Planet Minis

Blackwoodz · 03-26-2009, 07:43 PM

DIRTMAX 4 VALVE HEAD & BIG BORE KIT YX150 YX160 - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 01-Apr-09 21:44:25 AEDST)
I talked to a guy down under and says he will have these heads in 4 days.
So when will the US have them? Any vendors got them on order?

Matified · 03-26-2009, 07:53 PM

Quote:

Originally Posted by Blackwoodz

DIRTMAX 4 VALVE HEAD & BIG BORE KIT YX150 YX160 - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 01-Apr-09 21:44:25 AEDST)
I talked to a guy down under and says he will have these heads in 4 days.
So when will the US have them? Any vendors got them on order?

I can see they are not very good with math, the 63mm will net 165 on a 150 and 177 on a 160,,,

chasetheface123 · 03-26-2009, 07:55 PM

700 bucks! **** getting that!

Blackwoodz · 03-26-2009, 08:00 PM

yeah I noticed the marketing math being used..I was just curious about the head.
Matt did you guys ever test it when you were over there? wondering how it compared to the V2?

mattmoto441 · 03-26-2009, 08:15 PM

its over rated and need big cc's to make full use it. v2 is cheap and easy power

mattmoto441 · 03-26-2009, 08:18 PM

also if that was yx'es stuff would help. that is the kitaco stuff they are knocking off in those pics. that is the kitaco stuff in those pics NOT THE Yx

Staggs Racing · 03-26-2009, 08:22 PM

not worth it right now

357 Racing · 03-26-2009, 11:11 PM

I like how they use a picture of a Kitaco kit. LOL

PorkChop247 · 03-26-2009, 11:17 PM

well at least someones making them

357 Racing · 03-26-2009, 11:20 PM

Quote:

Originally Posted by Red_Baron526

well at least someones making them

Yea but for that much? I guess it's a start to get kitaco to lower their prices...

magiksc · 03-26-2009, 11:25 PM

Nah!

tormentandglory · 03-27-2009, 12:22 AM

Quote:

Originally Posted by chasetheface123

700 bucks! **** getting that!

Thats AU$700, it'll be a hell of a lot cheaper for you guys in the USA...

MedinaMiniSX · 03-27-2009, 01:49 AM

Quote:

Originally Posted by chasetheface123

700 bucks! **** getting that!

Wow? That is really big bucks from what I am hearing actual cost is?

What if some other 'deep discounting' PM vendor who regularly buys YX stuff brought them in and sold them 4 cheap? Sound familiar?

What if the V2 and the 4-Valve were the same price... complete Kit 4 complete kit? Would that be a better value? What if the new 4-Valve was even cheaper than the V2 ????

Hmmm? What vendor would ever do such a thing ????

bob

wogtaz ryder · 03-27-2009, 02:29 AM

Us $485

benjaidafufukil · 03-27-2009, 02:49 AM

Quote:

Originally Posted by MedinaMiniSX

Wow? That is really big bucks from what I am hearing actual cost is?

What if some other 'deep discounting' PM vendor who regularly buys YX stuff brought them in and sold them 4 cheap? Sound familiar?

What if the V2 and the 4-Valve were the same price... complete Kit 4 complete kit? Would that be a better value? What if the new 4-Valve was even cheaper than the V2 ????

Hmmm? What vendor would ever do such a thing ????

bob

Hummm I wonder

Blackwoodz · 03-27-2009, 04:35 AM

Quote:

Originally Posted by mattmoto441

its over rated and need big cc's to make full use it. v2 is cheap and easy power

if overated...then why is your dad working on a double overhead setup right now? and many members have ran a double over head setup on 125 and less.

Kurlon · 03-27-2009, 05:41 AM

Quote:

Originally Posted by Blackwoodz

if overated...then why is your dad working on a double overhead setup right now? and many members have ran a double over head setup on 125 and less.

Maybe the DOHC setup can actually flow at lower displacements and make power. : ) Depending on how that SOHC is setup, it may have terrible volumetric efficiency at 'normal' YX160 displacements that result in a craptacular power curve, boggy on bottom, sudden rip on top then flat on it's face. A V2 may beat it for most builds in that case. The DOHC may respond better at lower displacements allowing for a wider, more usable power band. On the flip side, the DOHC may not be the absolute king of the hill for peak HP on anything goes builds as a result.

Blackwoodz · 03-27-2009, 05:46 AM

Thanks. I am not an engine expert so really do not the flow numbers..That is why I was asking.

Kurlon · 03-27-2009, 05:50 AM

Yeah, I'm thinking it may be kinda like putting a Lifan BVH on a 50... you're going to have to work pretty hard to make that setup function. I haven't gotten my hands on one of these SOHC heads yet, so I dunno what the valve sizes are, how the ports look, etc, so I'm just making some wild ass guesses based on the snippits I've seen posted in this thread.

I'd love to play with one, as I think there is potential there, but I also don't want to invest money in a YX150/160 at the moment given the growing pains they're going through. I've got to settle on a motor repair or rebuild here shortly too... ESMRA is a possibility for me this year, plus I wanna terrorize NHMS for a couple track days... : )

Blackwoodz · 03-27-2009, 06:04 AM

The yx engines can be made to be a beast. You just need to fix a few of the manufactured errors. Many guy have been running the snot out of the older yx150s for years without issues. The answers to them are out there you just have to ask the right people and be willing to do the leg work for the right components. Not like a honda bolt on and rippem up. I am hoping to have mine bullet proof in a couple weeks.

