[Mgs] MGB driving me nuts

[Bernd]

Hello:

the floats are plastic, and the grose jet are brass, I just pulled them to make sure, I may go back to the needle instead of the grose jet and carry the grose jet as a spare, if I carry any more spares I have a junk yard in my trunk.

B.
71 mgb
---- Max Heim <max_heim at sbcglobal.net> wrote: 
> The floats in the SUs -- are they original brass ones, or white plastic
> replacements?
> 
> After I installed Grose-Jets, I found that the brass floats would vibrate at
> the engine's resonant frequency (around 62mph) and "dribble" the balls in
> the Grose-Jet like a basketball, causing the engine to sputter and surge.
> Switching to the plastic, non-adjustable floats fixed the problem.
> 
> Switching back to regular needle valves would have worked, too, but the
> reason I switched in the first place was I was having chronic problems with
> debris.
> 
> 
> --
> 
> Max Heim
> '66 MGB GHN3L76149
> If you're near Mountain View, CA,
> it's the primer red one with chrome wires
> 
> 
> on 8/28/08 8:36 AM, Bernd at 1971mgb at cox.net wrote:
> 
> > alright folks, my 71 "B" is acting up on me, within the last month there have
> > been three occasions where I'm driving along (say at about 60) suddenly I get
> > a whiff of gasoline odor, then the car's RPM drops and the car starts surging.
> > When I pull over to the side of the road the car idles at about 500 and tries
> > to die out, I've checked the dampers in the cabs, the weird thing is when I
> > press the dampers in the engines RPM speed up (should be revere se) I've
> > checked the floats, I have Grosse jets and they are free, I've change to my
> > good spare distributor  on the side of the road, after doing all those things
> > the car starts to run fine again, then a few days or a week later it does it
> > again, I'm stumped, any help?. should I look toward the fuel pump?
> > Bernie 
> > 71 MGB
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