220 Head Mod... Already Done by "Someone Else"

Got questions? We got answers....
Post Reply
GATOROC
Supporting Member II
Supporting Member II
Posts: 34
Joined: 12:25 am Mar 06 2019
Country: United States
Location: Colorado Springs, CO

220 Head Mod... Already Done by "Someone Else"

Post by GATOROC » 01:02 pm May 09 2019

Since the previous owner didn't really know anything that had been done to my bike, I "assumed" that the head was stock, so I sent it off to RB Designs for some work. Ron responded back to me saying, "We received your head for modification - however, upon inspection your head has already been modified by someone else and cannot do anything with it." Damn it! :? soooo... it's been modified already - is there any way to tell if it's been modified by Fredette, besides calling him? It's not a big deal, but I'm just curious who might have done it, and if the mod that's been done to mine might be somewhat as good as a RB Designs mod?

Here are a few pics of it. I'm not sure what the difference is between this one and a stock head.

Image

Image

Image

Image

Image
2000 KDX 220

User avatar
Slick_Nick
Supporting Member
Posts: 929
Joined: 10:06 pm Oct 22 2009
Country: Canada
Location: Calgary, Alberta
Contact:

Re: 220 Head Mod... Already Done by "Someone Else"

Post by Slick_Nick » 04:46 pm May 09 2019

That looks a lot like my RB head.
'00 KDX 220R

GATOROC
Supporting Member II
Supporting Member II
Posts: 34
Joined: 12:25 am Mar 06 2019
Country: United States
Location: Colorado Springs, CO

Re: 220 Head Mod... Already Done by "Someone Else"

Post by GATOROC » 05:46 pm May 09 2019

Slick_Nick wrote:
04:46 pm May 09 2019
That looks a lot like my RB head.
Hmmm... well, hopefully it was RB or Fredette. It would seem that Ron would know if he did the work on it or not, but he didn't say anything.
2000 KDX 220

Molly's 70
Platinum Member
Platinum Member
Posts: 178
Joined: 04:29 pm Jun 18 2017
Country: United States of America
Location: Wichita, Kansas USA

Re: 220 Head Mod... Already Done by "Someone Else"

Post by Molly's 70 » 06:06 pm May 09 2019

R/B did my head modification & it definitely did "Not" look like that.
If you lend someone $20, and never see that person again, it was probably worth it.

Vossman
Supporting Member II
Supporting Member II
Posts: 206
Joined: 06:23 pm Jul 24 2017
Country: USA

Re: 220 Head Mod... Already Done by "Someone Else"

Post by Vossman » 08:46 pm May 09 2019

GATOROC wrote:
05:46 pm May 09 2019
Slick_Nick wrote:
04:46 pm May 09 2019
That looks a lot like my RB head.
Hmmm... well, hopefully it was RB or Fredette. It would seem that Ron would know if he did the work on it or not, but he didn't say anything.
I thought the same thing.

User avatar
SS109
Member
Posts: 3680
Joined: 05:11 am Aug 23 2009
Country: US
Location: Tucson, AZ, USA
Contact:

Re: 220 Head Mod... Already Done by "Someone Else"

Post by SS109 » 05:00 am May 10 2019

There are a lot of companies (RB, Millenium, etc.) that modify the squish band on heads. Unless they stamped it there is no way to tell who did it. Measure the clearance and you'll know whether it's good or not.
AZ State Parks OHV Ambassador - Trail Riders of Southern AZ
'11 GasGas EC250 Race
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue

Molly's 70
Platinum Member
Platinum Member
Posts: 178
Joined: 04:29 pm Jun 18 2017
Country: United States of America
Location: Wichita, Kansas USA

Re: 220 Head Mod... Already Done by "Someone Else"

Post by Molly's 70 » 01:21 pm May 10 2019

If you go to RB's web site you can see a picture of his head mod. The squish band area is machined. That is what my head looks like. You can also do his test with the correct diameter of solder just to see what you have.
If you lend someone $20, and never see that person again, it was probably worth it.

