122 replies to this topic

[techgreg TT Member]

Cool!  Let us know what u think of the kit and how the bike runs afterward please.

[gavin198 TT Bronze Member]

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attached the plastics now just waiting on honda to send me the right water pipe then she can go on the road

[shrubitup brap]

Sexy. Might consider an all black seat though. Not a must have.

[gavin198 TT Bronze Member]

shrubitup, on 17 April 2012 - 07:07 AM, said:

Sexy. Might consider an all black seat though. Not a must have.

already on order just waiting on it to turn up

[husky34 TT Titanium Member]

So far this week on my 91' CR500.....

- New Pirelli tires fron and back
- New wheel bushings and seals front and back
- New rear Vortex 51 tooth sprocket
- New 1 1/8" inch bar clamps
- New 1 1/8" inch TAG handlebars
- New fork seals and bushings
- New Pro Circuit pipe and silencer
- New chain guide
- New brake pads front and back

and much more to do...!

[KDUB FAN TT Newbie]

My eric gorr 144 kit just came in the mail. I can't wait to install it. I will take some side by side pictures of all the parts for comparison. It will be broken in Friday, and track tested on Saturday.

[SMarquez TT Platinum Member]

SandMantis, on 15 April 2012 - 05:21 PM, said:

Got my baby a new front tire.  Bridgestone M203.  Looks really sweet on there.  She's DUNE READY!

God!!!! not the dunes!!! You have a good chance of sucking sand. Did you upgrade or positively reseal the airbox boot/seal? They are ver suspect there. MXbonz.com had an upgrade kit, I'm using Honda parts from 2000 CR250 to get a proper seal on my 05.

[shrubitup brap]

MXBonz and Ron Paul FTW.

[KDUB FAN TT Newbie]

Well, I just got through installing Eric gorr's 144 kit along with fresh linkage bearings, new dunlop 756, and new revalve and rebuild from factory conection. The motor is broken in with a half hour on it. And I can see the difference allready. Even though I went with mid to top porting, there is a sizable increase in bottom end. This 2006 cr 125 (144) is ready for the track.

[shrubitup brap]

KDUB FAN, on 20 April 2012 - 11:08 AM, said:

Well, I just got through installing Eric gorr's 144 kit along with fresh linkage bearings, new dunlop 756, and new revalve and rebuild from factory conection. The motor is broken in with a half hour on it. And I can see the difference allready. Even though I went with mid to top porting, there is a sizable increase in bottom end. This 2006 cr 125 (144) is ready for the track.

Good to hear it's working well for you!

[techgreg TT Member]

I started the sanding and polishing work on my frame...

Attached Thumbnails

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[techgreg TT Member]

gavin198, on 16 April 2012 - 10:55 PM, said:

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attached the plastics now just waiting on honda to send me the right water pipe then she can go on the road

You plan on paddling that thing with an oar?  LOL!  (no chain).  Hehehe!

Very nice looking bike man.

Edited by techgreg, 20 April 2012 - 09:36 PM.

[gavin198 TT Bronze Member]

techgreg, on 20 April 2012 - 09:36 PM, said:

You plan on paddling that thing with an oar?  LOL!  (no chain).  Hehehe!

Very nice looking bike man.

i know no chain was think pedal power haha not really
was in process of rebuilding it on that pic i still needed to fit new gear lever, exhaust(expansion chamber) grips,levers,water pump to cylinder pipe and new seat cover has turned up but not had time to do any yet made a mounting kit for a friend so he cod attach same plastice easier

[KDUB FAN TT Newbie]

Well, I took the cr 144 to the track and gave it hell. The engine does not rev higher, but it does rev quicker. You definately have to shift quicker. There is a noticeable increase from bottom to top, however you don't have to work as hard to keep it in the sweet spot.No jetting changes were required. l will have to go 1 tooth bigger on the front sprocket. This is how the bike is currently set up.
Jetting....
mj   450
pj    35
clip position   2nd from top ( stock needle )
air screw   1 3/4 turns out
Oil used is Bel ray HR1 at 36 to 1
gearing   13 / 52  ( soon to be 14 / 52  )
All in all,   it was a good invesment, and look forward to racing vet C class with it this year.

