Author Topic: MPG - cb550 motogpwerks pipes  (Read 3611 times)

0 Members and 1 Guest are viewing this topic.

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
MPG - cb550 motogpwerks pipes
« on: March 05, 2014, 05:49:30 PM »
Seeing many if you have these pipes, curious to hear how much mpg you guys get in your 550 bikes, 750 bikes are also welcome. 

I get about 30mpg on my 550.
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,045
  • 1977 CB550F2
Re: MPG - cb550 motogpwerks pipes
« Reply #1 on: March 05, 2014, 05:56:17 PM »
Holy #$%* that's terrible. I don't think your exhaust is using 10+ MPG.


Ahhh, US gallons. I need to go away and do some conversions. Stop bloody changing stuff America.   :P
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
Re: MPG - cb550 motogpwerks pipes
« Reply #2 on: March 05, 2014, 05:57:33 PM »

Holy #$%* that's terrible. I don't think your exhaust is using 10+ MPG.

I didn't want to think that either but I have 110 main jets in the carbs...???
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline Stilltime

  • Hot Shot
  • ***
  • Posts: 353
  • Building my Dream
Re: MPG - cb550 motogpwerks pipes
« Reply #3 on: March 05, 2014, 06:26:50 PM »
When riding solo, I was getting ~45mpg last summer, with 105's and SDP velocity stacks.  Needle unchanged in my PD46C's, and idle mixture richened slightly.
'78 CB550 - Orange Crush

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,012
  • Central Texas
Re: MPG - cb550 motogpwerks pipes
« Reply #4 on: March 05, 2014, 06:26:57 PM »
That is terrible, you should take that pipe off and sell it to me!

I don't play that "how many MPG..." game, I do everything wrong that is told to get get fuel economy (accelerate fast, speed, etc)

If I used my bike for commuting it would be different.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
Re: MPG - cb550 motogpwerks pipes
« Reply #5 on: March 05, 2014, 06:35:01 PM »

That is terrible, you should take that pipe off and sell it to me!

I don't play that "how many MPG..." game, I do everything wrong that is told to get get fuel economy (accelerate fast, speed, etc)

If I used my bike for commuting it would be different.


Been thinking bout going back to stock pipes, but don't know...

Probably wouldn't care so much if riding for leisure, but yeah I do commute on all my bikes, so 40 mpg is nice number
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline alacrity

  • Expert
  • ****
  • Posts: 928
  • Ride, Optimize, Repeat
Re: MPG - cb550 motogpwerks pipes
« Reply #6 on: March 05, 2014, 06:35:29 PM »
I am getting 44mpg.
see my signature line thing to see how the bike is setup
I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 11,155
Re: MPG - cb550 motogpwerks pipes
« Reply #7 on: March 05, 2014, 06:46:57 PM »
Seems like 550's often get worse mpg than 750's.  I have heard of many 550 guys reporting mpg figures in the high 30's.  30mpg even?...that is bad and I wouldn't think any pipe would cause mileage that bad.  My guess is you have a combination of hidden problems such as slightly rich jetting, mildly defective ignition, incorrect tire pressure, worn wheel bearings, worn drive chain, or some combination of some of these.  I have not had my 550 long enough to check mpg.  My 750 gets anywhere from 42 to 48 mpg depending on riding style and how many hours I left my bike sitting with the petcock on. :)
If it works good, it looks good...

Offline sixthwisconsin

  • Hot Shot
  • ***
  • Posts: 553
Re: MPG - cb550 motogpwerks pipes
« Reply #8 on: March 05, 2014, 07:00:18 PM »
40 mpg for me no matter what I do to the bike.

Have changed from a MAC 4 into 1 to a 550f pipe. Have always run the Tintop intake. Currently running 120 mains and 40 pilots but she is still a bit lean. If I can ever get the bike out of storage, I can work on that.

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
Re: MPG - cb550 motogpwerks pipes
« Reply #9 on: March 05, 2014, 07:17:17 PM »
I was getting about 35mpg prior to this, but felt a bit lean on the midrange so I adjusted the clips. At the same time, I've also been chasing low throttle richness problems.  Just wanted to get you guys input to see if 40mpg can be achieved with these pipes.

My other bikes 550s and 750s in stock configuration get 40mpg on average.   95 miles of cruising 70-80mph on freeway, WOT when going uphill :)
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline Tim2005

  • Expert
  • ****
  • Posts: 1,460
Re: MPG - cb550 motogpwerks pipes
« Reply #10 on: March 06, 2014, 10:30:12 AM »
Seems like 550's often get worse mpg than 750's.  I have heard of many 550 guys reporting mpg figures in the high 30's.  30mpg even?...that is bad and I wouldn't think any pipe would cause mileage that bad.  My guess is you have a combination of hidden problems such as slightly rich jetting, mildly defective ignition, incorrect tire pressure, worn wheel bearings, worn drive chain, or some combination of some of these.  I have not had my 550 long enough to check mpg.  My 750 gets anywhere from 42 to 48 mpg depending on riding style and how many hours I left my bike sitting with the petcock on. :)

Yeah,  agree about 550 mpg- my 750 returns 45, my 400 from 50-55, but my pretty stock 550 is in the 35-ish region. 

