Out in a field Build ... XS 500 The Sock Monkey ( Finished pics ,video, )
- Thread starter DreadRock
- Start date
I did a test fit with ever thing from mounts to filters. So far I'm really happy with the fit and finish,much better then stock stuff. As in the post on xs500 forum my ports a novel and new boots are round . when mounted there is (maybe) 1/8 inch of lip on top and bottom. Its not a race bike so I think I'm going to leave them alone for now and once I get messing with tuning again see if it make a diff. I can see it could cause air flow to not be perfect so if that seems to be the case I'll pull them off and take off the edges ! Will see I guess and ill get some pics up . If anyone sees a problem with not smoothing out the ports and why please let me know !
Been a min or two ( life ) but messing with the monkeys after a few nice days here in Ohio. I left the monkey out of pulling my hair out over a few things . But I'm back on it and hope to once and for all get the carbs right. I did regear it to ..... Front : 15 Back : 37 . Was looking over on XS500 forum and came across a member the did some dyno test for the vm32 carbs . My set up is close but for the needle jet and jet needle.
Mine : needle jet ... 159 p-6
Jet needle .... 6DP17
Need : needle jet .....159 p-5
Jet needle....6DH7
Can't seem to find any ? Any help out there ? Not 100% on numbers on my part try to find them to see if # match up with what I'm reading.Only diff from mine is the 2 into 1 pipes
http://www.xs500forum.com/index.php?topic=1625.msg9139#msg9139
Mine : needle jet ... 159 p-6
Jet needle .... 6DP17
Need : needle jet .....159 p-5
Jet needle....6DH7
Can't seem to find any ? Any help out there ? Not 100% on numbers on my part try to find them to see if # match up with what I'm reading.Only diff from mine is the 2 into 1 pipes
http://www.xs500forum.com/index.php?topic=1625.msg9139#msg9139
brad black
Been Around the Block
whether or not it's a race bike is irrelevant. there's no reason to leave obvious crap like that.
The Limey
Evil English Villain
The surface finish isn't critical on the intake side. The rough surface will actually help creating turbulence and a properly mixed charge. You want it nice and smooth on the way out though.
The reason that polished ports are not advantageous from a flow standpoint is that at the interface between the metal wall and the air, the air speed is zero. This is due to the wetting action of the air and indeed all fluids. The first layer of molecules adheres to the wall and does not move significantly. The rest of the flow field must shear past, which develops a velocity profile (or gradient) across the duct. For surface roughness to impact flow appreciably, the high spots must be high enough to protrude into the faster moving air toward the centre. Only a very rough surface does this.
The finish on our heroes intake wouldn't worry me in the slightest.
The reason that polished ports are not advantageous from a flow standpoint is that at the interface between the metal wall and the air, the air speed is zero. This is due to the wetting action of the air and indeed all fluids. The first layer of molecules adheres to the wall and does not move significantly. The rest of the flow field must shear past, which develops a velocity profile (or gradient) across the duct. For surface roughness to impact flow appreciably, the high spots must be high enough to protrude into the faster moving air toward the centre. Only a very rough surface does this.
The finish on our heroes intake wouldn't worry me in the slightest.
brad black
Been Around the Block
to clarify, i was talking about the mismatch top and bottom. as limey says, smooth is bad.
two-smoker
I reject your reality, and substitute my own!
I believe he's more worried about the difference in port shape between the head and the manifolds than the "finish" of the ports. If it was me, I'd bust out the dremel and match those ports. That sharp transition can't be good.
Sent from my Alcatel_6055U using DO THE TON mobile app
Sent from my Alcatel_6055U using DO THE TON mobile app
brad black
Been Around the Block
agreed
two-smoker
I reject your reality, and substitute my own!
Got jets in and throttle is so much better .. smooth no bogging ! Problem im having is, it wont idle just dies when you let off throttle even with idle screws all the way in . And its really on the rich side ? So im going over a few things to see what im missing and will let you know how it goes ! Other then that it seems going back in right direction .
