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Maxx MRP Maxx MRP
8/14/2019 3:43 PM

I adore the USA since I was born, but I'm French so please excuse me for my language, I translate with Google.

That's it I find an old CR 250 as in my youth, those who have friends on facebook have already seen some pictures.
the time to reduce the size of the photos, I would start posting here with comments.
see you soon for more

It goes from there

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www.maxxracing.fr


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Maxx MRP Maxx MRP
8/14/2019 4:00 PM

For suspensions, original it's really not good, ok at the time we drive with, but we're more at the time and with the evolution that have known the suspensions, I can not see myself go back , this fork is not even adjustable in rebound and rear shock not adjustable in hi-compression.
so for the front, I will adapt the fork (either the original KYB PSF 1 or the spring KYB that I mount on my 450 CRF 2013) triple clapms, the front wheel, the braking assembly and the wheel axle.
for the back I will try to find for cheap, an original damper of 250 cr - crf / 450 crf until 2008 and of course it all go into the magic cauldron of MRP to personalize all that according to what I I appreciate and need.

I'm going to quest also a seat-cover Tecnosel (thank you Ove for the link).

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Maxx MRP Maxx MRP
8/14/2019 4:30 PM

go on attack with some photos

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Godcho Godcho
8/15/2019 2:14 AM

Welcome to Vital Mx (I'm French too).

I like projects like yours when the bike is really dirty: the renovation will be even more impressive with the pictures BEFORE / AFTER.

Looking forward to seeing the beginning of the restorationwink

My Instagram: maxgodcho

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Maxx MRP Maxx MRP
8/15/2019 5:28 AM

Thank you Godcho wink ( I feel less lonely suddenly ) laughing

we continue with the pictures of this bike and of the dismantling

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Maxx MRP Maxx MRP
8/15/2019 5:36 AM

very big problem.
the screw is locked in and I can not separate the two parts, I remove the screws from the inside and spraying with oil of sting and I also heat, it does not move a milimeter

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and we attack the opening of the engine

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surprise by depositing the valve box, the cylinder has been prepared (well we'll see later) and for the moment I'm going to mount only the reeds Boyesen (which I have always done on all my 2 times since the beginning, the change is drastic) and then once the restore is finished and I have a little more side, I would mount a Rad Valve.

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not a fart of rust on the stator

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the part that made me very scared considering the number of years that the bike did not ride, it's like new.

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Maxx MRP Maxx MRP
8/15/2019 5:43 AM
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I wondered what it was like to be a rag.

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It's okay

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this too

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not too bad considering the age of the machine

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we return to it, preparation but half, no retouched transfers (diagrames) and no cases notigned either, but hey it is neccessary on a 250 ?? although in 88 on the mine I made the total.

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Maxx MRP Maxx MRP
8/16/2019 2:08 PM

Have you ever seen a crankshaft seal in such condition? that explains the ton of black fat on the engine and the frame.

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therefore wear of the ring and therefore replacement

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So there sensitive souls abstain, we will proceed to the separation of two casings, the tools of torture are ready

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and in the end the bearings are ok, they have been changed in the course of life of the bike, but I will still replace everything as it is open.

the box is ok, no broken teeth or other suspicious marks, me happy

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sandman768 sandman768
8/17/2019 4:56 AM

You have your work cut out for you! I would let that swingarm chain adjuster bolt soak in some type of spray penetrant, then heat the arm around the bolt when trying to remove, drilling that bolt out is a pain. Good luck, look forward to the restore!

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Maxx MRP Maxx MRP
8/17/2019 7:43 AM

Thank you Sandman wink , but by dint of annoyance and patience, I finally got to disassemble.

here is the rest of the work on the swingarm.
I found myself with the screw of the tension adjustment of the chain of transmission, twisted and blocked by the rust.
Seeing that this part of the swingarm seems to be in 2 separate parts (actually there are three), I decided to get out all to have more ease to deal with the screw in question.

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We see that on the 2 photos below, a kind of epoxy glue.

