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September 29th, 2008

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Q & A: Shorter Carb Needle / Fixed Distributor Base Plate

Monday December 29th, 2008
Q & A, MGA, MGB, MGC, MG T-Type, Midget
Want to get
info on how to order your tech. manual+ I recently purchased a 1976 MGB
w/ all emissions still connected (sticker under bonnet says,"Conforms to
California regulations", not sure if all US made cars had that.) ,car
has 52,000 mls on it.Engine is running rich (I did veiw your video's on
S-Z carbs + read the some of the tech. Q+A page,THANK YOU!!!),
disassembled carb ,found gas was starting to gel clogging some ports,
ordered parts for rebuild for my S-Z 175 CD2 carb, tag # 54243 (3766).
Received a new metering needle from Moss part# 374-400 #45H, which is
shorter than the needle that was removed. Can you tell me the part
number that is correct for my carb? Carb has been worked on previously.
Also, the carb gasket kit came with two different washers for needle and
seat assembly. One is very thin, the other is a thick metal , which one
is correct? Also ordered a Grose type ball valve. Dist. has a Piranha
electronic ignition conversion kit installed.While disassembling dist.
for inspection + cleaning I noticed the metal base plate for mounting
sensor is fixed + cannot move. Since rod from vac.advance is connected
to base plate it makes vac advance non functioning !!! Is this correct
for conversion kits to do this ??
The length is ok if it is different as long as it
has the same profile. As for the washers they just get used as required.
Your dist. is not correct. The base plate should move. Either a screw was
put in which is too lo... read more