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Luejay Orboc posted a new thread.

Help GSXR250 GJ72A - Parts Measurements

Does anyone have a measurements for my bike's cylinder gaskets?

Forum: Suzuki 250cc In-line 4's

DanoHosko replied to the thread Discussion Exhaust Mods - Jetting.

Ok, so it sounds awesome, and the butt dyno maybe feels a little better too :D

DanoHosko replied to the thread Discussion Exhaust Mods - Jetting.

Currently everything is stock, stock exhaust, stock jets, stock air screw turns, so a good starting point to experiment @Frankster...

DanoHosko replied to the thread Discussion Exhaust Mods - Jetting.

Seems like its all black-magic to me haha! From a high level perspective then on the ZXR, more air flow through carbs could mean more...

DanoHosko rated gregt's post Thanks! in the thread Discussion Exhaust Mods - Jetting.

In my experience a pipe change or cam timing change will result in a change to the vacuum signal the carbs see. When talking CV's this...

GreyImport liked gregt's post in the thread Discussion Exhaust Mods - Jetting.

In my experience a pipe change or cam timing change will result in a change to the vacuum signal the carbs see. When talking CV's this...

gregt replied to the thread Discussion Exhaust Mods - Jetting.

In my experience a pipe change or cam timing change will result in a change to the vacuum signal the carbs see. When talking CV's this...

Murdo rated Frankster's post Agree in the thread Discussion Exhaust Mods - Jetting.

And, just to confirm what everyone before me has said... I run a ZXR250A engine with standard CV carbs. I run #110 mains on all four...

DanoHosko rated Murdo's post Thanks! in the thread Discussion Exhaust Mods - Jetting.

My CBR has a little short straight through "muffler" and has run quite happily for years with stock jetting. Try it first and see, as...

DanoHosko rated Frankster's post Thanks! in the thread Discussion Exhaust Mods - Jetting.

And, just to confirm what everyone before me has said... I run a ZXR250A engine with standard CV carbs. I run #110 mains on all four...

DanoHosko rated maelstrom's post Thanks! in the thread Discussion Exhaust Mods - Jetting.

It is most likely that your engine is already too rich. Owners put big jets in to make their bikes slower, foul plugs sooner and shorten...

DanoHosko rated Linkin's post Thanks! in the thread Discussion Exhaust Mods - Jetting.

As a general rule, when you fit an exhaust, air filter and such mods on an inline 4 with a 4 into 1 exhaust, you usually end up with a...

Frankster replied to the thread Discussion Exhaust Mods - Jetting.

And, just to confirm what everyone before me has said... I run a ZXR250A engine with standard CV carbs. I run #110 mains on all four...

Murdo liked maelstrom's post in the thread Discussion Exhaust Mods - Jetting.

It is most likely that your engine is already too rich. Owners put big jets in to make their bikes slower, foul plugs sooner and shorten...

Murdo rated Linkin's post Agree in the thread Discussion Exhaust Mods - Jetting.

As a general rule, when you fit an exhaust, air filter and such mods on an inline 4 with a 4 into 1 exhaust, you usually end up with a...