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,045
  • 1977 CB550F2
Re: MPG - cb550 motogpwerks pipes
« Reply #11 on: March 06, 2014, 10:49:30 AM »
My stock 550 will do 10 miles per liter and I am not economical. This works out to be around 39 MPG US.
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline iron_worker

  • Master
  • *****
  • Posts: 2,079
Re: MPG - cb550 motogpwerks pipes
« Reply #12 on: March 06, 2014, 11:09:48 AM »
Miles / liter?

lol

I guess the ODO reads in miles and the gas station probably reads in liters ... so makes sense .... sort of.  ;D

IW

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,045
  • 1977 CB550F2
Re: MPG - cb550 motogpwerks pipes
« Reply #13 on: March 06, 2014, 12:43:55 PM »
Miles / liter?

lol

I guess the ODO reads in miles and the gas station probably reads in liters ... so makes sense .... sort of.  ;D

IW
You are correct. We deal in miles. The pumps deliver liters. The rigmarole I went through to then convert to US gallons.   :-\
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline Bankerdanny

  • Eventually I will be old enough in reality to be
  • Really Old Timer ...
  • *******
  • Posts: 7,623
  • Endeavor to persevere
Re: MPG - cb550 motogpwerks pipes
« Reply #14 on: March 06, 2014, 12:56:30 PM »
That strikes me as very low. Even when I was commuting in Chicago traffic my completely stock '77 550K managed low 40's at worst. On the highway 47-48 consistently and I even broke 50 once.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Mooshie

  • Expert
  • ****
  • Posts: 1,042
Re: MPG - cb550 motogpwerks pipes
« Reply #15 on: March 06, 2014, 03:11:13 PM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
1976 CB550F
Standard disclaimer: Remember I am just a girl--so be nice fellows!

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,045
  • 1977 CB550F2
Re: MPG - cb550 motogpwerks pipes
« Reply #16 on: March 06, 2014, 03:13:31 PM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
Re: MPG - cb550 motogpwerks pipes
« Reply #17 on: March 06, 2014, 03:21:20 PM »

My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550

Very impressive numbers.  Make me depress at the same time.  Lol.  I gotta get those carbs adjusted.
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline Pat_at_APE

  • Enthusiast
  • **
  • Posts: 171
    • APE Race Parts
Re: MPG - cb550 motogpwerks pipes
« Reply #18 on: March 06, 2014, 04:52:39 PM »
My CB550F gets mid 30's and my CB750F gets high 40's average MPG. 

Pat at APE

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,012
  • Central Texas
Re: MPG - cb550 motogpwerks pipes
« Reply #19 on: March 06, 2014, 04:55:50 PM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550

Hi Mooshie....what exhaust do you have, Jardine? Looked at the calendars but do not recognize it.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Bankerdanny

  • Eventually I will be old enough in reality to be
  • Really Old Timer ...
  • *******
  • Posts: 7,623
  • Endeavor to persevere
Re: MPG - cb550 motogpwerks pipes
« Reply #20 on: March 07, 2014, 10:27:27 AM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)

Yes, I imagine the 100 extra pounds or so that my bike had to carry probably had some impact on mileage. LOL
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Mooshie

  • Expert
  • ****
  • Posts: 1,042
Re: MPG - cb550 motogpwerks pipes
« Reply #21 on: March 07, 2014, 11:48:21 AM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)

Yes, I imagine the 100 extra pounds or so that my bike had to carry probably had some impact on mileage. LOL

Awww, aren't you all sweet.  This is the only place where I get that type of a response! :-*  Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain.  I have no idea what type of mufflers/pipes I have.  I will take a closer look when I get home.
1976 CB550F
Standard disclaimer: Remember I am just a girl--so be nice fellows!

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 17,404
  • Humboldt, AZ
Re: MPG - cb550 motogpwerks pipes
« Reply #22 on: March 07, 2014, 08:29:24 PM »


Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain. 

PODS!!??? On a 550!!?? GASP!!! Girl, don't you know that Pods invert the flux turbulence pattern induced by the stock airbox??  :o :o ;)
How many miles have you logged with pods so far, Lisa? 8)
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline FunJimmy

  • Who you calling
  • Old Timer
  • ******
  • Posts: 3,798
  • Vancouver
Re: MPG - cb550 motogpwerks pipes
« Reply #23 on: March 07, 2014, 10:17:13 PM »
How many miles have you logged with pods so far, Lisa? 8)

Many.  ;D
You never see a motorcycle parked outside of a psychiatrist's office!