03-26-2009, 07:43 PM	#1 (permalink)
Blackwoodz 3rd Gear Member Join Date: Aug 2008 Location: SC Michigan Posts: 4,094	YX 4v heads ? DIRTMAX 4 VALVE HEAD & BIG BORE KIT YX150 YX160 - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 01-Apr-09 21:44:25 AEDST) I talked to a guy down under and says he will have these heads in 4 days. So when will the US have them? Any vendors got them on order?

03-26-2009, 07:55 PM	#3 (permalink)
chasetheface123 Chuck Norris for president! Join Date: Nov 2007 Location: Boyne City Michigan Posts: 5,136 My Mood:	Re: YX 4v heads ? 700 bucks! **** getting that!

03-26-2009, 08:00 PM	#4 (permalink)
Blackwoodz 3rd Gear Member Join Date: Aug 2008 Location: SC Michigan Posts: 4,094	Re: YX 4v heads ? yeah I noticed the marketing math being used..I was just curious about the head. Matt did you guys ever test it when you were over there? wondering how it compared to the V2?

03-26-2009, 08:15 PM	#5 (permalink)
mattmoto441 3rd Gear Member Join Date: Sep 2004 Location: unknown Posts: 2,114 My Mood:	Re: YX 4v heads ? its over rated and need big cc's to make full use it. v2 is cheap and easy power Last edited by mattmoto441; 03-26-2009 at 08:18 PM.

03-26-2009, 08:18 PM	#6 (permalink)
mattmoto441 3rd Gear Member Join Date: Sep 2004 Location: unknown Posts: 2,114 My Mood:	Re: YX 4v heads ? also if that was yx'es stuff would help. that is the kitaco stuff they are knocking off in those pics. that is the kitaco stuff in those pics NOT THE Yx Last edited by mattmoto441; 03-26-2009 at 08:22 PM.

03-26-2009, 08:22 PM	#7 (permalink)
Staggs Racing Advertiser Join Date: Jul 2005 Location: victorville,ca Posts: 7,096 My Mood:	Re: YX 4v heads ? not worth it right now __________________ Website WWW.STAGGS-RACING.COM Shop OnlineWWW.SGR-USA.COM CONTACT@SGR-USA.COM WWW.MYSPACE.COM/SGRUSA

03-26-2009, 11:11 PM	#8 (permalink)
357 Racing 3rd Gear Member Join Date: Dec 2006 Location: Austin, Texas Posts: 4,079	Re: YX 4v heads ? I like how they use a picture of a Kitaco kit. LOL

03-26-2009, 11:17 PM	#9 (permalink)
PorkChop247 3rd Gear Member Join Date: Jun 2008 Location: So Cal, Orange county Posts: 1,591 My Mood:	Re: YX 4v heads ? well at least someones making them

03-26-2009, 11:25 PM	#11 (permalink)
magiksc 3rd Gear Member Join Date: Oct 2006 Location: Somewhere between Heaven and Hell... Hemet/Provo Posts: 3,684 My Mood:	Re: YX 4v heads ? Nah!

03-27-2009, 02:29 AM	#14 (permalink)
wogtaz ryder 2nd Gear Member Join Date: Jun 2008 Location: The Land Downunder Posts: 557 My Mood:	Re: YX 4v heads ? Us $485

03-27-2009, 05:46 AM	#18 (permalink)
Blackwoodz 3rd Gear Member Join Date: Aug 2008 Location: SC Michigan Posts: 4,094	Re: YX 4v heads ? Thanks. I am not an engine expert so really do not the flow numbers..That is why I was asking.

03-27-2009, 05:50 AM	#19 (permalink)
Kurlon Super Moderator Join Date: Feb 2005 Location: Windham, ME Posts: 8,403	Re: YX 4v heads ? Yeah, I'm thinking it may be kinda like putting a Lifan BVH on a 50... you're going to have to work pretty hard to make that setup function. I haven't gotten my hands on one of these SOHC heads yet, so I dunno what the valve sizes are, how the ports look, etc, so I'm just making some wild ass guesses based on the snippits I've seen posted in this thread. I'd love to play with one, as I think there is potential there, but I also don't want to invest money in a YX150/160 at the moment given the growing pains they're going through. I've got to settle on a motor repair or rebuild here shortly too... ESMRA is a possibility for me this year, plus I wanna terrorize NHMS for a couple track days... : )

03-27-2009, 06:04 AM	#20 (permalink)
Blackwoodz 3rd Gear Member Join Date: Aug 2008 Location: SC Michigan Posts: 4,094	Re: YX 4v heads ? The yx engines can be made to be a beast. You just need to fix a few of the manufactured errors. Many guy have been running the snot out of the older yx150s for years without issues. The answers to them are out there you just have to ask the right people and be willing to do the leg work for the right components. Not like a honda bolt on and rippem up. I am hoping to have mine bullet proof in a couple weeks.

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