mtt.tr
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What's the alternative?
By ear?
- Thread starter W.olly
- Start date
By ear?
Sigh ^^
mtt.tr
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I know being Welsh makes you awkward but please elaborate?
Your reply initially was far to mystic.
I know attendees to this site like to over complicate, but flippin' 'eck.
If you've never done it with a bit of tube, try it. If you can hear the hiss, its surprising accurate way to do it - my mate turned up with a set of those synchrometer balancer and couldn't tell any difference.
Been playing with twin carb set ups, Webers, Solex, Dellorto, and SU since I was 18, 34 yrs ago (crikey
), as well as a couple of Jenvey throttle body set ups - and assuming the jetting is correct/needles etc, I've managed so far without anything other than the hose idea - cars have been checked and tuned on rolling roads, but I can't recall anyone complaining my balancing was off.
If you've never done it with a bit of tube, try it. If you can hear the hiss, its surprising accurate way to do it - my mate turned up with a set of those synchrometer balancer and couldn't tell any difference.
Been playing with twin carb set ups, Webers, Solex, Dellorto, and SU since I was 18, 34 yrs ago (crikey
), as well as a couple of Jenvey throttle body set ups - and assuming the jetting is correct/needles etc, I've managed so far without anything other than the hose idea - cars have been checked and tuned on rolling roads, but I can't recall anyone complaining my balancing was off.
roofman
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Try a vacuum gauge and then tell me a rubber pipe stuck down your lug hole is betterI know attendees to this site like to over complicate, but flippin' 'eck.
If you've never done it with a bit of tube, try it. If you can hear the hiss, its surprising accurate way to do it - my mate turned up with a set of those synchrometer balancer and couldn't tell any difference.
Been playing with twin carb set ups, Webers, Solex, Dellorto, and SU since I was 18, 34 yrs ago (crikey
..carbs not balanced will not show up on a rolling road as its normally full throttle and main jets feeding fuel and not pilot jets.
slim_boy_fat
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mtt.tr
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I know attendees to this site like to over complicate, but flippin' 'eck.
If you've never done it with a bit of tube, try it. If you can hear the hiss, its surprising accurate way to do it - my mate turned up with a set of those synchrometer balancer and couldn't tell any difference.
Been playing with twin carb set ups, Webers, Solex, Dellorto, and SU since I was 18, 34 yrs ago (crikey
Even with non stop tinnitus.
I'll balance my 4pot Kawasaki then I'll put the gauges on. I know my ninja is terrible with the slightest imbalance
Not when mapping for trialling use . . . lots n lots of partially open, in slightly increasing increments . . .Try a vacuum gauge and then tell me a rubber pipe stuck down your lug hole is better
Gauges and sunchrometers things have been slapped on mine by amateurs and professionals - and no-one has made any adjustments, including those being paid for their time, so I reckon its as close as is needed.
Yeah, I've got the same issue - maybe spent too long as a youth with an angle grinder inside the wheel arches of old cars . . .
Burdekin
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I don't know these carbs but I use a gunson carb balancer for SUs etc. By the looks a adaptor probably required.
Morris
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I think the references to vacuum gauges are meant to be to flowmeters, a vacuum gauge is useless with a manifold with a balance pipe.
I've just done the twin SU's on my tuned Standard 12 engine using the mk 1 ear 'ole (with tinnitus), works fine.
I've just done the twin SU's on my tuned Standard 12 engine using the mk 1 ear 'ole (with tinnitus), works fine.
and used to tune my SU carbs on my Rover V8 with it plus other twin carb set ups.
W.olly
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God i love this forum ha ha, you guys are mint 
always a good bit of banter goes on and different ideas.
Ill be trying the hose way guys, the way the intake is as it os must be the way these carbs are known to be a pain to balance properly with the kits as they dont go into the inlet due to the fittings in the way to seal around it enough., so an ear is good enough,
As always thanks folks for the help.
always a good bit of banter goes on and different ideas. Ill be trying the hose way guys, the way the intake is as it os must be the way these carbs are known to be a pain to balance properly with the kits as they dont go into the inlet due to the fittings in the way to seal around it enough., so an ear is good enough,
As always thanks folks for the help.
Blobber
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Ive never had much luck with the tube in the ear thing, I like the vacuum gauges but its not always easy or convenient to connect them, bought this ages ago and it seems to work well and they do different sizes of rubber ends to suit various openings
When I started my apprenticeship at a small garage in 1972 we used a top radiator hose then we got the Crypton gauge like in ZZ's pic. It gave you more confidence that you had it right. That was all fifty years ago but I remember that just as important when doing that job was to undo one of the linking throttle rod clamps so that the carbs were completely independent before making any adjustment. When you had finished and locked up the rod clamp again you had to check that the two throttles were exactly in sync with each other (opening at the same time) because it was quite common to find that one carb would be opening fractionally before the other and it was this that made the real difference.
Burdekin
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Also worth noting I predominantly use a O2 wideband sensor to set idle mixture, SUs should be about 13.2:1 air fuel ratio at idle. I also have a multimeter with a tach option, hooks over a spark plug lead. Maximum idle revs happen at about 12.7:1 air/fuel ratio so I wind down the jet until no increase in revs and then wind up a couple of flats and that should be pretty darn close to 13.2:1.
My hearing is rubbish so I like gauges.
My hearing is rubbish so I like gauges.
