1973 Honda CB500 four with open exhaust

Idle and rev with new Mac exhaust (baffle removed) and Dyna Ignition. Other mods include 550cc pistons, Web street camshaft, and high performance valve springs. Seems to run good with baffles in with just the stock jets...It runs a little rough with the baffles out but would probably be okay if I put in one size larger jets.

Category:

Autos & Vehicles

Tags:

• Honda
• motorcycle
• CB
• CB500
• four
• cafe
• vintage

[aaron71]

sounds really good! just picked up a 71 myself... any info on that cam or was that old stock?

[cyclepsycho05]

@aaron71 Its a Web Camshaft ...You send yours in and they weld material on and grind new profiles. I picked a more streetable profile with almost no extra lift but extra duration.

[Alemi9]

how do i add back pressure to my bike i have a cb550 i cut the pipes do i need to adjust the carbs? longer pipes? cause wen i gas it ,, It cuts off.. idk.. thx man

[cyclepsycho05]

okay...so what did you do? you cut the mufflers off the stock exhaust system? Adding back pressure isn't a good thing if you're concerned with the performance. Sounds like you might have an overly rich mixture at WOT. First start by checking the timing and making sure it's set to the proper advance...if it is you might bump it up a degree or two. If that still doesn't do anything, then you'll have to start messing around with different sized jets.

[Turbojeep23]

im not a huge fan of handa but they are damn good bikes. eventually id like to get a 550 four engine and build a dune buggy with it. it would sound sweet and be fast as hell

[cyclepsycho05]

Haha, that would be a fun project...I'd recommend the 750 four motor for a dune buggy project, though. A little more horsepower and more available go-fast parts. I've got a 96 civic and when I do an engine swap I want to take the engine that's in it currently and make a fun little tube-framed street car.

[flatfour65]

Awesome sound! Do a flyby vid with that open pipe!

[Haroldkappers]

nice sound!

[sewyfisherman]

Wow sound! Did you change the size of the main jets?

[bc4000sl]

nice sound!!

[soldier4God01]

sounds awesome where did you find the parts at??

[SantiFer25]

where can i get parts to reconstruct a CB 500F? any info, jcristobal2002@yahoo.com

[transdetendal]

HELL it sounds sweet, no kidding ive love to have my sounding like that,WOW

[previdi]

I have one with open exhaust too, 5 stars!

[Spencerian]

Nice Job. :)

[13JOKER1994]

nice sound  5*****