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Solex Carb - Proper Sized Air & Fuel Jets Needed

To: datsun-roadsters@autox.team.net
Subject: Solex Carb - Proper Sized Air & Fuel Jets Needed
From: roadster68 <roadster68@shaw.ca>
Date: Fri, 10 Feb 2006 14:46:10 -0700
Hello Everyone,  I have a '68 2000 with the early version (jet access cover 
w/ 2 screws) of the Mikuni Solex carbs.  The roadster has not run for six 
years but struggled home under its own steam then.  Turns out the valve 
seats in the engine head were totally gone.  Is it possible that the PO had 
to adjust the carbs way off the "norm" just to keep it running?  Engine now 
rebuilt.  New mechanical fuel pump.  Lots of gas now getting in the carbs 
and may be flooding.  I have a rebuild kit for it but would like to hear the 
roadster start w/ the carbs "as is" for a start.  I live in Calgary which is 
at approximately 3750 feet above sea level.  I took the following jet info 
from my carbs and included the owner manual numbers in brackets ( ).  What 
sizes should I run given the elevation?  Main air jet:  0.2 (?), main fuel 
jet: 160 (#180), pilot fuel jet:  52.5 (#60).  I just found the starter jet 
under the float.  Could not read its size.  I did not attempt to take either 
one out yet.  It looks like they could get dirty quicker than the others 
just because they are on the bottom of the fuel bowl.  Overall, the carbs 
look clean.  No carmalized gas that I would have expected from sitting for 
years.  Any and all help would be appreciated.  Thanks!  Larry. 




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