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    #31
    Ultrasonic won't hurt the powdercoating. But I'm a big fan of washing powder for degreasing in case like this (US translates to the powder stuff the missus washes the laundry with). It really does do what all those charming fellers with big smiles say in the adverts and there will be nothing for the grit to stick to.

    However, althought it won't be stuck down it will just sit there and will need to be flushed out - hence the pressure washer.
    79 GS1000S
    79 GS1000S (another one)
    80 GSX750
    80 GS550
    80 CB650 cafe racer
    75 PC50 - the one with OHV and pedals...
    75 TS100 - being ridden (suicidally) by my father

    Comment


      #32
      hi gents

      well i have done the sensible thing and no going to rush around fot friday rally
      even though my local 'barneys bikes' told me where they get there parts 'fowlers' in bristol they even had stock and could del 2 valves for £100 the next day

      fairly confident i know the path of the oil as i said before
      think i'm very lucky cams seem to be ok

      think l will go for the DAZ option

      also pointed out by friend has some of the grit gone down the cam chain tunnel !!!!!!!!!!!!!!!!!! and think is does not go down to the filter more like into the big ends etc

      on my ride i only did 4 miles and 1 of those i was pushing it

      time to order the valves any way from my local shop

      vic

      Comment


        #33
        Like I mentioned above, I have spare valves. Shipping to England is $15 for a small Flat Rate box. You can have the valves for free. Let me know if I can help.

        BTW, are you sure the valves are bad? Maybe they just stuck in the guides and will be fine with all the grit removed?
        Ed

        To measure is to know.

        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

        Comment


          #34
          yes 2 are bent

          when I push them in and spin them by hand. Looking at the valve in the combustion chamber you can see it move 1 to 2mm as it turns

          thanks for your gr8 offer nessism i take it they are old valves? is that ok to fit them
          or should i fit new ones ??

          i'm still going to my rally on friday amazingly i put a request on face book and a friend is going to lend me his kaxazaki vn1500 or suzuki gsf600 [work hack ]should take the 600 but don't think i could cope with the ridding position.
          so the cruiser it is even though its going to take some cleaning when i get back, rain forcasted

          Comment


            #35
            Ed will have measured those valve stems I'm sure (check his sig line). If they are within spec limits they'll be fine. You should also measure the valve guide to valve stem clearance to see if that is within tolerance. If that's out it's new valve guides.
            79 GS1000S
            79 GS1000S (another one)
            80 GSX750
            80 GS550
            80 CB650 cafe racer
            75 PC50 - the one with OHV and pedals...
            75 TS100 - being ridden (suicidally) by my father

            Comment


              #36
              I have a number of valves that measure just a smig under the "new" specification, and well above the service limit for valve stem diameter. Drop me a PM to discuss as necessary.
              Ed

              To measure is to know.

              Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

              Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

              Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

              KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

              Comment


                #37
                I've just seen this thread. Sorry for your trouble. It's deja-vu for me. I sand blasted the head on one'v my 1000's and I must'v spent four hours with a pressure washer and compressor cleaning it out plus more on other days waiting for it dry and blowing it again and again. I thought I'd got it because no more media came out.
                Everything was fine.. for a while. The engine no longer is the pefect shhhh sound it used make after I first built it. Now it sounds like what it is, a 50k engine.
                I'm gutted.
                My answer is that I'm stripping my engine and I will change all it's guts, I will keep the crank cases to keep the correct numbers/paperwork.
                Your engine will certainly need to be completely stripped and cleaned, the media will be throughout your engine.
                sigpic

                Don't say can't, as anything is possible with time and effort, but, if you don't have time things get tougher and require more effort.

                Comment


                  #38
                  hi of on my rally this morning

                  never ever wanted to pull apart bottom end!

                  still don't want to. will have to think about this over the weekend

                  will check cam chain tunnel in the barrel to see if there is any sign of grit

                  arggghhhhhh


                  vic

                  Comment


                    #39
                    Originally posted by tatu View Post
                    Your engine will certainly need to be completely stripped and cleaned, the media will be throughout your engine.
                    I have to agree, chances are some of that stuff made it down the cam tunnel after even a few miles riding......
                    Roller bearings on the crank might stand up to a small amount of grit, but oil pump and little ends won't.....

                    Comment


                      #40
                      hi all
                      well i did get to ther rally on a vn1500 a friend lent me .

                      woulld rather have gone on the GS of course

                      found a friend who had a cleaning tank at work, he even put new fluid in (thanks kingsnirth power station)

                      i will still give another clean my self ,with washing powder etc

                      with reference to grit going down can tunnel i have checked and no signs yet
                      still need to take oil out and sump of

                      nessism is going to send some valves over canada

                      so things are looking up


                      its great to see such people comming together and helping each other out,
                      i hope i can repay others in the future





                      Comment


                        #41
                        If your not gonna bother splitting the cases to get everything spotless, you might consider removing the two outer cases and dropping the sump and filter cover, stripping out the strainer, oil pump, clutch etc and then flushing a couple of gallons of kerosene through the crankcase mouths, washing everything through the crank and gearbox? Only take ya a couple of hours.

                        Comment


                          #42
                          Originally posted by Guy View Post
                          If your not gonna bother splitting the cases to get everything spotless, you might consider removing the two outer cases and dropping the sump and filter cover, stripping out the strainer, oil pump, clutch etc and then flushing a couple of gallons of kerosene through the crankcase mouths, washing everything through the crank and gearbox? Only take ya a couple of hours.
                          This is worth trying. I've successfully flushed out some engines that have had nests in them using this method.
                          79 GS1000S
                          79 GS1000S (another one)
                          80 GSX750
                          80 GS550
                          80 CB650 cafe racer
                          75 PC50 - the one with OHV and pedals...
                          75 TS100 - being ridden (suicidally) by my father

                          Comment


                            #43
                            Hi

                            Well received the valves yesterday



                            from NESSISM many thanks (what a forum even sent an extra valve )


                            All I have to do now is get my self back in the garage and do the work, we are having a bit of a heat wave here at the moment 29.9 C yesterday, beating highest ever record for October,,




                            must get this bike done before autumn gets here


                            a friend took the head to work and put in there cleaning tank so that will help, but i still managed to get more grit out about half a pea's worth

                            i'll keep digging

                            i have also bought some parrafin (kerosene) ready for flushing through


                            Vic

                            Comment


                              #44
                              well having given the head another clean (powder coating not so shinny now :-( )

                              because as said before the buckets were stuck in the head because of the grit,even though all grit out when trying the buckets in they are TIGHT HAVE TO KNOCK IN AND KNOCK OUT ,,,,,S**T

                              as they are rough so just tried for 1/2 an hour
                              wraped some 800 wet and dry around a cut up toilet roll rubbing up and down with little effect,,,,,,,,,,,,

                              the hole is about 33mm so might try and find some plastic pipe and maybe rougher paper will do the trick

                              begining to think i may need a new head by the time i'm finished

                              ANY ideas gents

                              vic

                              Comment


                                #45
                                I would use 240 paper and just keep checking if the buckets fit more frequently. With 800 it'll take forever. You're just trying to take off the ridge scars so, if you're careful, you won't rub too much away and have the things slopping around. The plastic pipe / paper trick is a good one too. If you can get a good fit rub the pipe round and round as if you were lighting a fire with a stick backwoods style.
                                79 GS1000S
                                79 GS1000S (another one)
                                80 GSX750
                                80 GS550
                                80 CB650 cafe racer
                                75 PC50 - the one with OHV and pedals...
                                75 TS100 - being ridden (suicidally) by my father

                                Comment

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