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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Thu Apr 07, 2016 6:11 pm Reply with quote Back to top

Loctite, Loctite, Loctite must remember Loctite.
 
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Wayne750F
Black CB750F
Black CB750F



Joined: Mar 29, 2015
Posts: 812
Location: Palm Beach, Florida

PostPosted: Thu Apr 07, 2016 7:18 pm Reply with quote Back to top

hahahahaha YEP on the slotted gear AND on the starter clutch bolts LOL.....then back in the bike and on the road.....

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1981 Black CB750F 887 Project Sleeper 750
1983 Red CB1100F
1991 Suzuki GSXR1100
1993 Yamaha FZR1000 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Thu Apr 14, 2016 3:22 am Reply with quote Back to top

I found the cam gear bolt. This is looking down the cam chain tunnel through the barrels.
 
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Captain
CB1100F
CB1100F



Joined: Jan 02, 2009
Posts: 2250
Location: New Zealand

PostPosted: Thu Apr 14, 2016 4:03 am Reply with quote Back to top

Looking at that I would say that the bolt has gone through the chain .................Ouch !

Talked to Tony (herdygerdy) last night about a visit so it just might come off and I can have a look while I'm there or if you have progressed that far, re-degree the cams for you.

Captain

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The answer is always "more power" always was, always is and always will be. 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Thu Apr 14, 2016 7:53 am Reply with quote Back to top

I reckon the bolt fell out and jammed in the chain at the crankshaft and that is what stalled the engine.
When I tried to clutch start it that's when the "oh no" happened.

I tried calling Tony today but couldn't get onto him.
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Thu Apr 14, 2016 8:17 am Reply with quote Back to top

Here's the tensioner
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Thu Apr 14, 2016 8:19 am Reply with quote Back to top

Can't do 2 photos on one post
 
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Shawn_Mc
CB1100F
CB1100F



Joined: Jul 30, 2012
Posts: 2814
Location: Anaheim Hills, Ca.

PostPosted: Thu Apr 14, 2016 7:07 pm Reply with quote Back to top

Id carefully clean it up with a file and run it.

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Chooky
Twinstar
Twinstar



Joined: Jul 23, 2010
Posts: 242
Location: Australia

PostPosted: Fri Apr 29, 2016 12:33 am Reply with quote Back to top

scottx wrote:
I'm going to make some satay now so the bike will have to wait a bit.

Best. Satay. Ever. 👌
Good to see your getting into it Scott. It will turn out better than before.
 
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Wayne750F
Black CB750F
Black CB750F



Joined: Mar 29, 2015
Posts: 812
Location: Palm Beach, Florida

PostPosted: Fri Apr 29, 2016 2:26 am Reply with quote Back to top

While it looks like you could get it cleaned up with filing and buffing Scotty, I think I'd be calling up Brent....don't wanna get back in there again.

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1981 Black CB750F 887 Project Sleeper 750
1983 Red CB1100F
1991 Suzuki GSXR1100
1993 Yamaha FZR1000 
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Captain
CB1100F
CB1100F



Joined: Jan 02, 2009
Posts: 2250
Location: New Zealand

PostPosted: Fri Apr 29, 2016 3:02 am Reply with quote Back to top

It's OK, I'm in Sydney next Sat/Sunday and staying with Herdygerdy who lives very close. So will be calling in to see Scott and help him where I can.

Captain

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The answer is always "more power" always was, always is and always will be. 
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Wayne750F
Black CB750F
Black CB750F



Joined: Mar 29, 2015
Posts: 812
Location: Palm Beach, Florida

PostPosted: Fri Apr 29, 2016 12:21 pm Reply with quote Back to top

Captain wrote:
It's OK, I'm in Sydney next Sat/Sunday and staying with Herdygerdy who lives very close. So will be calling in to see Scott and help him where I can.

Captain

Awesome Brent....what a go he's had in the last month with TWO down.....I've been sick for him....SCOTTY!!!! Reinforcements are on the way mate!!!

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1981 Black CB750F 887 Project Sleeper 750
1983 Red CB1100F
1991 Suzuki GSXR1100
1993 Yamaha FZR1000 
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herdygerdy
Hawk
Hawk



Joined: Feb 27, 2007
Posts: 273
Location: Sydney, Australia

PostPosted: Sat Apr 30, 2016 12:11 am Reply with quote Back to top

Hi Scotty,

Brent arr. mid pm Sat 07MAY, so may be best to get together Sunday, but with it being being Mother's Day, you may have more pressing obligations...?

Have a think and let me know. Looking fwd to catching up and hopefully helping out.

Cheers..herdygerdy Cool
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Apr 30, 2016 1:32 pm Reply with quote Back to top

Gday Tony

I'm not too sure what's happening next weekend. My Mum lives in QLD so I guess if I ring her in the morning I have the rest of the day free. But maybe I should wait and see if we have a family thing or not.

I'll ring you during the week.

The engine isn't at a stage where we can do too much cause I think I need to check the crank for straightness and I don't have the head back yet or any other parts for assembly.

We can still look at it while sitting in a chair and talking, so swing by and have a beer.

Scott
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Tue May 03, 2016 11:42 pm Reply with quote Back to top

Not too bad 4 bent valves. 2 in 2 out. No damage to the pistons so a bit of a surprise, but happy to have had the head serviced rather than take the risk and run it with out checking.

