750 sf3 air fuel ratio

Curiosity John,
Do you have a balance pipe between the carbs?
I ask because I have seen engines have funny areas in the fueling and a lot of "standoff" in that area, this has been cured with a large balance pipe between the manifolds.
Quite a strange fuel curve though!

Julian


Ring playing comes naturally to the boys from the "other side" so I hear  :D :D
 
I'm totally confused!  ???

All this banter about oxygen levels and revs but I would just like to say that despite all the technical big words and mumbo jumbo I haven't seen anywhere enough information or intellegent input, beside's Cosis reference to rings, to even hazard a guess.  :D

Aren't we talking an SF3? If so then what were the throttle opening ratios. This is the information needed to try and sort out if the carbs/jetting is the issue.

What is the jetting information, at what stage of the throttle travel did this occur? 

Really guys?  ::) If you can't sort the basics, stick to the bling.

Rod, need to have beer with Cosi.
 
:D miserable bastard!  :P

I hope we are talking full throttle in this instance?
However IF not then problem solved  8)

you clever and miserable bastard  :D


Julian

 
Fitting exhaust temperature gauge to each header should tell if you are in danger of melting a piston? I ran this my first season of racing.
From following this discussion it does seem to hint at exhaust problem. I had similar problem (flat spot, but I didn?t have O2 meters) once from a cracked dislodged straight through "baffle" in an SFC 2/1.
 
Tippie said:
Fitting exhaust temperature gauge to each header should tell if you are in danger of melting a piston? I ran this my first season of racing.
From following this discussion it does seem to hint at exhaust problem. I had similar problem (flat spot, but I didn?t have O2 meters) once from a cracked dislodged straight through "baffle" in an SFC 2/1.

Shouldn't have put a baffle in.
Paul
 
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