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Carb balancer / syncrometer for 40s


Boombang

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Rather than forking out for a new one, wanted to see if anyone had a used one?

 

I don't mind borrowing if someone would rather lend that sell.

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you can borrow mine if you want to come over and collect

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I want one too

Cheapest ive seen is ebay for £30

Hopefully santa will bring me one

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nice piece of kit easy to use

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I forked out a while back , from fast road cars outlet on ebay.

Very glad I did , makes life so much easier

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If you have large dia trumpets you may need to use a plastic funnel to reduce dia etc

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Bought from JJC on eBay and a pucker German made STE job turned up.

30 seconds later got it balanced, 5 minutes later it's idling like a dream all the way down to a solid 900rpm. Within 10 minutes I've identified the pump jets are a touch large, swapped them out and got it as good as I can with the jets I have.

Want to try a slightly smaller idle or leaner idle holder, with a slightly smaller pump jet, but it's certainly close enough to hand over to the professionals and get on the rollers.

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Money well spent. :-)

Yes, but its proved that there are differences between the chokes in each carburettor.  Has anyone got a solution to that?  The bible doesn't seem to cover it

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Either leaking or twisted spindle ? Is it a significant amount ?

Or leaks in manifold etc of course.

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I use this instrument http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=MANOMETER4&CategoryID=2&PartsectionID=59 bought from Eurocarb in Reading. If you have the vacuum take-offs it's quicker than measuring individual venturis one at a time.

 

New%20Manometer.jpg

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That's posh.  Eurocarb do have some good kit

 

Either leaking or twisted spindle ? Is it a significant amount ?

Or leaks in manifold etc of course.

I think its been the same from new.  Meter reads 5 on one choke and 7 on the other.  Both butterflies are slightly open

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I do have a similar mercury set but webers don't always have takeoffs .

5 and 7 seems a fair bit: have you checked the both butterflies sit fully closed when they are supposed to be.?

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