My Manco 265cc has a metal box that surrounds the exhaust pipe,this box is about 4 inches wide on each end and about 5 inches on the sides and the pipe goes through the middle of the box and is welded where it starts to enter.This engine is very quiet even at high speed and I feel this box is reason why,I also think this robs my engine of power.I would your opinion as to what you think.This is a Japanese Robin/Subaru engine.Is this like a catalitic converter?I think the EPA may have required this for use in the USA and many other countries standards.What do you think? mancoman
Post some pictures of it... That would help out a lot. _________________ Chris Dierkens
'04 Yerf-Dog 3206 10g Rollers, 1500# Spring, Reverse, SuperTrapp, Uni
'04 KPX Xterro: pumper carb, oil cooling, 10g rollers, Junkies pipe, Uni
'05 Blade 150 DX: 4 Valve head, 10g rollers, East Side pipe, Uni
www.northeastbuggy.com
Just because an exhaust is 'quite' does not mean it is robbing your engine of power it just means it is a good quite exhaust, in fact most so called 'sports' exhaust are poorly designed and often are adapted from another engine completly, bad back pressure, incorrect leangth and or diameter could just cost you fuel and power, it just 'sounds' more powerful, and gets on everyones tits! Some 10% of engine design cost goes into the exhaust system, leave it alone as I have yet to find any system on any engine that benifits from an silencer change without the whole intake and port system needed work too. Check out my VW 1642 stage 3, talk about one thing leading to another to get it all working correctly!
www.ukhozi.page.tl
Peter _________________ There is no such thing as "just a car".
Just because an exhaust is 'quite' does not mean it is robbing your engine of power it just means it is a good quite exhaust, in fact most so called 'sports' exhaust are poorly designed and often are adapted from another engine completly, bad back pressure, incorrect leangth and or diameter could just cost you fuel and power, it just 'sounds' more powerful, and gets on everyones tits! Some 10% of engine design cost goes into the exhaust system, leave it alone as I have yet to find any system on any engine that benifits from an silencer change without the whole intake and port system needed work too. Check out my VW 1642 stage 3, talk about one thing leading to another to get it all working correctly!
www.ukhozi.page.tl
Peter _________________ There is no such thing as "just a car".
Just because an exhaust is 'quite' does not mean it is robbing your engine of power it just means it is a good quite exhaust, in fact most so called 'sports' exhaust are poorly designed and often are adapted from another engine completly, bad back pressure, incorrect leangth and or diameter could just cost you fuel and power, it just 'sounds' more powerful, and gets on everyones tits! Some 10% of engine design cost goes into the exhaust system, leave it alone as I have yet to find any system on any engine that benifits from an silencer change without the whole intake and port system needed work too. Check out my VW 1642 stage 3, talk about one thing leading to another to get it all working correctly!
www.ukhozi.page.tl
Peter
That's a nice looking car...
I wish I had the time to work on something like that.
You're right about the exhaust... If you don't do the intake and re-jet it's probably not worth it. _________________ Chris Dierkens
'04 Yerf-Dog 3206 10g Rollers, 1500# Spring, Reverse, SuperTrapp, Uni
'04 KPX Xterro: pumper carb, oil cooling, 10g rollers, Junkies pipe, Uni
'05 Blade 150 DX: 4 Valve head, 10g rollers, East Side pipe, Uni
www.northeastbuggy.com
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