does is sound right ?
- Thread starter joser1993
- Start date
hmmmm.. no dont sound right...
PICT0264.flv video by 4cfed88 - Photobucket
mine always sounded like that.. blasters have a distinct motor sound BUT it souns like something extra is spinning with your motor
PICT0264.flv video by 4cfed88 - Photobucket
mine always sounded like that.. blasters have a distinct motor sound BUT it souns like something extra is spinning with your motor
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Hmmm. You've got a rather noticable knock in the lower end. It is probably the rod's big end bearing, as knock occurrs 'in time' with the firing of the plug. The engine is also running lean, especially at idle. Notice how quickly it revs and 'clears out' after hitting the throttle. This is one sign of a lean main jet, too. Did you do a full, split-the-case rebuild on the engine? Or just a new top end? Regardless, that carbuetor needs tuning in a hurry...
It sounds to me like the engine has a rod knock. It will probably continue to run like this for some time, once the carburetor has been tuned properly. However, I'd at least pull the top end off again and check out the rod. I had a '92 Blaster that sounded like this, and it's crank was in need of a rebuild. If the bike had a blown engine, it is very possible that at least one bearing in the bottom end has been damaged by lack of proper lube. You can either fix it now and know that the engine will last, or keep on running the engine like it is and hope for the best. Sometimes you get lucky. Other times, not so much. Thrown rods make one Hell of a mess when they happen...
^^Agreed^^ That's what I'd do, too. Might want to look around for a new crank, if you really like this Blasty. You already know that you have a new top end, and you'd be surprised at how cheap a replacement crank can be. Try Ebay. If you bought another Blaster later on, you're getting into a whole new set of unknown problems. Most of the work involved in replacing a crank is labor anyways, not parts...
I think it sounds more like piston slap than a rod problem. Roller bearing rods don't knock like journal bearing rods do. Not for long anyway...
if you can, pull the head off and turn the motor over by hand( using the kicker with the ignition off) as see if the rings are nickin the ports, or if you can see any visual play in it..
if its lower end, you have a good excuse for a 3 mill
if its lower end, you have a good excuse for a 3 mill
Piston slap is from a piston that is too loose in the bore, and wobbles as a result, causing excess noise and stress on the piston skirt. If run that way, you can break a skirt, which will ruin your whole day quickly.
well i rode the sh*t out of it today and ran great wat i remember is the copper gasketis a little tinny than the 68mm bore
the good thing is that it didnt make much noise any more and it runs great against a 400 ex and beat it at throttle response so one question
my friends trx400 (2003) was going on fifth gear and then turned off and couldnt get it to start the lights wernt on the startor nothing so any help please it turns pulling it now
the good thing is that it didnt make much noise any more and it runs great against a 400 ex and beat it at throttle response so one question
my friends trx400 (2003) was going on fifth gear and then turned off and couldnt get it to start the lights wernt on the startor nothing so any help please it turns pulling it now