CB550 Cafe Interceptor a Gentlemans Roadster
http://forums.sohc4.net/index.php?topic=27159.0

Offline Powderman

  • Master
  • *****
  • Posts: 2,462
    • Creative Candy Powder Coating
Re: MPG - cb550 motogpwerks pipes
« Reply #24 on: March 08, 2014, 08:20:11 AM »
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)

Yes, I imagine the 100 extra pounds or so that my bike had to carry probably had some impact on mileage. LOL

Awww, aren't you all sweet.  This is the only place where I get that type of a response! :-*  Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain.  I have no idea what type of mufflers/pipes I have.  I will take a closer look when I get home.



"Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain." While they may be able to tune carbs can they show me a before and after dyno run with pods being the only change and it made more power than stock? It may run fine and dandy but better than the stock air box I have my doubts. I am still waiting after 15 years for someone to post proof that they got pods to work better than a properly tuned stock air box.

Offline Mooshie

  • Expert
  • ****
  • Posts: 1,042
Re: MPG - cb550 motogpwerks pipes
« Reply #25 on: March 10, 2014, 06:39:59 PM »


Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain. 

PODS!!??? On a 550!!?? GASP!!! Girl, don't you know that Pods invert the flux turbulence pattern induced by the stock airbox??  :o :o ;)
How many miles have you logged with pods so far, Lisa? 8)

18,000 miles and counting since 2010.
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)

Yes, I imagine the 100 extra pounds or so that my bike had to carry probably had some impact on mileage. LOL

Awww, aren't you all sweet.  This is the only place where I get that type of a response! :-*  Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain.  I have no idea what type of mufflers/pipes I have.  I will take a closer look when I get home.



"Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain." While they may be able to tune carbs can they show me a before and after dyno run with pods being the only change and it made more power than stock? It may run fine and dandy but better than the stock air box I have my doubts. I am still waiting after 15 years for someone to post proof that they got pods to work better than a properly tuned stock air box.

You're a serious kind of fellow aren't you Powderman? ;)  All I'm saying is I get great gas mileage and with pods.  Not making any other claims--50 mpg with over 18,000 miles works just fine for me.
1976 CB550F
Standard disclaimer: Remember I am just a girl--so be nice fellows!

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,012
  • Central Texas
Re: MPG - cb550 motogpwerks pipes
« Reply #26 on: March 10, 2014, 06:57:37 PM »


Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain. 

PODS!!??? On a 550!!?? GASP!!! Girl, don't you know that Pods invert the flux turbulence pattern induced by the stock airbox??  :o :o ;)
How many miles have you logged with pods so far, Lisa? 8)

18,000 miles and counting since 2010.
My 550 gets 50+ mpg consistently on highway and 45-48 on twisties.  I love my 550
You have less weight to carry though.   ;)

Yes, I imagine the 100 extra pounds or so that my bike had to carry probably had some impact on mileage. LOL

Awww, aren't you all sweet.  This is the only place where I get that type of a response! :-*  Oh, and I am running pods as well--Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain.  I have no idea what type of mufflers/pipes I have.  I will take a closer look when I get home.



"Kott Motorcycles knows how to tune and jet carbs for these bikes that is for certain." While they may be able to tune carbs can they show me a before and after dyno run with pods being the only change and it made more power than stock? It may run fine and dandy but better than the stock air box I have my doubts. I am still waiting after 15 years for someone to post proof that they got pods to work better than a properly tuned stock air box.

You're a serious kind of fellow aren't you Powderman? ;)  All I'm saying is I get great gas mileage and with pods.  Not making any other claims--50 mpg with over 18,000 miles works just fine for me.


Looks like it's turned into a pods thread.....ha!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Mooshie

  • Expert
  • ****
  • Posts: 1,042
Re: MPG - cb550 motogpwerks pipes
« Reply #27 on: March 10, 2014, 09:08:06 PM »
Nooooooooo. Not that! 
1976 CB550F
Standard disclaimer: Remember I am just a girl--so be nice fellows!

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,012
  • Central Texas
Re: MPG - cb550 motogpwerks pipes
« Reply #28 on: March 10, 2014, 09:49:35 PM »
Nooooooooo. Not that! 


Could be worse. What kind of oil do you think is best for your "podded" bike?!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 17,404
  • Humboldt, AZ
Re: MPG - cb550 motogpwerks pipes
« Reply #29 on: March 10, 2014, 09:54:22 PM »
While they may be able to tune carbs can they show me a before and after dyno run with pods being the only change and it made more power than stock? It may run fine and dandy but better than the stock air box I have my doubts. I am still waiting after 15 years for someone to post proof that they got pods to work better than a properly tuned stock air box.
The fact that she is getting 20% better fuel mileage than the average 550 is proof that her motor is operating more efficiently than most. ;) The stock 550 air filter has a very small surface area compared to a stock 750, and Honda jetted the carburetors to operate with this restricted input, much the same as running with the choke partially on.

