[T3] Loss of power at speed- could it be overheating- update

[Bobsnotch at aol.com]

In a message dated 11/2/2010 3:32:30 P.M. Eastern Daylight Time,  
Markse at mo-sys.com writes:

Jim  Wrote: "I'm not a carb guy, so I surprised to hear that things are 
so  tight in there"

Well Jim it turns out it's not meant to be so  tight-  I have a 
confession to make and I really have been very dumb  :-(

When I first bought my car ~10yrs ago I did a lot of work on it to  get 
it roadworthy (worth doing- it hasn't failed an MOT since :-))
Part  of the work I did was to rebuild the carbs. Unfortunately the kits 
I  bought didn't include the diaphragm for the vacuum release of the 
choke  mechanism so I couldn't repair that. So I started collecting 
spares- lots  of them. I ended up with a right mixture of carbs- most 
slightly different  from one another. There seem to be 2 main varieties: 
early and late. The  early ones have the main jet accessed from the side 
of the carb body,  while the later ones are accessed from the end of the 
carb bowl. Here's a  pic of the  types:
http://www.flickr.com/photos/37269790@N00/5140677190/#/photos/37269790@N00/5
140677190/lightbox/

They  also have different floats! The early have longer more conical 
floats  while the later have shallower floats to clear the housing for 
the main  jet:
http://www.flickr.com/photos/37269790@N00/5140677186/#/photos/37269790@N00/5
140677186/lightbox/

So  guess what- I have the early floats in my later carbs!! :-(
And I have had  them that way for many years and been 
worrying/complaining about the poor  mpg I get all that time!
What an  idiot.
Mark





Mark, nice job of searching out your problem. I've had problems with the  
needle and seats that come in the kits, but never really knew there was a  
difference in floats (never really looked at them that much). I think once you 
 get the correct parts gathered together, it should run very well. : ) 
Again good  job.  

Bob 65 Notch  S with sunroof and IRS (Krusty)
71 Notch (Krunchy)
64 T-34 Ghia  (Wolfie)
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