engine noise

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

hey guys how loud is the xs650 motors when i ride mine its super loud not the exhaust but valves pistons every thing .......I know the valves are set right becouse i just set them. is it just a loude motor ........keep in mind im riding a custom hard tail frame bobber so im on the motor with nothing else to block the sound.

tito650 · Posted: February 13, 2009, 10:06 pm Post subject: Re: engine noise

just put in ear plugs. and ride till it quits Cool

..... or ask somone else Razz

xsjohn · Posted: February 13, 2009, 10:07 pm Post subject: Re: engine noise

Tee Hee........sounds like me 10 years ago.........with my small fairing I could hear everything..........just got off the express after a 150 mile jaunt.....heard nothing

xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

yeah lol ok so im not a pansy its just crazy loud and it rumbles so much my ass hurts lol after a long ride on a solo springer seat but i would not change it for the world.

xsjohn · Posted: February 13, 2009, 11:03 pm Post subject: Re: engine noise

Didn't mean it that way......gearing sucks on these stock....if you are on the highway a lot taller gearing will help..depending on your weight.......the CR on these things is pretty high for a small engine......went to 8-1 and it really setteled down nice........bit of a mechanics thing for that one though......not sure what you are into ........

Have you set the usual things....valves cam chain and such.......and does it have the top motor mount on it.....

xsjohn

jayel · Posted: February 13, 2009, 11:16 pm Post subject: Re: engine noise

xsjohn wrote:

Tee Hee........just got off the express after a 150 mile jaunt.....heard nothing

xsjohn

note to john; replace hearing aid battery

short exhaust pipes are going to be loud and riding posistion on a chop puts you a lot closer to the ends of the pipes also, then you're sitting right behind the engine so you hear the mechanical noise, cams, tappets, valves, ect. and yes it's a loud motor after all it's a old design and not as close tolerance as the new stuff

xsjohn · Posted: February 13, 2009, 11:49 pm Post subject: Re: engine noise

Don't need batteries......I have 20-20 hearing........ Laughing

xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

yeah i have set most every thing that can be set on the bike the only thing left is timing and points gap but im going to get an accel coil so im just waiting but yeah im going to look at some higher gears becouse it seams i get high up in the rpm's very fast and im not going very fast but then againg i have no speedo and im the kind of person that cant ever go too fast.........i have a question speed cable goes in to the motor right and the rpm cable goes in to the front tire????

gordo · Posted: February 13, 2009, 11:56 pm Post subject: Re: engine noise

(LITTLE FINGER UP MY NOSE)DUH,i TINK SO,

xsjohn · Posted: February 14, 2009, 1:25 am Post subject: Re: engine noise

An engine set up "right" is not noisy.................xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

so i should not be hearing the valves? when its running now your confusing me

i can hear it very well on my bobber and i know how to do valves as i had an old vw bug and lol every 3000miles with an oil change comes a valve job

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

and yes it has a top motor mount

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

gordo wrote:

(LITTLE FINGER UP MY NOSE)DUH,i TINK SO,

remind me never to shake your hand

xsjohn · Posted: February 14, 2009, 1:55 am Post subject: Re: engine noise

""""""so i should not be hearing the valves? when its running now your confusing me """"""""

ost people do hear their valves.........I don't............I just added lubrication........noise is metal to metal......and the fricken CR is a bit too high to run quietly.....once this is fixed the engine is a lot quieter.......

xsjohn

weekendrider · Posted: February 14, 2009, 2:00 am Post subject: Re: engine noise

xsjohns, scooter is highly/largely/mostly customised. With one off stuff you can't buy off the chrome rack. If you want to know why he doesn't hear his valves search for his valve oiler thread.
jayel was right on, these just sound like old singers or sickle mowers.

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

what do you mean you added lubrication

xsjohn · Posted: February 14, 2009, 2:15 am Post subject: Re: engine noise

Spent a lot of time on this subject......and many are using elephant feet on the intakes......not sure anyone has confirmed that it absolutely quiets the intakes.......and there is a damn that keeps oil from slinging back.....no one has reported experimenting with relieving it to allow the oil to go back from the cam.......I will leave the oilers on and add the elephant foot sometime.....that's where I'm at....and I can remove the oilers in 15 minutes but won't........

Here is the link......bit of handywork if inclined........

www.650rider.com/index...pic&t=1504

Dimpled the pistons and balanced them and got the carbs right and and the right cylinder heat under control and geared it up so it cruises........that is how I reduced the racket.....started doing this crap in 1971.....on other bikes.....I hate a fricken rattle trap........

xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

lol holy crap dude i dont think any one in the world has done more carzy mods to this motor than you............good idea

xsjohn · Posted: February 14, 2009, 2:23 am Post subject: Re: engine noise

Have you ever seen what they did to lubricate a locomotive or some factory machines......what I did is nothing......just added oil to the noisy places.....don't know of another way.........

And I never do anything that I can't back out of easly.......and these don't need money thrown at them for some fashion statement to be fun....just some tlc...............

Don't know what you guys are going to do at high speed without rear suspension.....I know today at 70 mine felt like it left the ground a couple of times on the express it was so bumpy......like at the bridges.....or just a 2 inch high patch .........

xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

yeah im hope that with some higher gears and less rps's less rumbling

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

yeah im hope that with some higher gears and less rps's less rumbling

xsleo · Posted: February 15, 2009, 9:15 pm Post subject: Re: engine noise

interex87, you asked a question a way back , it doesn't look like any one answered it. the speedometer goes to the front wheel and the tachometer goes to the right side of engine. yes xsjonh has done some amazing things to his engine. as i am rebuilding mine i will use some of his ideas. the higher gears and dimpleing the push rod are a couple of them.

xsjohn · Posted: February 15, 2009, 9:17 pm Post subject: Re: engine noise

xsleo........Have you tried the 8-1 CR...........will get rid of all the noise and most of the vibes......like I told tc.....70 mph down the express 2 days ago on a trip and though I was on my buddies 4 cyl.........18/29.......

xsjohn

interex87 · Full Member Joined: Feb 04, 2009 Posts: 100

8-1 cr?? im not sure what that is

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