GATOROC
Supporting Member II
Supporting Member II
Posts: 34
Joined: 12:25 am Mar 06 2019
Country: United States
Location: Colorado Springs, CO

Re: 220 Head Mod... Already Done by "Someone Else"

Post by GATOROC » 01:31 pm May 10 2019

There wasn't any stamp on it that I noticed. Too late to measure the clearance since I assembled everything last night. I bought this bike back in March and haven't really had a chance to ride it, so I was itching to get this thing back together. :wink: I was amazed that it kicked over the second kick! I was able to do the break-in procedure last night and will probably ride it a little more today. It's running pretty good but still need to go through the "jetting guide".

I'm still thinking about finding a stock head if I can guarantee that it's actually "stock", and sending it to RB for the mod. For right now I'm just going to enjoy finally riding my bike.
2000 KDX 220

Molly's 70
Platinum Member
Platinum Member
Posts: 178
Joined: 04:29 pm Jun 18 2017
Country: United States of America
Location: Wichita, Kansas USA

Re: 220 Head Mod... Already Done by "Someone Else"

Post by Molly's 70 » 03:58 pm May 10 2019

Looks like you can get a brand new head for only $255.00. That one will definitely be stock.
If you lend someone $20, and never see that person again, it was probably worth it.

User avatar
KDXGarage
KDXRider.net
KDXRider.net
Posts: 9549
Joined: 06:45 am Nov 01 2004
Country: United States of America
Location: AL, USA
Contact:

Re: 220 Head Mod... Already Done by "Someone Else"

Post by KDXGarage » 04:06 pm May 10 2019

www.partzilla.com

HEAD-CYLINDER
11001-1410
by Kawasaki

$254.73 27% OFF

$184.94

It is the same part number from 1997 - 2005.
kdxrider.net forum member doakley participating in National Enduro series:
(current class standing, 5th!)
viewtopic.php?f=136&t=23217&sid=e6a86d8 ... 9&start=40

Thank you for participating on kdxrider.net. :bravo:

User avatar
SS109
Member
Posts: 3680
Joined: 05:11 am Aug 23 2009
Country: US
Location: Tucson, AZ, USA
Contact:

Re: 220 Head Mod... Already Done by "Someone Else"

Post by SS109 » 04:16 am May 11 2019

It doesn't matter who did the work as long as they were competent and set the squish to what your bike needs. The solder test is the only way to know for sure.
AZ State Parks OHV Ambassador - Trail Riders of Southern AZ
'11 GasGas EC250 Race
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue

pumpguy
Gold Member
Gold Member
Posts: 665
Joined: 10:00 am May 29 2012
Country:
Location: Spring Grove, Illinois

Re: 220 Head Mod... Already Done by "Someone Else"

Post by pumpguy » 03:22 pm May 12 2019

Squish band clearance and chamber volume with piston @ TDC are, IMO, the 2 numbers you really need to know. With a bit of care, you should be able to get get this information without having to take the head off.

User avatar
doakley
Gold Member
Gold Member
Posts: 518
Joined: 02:58 pm Mar 10 2016
Country:

Re: 220 Head Mod... Already Done by "Someone Else"

Post by doakley » 08:37 am May 13 2019

Well, here’s a question. Have you run the bike yet? If so, how does it do? May not need to fix it if it ain’t broke.

GATOROC
Supporting Member II
Supporting Member II
Posts: 34
Joined: 12:25 am Mar 06 2019
Country: United States
Location: Colorado Springs, CO

Re: 220 Head Mod... Already Done by "Someone Else"

Post by GATOROC » 12:09 pm May 15 2019

I’ve only had one small opportunity to ride it at the house, but from that short ride I can tell that it needs to be jetted properly. After I get back from my trip I can start working on it. It pulls pretty hard on the top end but is a bit sluggish from low to mid range. I have no idea whether the current head on there will make a difference or not from a “known” RB head mod, but oh well. I can tell that this bike is going to be a blast to ride - just a “tad” different from my crf450r. :wink:
2000 KDX 220

Post Reply