[hardhitwarrior TT Gold Member]

Iv repacked myt silencer, sealed the pipe joint, changed new air filter, lube the chain, scrape off the mud that was accumulating on the swingarm.
I also oiled the unpainted pipe with motor oil to prevent rust. Changed the motoroil. Filled the tank with 30:1 98 octane fuel.

[BlackCR25098 TT Titanium Member]

Gavin as you read this you've probably already seen my message and know I've decided to do the CRF plastic update/conversion.

At least you had a GEN3 CR to start with, which has decent graphics/aftermarket goodies availability. Try owning a GEN1 97-99!! HA! Not only is there nothing but the typical cliche lame graphics, but the gen1 plastics just look god AWFUL...In a way though, the 97-99 plastics (with the huge long side panel plastic that covers the entire side and connects to the radiator shroud plastic) Seems to have come full circle again with the 09-12 CRF plastic kit. The one I loooove. What I mean is both the oldddd and new CRF plastic kits share the same basic design. I can't overstate the use of the word basic lol but the new CRF plastics, and the ones leading up to it keep getting slimmer and edgier with time. Sort of like how the body on american trucks has gotten bigger and bigger. Thanks Dodge.

Anyway, I'm stoked because I've done endless searching of the web for this 09-12 CRF conversion. It's hard enough to find done on a 02-08 CRF, much less a CR250 so close to mine in age!!!! This is great.

So here's what's up. Bought this 2004 CRF250 gas tank and oem shrouds from a friend for dirt cheap, just for test fitting. To my amazement, the fit was actually pretty amazing. In this picture the tank is ON and mounted, but the radiator shrouds are only mounted on top 2 bolts to the tank. The lower 2 are just hanging.


The hardest part of this was getting the gas tank to fit my frame correctly. It took cutting out the entire bottom-front of the CRF tank and custom building/molding the shape I needed. It needed a deep 90 degree ridge several inches from the front, because the gen1 frames where the frame comes together near the tank bolt mount, has a thick metal brace crossmember that connects the 2 frame spars and houses the CDI and other electrics. The 00-01 and 02-07 did not have this. Here is an idea of how insanely off the CRF tank is.


Cutting and refitting the bottom front of CRF tank seems like a nightmare, but really was actually pretty easy. I first tried heating and molding it with heat gun, but put a hole in it within my first attempt. That technique's only good for if you need to make a slight dent to clear the spark plug or something. Not for completely remolding lol So the new route is the RIGHT WAY.

I would just use my OEM 98 tank, but I HATE it because it just looks terrible in that off white yellow, and looks terrible on conversions because the sleeker shrouds always show gaps where the tank shows alot and shows that terrible yellowing. Black tank hides it perfectly, and there was NO way to paint, coat, or decal my tank to make it black other than dying it black, but dying it is more of a messy PITA than modding the CRF tank. Another big reason for using a newer black tank obviously is so the shrouds/seat will fit perfectly, and the black hides and gap imperfections. Night/day difference!!

SO, this is where I changed it all up. I've decided if I'm going to go to all this trouble doing a conversion, why not do the plastic kit that I REALLY want/love? I got to looking at graphics kits for the 2004 CRF and was surprised that the selection wasn't as great as I thought. The 2012 CRF plastics had ALL the graphics kits I loved. If I can do the 04, then I can do the 2012!!!

Gavin, what's crazy is I know your bike very well and you've even told me the conversion you did a while back, but at the time I had no clue... My searches finally led to you after a while though, and I'm stoked to see a CR250 with these!!!
As you probably read in my message man I would kill to have you just list to me every single thing you did? I am keeping my 98 subframe and 98 air box. Don't want to hack it up at all.

What I need to know now is IF the 2012 CRF shrouds tank bolt holes will line up on the 04 CRF tank? I'll be able to salvage this 2004 CRF gas tank??? It's not a big deal if I can't, but the distance of the 2 bolt holes on the gas tank of the 2012 tank and the 04 look damn close!! Does anyone know if they'll fit OR does anyone know of a CRF around 2004ish that converted to the 09-12 CRF plastics using the stock tank? Trying to find out if it will work or not...If not I'll just pick up a 2012 tank, no biggie! I don't want to have to drill holes in the new plastic or make brackets on the tank...Everywhere else I can weld in new mounting tabs or make really clean mounting brackets!

