Rejet carbs & no aftermarket exhaust - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 9 (permalink) Old 07-11-2004, 09:02 AM Thread Starter
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Rejet carbs & no aftermarket exhaust

If I rejet my carbs and don't install an aftermarket exhaust, is there any harm?
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post #2 of 9 (permalink) Old 07-13-2004, 10:17 PM
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Quote:
Originally Posted by ShanMan14
If I rejet my carbs and don't install an aftermarket exhaust, is there any harm?
Possible cyclinder wall and ring damage, from excess fuel washing oil off cylinder walls and rings.
Carbs need to be jetted when aftermarket pipes are installed, to prevent lean running conditions.
Fuel injection and aftermarket pipes ROCK

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post #3 of 9 (permalink) Old 07-14-2004, 09:06 PM
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Some bike are too lean stock and benefit from jetting changes. What is important is to make sure it is tuned properly to your configuration. If you change the configuration, you will probably need to adjust your jetting.

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post #4 of 9 (permalink) Old 07-15-2004, 07:24 AM Thread Starter
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Sounds to me like I just need an aftermarket exhaust.

I got a tank of bad gasoline and it clogged the carbs. I rejetted in anticipating of a new pipe (after cleaning 'em out). I never got that pipe, at the time there weren't many offerings; that's not the case anymore.
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post #5 of 9 (permalink) Old 08-04-2004, 10:09 PM
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I know I'm a bit late on this but you need to watch where you get gas. Stay with the name brand gasolines. I would try to use nothing but Mobil, Marathon, Sunoco, and BP. Stay away from any of the speedways, krogers, admirals, shell, or any other generic branded gas.....That's the easy way to put it. I should know because I am in the industry and work with all the above oil companies. That's why they call me Gas Man...




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post #6 of 9 (permalink) Old 08-04-2004, 10:37 PM
 
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Quote:
Originally Posted by Gas Man
I know I'm a bit late on this but you need to watch where you get gas. Stay with the name brand gasolines. I would try to use nothing but Mobil, Marathon, Sunoco, and BP. Stay away from any of the speedways, krogers, admirals, shell, or any other generic branded gas.....That's the easy way to put it. I should know because I am in the industry and work with all the above oil companies. That's why they call me Gas Man...
Question for you..so whats the deal with places like Hess, Shell, etc..why is there such a difference in the quality of gas...always wanted to ask that question, but never had anybody to ask, till now..
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post #7 of 9 (permalink) Old 08-05-2004, 07:55 AM Thread Starter
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Quote:
Originally Posted by Gas Man
I know I'm a bit late on this but you need to watch where you get gas. Stay with the name brand gasolines. I would try to use nothing but Mobil, Marathon, Sunoco, and BP. Stay away from any of the speedways, krogers, admirals, shell, or any other generic branded gas.....That's the easy way to put it. I should know because I am in the industry and work with all the above oil companies. That's why they call me Gas Man...
Yes, I know this now, $250 later. The problem when in remote areas is that you don't always have the luxury of choosing. When possible, I go for Chevron, BP/Amoco etc. even if it's more expensive.

What's your take, Chris, on octane? I put in premium, is it necessary?
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post #8 of 9 (permalink) Old 08-08-2004, 12:41 AM
 
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Re: premium gas. Most bikes have 10:1 or more compression ratio (ZX12R has 12.2:1). Premium would be the smart thing to use. I put regular in my old Suzuki once, pinged severely up every hill. When I got home, I emptied the gas in my car. But if you are on the road, what are you going to do with five gallons of regular gas that pings? I've read that you shouldn't even use those pumps with one hose that dispenses three grades of gas because there can be regular gas in the hose.

Re: jetting. Are you thinking of changing main jets or buying a kit? Factory and Dynojet have great kits for each model of bike. Even have them for high altitude. And no, you do not have to change your exhaust when installing a kit.
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post #9 of 9 (permalink) Old 08-08-2004, 08:21 AM Thread Starter
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Quote:
Originally Posted by No Worries

Re: jetting. Are you thinking of changing main jets or buying a kit? Factory and Dynojet have great kits for each model of bike. Even have them for high altitude. And no, you do not have to change your exhaust when installing a kit.

I already installed a Dynojet kit.
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