A little q?? on gpx pipes

[xLOCOx]

hi there just wondering on gpx pipes are they any good? compared to a ****ty set of duelies?
its either that or carby dunno?
any suggestions/feedback would be sweet
cheers

 

[Blender]

what are you looking for? hp gains or just want a new exaust? from what i hear the gpx's arnt too bad. and what do you mean by pipe or carby? what bike do you have?

 

[my67xr]

the GPX exhaust might make it a touch quieter than the twin setup,
but the tone of it will make it sound better.

changing carbys would make a bigger difference, but you may need to rejet it to suit your bike
so carby will be a little more work.

 

[xLOCOx]

thanks craig..... and blender I've got an atomik 160 regin bigfoot, i men ill ether get the pipe or the carby....not as hp gain i would rather a new exhaust because the deulies dont sit that good on the bike

 

[Blender]

ohh i see, well then yeah, if your after a new exhaust, from what i hear gpx arnt too bad for the money, but you will probably have to tune your carb to suit it

 

[xLOCOx]

re jet? i hope i dont lol its a molkt carb which are ****
im thinking the idel screw hopefully

 

[Blender]

yeah, probably a re-jet, but play around with your air/fuel mixture screw and needle and you may be lucky enough to not need to bother with re-jetting.

 

[Blender]

abd the plus side is, if that doesnt work, an OKO can do wonders

 

[my67xr]

when i mentioned rejetting above,
i was thinking you were replacing the exhaust or maybe the carby.
a new carby may need rejetting.
you'd be best off putting a carby on, getting rid of the Molkt.
i reckon the gpx exhaust would flow about the same as you big bore dual sytem,
just the note will change.

 

[xLOCOx]

i may still get the gpx pipe because the ones ive dosent look that nice or sit nice on it so i may order one thanks craig and blender.... hey craig umm would i probably need to rejet? or just play with the air fuel mixture?

 

[my67xr]

the 2 exhausts should flow close on the same,
you might get away with adjusting the clip on the needle and some tweaking of the mixture screw.

 

[xLOCOx]

SWWEEEET i think i may try get a deal on it fingers crossed thanks again blender and craig

 

[xLOCOx]

hmmm.... i was just about to purchase it , BUT i noticed klx bent version is for either a crf50 or crf 70 frame??
but its a klx bend.... i know that the yx/zh/ho heads are based off the klx..... im god damn confused!!!
see here: New GPX XPower HP Exhaust System, KLX Bent
and i run a yx160 so klx head and frame???????????????????

 

[8r3nd0]

A simple rule of thumb that I got told a while back is that you can tell if your engine runs a crf or klx style exhaust port by the angle of the inlet.
If the inlet sits slightly angled to the barrel its a klx and if it's straight with the barrel it's crf.
Better yet post a picture of your bike and exhaust that's on it and we can tell you straight away what it is.

 

[xLOCOx]

hey man... ummm... yx's are a klx bend?? aren't they?... and i have a klx frame also.
but on the website it says klx bend which is a go ahead but my frame is a klx not a crf50/70
so im guessing they dont have one to suit me?

 

[8r3nd0]

Yx's come with both style ports some crf some klx my yx160 is a crf bend. Like I said throw a pic up mate I reckon we would be able to tell you by looking at it, I can compare it to mine and tell you if it's the same.

 

[xLOCOx]

oh ok thanks for that... i dont the have the bike with me atm but an online pic should be the same

 

[xLOCOx]

to me that inlet looks flat to the barrel... so klx???

 

[8r3nd0]

Hey mate I'm pretty sure it's a crf port, I think I may of stuff up and got it back to front in the first post, sorry lad.
Here's a link to the tech section at tbolt about port styles.
http://tboltusa.com/store/tech.php?pID=68/YX+150%2F160%2C+ZS+155+Head+types

 

[8r3nd0]

Try these guys they are awesome with service and shipping speed. Pretty much the same pipe but with port and frame options.
http://www.ooracing.com/store/index.php?act=viewProd&productId=4185