I have a 235 (1954). it's been a little modified. ( bored .30). also, have a fenton dual carb set up. (running 2- single barrel rochesters from a 216.) when I tried cars from a 235, it flooded the engine. too much fuel!. the car runs great! the issue is, the 2- inner chrome header tubes are turning blue! too much heat? I pulled a few plugs. they look like they have a bit of tan. i'am running AC R 43 PLUGS. does any one out here have a suggestion as to what I can do? thanks!
They make a product (although I've never used it) to take the blue off motorcycle exhaust, it's a common occurrence. Sorry, maybe some one here can help with your plug/carb choice.
Blue Job & it works quite well. Running-cruising lean (jets - not screws) will turn chrome pipes blue. There's no sense in buffing it off if the cause isn't corrected.
Ceramic coat the headers. They have a silver tone color choice that's not too bad and that will keep your engine color combo about the same.
I have heard of an old biker trick coating the inside of the tubes with heavy grease. Supposed to put a protective heat shield on the I.D. Probably would smoke for a while !
My ol' buddy, John use to seal the ends of the chrome headers and pour left-over paint into them. It coated the inside of the headers and helped insulate the chrome from heat. He had limited luck with it. I bought "Blue Away" from the local Harley shop to remove bluing from a pair of chrome plated chevy exhaust manifolds. MAN! What a job that was! My arms were tired when I finished but they looked great! For about 5 minutes. Live with the blue.
They make a product that you pour into the pipes for a interior coating to reduce the blueing (any of the big Motorcycle parts sellers will have it) but it won't completely eliminate it. But it only works if applied on new, unused pipes as it won't stick to any carbon. And if your mixture is off, they'll still blue....
If they didn't turn blue it would be a sign that you weren't getting on it. Continue doing what you are doing.
Chrome pipes blue and usually if they have a tight bend that is where they will blue first, funny thing that is usually where the paint flakes first too. Sometimes it is an indication that it is timed slow but not always. We used to run our bikes a little fat to try and keep the pipes from bluing and it seemed to help a little bit but they still blued eventually. it is just the nature of the beast.
Look at any new HD and you will find chrome heat shields over the pipes, underneath the pipes are blue. The shields use a clamp much like a radiator worm screw hose clamp that the shield screws to. A guy could fabricate the same for the engine bay.
Yep the engineers figured it out. Another thing that is being done on bike pipes that would probably not be cost effective is to building them double wall. Basically a pipe in a pipe with an air gap.
Thanks for all the replies guys. I was kind of thinking on the same lines as Dudley. Running too lean? Next question ? does anybody know how to richen up these old single barrel Rochester's up?
I my guess is thst you're not familiar with motorcycles. Sent from my SM-J700T1 using The H.A.M.B. mobile app
They sell polish to remove the bluing. It wont make it look like new, but it helps a bit. Sent from my SM-J700T1 using The H.A.M.B. mobile app
with today's spark plugs hard to use them as a true indicator as to how motor is running. tips of exhaust pipes will help with figuring out tuning - post pics of motor, including carbs without air cleaners.
I do know a little about carbs. I thought maybe one of you guys, would know what jet size I would need to step up to?
Motorcycle shops sells the polish for bluing. Regular chrome polish won't work as well. Sent from my SM-J700T1 using The H.A.M.B. mobile app
The Jalopy Journal
