Need some help from my G8 friends here

bigred_262002

I just picked up a G8 that didn't run real well. I found the rings were shot and the boot for the carb was busted. While I have it out I was going to do a valve job and all new seals and gaskets. While the cylinder was out and the block was empty I thought what hell I would go .50 MM over on it. What I want to know is since I have it apart and going this far what other mods should I look into doing? This is being built for off light off road use like trail riding and so on so any extra power I can pull out of it would be great. Please any input would be great.

BGW

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smallblock450sl

My only concern going 50 over, is that's it! I'd rather go 25 over if needed, then you have a second chance later. The Yamaha engines are well built for a golf car, for light off road, you should be happy. There realy isn't alot of "HP" gained from modifiying the stock engine/carb/muffler. If you want some added torque, the secondary clutch upgrades are the way to go. Good luck on your build, show pix's and if you must....join th g8 club....they've taken G8's to a new level and have more fun then most

Mike Mac

Hay! Smile when you say that Mister!! And want to add, Plowmans has a cam for a G16 now,so... maybe there is going to be one for a 285 cc!? Maybe-maybe!!

smallblock450sl

I did At what cost for the cam and what gain? Big Block or sit in the back seat Did you do the brake job, or fussing with window's

bigred_262002

Yeah I was thinking that also but then again over time if something happens I will probably big block it but I'm not sinking that kind of money in it now. It has the power spring kit in the rear already so now it’s all up to the power plant. Just wanting to get a little power for the hills.
Sorry okokok here :) I don't see the smiley icon. I’m just trying to keep everyone happy

smallblock450sl

Make shure the air box is sealed correctly ( rubber straps and airbox lid and seal), that will cost you power in these car's. As for keeping everyone happy, ask questions,reply to questions with honest awnsers, and you'l be fine. Have fun with your car

bigred_262002

What benefits is there for going with a cold air type kit. As for my G1 I have a K&N cone type filter but that’s also 2 cycle ant 4 stroke. I see where guys put a cold air system an rejeted the carb ( rejeted? is that a word lol ) Is it worth the time and money?

Mike Mac

Red, I would encourage you to read the whole Yamaha site! Tons to learn, and do all maintenance talked about here. Maintenance is the key to a good running car.

Enter the "G8 Club" at your own risk, (don't know if you'll be helped there, but you will be talked about ether way )! But there is alot of info. there!

bigred_262002

Yeah I been doing some research on here but haven't seen a whole lot on G8s. That why I thought I would ask.

Mike Mac

G2/8/9's share alot of the same running gear. G8 frame is close to the same as G16, so between the 2 you have to jump back and forth. G8's are rare.