Oversize tank on Kx-Dx conversion?

magilla · Post by **magilla** » 09:02 pm Aug 19 2007

Has any one with a KX-125/KDX220 conversion bike run an oversize gas tank?
Will it fit with the KDX motor in there? I usually do all-day rides on my KDX and really appreciate the extra mileage my big tank affords me. I'd hat to lose that if I build a hybrid. Thanks.

SteveWR450f · Post by **SteveWR450f** » 09:07 pm Aug 20 2007

Although I dont ride as far, I had the same question. How far can you ride with stock kx gas tank?

ebeck · Post by **ebeck** » 10:55 pm Aug 20 2007

It is a KDX motor so what ever you get on a KDX.

I know a gut who did put a KX IMS tank on a hybrid. Took a bit of work but it fit.

Post by **fuzzy** » 09:20 am Aug 21 2007

The tank fits the FRAME. Oversized tanks are generally tight even with the original motor. 'Work' I would imagine is necessary just like the rest of the build.

SteveWR450f · Post by **SteveWR450f** » 12:24 pm Aug 21 2007

Ebeck or Art,

How far can you ride on KX 2.1 gallon tank. I dont trust my ability to fit an oversize tank. Its seems just getting the kx tank to fit will take some work. Just got an 05 KX 125 off ebay. Not sure if I want to commit to the hybrid project. Thanks, SCP

FRYSPEED · Post by **FRYSPEED** » 02:51 am Aug 26 2007

I fitted a 13litre acerbis desert tank on my 98 kx125 with my 90kdx motor.Usaul problems fitting it so used a heat gun to mould tank around coolant thermostat housing same as you would with a standard kx tank. As for range I only race with it but can do 3hrs as hard asI can ride at the higher end of sportsman level and have at least 3litres left.

ebeck · Post by **ebeck** » 12:27 pm Sep 08 2007

I get the same mileage you'd get in a KDX with 2 gallons of gas. It depends on the riding but figure 45 miles or so.

Get a heat gun and just shape the tank to clear the cylinder head. It is super easy, no real skills needed.

Seriously, I plan on doing the Clarke KX tank.

magilla · Post by **magilla** » 11:52 pm Sep 19 2007

Thanks for the replies.
It looks like I've made a deal for a 2000 KX125 and should be picking it up this weekend.
Best part, it has a plate!
I plan on stripping it down completely, replacing all bearings and seals, and making the needed mods to fit my KDX220 motor. Likely will send out the carb and head to RB for the final mods to the motor while I'm doing the rest of the work.
I'll certainly try and get my hands on an oversize tank as well.
I don't know how speedy my progress will be, but I'm really looking forward to the project and will be sure to post about it here.

Cheers!

krazyinski · Post by **krazyinski** » 06:30 am Sep 20 2007

Got one for mine Ebay 114.00 bucks for a new IMS. also Got an applied top triple clamp for 39.00. any body need an 2003 KX plastic,fuel, tank wheels or forks let me know.

ebeck · Post by **ebeck** » 10:25 pm Sep 20 2007

Hmm, I am doing a sister bike. Hit me with a price for the forks, I am working on another unrelated (non bike) project right now but the forks are worth looking into.

krazyinski · Post by **krazyinski** » 07:09 am Sep 21 2007

$300.00 Includes forks,fork guards, triple clamp,brake with a new stainless line ,complete front wheel,spacers, axle NO axle nut. I can take high res pictures and email them if you like.

My suspension guy said there would be not enough noticeable difference to justify spending the money on re valving the 03 forks. For woods riding the 98's will work fine.

I got the IMS tank today and in comparison to the OEM it has more flexibility for fit and a little more room directly over the cylinder head.

man what I would do for a extra bike to ride so I can get started on this project.

ebeck · Post by **ebeck** » 04:14 pm Sep 21 2007

I agree with him. The 98 were plenty good especially for non MX riding. making the 03 like the 98 is kind of goofy.

email me if you have any questions. I an get you my phone number in case you need it and I can get you machine shop services to do it right.

Hmm, I bet I still have templates of the motor mounts....

art5 · Post by **art5** » 11:04 am Sep 24 2007

not sure about the other hybrid owners but the fuel range dropped considerably, Maybe 30 miles on a tank, Got clark working on some photos and deminsions for me, my motor is stock except for the shotry pro circuit silencer and the platinum 2 pipe, and an 94 kdx 200 25mm carb, I run stock gearng so I can only figure the chassis allows me to push the engine harder, Its fast by any standards in the 200 class,Got to get this big tank designed in

magilla · Post by **magilla** » 12:07 pm Sep 24 2007

art5,

Keep us informed if you come up with something working with Clark.
I can modify a tank if needed, but if they can produce one that fits, then all the better.

Cheers!

ebeck · Post by **ebeck** » 10:52 pm Sep 25 2007

I am certian art5's gas mileage drop is due to more aggressive riding that the KX fosters. What will drop mileage is more throttle twist.

art5 · Post by **art5** » 03:45 pm Oct 14 2007

http://img.photobucket.com/albums/v635/ ... ble005.jpg

art5 · Post by **art5** » 03:46 pm Oct 14 2007

http://img.photobucket.com/albums/v635/ ... ble003.jpg

art5 · Post by **art5** » 03:49 pm Oct 14 2007

http://img.photobucket.com/albums/v635/ ... ble002.jpg tight and alot of work with a heat gun but it will work

Jeb · Post by **Jeb** » 07:46 pm Oct 14 2007

Hey art5, what kickstarter did you use?

art5 · Post by **art5** » 08:39 pm Oct 14 2007

01 bottom half and 03 top half

KDXRIDER.NET

KDXRIDER.NET

Oversize tank on Kx-Dx conversion?

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