which exhaust?

[Jvacustoms]

Originally Posted by Water Warrior

A mini Roots charger would probably work well until the engine turned to slag. I would have serious doubts about the smaller oil volume and cooling capacity of the GZ. But go for it. The results could surprise all of us.

If i added roots charger i would add a small electronic oil pump and a oil cooler to the front to not only increase cooling but also volume so that the engine didn't over heat... as well as run a small electric fan in front of the oil cooler for the periods of time that the bike be at idle. I was thinking that would be the most effective way to increase power to such a small displacement engine, however the Piston and cylinder walls then become an issue as they aren't made for such pressure or wear. I do however think that it would do a good deal or improvement to current torque and speed attributes. It is something I am going to try to run in a cad cam engineering program to see the faults if I can get the information right I can test it there first with out the money. to see if it is greatly flawed or if it is a feasible risk.

[Water Warrior 2]

You are way ahead of me with the thought process. For cooling you could use surplus 12 volt computer fans. Little guys in a square housing. I put one on a Yamaha DT 200 years ago to cool the single radiator for a friend. 35 cubic feet of air per minute did wonders for the engine temp. A really cheap mod.

[Jvacustoms]

Originally Posted by Water Warrior

You are way ahead of me with the thought process. For cooling you could use surplus 12 volt computer fans. Little guys in a square housing. I put one on a Yamaha DT 200 years ago to cool the single radiator for a friend. 35 cubic feet of air per minute did wonders for the engine temp. A really cheap mod.

For the fan i actually was looking at a 12" electric 12v radiator fan with a temperature switch installed at the out side of the cooler that way if the cooler wasn't cooling good with the fan on low it would kick the fan into high to get a better cool on the oil. I have a few means of getting used auto parts for next to nothing i was going to get a heater core for a pick up truck as they normally have 90 degree lines coming off the cooling fins its self, and i can run phosphoric acid through it on a vacuum and rinse with baking soda water. to neutralize the acidity. Then bake the heater core in the oven on something like 200-250 for 8-12 hours to dry the inside of all water. the fan can be found with shroud on most 4cyl car rad shrouds. might luck up and get one for a geo prism they are 11" fans. the oil pump I haven't found yet because all the pumps i find are pulling too much pressure to run and not kill the battery on the bikes electrical setup.. thought of doing a mechanical pump on the same feed as the roots charger. but then i might have to consider serpentine belting the pulleys for maximum efficiency of space at the sprocket shroud. temperature switch could be a simple coolant temp switch with with a more sensitive relay. to kick the fan from low to high.

[Rookie Rider]

Wow you guys lost me with the last few posts. lol. As for the muffler i may just buy the HD bullet slipon. Mat black and i dont think it will look to bad, thanks for the help.

[Water Warrior 2]

Originally Posted by Rookie Rider

Wow you guys lost me with the last few posts. lol. As for the muffler i may just buy the HD bullet slipon. Mat black and i dont think it will look to bad, thanks for the help.

Probably a better idea than a simple straight pipe. You will still hear it and not break any nearby windows.

[Water Warrior 2]

A car fan would probably be ideal if the power requirement stays at 40 watts or less. An 11 or 12 inch fan would move more than enough air to cool a hot GZ. All in all you have an interesting project to consider. You won't have a Busa killer but you may surprise a lot of other small displacement riders. Any thoughts as to the power increase you may achieve if all goes well ? 20-30 % would be awesome for the GZ.

[Jvacustoms]

I do not know the power increase that is involved but I do know as how much nicer it would be to have the right to say that it is now a better performing bike.

[Water Warrior 2]

Doubtful I have the expertise to attempt your project. At most I would probably slap GZ 250 stickers on a S-40 Suzuki. Very similar in looks but a bigger 650 thumper.

[Jvacustoms]

Originally Posted by Water Warrior

Doubtful I have the expertise to attempt your project. At most I would probably slap GZ 250 stickers on a S-40 Suzuki. Very similar in looks but a bigger 650 thumper.

That is just cheating but all my research might have just been for not... There is an Sargent in the Army reserve unit that I am in that is willing to give me 2300.00 for a dropped 2003 gz the one i have been riding and i am not sure that I can pass that up. I can just sell the exhaust and carb jet on here and get into my larger gl1200 project with a nice funding flow.

I will say that I am glad that I got a chance to ride a GZ it was a great deal of fun and i might buy someone else's gz headache to fix up for myself.

[jonathan180iq]

Don't rush off.