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Post by hanlia1888 on Apr 22, 2010 7:12:53 GMT
hi guys out on my px 125(malossi 166) yesterday doing about 60mph on the motorway and the f*cker heat seized ..  just wondering what any of you think could have caused it ... set up ...malossi 166 no porting just bolted on ,20/20 carb 112 main jet,simonini exhaust pilot jet out 1.5 turns. scoot was going great till this happened ...stupid question i never had any side panels on would this have made a difference. i used to run it with a 115 main but changed it to the 112...  ...many thanks |
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Post by ttscshaggy on Apr 22, 2010 14:39:05 GMT
maybe didnt put enough 2stroke in
as its kitted youll need more than standard 125
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Post by hanlia1888 on Apr 22, 2010 17:44:56 GMT
hi mate its a 2002 px with autolube but i always add a wee tiny drop of 2 stroke in the tank at every fill.....  |
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Post by gazspeed on May 18, 2010 18:28:44 GMT
When you were on the motorway were you using part/little throttle to maintain a steady cruise?
If so main jet would not really be getting used anyway, probably leaned out.
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Post by willspeed on May 19, 2010 20:49:23 GMT
hi mate its a 2002 px with autolube but i always add a wee tiny drop of 2 stroke in the tank at every fill..... This leans the mixture out even more, ether run it without autolube all together and use the 2% cup method or use autolube addition only and no addition in to tank. |
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Post by newboy on May 25, 2010 15:40:30 GMT
ive done the same, if i use to much 2 stroke is it bad?
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Post by OliMonster on May 26, 2010 15:19:42 GMT
Very. Too much oil means your fuel is too thick, so not enough gets through your jet and into the crank case and cylinder. As a resut, your motor will be running too hot because it'll be running lean, and you risk a heat seize no matter how much oil you put in.
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Post by 225worb on May 26, 2010 22:18:13 GMT
What plug are you useing ? ? you really wan to go maybe 1/2 sizes colder..what pipe are you useing too Personnelly those 166's are awesome kits BUT for it to work well and to its realiable potential because the base transfers on those are pretty large would be to match the cases change the crank or just modify yours ,P200 carb (24/24) up gear it ,i would use again p200 gears and clutch and you will be very surprised on how well she'll go .....  |
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Post by newboy on May 27, 2010 21:51:49 GMT
nik, i brought a px200 banded clutch. The drive cog had more teeth so i swapped it for the one i had in my other clutch, could i swap to the 200 drive cog? an would it improve performance?
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Post by 225worb on May 28, 2010 16:59:00 GMT
Does it use the cosa type clutch ? ? ?
Their different to early P200's and 125's(smaller version of the 200)
I use a standard genuine 3 plate clutch with stiffer springs in my 225 malossi and its not banded either and works very well with help from a nylon lined multi twine cable .....
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Post by newboy on May 29, 2010 0:28:57 GMT
yes cosa type mate 8 spring
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Post by 225worb on May 30, 2010 18:46:06 GMT
Oh right ......so how many teeth ? ? I think youve a choice im pretty sure that the T5 or /and the 200 should go straight in ( but just buy the drive cog .....
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Post by Juan on May 30, 2010 19:38:21 GMT
T5 20 teeth
PX 125 21 teeth
PX 150 22 teeth
PX 200 23 teeth
P2 units will only mesh with their 65 tooth primary, the rest will be fine on the 68.
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Post by dmilk on May 31, 2010 0:16:19 GMT
Mate had a same problem ... drilled a 8mm hole under the air filter just by the usual one seemed to do the job ..
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Post by 225worb on May 31, 2010 17:12:21 GMT
Yeah did the same mod to a couple of mates 125 and helped it run alot better ....
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Post by hanlia1888 on Jun 27, 2010 7:07:59 GMT
hi all many thanks for all your answers and help. now i changed the carb to a px 200 24/24 carb with 118 main jet all was running fine for about a week done a few hundred miles ........was going to a rally at dunbar on saturday when it heat siezed again on the bypass....  ive now up,ed the main to a 120 and i,lll give that a try does anyone else have the same set up........? |
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ash
Automatica
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Post by ash on Jun 27, 2010 10:59:40 GMT
i would say you need a jet higher than 125 my friend had a dr180 kit, p2 carb, simonini pipe and that had a 125 in it
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Post by clarky on Jun 27, 2010 19:23:05 GMT
Same happened to me on pinasco 177 kit a few years ago at 70 mph-didnt catch it quick enough and lost control came off and broke my shoulder ouch anyway checked the engine out and couldnt see any reason for it but i was using autolube on 24mm carb turns out after many conversations that i should ditch the autolube and tank fill with oil as pump cant keep up with the fuel flow .since then never used autolube.
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Post by thedarklord on Jul 15, 2010 10:06:33 GMT
i had a problem with my p200 nipping up turned out the autolube was not working right.i drained my autolube and just top the tank with 2stroke not had a problem since.
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...many thanks
