I mis-replied; I thought there was a problem before but you feared it might
still be there even though you hadn't installed them yet. Please be aware
that there HAS to be some leakage there. If it was perfectly sealed (no
air got through) the throttle shafts wouldn't turn at all. What you're
experiencing may be normal or might not be. If you're comfortable tuning
them, or have someone else to look at them, then I'm sure you're right, but
if you're not sure, then let someone else have a try to see if it's normal
before shipping them back.
At 02:48 PM 8/17/2002 -0400, Brian Hollands wrote:
>Contact Z therapy. That is a very common problem on SU's. The fix is easy
>and several company's and at least one individual (forgot who) on this list
>can do it. Basically it consists of new or modified throttle shafts and
>bushings put into the carb body to restore the clearance and end the vacuum
>leak. If ZT rebuilt them and there's a problem, they shouldn't give you any
>flak about fixing the issue. You'll have to send them back though.
>
>Brian '69 2000
>Tampa, FL
>http://web.tampabay.rr.com/oilleak/
>
>-----Original Message-----
>
>Hey everyone, I have an SU carb tuning/rebuild problem. I spent hours
>tuning my carbs, but something just wasn't right. I finally found that they
>are sucking air where the throttle rod passes through, on either side of the
>butterflies on both sides (four leaks in all). Z-Therapy rebuilt the carbs
>about a year ago; I'm just now installing them. I'm woried that the
>alluminum carb bodies were too worn out to rebuild. Is this a common
>problem with rebuilding SUs? Is there a known fix for this (don't say
>Solex, I can't afford it)? I haven't contacted Z-Therapy yet. I'm sure
>they'll be helpfull, but I'd like to fix this problem without shipping the
>carbs back.
>
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Adam Bradley
'70 Datsun 1600 Roadster SPL311-28181
'67 Datsun RL411 SSS sedan RL411-11321
'66 Datsun PL411 sedan PL411-022447
http://www.picturetrail.com/abend
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