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to try to spread, to get out the part where there is the thread.

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and after a lot of liters of perspiration, I managed to separate everything, I understand why it was so difficult

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Maxx MRP Maxx MRP
8/17/2019 7:50 AM

quick and partial cleaning of the room and as the screw is break flush, drilling and then it will tap.

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First sanding and catching impacts, polish later.

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Maxx MRP Maxx MRP
8/17/2019 3:28 PM
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And in trying to extract the old bearings, huge disaster, I cry.

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Chance1216 Chance1216
8/17/2019 5:40 PM
Maxx MRP wrote:







And in trying to ...more

Shit. I'm crying for you. That sucks.

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Brad460 Brad460
8/17/2019 7:05 PM

Looking forward to watching this build..I restored a 1991 CR125.

Regarding that swing arm..they are fairly cheap on eBay.

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sandman768 sandman768
8/18/2019 4:23 AM

These old abused bikes will test your patience and mechanical skills. That looks like part of the linkage that broke? eBay is your friend!

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Brian_Bowles Brian_Bowles
8/18/2019 5:57 AM

You are doing a great job!

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Maxx MRP Maxx MRP
8/19/2019 4:04 AM
Chance1216 wrote:

Shit. I'm crying for you. ...more

Thank you for your support in my distress.

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Maxx MRP Maxx MRP
8/19/2019 4:13 AM
Brad460 wrote:

Looking forward to ...more

Ah cool, as soon as I have a little time I would go see your restoration if you posted it here.
For the damper rod, I actually look on ebay, I have almost nothing, I found here in the US, but they do not send to France, and the price is expensive and the port and customs fees surely.
I finally find one in Italy, so not too far from home.

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Maxx MRP Maxx MRP
8/19/2019 4:15 AM
sandman768 wrote:

These old abused bikes ...more

yes that's what I realize now.
it's the linkage that broke

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Maxx MRP Maxx MRP
8/19/2019 4:18 AM
Brian_Bowles wrote:

You are doing a great job! ...more

I do not know if I'm doing a very good job, I do not have big tools, so I'm doing what I can to make it as beautiful as possible

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Maxx MRP Maxx MRP
8/19/2019 4:24 AM

after I would like to paint the half crankcase or there is the water pump, this color, but I do not know the reference color to tell the company that will make my white frame powder coating.
Because there is no cerakote in France, and I do not know where to find Duracote either.

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Maxx MRP Maxx MRP
8/19/2019 5:00 AM

Work on the pipe
So the denting of the pot with compressed air went well, except that at a time -----> air leakage and there I realize that there are cracks where they welded nuts (messed up) to install a protection (carbon, aluminum ... I do not know) so it was necessary to close by welding as I could because I do not know what were soldered nuts, but it m made fireworks, so not simple and the sheet is fine.

I decide anyway to turn these nuts, which took me in the morning, a sanding stroke to see more clearly below the rust and try to remove the solder and solder patches.
Only I can not get rid of these cracks, I weld for the eliminated but once cool I see another that is created next and sanding I see others!
So do you have an idea for me to be, or you know a specialist (can be a cauldron, I do not know) who could redo the two parts of the pot elbow, just cut or it is crack and redo with the sheet intact, if there are welds in + it will be more beautiful, too bad for the original appearance of the Pro Circuit can not be found, if it can save the pot.

I also did a test of blueing on a sanded part to see if I could redo it on the welds as at the origin, it's good it works and it's beautiful

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Maxx MRP Maxx MRP
8/19/2019 5:20 AM

Now we're going to have a good laugh

I started to see the shock and as I've already said, it will not stay on the bike, say that we rolled with it at the time, the rod and the body with the piston are smaller and end that for a 85 YZ, even the KX 85 with its original shock ultra shitty, is limited bigger (it's an image) in any case as for the fork, out of question that I roll with it, because even if I reach my goal of weight loss for January 2020 I think that for my weight of form I would always be too heavy for the rod cash strength of the receptions of jumps.

