mods now no top end

windycity85 · Post by **windycity85** » Sun Apr 08, 2007 7:31 pm

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

MySpree · Post by **MySpree** » Sun Apr 08, 2007 8:28 pm

the pulley mod should increase top end, it speeds it up. you need to tune it, that aint right.

windycity85 · Post by **windycity85** » Sun Apr 08, 2007 8:30 pm

yea. i would like to do the top end pulley mod eventually. still, like you said, this isnt right, haha.

hrnytrtlsgsxr · Post by **hrnytrtlsgsxr** » Mon Apr 09, 2007 3:26 am

could also depend on how you ported your exhaust that gave it torque and not top end.

windycity85 · Post by **windycity85** » Mon Apr 09, 2007 11:09 am

hmm, is there any way I can get that top end back without doing the pulley mod?

Post by **noiseguy** » Thu Apr 12, 2007 7:57 pm

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.

MySpree · Post by **MySpree** » Thu Apr 12, 2007 9:58 pm

i have a couple exausts with enlarged ports, and i always port my exaust and inake fins.

windycity85 · Post by **windycity85** » Fri Apr 13, 2007 2:31 am

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!

Post by **noiseguy** » Fri Apr 13, 2007 9:34 pm

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?

MySpree · Post by **MySpree** » Fri Apr 13, 2007 9:38 pm

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.

DELETED · Post by **DELETED** » Wed Apr 18, 2007 9:55 pm

DELETED

MySpree · Post by **MySpree** » Thu Apr 19, 2007 3:36 pm

what BS? # 1 thats were i get my parts, #2 one of the people i was with that brought me there new the guy.

PimpinSpree · Post by **PimpinSpree** » Tue Apr 24, 2007 8:47 pm

did you rejet the carb?

MySpree · Post by **MySpree** » Tue Apr 24, 2007 9:29 pm

Me? yes.

KZ250andSpree · Post by **KZ250andSpree** » Wed Apr 25, 2007 6:03 pm

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?