Topic: slip ons

[rappz7]

I think ive decided to chop off the end of my stock mufflers (the previous owner already did the other one) and just putting on some slip ons. The stock headers are in really good shape plus most aftermarket exhaust for a 79 cb650 are either made with crap metal or just way to expensive to justify on this build. My pipes measure (with a pair of digital calipers) 1.68 inches outside diameter and 1.58 inches inside diameter. With a tape measure it reads roughly around 1 and 9/16 inches. I found some shorty emgos that say they can fit 1 1/2 inch and 1 3/4. Does this mean only these sizes will fit these pipes with the included reducers or will in between sizes fit? All input is greatly appreciated , thanks.

[flybox1]

you will need the pipe with the next larger ID than your pipes OD, and use spacers and a HD clamp to seal it properly.
please also check out these
http://www.coneeng.com/motorcycle_components.html

[rappz7]

you will need the pipe with the next larger ID than your pipes OD, and use spacers and a HD clamp to seal it properly.
please also check out these
http://www.coneeng.com/motorcycle_components.html

thanks for the response. I took a look at the link but these look pretty expensive still. Most of them end up being around 250 for two slip ons. I found the emgos for 60 for the pair. I know you get what you pay for but they look nice enough and will get my bike going. Im not to worried about the quality of the slip on because from my experience its not the muffler end that rusts and rots though but the headers. I just want to be sure that if i order these they will seat nicely and not leak. 16th of an inch doesnt sound like a lot but trying to clamp the steel until it gets close enough to the headers seems tough. I could be wrong though ive never used slips ons and maybe that metal around the inlet is flexible to the point where it grabs the headers and stays put.

[HondaMan]

you will need the pipe with the next larger ID than your pipes OD, and use spacers and a HD clamp to seal it properly.
please also check out these
http://www.coneeng.com/motorcycle_components.html

thanks for the response. I took a look at the link but these look pretty expensive still. Most of them end up being around 250 for two slip ons. I found the emgos for 60 for the pair. I know you get what you pay for but they look nice enough and will get my bike going. Im not to worried about the quality of the slip on because from my experience its not the muffler end that rusts and rots though but the headers. I just want to be sure that if i order these they will seat nicely and not leak. 16th of an inch doesnt sound like a lot but trying to clamp the steel until it gets close enough to the headers seems tough. I could be wrong though ive never used slips ons and maybe that metal around the inlet is flexible to the point where it grabs the headers and stays put.

If you think the old pipes were crap, wait until you get some EMGO pipes...

[rappz7]

you will need the pipe with the next larger ID than your pipes OD, and use spacers and a HD clamp to seal it properly.
please also check out these
http://www.coneeng.com/motorcycle_components.html

thanks for the response. I took a look at the link but these look pretty expensive still. Most of them end up being around 250 for two slip ons. I found the emgos for 60 for the pair. I know you get what you pay for but they look nice enough and will get my bike going. Im not to worried about the quality of the slip on because from my experience its not the muffler end that rusts and rots though but the headers. I just want to be sure that if i order these they will seat nicely and not leak. 16th of an inch doesnt sound like a lot but trying to clamp the steel until it gets close enough to the headers seems tough. I could be wrong though ive never used slips ons and maybe that metal around the inlet is flexible to the point where it grabs the headers and stays put.

If you think the old pipes were crap, wait until you get some EMGO pipes...

I thought the old pipes were great. better quality than most systems out now. I have a pair of 81 exhausts but they're rusty and a little worse for wears and the stock set was chopped on one pair. I just need a solution that wont be as much as buying a new mac system or what have you. I'm open to suggestions but i haven't had much luck finding one myself and ive been working on this bike for almost two years.

[HondaMan]

Lately, some riders here have been getting [some sort of muffler that fits] for these bikes, then had them replated. While not cheap, it lasts a lot longer.

