project: were sorry

5 motors between us.
my first one did the same thing as this one, full detonation. the motor i have now, was a fully running motor from a low hour 03 blaster

when i took it to creek cycles. i had tested for leaks and comp. then i had it jetted, tuned at creek cycles.

my buddys 1st motor went lean and ate the rings from temp drop and no jet change, so did the new motor he got due to lean jetting. so he had the top end done at creek cycles. his motor blew 1 ride after break in. never even went over 3/4 throttle.


needless to say but i WONT be going back to creekcycles, obviously he has no idea what hes doing with 2 strokes or testing/tuning them.
 
again....re-leak test it as it sits
i'm betting on a head/base/intake gasket leak developed.
was it properly heat cycled and head/base bolts retorqued after last cooldown ?
 
5 motors between us.
my first one did the same thing as this one, full detonation. the motor i have now, was a fully running motor from a low hour 03 blaster

when i took it to creek cycles. i had tested for leaks and comp. then i had it jetted, tuned at creek cycles.

my buddys 1st motor went lean and ate the rings from temp drop and no jet change so did the new motor he got due to lean jetting. so he had the top end done at creek cycles. his motor blew 1 ride after break in. never even went over 3/4 throttle.

needless to say but i WONT be going back to creekcycles, obviously he has no idea what hes doing with 2 strokes or testing/tuning them.

Something is wrong here.

A builder should be not blamed for the problems you have experienced with you motor.

A builder tunes your bike, and from reading some of your last posts, it is obvious that you are messing with the carb and fitting different jets.

You changed from a #330 main to a #370 main, why did you do this, maybe to cover up an air leak?

Is the float level correct?

Was the idle set properly?

Did the temp drop?

Did the elevation change?

What fuel are you using?

What oil are you using?

Were heat cycles and proper break in proceedure performed?

Did you bleed the oil line after fitting the new tank?

Are you using a B8ES plug?

The list goes on.

Even a motor built by the reputable KOR can fail, if wrong things are done to it.
 
Something is wrong here.

A builder should be not blamed for the problems you have experienced with you motor.

A builder tunes your bike, and from reading some of your last posts, it is obvious that you are messing with the carb and fitting different jets.

You changed from a #330 main to a #370 main, why did you do this, maybe to cover up an air leak?

Is the float level correct?

Was the idle set properly?

Did the temp drop?

Did the elevation change?

What fuel are you using?

What oil are you using?

Were heat cycles and proper break in proceedure performed?

Did you bleed the oil line after fitting the new tank?

Are you using a B8ES plug?

The list goes on.

Even a motor built by the reputable KOR can fail, if wrong things are done to it.
he didnt build anything, it was a perfect running motor when i took it to him.

there may have been a 3-5 degree diff in outdoor temp, elevation was the same, same fuel, same plug, yamalube was used.

i didnt do any work to it, i had it all done at creek cycles, they did ALL the jetting and tuning, oil delivery, start up. i took him a good running motor that tested fine.
i havent messed with it, or adjusted anything since i got it back from them... so im pretty sure it was nothing i did. all i did was ride it 4 time for 20-30 mins, not hard either i had it throttle stopped at 90% throttle, so wouldnt get revved out.
 
i understood all that from your previous posts, although i thought i remember mentioning that the 370 jet was too big for your mods, and possibly masking an airleak, i was under the assumption you rejetted it to the 370 ??
if in fact this was given back to you from creek cycles as you rode it, and prejetted by them,
i'd say they are to blame, and owe you a rebuild
 
^exactly, i didnt change anything. im thinking he owes me a rebuild too or at least the labor ill pay for parts. but i doubt he'll do anything about it, prob just tell me to get lost....we'll see i guess it doesnt hurt to ask.

i had them jet it and they went from a 230 that was in the carb to a 330 and he said it was still too small, so he ordered up to 500. he ended up at a 370 in the end. he did the a/f ratio and idle on it as well.
hes the one who leak/comp tested it when i got the motor, and said it passed 100% no leaks. i picked up the motor and put it in the bike. i took the bike, carb, pipe, oil tank&lines to him the next day and he assembled it all. then proceeded to fill with oil, prime, start, jet, tune the motor.

ended up with a $300 bill for jets/labor, including leakdown and comp test.
and thats on top of the $425 i paid for the motor when i bought it.
 
Please accept my apoligies for assuming that you had done the work on your motor.

The posts sugguest that you had done the work.

I hang my head in shame at what I posted, I mis read your explanations.
 
^dont worry about it, lol. im just kind of disappointed by this whole thing. ive had horrible luck with these blasters, and it makes me so mad because they are a great lil quad. light, easy to manuver, quick. hopefully paul will stand by his work and at least cover the labor for a rebuild.
ive honestly been contemplating ditching the blaster motor and going to a 500cc suzuki twin cylinder 4-stroke, i found one for a good price. 500 still in the bike, runs and rides good, the guy just got a decked out goldwing. thats why hes selling it. or if i feel like doing some fab and frame design, i could just go balls out with a 600cc 4cyl.
 
well he doesnt want to do anything about the engine other than a leak down. basically said its my problem. i should have just assembled, jetted and tuned my self and saved 300. and still had it blow up.

i cant figure out why my engines keep detonating, i cant find any leaks. the only place i think it could be leaking is the carb or something f'd up in the pipe.
i dont want to spend 300 to redo the topend for it to blow up again after 4 rides. so i think im done with blaster engines. so now im looking for a 300cc or bigger 4 stroke, chain drive engine. preferably 2 or 4 cylinder.
 
ya, what you wanna give for it? the bottom end should be fine, no leaks on the leakdown. i would have the rod bearing inspected before using the crank/rod. just incase a piece of piston or ring made it down there some how.
 
gota sell some stuff to help pay for shipping a sportbike here.

sand paddle tires and rims.
set of ams sidewinders:18 tall x 9.5 wide x 8 rim. on 8x9.5 twin bolt pattern rims 4x130+4x110 rims.
practically new, rode once. less than 10 miles on them.

check ebay, no reserve-low buy in. search: sand paddle tires and rims



stock carb, rebuilt 2 weeks ago. 370 main, stock pilot, tuned for 110 race fuel. great shape, clean.
$60 obo
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stock airbox with maxima 2 stage profilter. filter is 2 weeks old, clean in good condition, comes with intake and lid.
$15 firm

2001 white rear fenders/no air box, good condition no bends or cracks. scratches from trails
$30 obo
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2001 white front fenders, good condition no bends or cracks. scratches from trails
$40 firm
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showa rear shock-4 way adjustable preload strut with rezzy/coilover adjustable height spring. good charge, no leaks.
$50 firm
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38mm k&n race filter. slightly used, still oiled.
$15 obo
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2008 oakley O frames with lens, no strap.
$15 firm
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2003 stock 200cc motor. stock bore. needs topend rebuild, good bottom end. shifted smooth, newer clutch. comes with reeds/cage/carb boot. no cracks, no leaks, good condition. 2001 stator.
$100 obo
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2003 stator, perfect condition, no decline in volts, looks new.
$50 firm
 
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