Do dents in a 2 stroke pipe hurt preformance?

fatcat · 08-20-2007, 10:35 PM

Well do they? My pipe has several dents in it i was wondering if this will matter enough to do any thing about it.

wr250f95 · 08-20-2007, 10:59 PM

fill it with water and frezze it, repeat until all the dents are out.

tigmaster · 08-21-2007, 05:29 AM

that is a super good trick, but if u have large dents that freezing doesnt help with u can always do it one of the same ways they do cars and weld studs to the dent. use some suitable slide hammer-ish item to pull them out. even in clymers manuals it will actually tell you to cut the section out if it is too big and hammer back to shape and re-weld. just depends on wat kind of expansion chamber u have too. stainless steel makes your job easy and u can make it look like nothing was ever welded to it, or if u have a lesser quality chrome plated pipe, it will start to rust where it was welded so treat it like u would a bare metal expansion chamber and keep it oiled. as far es dents hurting performance, they theoretically do if u did the math, but u cannnot usually notice it unless it was in a key area like the neck or tail end of the pipe. i would suggest just trying the freezing method and if that doesnt work dont worry about it too much.

fatcat · 08-21-2007, 05:59 AM

Ive hered of people bursting the seams using the freezing method. should i post pics ? it is a pro circuit platinum pipe.

tigmaster · 08-21-2007, 04:41 PM

um, its kinda tricky to burst seems in a piece of metal. ya u can post pics if u want.

fatcat · 08-21-2007, 08:09 PM

well i mean the welds but what ever ill try it tonight and see what happens

tigmaster · 08-21-2007, 08:19 PM

no, a good quality pipe will not exhibit these problems. it takes an excessive amount of pressure to burst a weld, they are stronger than the steel itself. ice does produce a fair amount of pressure but, usually it is not even enough to push out dents. try to find a way of capping off the ends securely if the dents are fairly large.

fatcat · 08-21-2007, 08:48 PM

i stuffed a rag in the big end and duct taped a plastic bag over it. the other i put a coke bottle cap over it and taped it to. i couldent find anything elese maybe it will work.

tigmaster · 08-21-2007, 09:19 PM

ya, the ice will expand it, but the ice should get wedged in the chamber and expand in there.

fatcat · 08-21-2007, 10:05 PM

waiting for it to thaw out will suck tho

08-20-2007, 10:35 PM	#1 (permalink)
fatcat C Rider Join Date: Aug 2007 Posts: 61 iTrader: (0)	Do dents in a 2 stroke pipe hurt preformance? Well do they? My pipe has several dents in it i was wondering if this will matter enough to do any thing about it.

08-20-2007, 10:59 PM	#2 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,841 iTrader: (1)	fill it with water and frezze it, repeat until all the dents are out. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-21-2007, 05:29 AM	#3 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	that is a super good trick, but if u have large dents that freezing doesnt help with u can always do it one of the same ways they do cars and weld studs to the dent. use some suitable slide hammer-ish item to pull them out. even in clymers manuals it will actually tell you to cut the section out if it is too big and hammer back to shape and re-weld. just depends on wat kind of expansion chamber u have too. stainless steel makes your job easy and u can make it look like nothing was ever welded to it, or if u have a lesser quality chrome plated pipe, it will start to rust where it was welded so treat it like u would a bare metal expansion chamber and keep it oiled. as far es dents hurting performance, they theoretically do if u did the math, but u cannnot usually notice it unless it was in a key area like the neck or tail end of the pipe. i would suggest just trying the freezing method and if that doesnt work dont worry about it too much. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-21-2007, 04:41 PM	#5 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	um, its kinda tricky to burst seems in a piece of metal. ya u can post pics if u want. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-21-2007, 08:19 PM	#7 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	no, a good quality pipe will not exhibit these problems. it takes an excessive amount of pressure to burst a weld, they are stronger than the steel itself. ice does produce a fair amount of pressure but, usually it is not even enough to push out dents. try to find a way of capping off the ends securely if the dents are fairly large. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-21-2007, 05:59 AM	#4 (permalink)
fatcat C Rider Join Date: Aug 2007 Posts: 61 iTrader: (0)	Ive hered of people bursting the seams using the freezing method. should i post pics ? it is a pro circuit platinum pipe.

08-21-2007, 08:09 PM	#6 (permalink)
fatcat C Rider Join Date: Aug 2007 Posts: 61 iTrader: (0)	well i mean the welds but what ever ill try it tonight and see what happens

08-21-2007, 08:48 PM	#8 (permalink)
fatcat C Rider Join Date: Aug 2007 Posts: 61 iTrader: (0)	i stuffed a rag in the big end and duct taped a plastic bag over it. the other i put a coke bottle cap over it and taped it to. i couldent find anything elese maybe it will work.

08-21-2007, 09:19 PM	#9 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	ya, the ice will expand it, but the ice should get wedged in the chamber and expand in there. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-21-2007, 10:05 PM	#10 (permalink)
fatcat C Rider Join Date: Aug 2007 Posts: 61 iTrader: (0)	waiting for it to thaw out will suck tho

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