

On the subject of Webers, I just inherited this book along with the other bits and pieces stuffed into the Wagon - I had no idea such a comprehensive book existed!

Wonder what else is in there... :D

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PostPost by: andyj007 » Thu Jul 15, 2021 5:47 pm

oooo will serch out that book!
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PostPost by: ericbushby » Thu Jul 15, 2021 6:58 pm

Hi Andy,
Your new Weber 40`s are probably 151 version which will not be in that book, although I think that the only major difference is the air bypass system on the modern ones and most of the rest will be similar.
Loads of them on ebay, but a bit pricey for me. I am thinking charity shop prices.
Eric in Burnley
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PostPost by: Stevie-Heathie » Mon May 08, 2023 9:45 am

My engine has just arrived at Craig Beck for the fast road treatment. I’ve asked for 130-135bhp at the engine, but 145 would be even better.

Please could I ask about reliability 2 years down the line?

Best
Steve
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PostPost by: rgh0 » Mon May 08, 2023 10:09 am

Assuming the build is done properly there should be no impact on engine life for this level of development.

cheers
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