7
7981GS
Guest
Made a little progress today after getting Jenny situated.
Initial peek into the float bowls:
Hard to tell but this enricher circuit was plugged solid.
A piece of fishing line and some brake cleaner opened it up:
All four carbs are supposed to have a cap on this port in this application (Another vacuum leak):
Under those caps, without the diaphragm/slide installed, you see where O-rings are supposed to be.
One was missing and the remaining three looked like this:
Harbor freight generic $3.00 O-ring set to the rescue! The smallest one, RO-1 was a perfect fit!
The 30 pilot jets that came out, hard, are way too small for this engine.
As I am going to remove some of the smog crap, and didn't have the 37.5's that I thought I had,
I chose to install 40's. The 120 mains are being replaced with 122.5's.
I put anti-sieze on the threads of both the pilots and mains.
This is what they look like with the new jetting:
I was tossing around the idea of changing the needles with some Dyno jet ones that I have on hand and decided to
up the needles .49mm with 3mm flat washers instead. (Mic them! I had from .46-.54mm thickness washers.)
The stock plastic spacer Mic'd out to 2.52mm so now the needles will be 3.01mm up.
Going for some rides with Tom MLC tomorrow so I may not get back to them.
Initial peek into the float bowls:
Hard to tell but this enricher circuit was plugged solid.
A piece of fishing line and some brake cleaner opened it up:
All four carbs are supposed to have a cap on this port in this application (Another vacuum leak):
Under those caps, without the diaphragm/slide installed, you see where O-rings are supposed to be.
One was missing and the remaining three looked like this:
Harbor freight generic $3.00 O-ring set to the rescue! The smallest one, RO-1 was a perfect fit!
The 30 pilot jets that came out, hard, are way too small for this engine.
As I am going to remove some of the smog crap, and didn't have the 37.5's that I thought I had,
I chose to install 40's. The 120 mains are being replaced with 122.5's.
I put anti-sieze on the threads of both the pilots and mains.
This is what they look like with the new jetting:
I was tossing around the idea of changing the needles with some Dyno jet ones that I have on hand and decided to
up the needles .49mm with 3mm flat washers instead. (Mic them! I had from .46-.54mm thickness washers.)
The stock plastic spacer Mic'd out to 2.52mm so now the needles will be 3.01mm up.
Going for some rides with Tom MLC tomorrow so I may not get back to them.