Posts
207
Joined
11/18/2015
Location
FR
Maxx MRP
8/14/2019 3:43pm
8/14/2019 3:43pm
Edited Date/Time
11/17/2022 4:33pm
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
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
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).
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 restoration
we continue with the pictures of this bike and of the dismantling
The Shop
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
and we attack the opening of the engine
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.
not a fart of rust on the stator
the part that made me very scared considering the number of years that the bike did not ride, it's like new.
I wondered what it was like to be a rag.
It's okay
this too
not too bad considering the age of the machine
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.
therefore wear of the ring and therefore replacement
So there sensitive souls abstain, we will proceed to the separation of two casings, the tools of torture are ready
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
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.
We see that on the 2 photos below, a kind of epoxy glue.
to try to spread, to get out the part where there is the thread.
and after a lot of liters of perspiration, I managed to separate everything, I understand why it was so difficult
First sanding and catching impacts, polish later.
And in trying to extract the old bearings, huge disaster, I cry.
Regarding that swing arm..they are fairly cheap on eBay.
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.
it's the linkage that broke
Pit Row
Because there is no cerakote in France, and I do not know where to find Duracote either.
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
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
Yum, a good virgin oil dating back 30 years
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.
other pieces will arrive, and I will update the photos
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.
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
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
DT-One air filter
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.
Braking rear brake pads, no need to present the brand, it bites well and the resistance is not bad either
Chain skates
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
Carburetor repair kit
Pipe springs kit
Boyesen ignition and clutch cover
Pro Circuit 304 Silencer
Bel Ray of course
Master cylinder + caliper to go with the fork of 450 2013 that I ride on the bike
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