...it sure seems like a great business opportunity: any type of 4-2 or 4-4 pipes that would fit these (and many other Fours out there from the 1970-1990 era) would sell well.

 

[rappz7]

Lately, some riders here have been getting [some sort of muffler that fits] for these bikes, then had them replated. While not cheap, it lasts a lot longer.

...it sure seems like a great business opportunity: any type of 4-2 or 4-4 pipes that would fit these (and many other Fours out there from the 1970-1990 era) would sell well.

 

Unfortunately Im not willing to spend that kind of money. To buy an exhaust system and replate it is just to much. Any recommendations for a slip on that wont break the bank and wont fall to pices in a year? I figure I have a pair of near perfect headers and I might as well use them.

[seanbarney41]

I have used Emgo slip-ons before on a cb350 twin.  They looked fine and lasted for years on two different bikes, and generally sounded better than a MAC.  I see no reason for them not to still be in fine shape.  They still looked as new when I sold the bike about 8 years ago.  Those pipe size adapters they come with suck though, and require some quite creative re-engineering to not leak.

It is very uncommon for any headers to rust to the point of being non-functional.  Look like crap?  yes  `Holes that cause non-functionality? no

[rappz7]

I have used Emgo slip-ons before on a cb350 twin.  They looked fine and lasted for years on two different bikes, and generally sounded better than a MAC.  I see no reason for them not to still be in fine shape.  They still looked as new when I sold the bike about 8 years ago.  Those pipe size adapters they come with suck though, and require some quite creative re-engineering to not leak.

It is very uncommon for any headers to rust to the point of being non-functional.  Look like crap?  yes  `Holes that cause non-functionality? no

Really? Thats good to hear. Thanks for your input, I appreciate it.

[Garage_guy_chris]

I have found old take-off stock Harley Davidson mufflers are cheap, plentiful, well constructed and are fairly quiet but can be made louder.

I used a set of mid 90's Dyna FXD mufflers (with the Gronk MOD) on my CB450 and they are working out quite nice. they are like this

http://www.ebay.com/itm/Harley-2008-10-FXD-Dyna-OEM-Tapered-Mufflers-Heat-Shields-/381566399398?hash=item58d72133a6:g:f~oAAOSwKtVWzGaH&vxp=mtr


The only other thing that comes to mind but maybe too expensive is the Ripple Rock Racer 650 exhaust. But i think its likely more expensive then you want to spend. they are $699 Canadian so $525 USD anyways just incase

http://www.ripplerockracers.com/product/honda-cb650-hindle-stainless-steel-exhaust-fits-1979-82/

[evanphi]

Spend the money and get a good quality product that you won't have to replace in a few years.

Flybox got it right. Go Cone Engineering. http://www.coneeng.com/motorcycle_components.html

A pair of open core reverse cones will only run you around 200$USD. Small price to pay for good quality. Just be happy you don't have to pay exchange rates...

[rappz7]

I have found old take-off stock Harley Davidson mufflers are cheap, plentiful, well constructed and are fairly quiet but can be made louder.

I used a set of mid 90's Dyna FXD mufflers (with the Gronk MOD) on my CB450 and they are working out quite nice. they are like this

http://www.ebay.com/itm/Harley-2008-10-FXD-Dyna-OEM-Tapered-Mufflers-Heat-Shields-/381566399398?hash=item58d72133a6:g:f~oAAOSwKtVWzGaH&vxp=mtr


The only other thing that comes to mind but maybe too expensive is the Ripple Rock Racer 650 exhaust. But i think its likely more expensive then you want to spend. they are $699 Canadian so $525 USD anyways just incase

http://www.ripplerockracers.com/product/honda-cb650-hindle-stainless-steel-exhaust-fits-1979-82/

I was curious about using mufflers from other bikes. I imagine the cb450s pipe diameter is similar to the 650? It's about 1 and a half inches give or take a 16th of an inch. What is the Gronk MOD?