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Home > Technical Chat > O.T. Blow through supercharged 1172 side valve

carl talbot

326 Posts
Member #: 1323
Senior Member

I have some basic questions I'm hoping you experienced chaps can help me with.

I Classic Trial a 1953 Buckler MK5 http://www.bucklercars.com/
The plan is to fit a low blow supercharger to the Ford 100e sidevalve engine to give us a bit more power .

Back in the day Shorrocks claimed you could double the power of a standard 1172 sidevalve by fitting one of their kits , utilizing their type C75 supercharger in a suck through set up.

I am looking at fitting an Eaton 45 in a blow through set up .

The thinking is that the Eaton 45 gives approx. same output as the Shorrocks 45cu ins/rev or 750cc/rev

The sidevalve is bored to +60 giving a little over 1200cc , with 7:1 compression ratio .
I have a manifold that takes an 1 1/4 SU , so naturally the Metro turbo carb springs to mind .

questions are : -

Is it possible to bleed off boost [ pre carb ] in a controlled way so that I can get the boost up at lower revs and then hold it relatively constant through the rev range , rather than a general dump system
What are the metro Turbo carbs like for tuning for different capacity engines


cheers
Carl

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