dtluke Posted October 17, 2013 Share Posted October 17, 2013 As some may no i had to rebuild the topend of my dt again. as my powervalve needed work doing (skimmed) to match the bore, so all is well no leaks fires up alot better, and sounds good before when i started it on the choke it would be grumpy now it idles highiesh on choke like is should. really happy with the way shes rideing plenty of power but havnt wound her out yet . Have hit power ok just takeing it easy..How long u think the proccess of running in a rebuilt topend takes.. Sure its only piston and rings??? Well and a rebore! So my main question is ive done just say 100 mile and the fecker is eating 2 stroke. going down nearly as quick as my fuel were will i start to check any way of adjusting it?? Its on silkoline comp2t at present. What if i disconnected it and ran a premix or is that a bad idea?? As i understand that the pump is working with the throttle split in 2 ,to the carb so will in theory be sending the right amount of oil at different rpm.. please correct me?? And if i run a premix what will it be for an all rounder because ive a habbit of letting her rip as well as a bit of enduro slow climbs and all (low rpms )if you get me Ps.. Thanks in advance for any comments digs or sarcasm luke. Link to comment Share on other sites More sharing options...
slice Posted October 17, 2013 Share Posted October 17, 2013 Don't run a 2 stroke myself anymore but back in the day we all used premix in our bikes cos there was no other way until the Suzukis and Hondas came along, the only real problem with premix as I remember was that if you ran slow all the time you oiled up the plugs A LOT or if you ran fast you ran HOT and under oiled, you can run premix but it's not as good as the pumps that are on bikes today, not by a long way, if you don't mind rebuilding your bike on a regular basis then go for it but I would use the pump every time. There are a lot of strokers on here who will have better and more up to date advice so see what they say before you do anything. 1 Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted October 17, 2013 Moderator Share Posted October 17, 2013 500 miles. Use a quality 2 stroke oil and use the pump. Don't be tempted to do a little premix as well when you are running in. The oils today can handle a lot lower ratio. That's my advice anyway. Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 Don't run a 2 stroke myself anymore but back in the day we all used premix in our bikes cos there was no other way until the Suzukis and Hondas came along, the only real problem with premix as I remember was that if you ran slow all the time you oiled up the plugs A LOT or if you ran fast you ran HOT and under oiled, you can run premix but it's not as good as the pumps that are on bikes today, not by a long way, if you don't mind rebuilding your bike on a regular basis then go for it but I would use the pump every time. There are a lot of strokers on here who will have better and more up to date advice so see what they say before you do anything. yea cheers for that fella..hopefully going to book it in with yamaha next week as i really want to keep the pump in use as its intended., i no theres a way of adjusting it i just dont have a clue how! defo pumping out to much as what it should tho. Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 500 miles. Use a quality 2 stroke oil and use the pump. Don't be tempted to do a little premix as well when you are running in. The oils today can handle a lot lower ratio. That's my advice anyway. is silkoline good? was recommended at bike shop for mx 2t.. defo dont need to do a little premix as i no its getting the oil ok. Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 that long to run the piston in?? Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted October 17, 2013 Moderator Share Posted October 17, 2013 Any quality synthetic will do. I like castrol power 1 racing myself. 500 miles with a gradual increase of revs as you go. The better the rings wear in the longer you can go before you need to have the top off again. Just my opinion. Link to comment Share on other sites More sharing options...
Preload Posted October 17, 2013 Share Posted October 17, 2013 When running in use mineral oil it beds in the rings better. Then move to synthetic as said before oils are far better than the 70's. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 Have a look if the pulley on the pump is operating properly at you twist the throttle. When the throttle is closed you will see that the 'pip' on the pulley is aligned with the peg (small screw) in the piston rod, If it isnt then use the cable adjuster to achieve this. Thats the only adjustment available 1 Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 Have a look if the pulley on the pump is operating properly at you twist the throttle. When the throttle is closed you will see that the 'pip' on the pulley is aligned with the peg (small screw) in the piston rod, If it isnt then use the cable adjuster to achieve this. Thats the only adjustment available ok ill have a look shortly.. sorry too sound dumb but just to check iwant to take the oilpump cover off and aligne the pully with the peg ill let you no what i come up with mate cheers chap Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 ok ill have a look shortly.. sorry too sound dumb but just to check iwant to take the oilpump cover off and aligne the pully with the peg ill let you no what i come up with mate cheers chap yes, when the throttle is closed they should align. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 This should give you the idea Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 This should give you the idea im lost thats a bit different to mine and i havnt a baldy what im meant to be lookin at..if i remember right when i changed my handlebars i adjusted the rev play on the throttle would this have anything to do with it? reason why i say this is then i just looked at the pully on the pump it was tight asif was stuck on a bit but when ive just put the throttle cable to how it was previously u could see it adjust on the pump also. if im thinking right it is pumping constanty (too much).. plz to god let this be it!!??!! otherwise yea i didnt have a clue what i was looking for allignment also started it up after and still cant believe how much crisper she sounds after the work done to p/v and new piston. just want to no why shes guzzling the 2t .suppose its not so bad as im running in new parts or is it?? 1 Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 post up a picture of yours luke. Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 http://s1011.photobucket.com/user/dtluke/media/1378772_663050343728082_2076203680_n_zps0aca4d66.jpg.html Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 and thats the cable bit i adjusted http://s1011.photobucket.com/user/dtluke/media/1383296_663052290394554_812401377_n_zpsfb416050.jpg.html Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 bugger!...I'm not familiar with how to set up that pump Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 bugger!...I'm not familiar with how to set up that pump no worries pal ill just see if she runs any better.. high hopes but...otherwise will have to go to the garage theres noway it should be going through that amount of oil..would of thought 4 tanks atleast to the litre of 2t Link to comment Share on other sites More sharing options...
dtluke Posted October 17, 2013 Author Share Posted October 17, 2013 would it be different from the older model 2000 as im able to check 1 all i can do is see if it looks to be in the same placce. that is if they are the same?? Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 17, 2013 Moderator Share Posted October 17, 2013 I once had a 2003 DTR and the pump was similar to the pic I posted up Link to comment Share on other sites More sharing options...
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