TOPIC:

hardrockminer wrote: . The hosing was originally connected to the air box to route unburned gases back into the combustion stream. For some reason they included hoses off two of the carburetor boots. If you've put plugs on all your carb boots then there should be nothing else to do..

Actually, that is almost exactly opposite of how the system works. It is not an EGR system. The system introduces clean, filtered air into the exhaust ports in order to encourage the burning of any unburned fuel and to dilute the pollutants to keep the EPA happy. The reed valves prevent exhaust gasses from entering the system. The vacuum lines connected to a vacuum valve that controlled when the fresh air was introduced to the exhaust. Most folks just connect the two reed valves as describbed, but some folks also thread the ports and install threaded plugs to completely disable the system.

Thanks for that explanation. I just put plates over the ports, and eventually I switched to a '78 head.


What was the purpose of connecting to the carbs?

I think vacuum from the carb is needed to operate the vacuum switch valve.

Good Fortune!

Wow thanks Patton,

Reading the Kawasaki add almost makes me feel like buying a vacuum valve with the hoses and installing it. They are usually available on E-bay. The only thing is that my air box doesn't have the fitting but I know those are available too.

I am hesitant between eliminating everything or going full factory.

I eliminated everything but I also changed the head.

I am thinking about getting rid of them now.

Can't really work on finishing tuning the bike as it's so freakin cold so I went ahead and did the install on the Tarozzi rear sets which came in last week.

I had some worries about being able to fit them as apparently the MkII model was not supposed to fit on a LTD.

The install went fine. Clutch side was basically plug and play. On the brake side, I had to use the original master cylinder shaft as the one supplied was on the short side but aside from that it fits very well and happy.

Stupid question.............. Can you still use the kickstarter with the rearsets??

There are no stupid questions. Actually that was my next thing to check.

I am going to try and let you know. I think it's going to be really close.

If the kickstart is going to hit,I will likely remove it and put an APE cover. Should trim a bit of weight and clean it up but I would much rather keep it.

The kickstart does hit the foot peg just a tad after 90 degrees. Cycles the engine but it does not go all the way down.

Looking at the head I think I found the culprit for the smoke emanating from the head.

Looks to my like the cheap blue cam cover gasket as I could feel traces seeping from it. I ordered an OEM replacement, about 5 times thicker and sprayed it with some Permatex copper gasket sealant, my favorite stuff.

Should be better now. I will go ahead and go through the carbs again. I benched synced them and will undo the bowls and clean everything before putting them back.

Still minus 17C this morning here so I have a bit of time left

So I am ready to put the carbs back on. They are Mikuni VM26 pumpers. I did a full rebuild in September but will clean them once more since they have been sitting for most of the winter. I also am going to rejet them.

The standard is;
Jet Pilot: 15
Main Jet: 105
Jet Needle: Y167-S (5CN18)

I am located 38M above sea level and I usually ride in temperatures of 20C. I have both the stock airbag and K&N pods and a 4 in 1 with a baffle, not very loud.

I figure I need to add +1 for pods, +1 for the 4 in 1 and +1 for for low elevation;

New setting;
Jet Pilot: 17.5
Main Jet: 108 ( I have a 109 with my Keyster kit)
Jet Needle: Y167-R

My Keyster kits came only with Pilot Jets of 15 or 20. Can I put 20's or should I get 17.5 ?

The original part # as per my parts diagram says 92064-1017 and that is a 15 size.

What I found is that the 17.5 is 92064-042 but in all the descriptions is says its for a VM28.

Are they the same ?

Thanks.

Got the answer for the Pilot Jet.

Dimensions;

OAL: 28mm
Thread length: 6mm
Thread width: 4mm

The 17.5 Pilot Jet is part # 92064-042 and fits both VM26 and VM28 so I ordered a set from Z1.