custom exhaust

[Holfy]

would a hotter plug really make that big of a difference though my motocross bike i tryed every plug it never made any difference

[rs250lape]

no you dont wanta hotter plug it will melt and cause chaos in side your motor .. when you ride it atr high rpms it will get to hot and melt

[chrism15]

yep it will melt and leave a metal blob on your piston

[Holfy]

yep it will melt and leave a metal blob on your piston

so just a change of main jet then

[chrism15]

yerr just jet accordingly

[Holfy]

ok is it a 5mm jet in the standard carb or 6mm ?

[chrism15]

sha 1412 carb? i THINK 5mm

[Holfy]

no it's a phbn 12mm but it already has 74 main jet in it so just gunna try that arrow exhaust for a bit then check the plug colour after a few rides

[chrism15]

no it's a phbn 12mm but it already has 74 main jet in it so just gunna try that arrow exhaust for a bit then check the plug colour after a few rides

ah you"v got the GOOD carb then not sure about thread size then, and check the spark plug colour after first ride and give it a good scream- dont want it to be really lean and blow a piston

[Holfy]

yeah don't worry my bike is always on the main jet aha but i checked plug colour today and it's perfect coffee colour and yeah will give it a check after first right

[camb00]

phbn is 6mm

[Holfy]

phbn is 6mm

ok thanks ever so much mate

[Holfy]

[QUOTE=camb00;3142940]phbn is 6mm[/QUOTE

http://www.ebay.co.uk/itm/Aprilia-RS...ht_2631wt_1397
i don't want to say your wrong but in the description for this item it say the rs50 is a 5mm m5 thread this is probably a load of shit though. So going by your word this jet will fit my carb then

[nicketynoo]

Definitely 6mm jets on a PHBN carb! Like chris said ths SHA carb has 5mm jets!

[Glen1990]

right i had never fitted the exhaust so i thought ill fit it today and check it fits ok and stuff cause the front pipe bit that slides in the engine was off a an arrow racing exhaust (my old one that messed up) so im glad i checked it cause it needed cutting out and stuff so i got the ginder and table grinder out and got it to fit so i thought ill take some photos lol








heres a photo of comparing the arrow racing and arrow street






Last ones are just my bike lol shame about the marks