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      JUST IN!   04/24/2018

      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

Kirk123

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About Kirk123

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  1. Ah yes - nor does mine. Looks like the original had 4 springs - not sure where the fourth would attach too.. Mine does hit the side of the frame slightly and can be pushed over to the sump plug - Ill use it as it is and report back if any damage! May I ask why the engine swap? I have a MR175 as well (and a spare engine..
  2. Perfect - thanks for the reply - mine has only two springs - I will take another look today. Thanks again - Kirk
  3. Hi All, Hope you are well! Long time no discussion on here - mainly due to not getting in the shed as much as life takes over.. MR working well - and has had an amount of tinkering - seems it always needs work to keep crisp. Ive also been looking at doing a cr125 - running now - just working on tidying it up - and DG exhaust clearance seems tight!. not to mention a US import CT90 I used for a charity challenge (and have managed to seize twice!). Any more news on your amazing projects?
  4. Hi there, Sorry if this is a silly question but I have just fitted a dg ehaust to my 74 cr125 and just wondered if any one elses is quite tight to frame and sump plug? If i push the front of the pipe against the springs (side to side) it can hit the frame and touch the sump plug. Is this right? Any advice or pics really appreciated. Thanks Kirk (uk)
  5. Hi there, Sorry if this is a silly question but I have just fitted a dg ehaust to my 74 cr125 and just wondered if any one elses is quite tight to frame and sump plug? If i push the front of the pipe against the springs (side to side) it can hit the frame and touch the sump plug. Is this right? Any advice or pics really appreciated. Thanks Kirk (uk)
  6. Hi Greg, Thanks for the part number - I will look it up! Yes, the bike is road registered now and legal for the road! Im not sure how many will be on the road in the uk - Ive only ever seen mention of 1 other! I will be working on refining it a bit now - so watch this space! I have managed to get a spare engine so will play around with that one - and I think I might do your suggested XR forks. Will be in touch Kirk
  7. Hi Ray, Greg, Hope you are both well. Just a quick update - (been a while since Ive been on here - work im afraid tends to get in the way!). Re-jetted the bike - now running a 125 main which seems (fingers crossed) to have solved the hesitancy issue. Biggest news is that the bike is now registered for UK roads! Bit of a result as it was rejected the first time. Bike strong on the road - but will now look at the gearing - as per your previous posts.. and bassini exhaust performing well - if not a bit leaky around the header (will get some sealant on that when I get a minute) - and it is a little noisy! Will now look for some early XR forks to see if that helps the front end.. Hope you both have a great Christmas - and if i get chance to tinker over the holidays - I may need your help some more! Thanks for all your help over 2014 - made the difference between giving up and having fun! Email soon Kirk
  8. Hi Ray, Thanks again for the advice, I will have a look and spend a bit more time with the bike this weekend so will have a look at the main jet (i have a spare from the kit you advised) and will check for sealing issues (which wouldnt surprise me as the carb has been on and off 5 times!) The plus side is I can do a carb strip and replacement in about 20 minutes! I will confirm the float level is set right and see what happens next!. I have notice it will occasionally cut out from high revs to a stop so will check this at the same time. Did do some green laning last saturday and met up with a person on a KTM 600. He was quite surprised at how quick the MR is - but it was very slippy and the weight helped me out. Next job after the carb is to widen the pegs a bit - i have the parts to weld on. The do seem very narrow to me! Good advice on the gearing. I get around 60MPH indicated (certainly feels like it!) so can afford to loose a bit to make it better off road. Does a CR sprocket fit straight on? Greg, good to see you back on the site - I nearly needed your help with the Powerdynamo wiring but all sorted. Good kit!
  9. Hi There, Glad your bike is up and running - -let us know how your trip out went! How did you cure your bog? Ray, Managed to fit the ignition over the weekend - theory was straight forward thanks for your detailed instructions. The only issue I had was trying to ensure I didnt move anything when tightening the flywheel!! that took me a few goes I have to say. Bike seemed good on a short run yesterday - although slightly hesitant at full speed - (i realise now what you mean about the gearing! If i can find a second hand engine id like to build one with your recommended MT transmission). Any advice on the hesitancy?> do you think my floats may be slightly high? One thing Ive always wondered - do you set the floats when the float arm just touches the needle - or when the springy part of the fuel supply needle is compressed?
  10. Perfect thanks Ray - Ill get one ordered and let you know when Im about to do the job!
  11. Thanks Ray, I have just received the Powerdynamo ignition as recommended by Greg. So will fit that with any luck tomorrow. Greg mentioned timing the ignition at 1.8mm before TDC. Can you please advise the best way to do this? Do I need to use a dial indicator (is that the one that looks like a watch with a rod that pushes up and down?) As always any advice gratefully received. Thanks again Kirk
  12. Hi Ray, Greg, Finally had the bike out on the road today taking it for a MOT - as part of the registering process. The bike was great - but on the way back after an amount of road work the bike felt like it was missing a bit - especially at full load in fifth. It has done this twice before - and was a blocked main jet. This time the pilot seemed to be blocked so I cleaned it and tried again - same thing happened. Stripped the carb and the pilot looked blocked again. swapped the pilot out for a new one (from the rebuild kit you advised on - its a larger one but i thought worth a shot. Could this problem be something else? maybe ignition when its hot? I havent fitted electronic ..... yet! As always all help really appreciated! I can tell this bike is going to keep me on my toes! Thanks Kirk
  13. Great - its the width I find a bit narrow - so I think I will try to source some wideners like you fitted. Thanks for the swift reply.! Im due in America on Wednesday so may look to pick some up then.. Thanks Again Kirk
  14. Hi Ray - thats a great idea - I prefer a quick throtle too - and the one I have fitted is about half a turn - should have asked you first! Had a bog issue today - traced to a partly blocked main jet - im hoping this is the last peiece of rogue muck in the carb!! One i fixed the bog. I did my first bit of proper off road - and undid most of the paint finish with a big layer of mud. Bike is great fun!! really flies and i havent swapped the needle yet - but did try the 3.5 slide -really good! The only thing i did notice is the pegs are small... would you happen to have swapped yours?
  15. Hi Ray - thats a great idea - I prefer a quick throtle too - and the one I have fitted is about half a turn - should have asked you first! Had a bog issue today - traced to a partly blocked main jet - im hoping this is the last peiece of rogue muck in the carb!! One i fixed the bog. I did my first bit of proper off road - and undid most of the paint finish with a big layer of mud. Bike is great fun!! really flies and i havent swapped the needle yet - but did try the 3.5 slide -really good! The only thing i did notice is the pegs are small... would you happen to have swapped yours?