Lisa, please post your current jetting, so others might learn from your/Kott's experience.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Trevor from Warragul

  • Expert
  • ****
  • Posts: 1,115
Re: MPG - cb550 motogpwerks pipes
« Reply #30 on: March 10, 2014, 10:32:18 PM »
My Kawasaki H1A does about 19 miles per US gallon...   ;D
1971 Kawasaki H1A
1972 Honda CB350F
1976 Moto Morini 3 1/2 Sport
1978 Honda CBX
1997 Suzuki Bandit 1200
1999 Ducati Monster 750

Offline dave500

  • Really Old Timer ...
  • *******
  • Posts: 17,245
  • WHAT?no gravy?
Re: MPG - cb550 motogpwerks pipes
« Reply #31 on: March 11, 2014, 01:15:10 AM »
i care less for mpg figures,i do get nearly 200 kays before i need to switch to reserve though,sometimes 170,sometimes just over 200 on my 550 which often gets pushed.

Offline Mooshie

  • Expert
  • ****
  • Posts: 1,042
Re: MPG - cb550 motogpwerks pipes
« Reply #32 on: March 12, 2014, 12:12:46 PM »
Nooooooooo. Not that! 


Could be worse. What kind of oil do you think is best for your "podded" bike?!

LOL--pass the popcorn!

While they may be able to tune carbs can they show me a before and after dyno run with pods being the only change and it made more power than stock? It may run fine and dandy but better than the stock air box I have my doubts. I am still waiting after 15 years for someone to post proof that they got pods to work better than a properly tuned stock air box.
The fact that she is getting 20% better fuel mileage than the average 550 is proof that her motor is operating more efficiently than most. ;) The stock 550 air filter has a very small surface area compared to a stock 750, and Honda jetted the carburetors to operate with this restricted input, much the same as running with the choke partially on.

Lisa, please post your current jetting, so others might learn from your/Kott's experience.

When he was modifying the bike for me I never asked.  They have not been messed with since.  When I speak to him again I will ask him.  He seems to have it dialed in.
1976 CB550F
Standard disclaimer: Remember I am just a girl--so be nice fellows!

Offline LesterPiglet

  • Old Timer
  • ******
  • Posts: 4,045
  • 1977 CB550F2
Re: MPG - cb550 motogpwerks pipes
« Reply #33 on: March 12, 2014, 12:17:17 PM »
...over 200 on my 550 which often gets pushed.
No wonder you're getting good mileage. Try it using the engine.   :P
'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,012
  • Central Texas
Re: MPG - cb550 motogpwerks pipes
« Reply #34 on: March 12, 2014, 03:05:07 PM »
Nooooooooo. Not that! 


Could be worse. What kind of oil do you think is best for your "podded" bike?!

LOL--pass the popcorn!

You want popcorn?!!


'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stilltime

  • Hot Shot
  • ***
  • Posts: 353
  • Building my Dream
Re: MPG - cb550 motogpwerks pipes
« Reply #35 on: March 15, 2014, 01:57:37 PM »
Just a heads up, there are two MotoGPWerks pipes for CB550 on eBay right now...
'78 CB550 - Orange Crush

Offline dave500

  • Really Old Timer ...
  • *******
  • Posts: 17,245
  • WHAT?no gravy?
Re: MPG - cb550 motogpwerks pipes
« Reply #36 on: March 15, 2014, 02:18:50 PM »
...over 200 on my 550 which often gets pushed.
No wonder you're getting good mileage. Try it using the engine.   :P

no wonder im out of breath?

Offline goldarrow

  • one day, i'll be an
  • Old Timer
  • ******
  • Posts: 3,360
Re: MPG - cb550 motogpwerks pipes
« Reply #37 on: July 29, 2014, 08:15:55 AM »
finally getting my mpg back to where about the norms, and performance is great all around.  needing may be final carb sync and a/f screw adjusted as rpm takes several seconds to come down to idle. 

current configurations
1976 cb550k with 087A carbs

cb650 camshaft
stock airbox intake with UNI foam filter
38 idle/slow jets
a/f screw at 1 3/4 turns out
needle clips at 2nd notch from top
100 main jets
motogpwerks exhaust pipes
41mpg on the last 100 miles commute
great accelleration all the way up to 80mph
no popping on deceleration
rpm hangs a bit as slowing down coming to a stop
carbs probably have come off the bike at least 10 times!

i hope all these info helps out some of you guys who's going through tuning/jettings process
« Last Edit: July 29, 2014, 08:18:19 AM by goldarrow »
Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0