Hot Rod 300ex - Yamaha Raptor Forum
 
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post #1 of 3 (permalink) Old 08-24-2015, 08:25 PM Thread Starter
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Hot Rod 300ex

So I bought a '97 big bore 300ex from my neighbor. He bought some 24.5" semi wheels for his Chevy dually and needed some cash. He had this motor built several years ago but the quad has been sitting for about 6 months. From what I've read its no bigger than 330cc, but it runs on race gas with the help of a 400ex carb. I have a few questions, hopefully someone can chime in with some answers.

-It still has the stock airbox lid. If I put on an EHS lid, I would have to rejet?

-Got some ASV levers for it, can I connect the 2 wires for the start in gear switch together?

-Its got a DG krome full exhaust thats seen its better days. How much bigger are the dg headers than stock? I would like to put a slip on on it and be able to reuse the header if possible.

'06 700R - PC5, K&N w/ ProDesign adapter, ProDesign PowerShifter, Pro-Tec Mo-Flo lid, MonsterPipe big bores, Moose front bumper, PRM grab bar, GYTR nerfs, Pro Armor swinger skid, DWT A5 wheels, Kenda Kutter 21" fronts & 20" rears, ASV F3 std. length levers, ODI clamp on grips, TMD case saver/guard, powerlip chain roller and skid plate, Raptor SE heel guards.

'07 Wolverine 450 - ITP SS106 wheels, 25" Mud Lites, GYTR slip on, Uni filter.
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post #2 of 3 (permalink) Old 08-24-2015, 08:26 PM Thread Starter
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'06 700R - PC5, K&N w/ ProDesign adapter, ProDesign PowerShifter, Pro-Tec Mo-Flo lid, MonsterPipe big bores, Moose front bumper, PRM grab bar, GYTR nerfs, Pro Armor swinger skid, DWT A5 wheels, Kenda Kutter 21" fronts & 20" rears, ASV F3 std. length levers, ODI clamp on grips, TMD case saver/guard, powerlip chain roller and skid plate, Raptor SE heel guards.

'07 Wolverine 450 - ITP SS106 wheels, 25" Mud Lites, GYTR slip on, Uni filter.
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post #3 of 3 (permalink) Old 11-14-2016, 08:18 AM
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You need to re-jet anytime you open up the air intake. a 330 motor should not even have a lid on it. Take it off and make sure you have a good foam filter. You will not need a EHS lid unless your in real muddy watery stuff.

2005 KFX700 good bit of mods
2001 Raptor 660R too many mods
1985 ATC250R
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