Author Topic: 1979 cb650 project ((((now for sale)))) (Read 10777 times)

MMICAFE · « **on:** August 04, 2009, 11:14:06 PM »

i finally started the project on my 650 im cleaning up the whole top end of the motor and replacing all the gaskets and orings in between right now im in the dissasembly stage and next stage will be cleaning and polishing here are the pics of the work i have done today

MMICAFE · « **Reply #1 on:** August 04, 2009, 11:25:13 PM »

and here are some more pics from the first day of work

Hush · « **Reply #2 on:** August 05, 2009, 01:02:04 AM »

Did the bike have a blown head gasket? Just seeing the oil seepage around the head.
Everything looks pretty tight, valves look OK.

manjisann · « **Reply #3 on:** August 05, 2009, 07:05:15 AM »

Looks like a good start. I wanted to redo the top end this time around, but money ran out and it looks like it's a good thing I didn't as i'm running out of time as well. It's neat to see these old 650s getting fixed up, seems there are more and more of them. Or maybe I just notice since I have one now

Brandon

MMICAFE · « **Reply #4 on:** August 05, 2009, 09:12:15 AM »

thanks guys yes hush the head gasket was craked in about 3 or 4 places hints the oil seepage im just trying to remeber to put the o-rings back on the sides of the cylinders back on when im done. How do yall suggest cleaning up the piston domes and combustion chambers my dad told me that a hard brush and a drill will work perfectly but I dunno. The one thing that surprised me was that I could still see the cross-hatching on the cylinders. and do you guys know anything about the white stuff in the exhaust headers?

Hush · « **Reply #5 on:** August 05, 2009, 02:15:47 PM »

I think maybe that white stuff is well burned gas/oil mix, better than finding a whole lot of unburned fluffy carbon I guess.
Not sure about cleaning the tops of the pistons but it's bound to be in the FAQs section somewhere, an old vacuum cleaner in the shed is handy for the bits that insist on trying to go back down past the rings to the sump.

MMICAFE · « **Reply #6 on:** August 17, 2009, 12:21:10 PM »

wel im finally done everything is together i just havent started her up yet and im a little nervous about it sorry i didnt take any pictures after taking it apart but im just so happy it is finally back together

manjisann · « **Reply #7 on:** August 17, 2009, 01:24:36 PM »

Quote

sorry i didnt take any pictures after taking it apart but im just so happy it is finally back together

But with no pics, there's no proof

Congrats and good luck on the startup!!

Brandon

Hush · « **Reply #8 on:** August 18, 2009, 01:11:11 AM »

Don't forget to report back when you do fire it up eh.

MMICAFE · « **Reply #9 on:** August 18, 2009, 12:42:04 PM »

i did fire her up yesterday and it ran but the valves were ticking pretty good my dad did the valves for me his way and i dont understand how he could just use a small screw driver and a socket wrench i need to get this stuff done soon anyone know how to adjust the valves better than a screw driver and socket i have a memorial ride i want to go on tomorrow for a fellow rider that passed away (not on his motorcycle) i want to get this done sometime today or tomorrow morning before i have to go on the ride i dont want to miss this

Hush · « **Reply #10 on:** August 18, 2009, 12:50:38 PM »

He probably did it right just need to use a feeler guage to get the distance right on them, they are a #$%* to gap but it has to be done.

MMICAFE · « **Reply #11 on:** August 18, 2009, 03:55:26 PM »

he did do them "right" and he did use the feeler gauges but i dunno

MMICAFE · « **Reply #12 on:** August 21, 2009, 06:49:53 AM »

right now im having some serious issues getting the valves adjusted i do the process right and the correct setting on the intake and exhaust i put it all back together and every time i have started it up after adjusting the valves tick even though i adjusted them right is there anyone in the houston texas area that can help me out im about to break down and get a dealer to work on it for me please help me before i waste my money

checkflag · « **Reply #13 on:** August 21, 2009, 12:23:34 PM »

I feel you on the valve adjustment.. mines been done 4x since in the last 3 weeks..

First time the PO did it and totally f**ked it up. Now my buddy has done it.. 3x. but the
first 2x we got the sequence wrong. you have to do it in the exact order the Honda manual
says to do it in. There are several opinions as to the gaps on these forums, but we set it as
the book recommends and now it it fine. Of course The motor is apart while the top ends gets
machined and my guy is in louisiana shooting his documentary. But, we ran it before it was all
taken apart and as far as the valves go, she was fine. Ill let you know how it goes after we
get the top end installed.

MMICAFE · « **Reply #14 on:** August 21, 2009, 02:18:10 PM »

i have been doing it the right way exact from the manual and everything following th sequence and all that crap i have don it every day 3 times for the past 2 weeks

MMICAFE · « **Reply #15 on:** August 21, 2009, 04:44:11 PM »

ok guys i got extremely frusterated with my bike and put her up on craigslist here in houston and i got a offer on a honda cm400 cafe racer with a few good things that come with the bike and i really like it a bit better than the 650 i will get some pictures of it on here asap and i want you guys to tell me what you think

Hush · « **Reply #16 on:** August 21, 2009, 05:19:58 PM »

Sounds like your hands are in the air already mate ha ha, see what it's like, could be a goer.

scunny · « **Reply #17 on:** August 21, 2009, 05:46:43 PM »

I've never heard of someone selling a bike because they couldn't adjust the valves before. good luck with the new bike tho

manjisann · « **Reply #18 on:** August 21, 2009, 06:14:05 PM »

Hey Hush, maybe you should send Jaffa over and she could do it in one try

You gave up to easy, but good luck witht the new bike, hope it works out for you!

Brandon

MMICAFE · « **Reply #19 on:** August 21, 2009, 06:33:32 PM »

i didnt give up eaisily i have been doing this for the past 3 weeks and not getting any where first week figured out i was 1 tooth off and couldnt get the exhaust valves adjusted and then the second week was a pain cause i didnt have the right tools 3rd week was like the 2nd but i actually had tools that helped me right but it didnt do any good i adjust them to the honda specs and it still doesnt work i do everything the manual tells me and all i get is the vlaves ticking

scunny · « **Reply #20 on:** August 21, 2009, 07:17:27 PM »

they do tick, it's an air cooled motor so you get to enjoy all the sounds these motors have.

MMICAFE · « **Reply #21 on:** August 21, 2009, 07:56:08 PM »

it doesnt make good ticking sounds when i start it up after adjusting the valves it ticks like crazy but when i give it throttle it looses power if i had a camera i would records it and let you guys hear how bad it sounds

manjisann · « **Reply #22 on:** August 21, 2009, 08:03:55 PM »

I wasn't trying to be offensive, it sounds like you've given it a go and a wise man knows when to throw in the towel and move on. YOU have to decide how much effort and money you want to put in to it, and everyone is different. I seriously hope you are able to get a fair price for your bike and you are able to find one that you can enjoy. Some of us enjoy tinkering (that would be me) some of us enjoy riding, and some of us find a way to do both. There is nothing wrong with any of the three types.

Brandon

Hush · « **Reply #23 on:** August 22, 2009, 03:23:54 AM »

Maybe that noise is the cam chain, again a pain in the ass to get right but easily adjusted, in fact Kit showed me a way to do it while the bike was running, just get the bike idling and slacken the cam chain adjuster off a little, now retighten the adjuster nut. I did this one day and the engine went so silent I thought it had stalled.

MMICAFE · « **Reply #24 on:** August 22, 2009, 11:59:02 AM »

thanks hush im gonna go take care of that now and report back when she is running right (or sounding right)

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Author Topic: 1979 cb650 project ((((now for sale)))) (Read 10777 times)