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mods now no top end
Posted: Sun Apr 08, 2007 7:31 pm
by windycity85
hey guys,
I did a few mods, but i dont know if they are supposed to reduce top end. I know the pulley mod does but heres what i did:
Shaved head .020
Ported intake/exhaust
gutted muffler
new rings
elite shock
thats pretty much it and it gained mad torque and runs fine, but it tops out at like 28 whereas before i could get to 33-35. It MIGHT be running a little lean, but it was running a little rich before.
I dont know tooooo much about tuning. so i dont know if it lost top end because it is running too lean? but i didnt think that could be the case.
1986 spree
Posted: Sun Apr 08, 2007 8:28 pm
by MySpree
the pulley mod should increase top end, it speeds it up. you need to tune it, that aint right.
Posted: Sun Apr 08, 2007 8:30 pm
by windycity85
yea. i would like to do the top end pulley mod eventually. still, like you said, this isnt right, haha.
Posted: Mon Apr 09, 2007 3:26 am
by hrnytrtlsgsxr
could also depend on how you ported your exhaust that gave it torque and not top end.
Posted: Mon Apr 09, 2007 11:09 am
by windycity85
hmm, is there any way I can get that top end back without doing the pulley mod?
Posted: Thu Apr 12, 2007 7:57 pm
by noiseguy
Two questions:
1) What, exactly, does that "gutted exhaust" look like?
2) Did you vertically enlarge the exhaust port at the piston? Or did you just clean up the inside a bit? And did you touch the cylinder intake ports as well?
I would be tempted to shave the pulley as well to see if that evens out your performance.
Posted: Thu Apr 12, 2007 9:58 pm
by MySpree
i have a couple exausts with enlarged ports, and i always port my exaust and inake fins.
Posted: Fri Apr 13, 2007 2:31 am
by windycity85
everything seems to be working out. I opened it up a few times and now it finds its way to 34 real easily.
no more problems!
thanks guys!
Posted: Fri Apr 13, 2007 9:34 pm
by noiseguy
MySpree wrote:i have a couple exausts with enlarged ports, and i always port my exaust and inake fins.
English please? What exactly are exhaust and intake fins?
Posted: Fri Apr 13, 2007 9:38 pm
by MySpree
i call the fins at the bottom of the carb intake fins..
when i was in hawaii i was tought how to port from this guy from a place called quickfix. and now i port my intake fins adn widen my exaust port.
Posted: Wed Apr 18, 2007 9:55 pm
by DELETED
DELETED
Posted: Thu Apr 19, 2007 3:36 pm
by MySpree
what BS? # 1 thats were i get my parts, #2 one of the people i was with that brought me there new the guy.
Posted: Tue Apr 24, 2007 8:47 pm
by PimpinSpree
did you rejet the carb?
Posted: Tue Apr 24, 2007 9:29 pm
by MySpree
Me? yes.
Posted: Wed Apr 25, 2007 6:03 pm
by KZ250andSpree
speedkills wrote:myspree cut the B.S. people are getting tired of it!
What "B.S."? That he ports his exhaust and intake ports? And what people?