Any of you guys know for sure that a Pro Circuit slip on will work with the stock black fatty? All my past Blasters had FMF pipes on them, I know they will work but just wanta try something different. Thanks.
Pro Circuit Slip-on,...
- Thread starter Sickspeed
- Start date
The stock Blaster header is designed to work with a restrictive silencer and may require a jetting adjustment!
Yes it should fit but the #230 stock main jet may need changing due to the difference in back pressure from the silencer.
A plug chop will confirm.
When I first got my Blaster I removed the stock silencer and the motor pulled stronger but the plug chop reported a lean mix.
A plug chop will confirm.
When I first got my Blaster I removed the stock silencer and the motor pulled stronger but the plug chop reported a lean mix.
Cool, well I opened up my fuel transfer ports on the cylinder last night so I know that will richin it up, man you wanta talk about some nasty factory castings, worst I've seen on any of my Blasters, I removed a bunch of material. When I have done this in the past I had to lean out my needle clip position. Ordering a Wiseco piston for it today.
I ordered me a Pro Circuit slip on and went ahead and ordered a 260 main jet as well. I ordered the Wiseco Piston yesterday so hopefully have it all in by the coming weekend.
Not sure of your current warm up procedure but the wiseco piston is forged which requires the engine to be warmed up before riding to allow the piston to expand ... Not doing so can and will result in a shattered piston/skirt ! Good choice going with wiseco ( in my opinion ) this is my second summer running my wiseco prolite piston and I havnt had any problems ... Enjoy your new parts man !
Thanks, no doubt, Wiseco in my opinion is best in a two stroke, this will be the 5th Blaster ive put one in and ive also put them in a little more then half dozen dirt bikes. I always go with the jug being good and warm to the touch before I ride, i'm old school.
Can't wait to get everything in, gonna be riding next weekend!!I:I
Can't wait to get everything in, gonna be riding next weekend!!I:II've never heard of a piston skirt shattering on a Wiseco, curious to know where did you hear that? That sounds to me more like a machining discrepancy by the shop who bored someones cylinder incorrectly. Normally in a cylinder, when you first start it up, a cast piston will swell quite a bit in the cylinder, more so and quicker then the cylinder itself because its smaller and heats up quicker. With a forged piston, it will only swell about 1/5th as much as a cast piston due to the extreme process the forged piston is made under, making it far less likely to shatter a skirt then any piston that is not forged, simply because it is more forgiving on tolerances. That also amounts to quicker, free'er rev's and due to Wiseco's piston design also makes tighter compression.
My neighbors blaster shattered a wiseco piston. This was not because of poor warm up procedure. It was because off excessive piston to cylinder clearance.
I feel that you should do a little more research as to cast versus forged pistons as there are sure some things that you do not understand.
Hmm, interesting, do explain,... At one time Forged pistons were heavier and a little less quality then cast but as of late the Forged is a much stronger and longer lasting piston used in predominately high performance engines of all kinds.
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I am happy to enlighten you on one point which should excite you into finding out the truth about the cast vs forged debate.
Forged pistons are dimensionally unstable and expand more than cast pistons and require greater tolerances.
Any piston can break a skirt given the right conditions.... No brand is unbreakable. There is very little difference between most brands anymore.
I know once you heat cycle a Forged piston several times through a proper break in it moves a bit to form the grain and shape it will forever have but I thought after that meant less expansion in the cylinder?
The pin bosses in a forged piston are their major concern, these are the areas of major expansion which can cause problems to the inexperienced user.
The uneven expansion rate can cause the piston to scuff the bore and leave traces of piston on the cylinder wall, this then makes the piston smaller and prone to piston slap, the killer of skirts.
