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       #Post#: 100149--------------------------------------------------
       Re: Fuel starvation at high speed.
       By: AlmightyBodgeKing Date: December 14, 2015, 1:46 am
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       Another update:
       She is definately running lean at high rpms with the britpart
       carb.
       Not sure what to try now, I may try using the bottom carb body
       and butterfly from the britpart with the top half of the zenith,
       that way it is essentially the zenith carb and jets, but without
       the gap around the butterfly spindle. Or I may try swapping the
       jets between the two carbs. I have 4 days left at work this
       year, so it could be a nice little holiday project.
       But I did manage a constant 70mph on the motorway, but had to
       have the choke slightly out to do it.
       #Post#: 100150--------------------------------------------------
       Re: Fuel starvation at high speed.
       By: NoelC Date: December 14, 2015, 7:58 am
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       Another thing worth checking is how well screwed together the
       carb is, literally. Pulling the choke out improving things has
       reminded me of a similar experience with the ambulance, being a
       '66 that has a Solex carb (reconditioned by the Carburetter
       Exchange), the screws had all worked loose over a short period
       of time and air was getting past a gasket somewhere. Nipping
       them up cured the problem.
       Personally I wouldn't hold out too much hope a £35 carb,
       especially one from the blue boxed :wanker: would be much cop.
       Even the genuine Zeniths suffered from warping, I always reface
       the body and top on a sheet of glass with wet and dry paper
       before reassembly - it's very noticeable how much that improves
       things.
       How about this?
  HTML http://www.ebay.co.uk/itm/361058427445
  HTML http://www.ebay.co.uk/itm/361058427445
       A far better bet IMHO, and return the Shitpart carb?
       #Post#: 100152--------------------------------------------------
       Re: Fuel starvation at high speed.
       By: AlmightyBodgeKing Date: December 14, 2015, 1:12 pm
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       I'm guessing that eBay part is some kind of ex MOD as it's
       branded as SOLEX rather than zenith.
       Anyway, I took the landy into work today, she definately runs
       lean at high rpms. I also took the zenith body with me and asked
       the guys in the prototype shop if they could do anything with
       it. They made me a new spindle that was slightly oversized at
       the ends and reamed the body to suit. I will be taking her for a
       short spin later and will report back. They even made me a nice
       new gasket. Advantages of working for one of the worlds largest
       automotive suppliers. Ironic that I make my living by squeezing
       as much electronics into cars as possible, but choose vehicles
       with none.
       As for warping, the only time I have ever known this is when
       they have been fitted to earlier motors to replace the solex and
       the plastic spacer has not been fitted under the adaptor.
       Either way, the britpart will be going back.
       #Post#: 100161--------------------------------------------------
       Re: Fuel starvation at high speed.
       By: AlmightyBodgeKing Date: December 15, 2015, 2:22 am
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       [quote author=NoelC link=topic=9549.msg100150#msg100150
       date=1450101493]
       How about this?
  HTML http://www.ebay.co.uk/itm/361058427445
  HTML http://www.ebay.co.uk/itm/361058427445
       A far better bet IMHO, and return the Shitpart carb?
       [/quote]
       Thanks for the linky, I did however buy one of these
  HTML http://www.ebay.co.uk/itm/ZENITH-36IV-CARB-BASE-UNIT-29MM-CHOKE-N-O-S-/331713227063?hash=item4d3ba62937:g:HOoAAOSwPcVVsJOs
  HTML http://www.ebay.co.uk/itm/ZENITH-36IV-CARB-BASE-UNIT-29MM-CHOKE-N-O-S-/331713227063?hash=item4d3ba62937:g:HOoAAOSwPcVVsJOs
       Seems the same thing, but for 8 quid I figured I would have one
       as spare as it seems a worn spindle hole is the only thing the
       rebuild kits don't cater for.
       Anyhow, I took her out for a quick spin last night and she seems
       much better with the zenith carby back on. lovely smooth idle at
       450 rpm and nice acceleration and no leaning out at high rpms.
       Unfortunately I am in the modern crap today as I have school run
       and things to do after work.
       Fingers crossed for tomorrow, hopefully she is there now.
       Thanks for all the help everybody.
       #Post#: 100163--------------------------------------------------
       Re: Fuel starvation at high speed.
       By: AlmightyBodgeKing Date: December 15, 2015, 3:48 am
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       one more thing to note is that I noticed a lot of free play in
       the accelerator pedal after switching back to the zenith carb.
       looking at this it seems that the throttle linkage was adjusted
       so that the throttle spring was causing the rod to push hard
       against the carb butterfly rod. Maybe this was the cause of the
       spindle wear to begin with. I have adjusted this so there is now
       only a couple of mm free play, the pressure put on the spindle
       is now far less.
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