gen 3 125 airboot mod

yota · Post by **yota** » April 8th, 2009, 11:44 am

I did a seach but got nothing, not sure I'm using the search function correctly. What is the best method for making the gen 3 125 airbox mate to the late model 500 carb? thanks

4Z · Post by 4Z » April 11th, 2009, 9:25 am

Update.
Reading the old threads of the gen 3 125's it seems that two boots were used. 2000 250 and a stock gen 3 125.

Here is what my plan is:
I am going to order a new carb boot (since the rubber is soft and has not taken a set), clamp the carb in (with shock removed) apply some heat to both.
If that doesn't work, I will hack up the airbox to make the 00 250 boot fit properly and apply heat.

click below for a short vid of my airbox/boot issue.
http://rides.webshots.com/video/3033367 ... 3056QJWJBh

chachi243 · Post by **chachi243** » April 12th, 2009, 5:16 pm

that WILL work
2 stroke builds are so simple and clean.

4Z · Post by 4Z » April 12th, 2009, 8:10 pm

Update, pulled shock out, clamped carb in nice and tight. Ran the heat gun on both boots for a while, heating evenly and sneaking up on it. Let it sit overnight and she seems to be holding the "memory" when the carb was removed.
Now, just to deal with the seal to the box.... Ordered up another metal retaining flange for the inside of the box, minor modifications and we will have a "sandwich" seal.

dannygraves · Post by **dannygraves** » April 12th, 2009, 10:40 pm

chachi243 wrote:that WILL work
2 stroke builds are so simple and clean.

after doing both 2 stroke and 4 stroke builds, I have no desire to ever convert another 4 stroke chassis. a gen-3 250 chassis almost fits as is, the gen 4 chassis need EVERYTHING f-ed with.

4Z · Post by 4Z » April 26th, 2009, 12:50 pm

robertg · Post by **robertg** » April 26th, 2009, 1:26 pm

My stock 125 boot worked almost perfect. I had to stretch it about 1/8".

4Z · Post by 4Z » April 26th, 2009, 8:20 pm

I got the alignment issue solved. No big deal.

CR500 4 Ever · Post by **CR500 4 Ever** » April 26th, 2009, 8:40 pm

I'm sure the airbox and boot are stock 125 items on my S.H. Limited.

4Z · Post by 4Z » April 26th, 2009, 9:30 pm

CR500 4 Ever wrote:I'm sure the airbox and boot are stock 125 items on my S.H. Limited.

they are per AJ

high velocity · Post by **high velocity** » April 27th, 2009, 9:35 am

I put a rad valve on my ttm#5 and the carb fit a lot better.

yota · Post by **yota** » April 27th, 2009, 10:13 am

high velocity wrote:I put a rad valve on my ttm#5 and the carb fit a lot better.

sweet, my donor motor came with a Rad Valve. I think I'm going with this for the honda factory fuck up airbox
http://www.mxbonz.com/cnc_airbox_fix.htm

4Z · Post by 4Z » April 27th, 2009, 9:01 pm

yota wrote:
high velocity wrote:I put a rad valve on my ttm#5 and the carb fit a lot better.
sweet, my donor motor came with a Rad Valve. I think I'm going with this for the honda factory fuck up airbox
http://www.mxbonz.com/cnc_airbox_fix.htm

Wow! that is slick!!!! I picked one up....... Waaaaaay better than my ghetto mod.....Thanks for the link!

dannygraves · Post by **dannygraves** » April 28th, 2009, 8:39 am

yota wrote:
high velocity wrote:I put a rad valve on my ttm#5 and the carb fit a lot better.
sweet, my donor motor came with a Rad Valve. I think I'm going with this for the honda factory fuck up airbox
http://www.mxbonz.com/cnc_airbox_fix.htm

my gen-3 came with one of these installed in anodized red, I was wondering what the deal was.

rickyrcf · Post by **rickyrcf** » April 28th, 2009, 10:41 am

YOTA. did the rad valve give you a better alignment between the carb and the boot?

Thanks
Rick

yota · Post by **yota** » April 29th, 2009, 5:17 am

no idea, don't have my frame back yet.

BannedCR500Riders.com

gen 3 125 airboot mod

gen 3 125 airboot mod