GYTR head or PC porting and cams?

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2/28/2019 7:58 AM

Which is the better option? Motor is approaching rebuild time and exploring options. Bike is a 2015 YZ450 with Dr. D pipe and mapping.

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2/28/2019 11:24 AM

The GYTR head comes with the cams.
I have a 2013 YZ450 with GYTR head/cams, GYTR piston, and a FMF exhaust. Even with the mapping dialed way back, it's stupid fast, particularly on the bottom and mid range. Much stronger than the newer bikes I've ridden- 18 KTM350, 18.5 KTM450FE, 19 KX450, 19 YZ450, 15 FC450. Less bottom end than my 89 CR500 with pipe, 39.5mm carb, and other goodies though. Can't tell you how PC's stuff compares, but the GYTR package works very well.

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2/28/2019 11:29 AM

Matt Fisher wrote:

The GYTR head comes with the cams.
I have a 2013 YZ450 with GYTR head/cams, GYTR piston, and a FMF exhaust. Even with the mapping dialed way back, it's stupid fast, particularly on the bottom and mid range. Much stronger than the newer bikes I've ridden- 18 KTM350, 18.5 KTM450FE, 19 KX450, 19 YZ450, 15 FC450. Less bottom end than my 89 CR500 with pipe, 39.5mm carb, and other goodies though. Can't tell you how PC's stuff compares, but the GYTR package works very well.

Thanks for the info. I'm leaning towards the GYTR, but PC's results can't be ignored. All things considered cost wise it would probably be a push between the two once valves and cams are added to the PC stuff, piston would push it over the top. Are you running race gas in yours? catch me at the track sometime so I can check out your bike. I'm at D!1 pretty often.

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2/28/2019 6:36 PM

I'm not running race fuel. Tried 100LL and there seemed to be no difference, so back to 91 swill it is. I haven't even ridden it with the injection and timing turned up.

I'm out at DT1 just about every Sunday, #514V. Usually pit with Jeff Grodsky of Over The Top Motorsports. Swing by and you're welcome to take it for a spin. This weekend there's a Loretta qualifier so I'm hoping Porterville will be open. Shoot me a PM and I'll get you my phone number.

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