You'll be glad to know I'll be using that 3D carbon fiber wrap to wrap my entire subframe, air box, and on any brackets, and some other key spots. This thing is going to be incredible. Going to take my time with it. Sorry for writing all this gavin and everyone, but I've got so many questions to find the best overall fit, and there is damn near no info out there! Any help is always greatly appreciated.

Let's keep this thread alive and always be modding our Honda 2 strokes

[KcDavis Get Help Now]

BlackCR25098, on 21 July 2012 - 02:52 AM, said:

Gavin as you read this you've probably already seen my message and know I've decided to do the CRF plastic update/conversion.

At least you had a GEN3 CR to start with, which has decent graphics/aftermarket goodies availability. Try owning a GEN1 97-99!! HA!

Actually, he started with a Gen 2 CR.

[gavin198 TT Bronze Member]

Now I have read that after replying to your message going to be hard work to mould a tank I used my stock 2001 tank have to drill holes 2012 crf tank would be slimmer and they all mount different use stock tank and carbon wrapp the tank no way out of drilling the hole in the plastics just do it (ps get it right 1st go) check 12 times drill the once  not check once drill 12 air box needs to be hacked only a lilttle bit And you should have a inbox

[BlackCR25098 TT Titanium Member]

KcDavis, on 21 July 2012 - 06:47 AM, said:

Actually, he started with a Gen 2 CR.

Man I just read his build thread right before I wrote that message earlier...and I'm 99% sure on a 02-07 but if it is a gen2 that's even closer to my year bike!! Doesn't really matter tho I guess. I know they will fit and look good. The research and quality is in all the details..Can't wait. Gavin's bike just proved to me that not only it can be done but that the plastics actually fit the frame and entire look of the bike flawlessly. I'm going to pull out all the stops. I just can't wait to get started I wish I had the tank/plastics now!

It LOOKS like the 2012 CRF shrouds will not fit on my 04 CRF tank. It's weird, the tanks bolt locations look IDENTICAL. If they are off, it has to be by **** hair lol but the angle on the tank is of equal concern.

The problem is these 09-12 CRF tanks are expensive as hell!!! LOL If I can locate one for a decent price, giving me the green light on the new plastics then I'm going to just relocate all the OEM mount tabs so it truly does have a factory fit. I'll never want to switch plastics again, and my bike isn't going anywhere...

[BlackCR25098 TT Titanium Member]

gavin198, on 21 July 2012 - 09:47 AM, said:

Now I have read that after replying to your message going to be hard work to mould a tank I used my stock 2001 tank have to drill holes 2012 crf tank would be slimmer and they all mount different use stock tank and carbon wrapp the tank no way out of drilling the hole in the plastics just do it (ps get it right 1st go) check 12 times drill the once  not check once drill 12 air box needs to be hacked only a lilttle bit And you should have a inbox

Hey buddy I appreciate the reply and I understand where you're coming from and all, but If I have to drill through the shrouds or similar I just won't be doing this swap. The thing is I already HAVE cut and molded the 04 CRF250 tank for a perfect fit, and now no drilling, and the shrouds sit perfect with the bike/frame.

My stock tank is the off white/yellow one. I finally contacted that carbon fiber vinyl company 3m about wrapping my gas tank, desperate to find a way to make it dark/black and that stuff will not work on any plastic gas tank. The bubble free only works for application and air bubbles, not constant petrol vapor.

The only real option is to dye the stock tank, and at that point it's infinitely easier to mod the newer tank, which is perfectly black, perfect fit, and just 1000x better for the job. All these bike are twin spar frames, so the basic "ridge" of all the tanks fits on the frame. It's just a matter of making sure the bottom is molded and perfect.

The crazy thing is the tank I've already made perfect is actually the WORST possible one to try and fit. The 09-12 tank will be wayyy much less work and will fit my bike ALMOST naturally. It'll need a little work, but the final fit and look will pay off 10fold!!!

So settle the dispute. What year is your bike? I say gen3 02-07 KCD says 00-01...And what exactly did you have to "hack" on the air box because I am totally against anything like that. I can always make a cut and mold something even better I guess. I'm going to wrap the entire air box inside and out and subframe in that carbon fiber 3d wrap. It's going to be stupid.