Author Topic: im new here and new to SOHC\4 bikes (Read 2102 times)

L3niin · « **on:** December 13, 2011, 08:34:55 PM »

thats my bike a 1971 cb 500 four ive done a ring job, valve job , new clutch plates and allot of other little things ..

i thought it was running right but i started to hear a little rattle comming from what i think is the timing chain, but it stops when i hit 4,000 RPM and always at 4,000 exacly in every gear ..

do you guys have any thoughts about it .. should i be woried

dave500 · « **Reply #1 on:** December 13, 2011, 09:09:16 PM »

gday L3,welcome,,your noise might be the rocker shafts worn in the cover?where the rocker shafts ride they wear the actual cover in an oval,to check the wear youll have to back the tappets right off,then with those end caps removed you can screw a 6mm bolt into that thread designed for pulling the shafts out with,,dont pull on the shafts but try and wiggle them up and down and round and round and see what you find,youl have to rotate the engine at some point as even with the tappets backed off one or two will ride on the valve and not let enough slack to wobble those shafts.

Stev-o · « **Reply #2 on:** December 14, 2011, 03:30:54 AM »

Have you adjusted the valves?

Lostboy Steve · « **Reply #3 on:** December 14, 2011, 08:09:43 AM »

Welcome... No idea what that noise is, but Dave seems to be spot on most of the time so I'd follow his diags.

bjatwood · « **Reply #4 on:** December 14, 2011, 10:35:45 AM »

Quote from: Stev-o on December 14, 2011, 03:30:54 AM

Have you adjusted the valves?

I'm thinking he probably did that when he did the "Valve job" on it....

mrbreeze · « **Reply #5 on:** December 14, 2011, 03:00:43 PM »

Synch the carbies. If they're off....you will get that noise big time as the cylinders are fighting each other.

L3niin · « **Reply #6 on:** December 25, 2011, 06:42:22 PM »

#$%* so much for trying to fix it .. i was heading to work .. and some guy just cut me off.. i T Boned the car and flying i went,
i havent really seen the bike i been at the hospital and well in bed i saw that the headers and the forks were bend carbs were moved and little stuff here and there i still dont know the reall damage on it i cant walk very much

broke my collar bone, 3 chpped ribs one swollen ass foot, missing skin on pinky ,but i was wearing a healmet and im alive and i was super man for a couple seconds

72500john · « **Reply #7 on:** December 25, 2011, 06:50:27 PM »

get well soon and keep us posted on your progress..our thoughts and prayers are with you!!

78 k550 · « **Reply #8 on:** December 25, 2011, 07:25:16 PM »

Get well soon.

Paul

Don R · « **Reply #9 on:** December 25, 2011, 07:32:47 PM »

Get well quick. sorry to hear about your bike. Congrats on the superman. Flying is easy, landing is hard.

dave500 · « **Reply #10 on:** December 25, 2011, 10:48:12 PM »

bad #$%*,get well.

Stev-o · « **Reply #11 on:** December 26, 2011, 05:26:58 PM »

Sorry to hear...........

bjatwood · « **Reply #12 on:** December 27, 2011, 08:10:32 AM »

Man "Clark Kent" that's bad news! But, there's another Lois Lane around every corner!

Keep the cape up, you'll be flying again in no time! (pun intended)

CrankyOldGuy · « **Reply #13 on:** December 27, 2011, 08:13:58 AM »

Take care ... wish you all the best in your recovery!

Harry O.

70CB750 · « **Reply #14 on:** December 27, 2011, 08:17:14 AM »

No $hit! Glad you ok, aspiring Clark Kent

Get better soon, your motorcycle needs you.

L3niin · « **Reply #15 on:** February 14, 2012, 06:04:50 PM »

Alright guy thanks for the support now im back in action..
so i saw my forks thous are total goners but the triple tree is still good..

so i was thinking of putting a inverted system on the bike a friend told me about this brand Hyosung pretty inexpensive .. but im guessing i will need a new break system and something to hold the light and wheel i dont know if it fits or if it fits in the triple tree... you know i dont wanna buy them and don't FIT

well my question is is that a good idea?
right now Don't Have the stock cb 500 i believe i have a suzuki GS 80's i believe is dual disk its ok ..

what do you guys recommend ? for the Forks

go to stock ? inverted ? back to the Suzuki ones ?

well the headers are bend also they touch the frame i dont know if it would be fine to run it like that if i had to ?

grcamna2 · « **Reply #16 on:** February 14, 2012, 07:22:45 PM »

Quote from: 72500john on December 25, 2011, 06:50:27 PM

get well soon and keep us posted on your progress..our thoughts and prayers are with you!!

+1

Stev-o · « **Reply #17 on:** February 15, 2012, 01:35:24 AM »

I would replace with stock so you know it will fit/work. The front end off a 550 may also work.

Have you looked in the forcsale section of this forum?

TwoTired · « **Reply #18 on:** February 15, 2012, 02:15:51 AM »

Check the down tubes on the frame to see if they are bent, changing the headstock angle on the frame.
I know you don't want to think the frame is bent. But it seems unlikely that the forks, would absorb ALL the distortion damage in a crash this bad.

Bob3050 · « **Reply #19 on:** February 15, 2012, 01:59:02 PM »

L3niin: From your pictures it's obvious the front end took a hard direct hit and because of that I would pull the steering stem (triple tree) and check it closely. I've seen many bent at the lower bearing area. Also check the lower bearing area of the frame for any distortion. Glad to hear that you're ok and good luck.
Bob

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Author Topic: im new here and new to SOHC\4 bikes (Read 2102 times)

72500john