Kawa 1100 mods?

[Quinc]

Pulling the 1100 out of the hull now and wondering if there is anything I should do to it while I have it out?
So far the only thing I can come up with is deleting the temp sensor so it has the timing advance.

Would I see much of a gain if I opened up and polished the exhaust mani, or anything else that wont take much money?

 

[evo8coop]

dry the pipe out... block off the top fitting on the top of the chamber.. and install a 1/4 fitting in the stinger and add a jet. get rid of the cooling line to the stator. i assume this motor is going in a b1? or sj??

 

[motoman3000]

I used this thread http://www.pwctoday.com/showthread.php?t=383038 to guide me through the dry pipe mod. I never owned a tap/die set but its easy to do.

ps* Where is the temp sensor on these and how do u delete?

 

[Quinc]

dry the pipe out... block off the top fitting on the top of the chamber.. and install a 1/4 fitting in the stinger and add a jet. get rid of the cooling line to the stator. i assume this motor is going in a b1? or sj??

What line goes to the jet in the stinger?


It is going into an ZXI 1100 hull for my dad. Eventually it will probably end up in a blaster.

 

[Quinc]

I used this thread http://www.pwctoday.com/showthread.php?t=383038 to guide me through the dry pipe mod. I never owned a tap/die set but its easy to do.

ps* Where is the temp sensor on these and how do u delete?

http://www.pwctoday.com/showthread.php?t=294519
1. cut the temp sensor it is located on top of the batt. and attatch the cables together. this will give you 3 degree timing advance up to 5000 rpm free

 

[motoman3000]

I tapped the pump for dual cooling. The new 3/8 in from pump goes to manifold. Put a tee before the manifold and run to stinger.
Make sure to put filter/ separator before attaching to stinger to prevent clogs


Sent from my iPhone using Tapatalk

 

[Quinc]

does anyone know where i can get the adapters for the klein cdk2 carbs so i can run a/m velocity stacks?

 

[Quinc]

pulled the exhuast mani off and it has flat pistons that are .50 over. 1153cc ish? also the exhaust ports are ugly! horrible casting marks etc. so my next question is if I will see any noticeable gain cleaning those up and polishing them? it is easy enough but i dont want to mess with taking the cylinders off unless it is eeally worth it..

 

[motoman3000]

Maybe some useful info

http://www.pwctoday.com/showthread.php?t=5539

 

[fast superjet chase]

Gasket match the exhaust on the cylinders and on the mani and polish them makes a huge difference and run a timing advance plate and jump the temp sensor. The three degrees is only to 3000rpms and they hit that fast I've been running mine that way for a while no issues. Are you looking at running pump gas or race gas cause added compression helps these things a lot

 

[Quinc]

I opened the exhaust mani up .5mm made it smooth and polished it down to mothers mag. Going to tackle the cylinder ports next. Casting marks on these things are really bad. Also the carbs are CDKII, They measure 42mm-ish up top and 38mm on the bottom. Does that make them 38s or 42's?

The compression in each cylinder is 165psi. I am not sure I can go much higher then 3 degrees without needed better gas. Can only get 91 here in California. Do velocity stacks or reed spacers make much of a difference on these? Going to go with OEM or Boyseen reeds.

 

[Quinc]

Gasket match the exhaust on the cylinders and on the mani and polish them makes a huge difference and run a timing advance plate and jump the temp sensor. The three degrees is only to 3000rpms and they hit that fast I've been running mine that way for a while no issues. Are you looking at running pump gas or race gas cause added compression helps these things a lot

Is there any benefit in opening up the intake manifold at all with the stock cdk2 carbs?

 

[Quinc]

Exhaust mani done:

Doing the exhaust ports next:

 

[fast superjet chase]

The best thing you can do for intake is get an aftermarket one and run mikuni's

 

[Quinc]

The best thing you can do for intake is get an aftermarket one and run mikuni's

I over spent my budget building my SJ and Blaster.. So trying to spend the least amount of money possible. So far these are the only things I am looking to buy. Or if I am better off putting that money elsewhere let me know.

• Primer kit 35$
• Oil pump block off kit 15$
• New gaskets for intake
• R&D flame Arrestor 100$
• Depending on how the reeds look, Boyseen carbon reeds 85$

 

[Big Kahuna]

I opened the exhaust mani up .5mm made it smooth and polished it down to mothers mag. Going to tackle the cylinder ports next. Casting marks on these things are really bad. Also the carbs are CDKII, They measure 42mm-ish up top and 38mm on the bottom. Does that make them 38s or 42's?

The compression in each cylinder is 165psi. I am not sure I can go much higher then 3 degrees without needed better gas. Can only get 91 here in California. Do velocity stacks or reed spacers make much of a difference on these? Going to go with OEM or Boyseen reeds.

I guess you have never heard of OEM Taper Bored Carbs.............. That is what you have. What are you calling a velocity stack??? The only true velocity stacks use to be the old West Coast Funnel shaped Flame Arrestors. They were great for sucking in water and destroying an engine unless you could keep the engine back dry. Only made for Mikuni 38's and 44's.

 

[Quinc]

I guess you have never heard of OEM Taper Bored Carbs.............. That is what you have. What are you calling a velocity stack??? The only true velocity stacks use to be the old West Coast Funnel shaped Flame Arrestors. They were great for sucking in water and destroying an engine unless you could keep the engine back dry. Only made for Mikuni 38's and 44's.

Believe it or not velocity stacks are still being made everyday. I was thinking either motorcycle velocity stacks ( a hell of a lot cheaper) or something like this:

 

[icecoled007]

Timing advance plate makes a big difference IMO. Lightened flywheel from #Zero is also good

 

[Big Kahuna]

Good luck getting those to fit. Since those are 4 stroke throttle bodies. All you need are some keihin 42mm std adaptors and a set of 3 K&N pro series flame arresters.

 

[Quinc]

just need to find some adapters. these are less then 10$ on amazon.