So I may be (if I find the parts) recondition and put on sale for anyone looking for an origin of this time.
You will notice that I just cleaned it quickly and especially the color of the oil that must have been the original one 30 years ago.


After cleaning but before dismantling

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Yum, a good virgin oil dating back 30 years w00t laughing

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Passage of oil in the stem, closed.
later, the dampers will release this hole to facilitate the exchange of oil flow between the two chambers.

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Maxx MRP Maxx MRP
8/19/2019 5:26 AM

Well as the more years go by, the more the parts (even new ones) become rare, I start to take what I need most now to complete the bike and that is or will not be manufactured. Pro Circuit side so it should be the same as the pot is no longer manufactured at PC.

other pieces will arrive, and I will update the photos

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Maxx MRP Maxx MRP
8/19/2019 5:38 AM

I get the crankcase and the bolt of the sandblasting, I'm happy but I still expected a better job, already it was necessary for me to blow everything to come home, I told you the sand thickness in the Xmax's trunk, the sand goes everywhere even with the casings closed and filled with bubble plastic + all the plugged holes.
But there are still places where there is still paint and I will be forced to sand, for the price announced at the start which quadruple when I returned the takes! so I'm a little angry, in short, it only takes me once.

All the gearbox bearings are ordered, so the needle cage in the one-handed housing, I'm going to break it down and I'll see to extract the one from the water pump / valve

Fork stop, I test with a large nut to take the measurements, so a stop of 8 mm will be ok, so I think rather than change the frame (before painting) rather as I was blown , drill and tap the tee and install a rubber stop 8 mm thick, it must exist and which is inserted between the two to smoothly damp if I put the handlebars abut on a huge scrub or whip

Spacer for the fork tee made (aluminum) remains to find a dust cover washer of 250/450 crf because that of the CR is in 26 and I need 30 inter diameter, not the most complicated, but I did not not duplicate because the XTrig tee that I mounted on the 450 was not delivered with the dust cover at the price of the thing, finally ... I groan today. lol

it's gone for some photos.

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Maxx MRP Maxx MRP
8/19/2019 5:43 AM

So today I am not without fears tied to the linkage triangle, but having soaked all night in the penetrating, I did not have much trouble.

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Maxx MRP Maxx MRP
8/19/2019 5:47 AM

Then I decided to attack the two blind bearings, so I test the crumb of bread (because no bread) and it works, and for the other it did not come with the crumb, so I made myself a small makeshift extractor that worked very well after a little heat of the crankcase.

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and I received part of the engine bearings yesterday, so before reassembling the bottom engine, I will take care to align the crankcase with the transfers of the cylinder

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Maxx MRP Maxx MRP
8/19/2019 5:51 AM

Then disassembly of the parts of the back of frame and extraction of the rusty screws, it cost me the little of the fuck-finger laughing of the right hand and 1st blow of cleaning of the box with air

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Maxx MRP Maxx MRP
8/20/2019 9:21 AM

A new series of new parts have arrived today, so I add them to the rest of the pieces in the photo.
For info the plastic frame protections are for sale because between the time I place the order and the receipt of the package this morning, I find the Alu protections, so I do not need it.

I post a picture of the set then in detail

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DT-One air filter

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Boyesen Power Reeds (I have always built this since 1981) waiting to later mount a Rad Valve for the pleasure of the beauty of the parts.

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Braking rear brake pads, no need to present the brand, it bites well and the resistance is not bad either

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Chain skates

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Maxx MRP Maxx MRP
8/20/2019 9:28 AM

The famous front plate typical, to go with the final look that the bike will have

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kit DP Clutches (delivered in a complete box, smooth disks, filled disks, springs) no need to oil the disks during the assembly, it is one of the specificities of this kit

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Carburetor repair kit

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Pipe springs kit

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Boyesen ignition and clutch cover

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Pro Circuit 304 Silencer

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Bel Ray of course

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Master cylinder + caliper to go with the fork of 450 2013 that I ride on the bike

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