kashworth

I have a 1999 yamaha xl 1200 ltd and found that there is a hole I. The side of the engine. My question is, can I put a non powervalve engine in place of one with powervalves? There is qhite a difference in cost so I would like to weigh the options.

YamaDoo

Are you sure your 99 has the power valve motor? I thought they came out in the 2000 GP1200r. Anyways the non PV has completely different exhaust routing than the PV 1200 motor. Not worth the hassle to save a few hundred bucks in my opinion. Plus you'll lose 20 HP.

kashworth

No I'm not for sure, haven't checked the numbers on it yet,i just saw a site selling engines that said the powervalve was for 99

kashworth

Pic of the hole in the crankcase

Is this a powervalve engine? I'm new to pwc's, I really only know about aircraft so any help is much appreciated.

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YamaDoo

Yes that is a Powervalve engine. Try pwcengine.com, they are cheaper and better than SBT.

Ernest T

I'm pretty sure that 1998 was the first year Yamaha produced a powervalve engine and it was on the GP800. The first year they added them to the 3 cylinder engines was 1999 with your XL1200.

Agree with YamaDoo, may be more hassle than its worth to try to go with a non-PV engine.

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2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100

kashworth

I'm guessing that right above the exhaust ports are the actual power valves?

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1999 Yamaha XL1200 LTD
1997 Sea Doo GSi