It's got them Kibble White valves so it will be a month or so until they get them in.
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Tue Jun 07, 2016 11:58 pm Reply with quote Back to top

Wow its been a month.

The other head which is off the sidecar has 8 bent exhaust valves.

It's taken a while for the dude to pull it apart and inspect it, but at least it's one step closer to being fixed.
 
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Wayne750F
Black CB750F
Black CB750F



Joined: Mar 29, 2015
Posts: 812
Location: Palm Beach, Florida

PostPosted: Wed Jun 08, 2016 1:27 am Reply with quote Back to top

Been thinkin bout you Scotty wondering how it was going....not good obviously but not devastating....thanks for the update mate, I know you're working a lot. Keep us posted!!!

Wayneo

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1981 Black CB750F 887 Project Sleeper 750
1983 Red CB1100F
1991 Suzuki GSXR1100
1993 Yamaha FZR1000 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Tue Jul 05, 2016 3:43 am Reply with quote Back to top

Back at it again. Bearings came in so I am cleaning the cases and going to assemble with new bearings but no crank and send it to be measured.

I need to find out why it keeps eating the outer crank bearings.

I just found a little surprise in the lower crankcase left hand side
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Tue Jul 05, 2016 3:43 am Reply with quote Back to top

Another picture
 
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Bone
Black CB750F
Black CB750F



Joined: Oct 20, 2014
Posts: 879
Location: Canberra, Australian Capital Territory, Australia

PostPosted: Tue Jul 05, 2016 6:47 am Reply with quote Back to top

Good luck with it all Scott. Good to see i am not the only one that skins their knuckles doing this stuff Wink

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1981 CB750F (gone, but not forgotten)
1982 CB900FC
1981 CB900F2B 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Jul 09, 2016 6:59 am Reply with quote Back to top

Bone wrote:
Good luck with it all Scott. Good to see i am not the only one that skins their knuckles doing this stuff Wink


Gday Chris
Thanks for the good wishes. I got the cylinder heads back today.

Hows it going at your end? Quite busy I seem to remember reading.

Have a good one
Scott
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Aug 20, 2016 6:21 am Reply with quote Back to top

Seeing as it's not a race I glued the cases back together the other day.
Another week or two and I'll get the sump on.
 
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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Aug 20, 2016 7:44 am Reply with quote Back to top

I recon I'll put the oil pump on before the sump. That way I can watch myself break the little gear thing that is a prick to replace.

Good thinking?
 
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Shawn_Mc
CB1100F
CB1100F



Joined: Jul 30, 2012
Posts: 2814
Location: Anaheim Hills, Ca.

PostPosted: Sat Aug 20, 2016 5:14 pm Reply with quote Back to top

scottx wrote:
I recon I'll put the oil pump on before the sump. That way I can watch myself break the little gear thing that is a prick to replace.

Good thinking?


Well, at least its optimistic Laughing

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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Oct 08, 2016 9:04 am Reply with quote Back to top

Fuck me.

I thought I'd have a go and put the cams back in to get a few more parts off the bench. I went to turn the crankshaft to line up the marks on the timing unit and the poofter only turns a quarter turn and then locks up. I'm now thinking I should have checked the engine turns over a bit earlier on in the piece.

Bummer
 
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genesound
Red CB1100F
Red CB1100F



Joined: Feb 20, 2006
Posts: 11930
Location: Studio City, California

PostPosted: Sat Oct 08, 2016 4:00 pm Reply with quote Back to top

Maybe the A cam chain is stuffed in the bottom. It happens. Just pull up on it and gently move the crank back and forth until it unwads and comes up.

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We don\'t see things as they are
we see things as we are

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12.9 Cam Holder Bolts

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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Oct 08, 2016 6:21 pm Reply with quote Back to top

I wish it was the cam chain. I hold it up with one hand and turn the engine with the other while shinning a head torch down to the crankshaft and the chain is not bunched up.

This engine makes me sad.
Scott
 
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thx113
Friend of the Board
Friend of the Board



Joined: Apr 23, 2005
Posts: 3523
Location: Western Australia

PostPosted: Sat Oct 08, 2016 6:48 pm Reply with quote Back to top

I know it sounds stupid, but is it in gear?

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Running 0.06mm to 0.09mm valve clearances since 1983 and proud of it.
CB750 FB
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genesound
Red CB1100F
Red CB1100F



Joined: Feb 20, 2006
Posts: 11930
Location: Studio City, California

PostPosted: Sat Oct 08, 2016 7:38 pm Reply with quote Back to top

I've been fooled by thinking the cam chain wasn't fouled before, even though it was. Just sayin.

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we see things as we are

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scottx
Silver CB750F
Silver CB750F



Joined: May 15, 2012
Posts: 733
Location: Sydney Australia

PostPosted: Sat Oct 08, 2016 10:51 pm Reply with quote Back to top

thx113 wrote:
I know it sounds stupid, but is it in gear?


Fair question for sure. I've been known to over look the obvious, but I checked that it was in neutral. I put the cases back together in neutral so then I clicked it down one into first and then back up into neutral. I have now gone up a few gears and can't get it back down to neutral.
 
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