Author Topic: If I were to believe in a higher power...  (Read 1844 times)

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Offline paulages

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If I were to believe in a higher power...
« on: September 11, 2010, 11:42:04 PM »
I would believe that something was trying to keep me from riding my honda this summer.

First, there was an oil leak in the block that I couldn't seem to fix. I disassembled the engine and found that in the process of boring the cylinder block out for larger sleeves, I hit porous casting. Then, after having sent the block off to NW porostiy sealing to have it sealed I discovered that my piston to wall clearances were too large after re-installing the sleeves in the block. Soos was kind enough to trade pistons with me for 3rd over where I was already (+5.5mm). Then I found that the sleeves were a bit proud of the block, so I sent it to the machine shop to have them pressed in and the surface re-machined. I reinstalled, only to have a bad head gasket leak.

So... I took the block back to the machine shop and recognizing the poor work of one of their employees, they re-surfaced both the head and deck for free, and I reassembled. ...Except that one of the holes in the case for the cylinder bolts (unique to the 650) stripped. I pulled the block and installed inserts in all of the holes, and used 6 of the APE cb500/550 studs that would fit, using the 650 bolts for the rest. I got it together again, and it ran like a bat out of hell, with no leaks! ... but developed a louder-than-usual cam chain noise.

Tonight, I disassembled and found that the tensioner blade had come apart, effectually creating no tension on the chain. Good thing, right? Sure... except that one of the APE studs snapped off at the top threads on the third torquing sequence, at 15 ft/#. They're good to 22.

I pulled the head and block and started to remove the stud, figuring I'd just use a 650 bolt in it's location instead. It broke loose and began turning out... and then snapped off in the case at the base.  :'(

I really think something is trying to keep me off of this bike. either that or I have really bad luck this year.

 :-[
paul
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1972 NORTON Commando Combat
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Offline Hush

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Re: If I were to believe in a higher power...
« Reply #1 on: September 11, 2010, 11:48:41 PM »
Dang mate, I would've given up long ago and chucked in another motor.....hopefully the hands of fate will swing in your direction eventually.
I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline Hasenkopf

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Re: If I were to believe in a higher power...
« Reply #2 on: September 12, 2010, 12:15:01 AM »
I  call this sort of thing the  "cosmic joker"
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Offline turboguzzi

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Re: If I were to believe in a higher power...
« Reply #3 on: September 12, 2010, 12:28:09 AM »
my condolences,

are you sure your torque wrench is calibrated?

I overtorque my stock 500 studs and never had trouble

last, dont know how much yor cam to crank distance has changed after all the milling, but I eventually had to move over a cbr600 blade tensioner, the blade ran out of adjustment......

Good luck!

TG

Offline paulages

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Re: If I were to believe in a higher power...
« Reply #4 on: September 12, 2010, 12:43:15 AM »
my condolences,

are you sure your torque wrench is calibrated?

I overtorque my stock 500 studs and never had trouble

last, dont know how much yor cam to crank distance has changed after all the milling, but I eventually had to move over a cbr600 blade tensioner, the blade ran out of adjustment......

Good luck!

TG

Yeah man, it's been trying times...

I don't know that my torque wrench is calibrated well, but i suspect that it's not the problem. I should re-calibrate it though. None of the other studs/bolts felt funny at all, and over time you develop a sense of when the torque feels right... it really didn't feel like it was over-torquing, it just gave.

Originally I had .003" milled off of the head, and now .007" between the head and block. I think I'm fine now, but may have to consider your route if I need any more surfacing. How much did you remove?

paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline Retro Rocket

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Re: If I were to believe in a higher power...
« Reply #5 on: September 12, 2010, 03:09:01 AM »
I've had a heavy duty stud snap as well Paul....it happens....or should that be ...#$%* happens..... ;)

Mick
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Offline bwaller

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Re: If I were to believe in a higher power...
« Reply #6 on: September 12, 2010, 04:28:03 AM »
I'm not a heathen, but can't help with the higher power either.

I've snapped a HD stud before too if it's any consolation.

I think you're in the midst of developement work here Paul, one step forward.....you know the rest.

Sorry for your grief, but maybe say your prayers tonight anyway.

Offline fmctm1sw

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Re: If I were to believe in a higher power...
« Reply #7 on: September 12, 2010, 06:56:56 AM »
This is exactly why I have two bikes...
Quote from: 754
Dude is that a tire ? or an O-ring..??

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This is not a #$%* on my vacuum gauges thread
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Offline bluezboy

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Re: If I were to believe in a higher power...
« Reply #8 on: September 12, 2010, 07:03:32 AM »
This is exactly why I have two bikes...


 Man I  know how you feel, having two bikes is starting to sound like a great idea, save my old girl for weekends and get a newer, sportier daily rider that I know won't strand me back and forth to work!

Offline paulages

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Re: If I were to believe in a higher power...
« Reply #9 on: September 12, 2010, 08:44:52 AM »
I do have two bikes! however, the other is a norton.  ::)

the good thing is, the leaks seem to be sorted. I know the best route here, I just dread pulling it all apart again.
paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: If I were to believe in a higher power...
« Reply #10 on: September 12, 2010, 08:49:06 AM »
Just think, it that was a 750 and you didn't have one of Gordon's frame kits in it...................

These are things that make you the pro that you are  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline paulages

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Re: If I were to believe in a higher power...
« Reply #11 on: September 12, 2010, 09:05:39 AM »
Just think, it that was a 750 and you didn't have one of Gordon's frame kits in it...................

These are things that make you the pro that you are  ;)

If this was a 750, I would have installed one of Gordon's frame kits off the bat.  ;)

paul
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Offline bryanj

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Re: If I were to believe in a higher power...
« Reply #12 on: September 13, 2010, 09:48:11 PM »
Paul, just thank god its not the Norton you are working on or the men with the funny white jacket and padded cell would have took you away already
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Offline paulages

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Re: If I were to believe in a higher power...
« Reply #13 on: September 13, 2010, 10:32:23 PM »
Paul, just thank god its not the Norton you are working on or the men with the funny white jacket and padded cell would have took you away already

believe me, that one drives me crazy too.  ;)
paul
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Offline flybox1

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Re: If I were to believe in a higher power...
« Reply #14 on: September 14, 2010, 08:04:33 AM »
so THAT'S where the magical ass rape fairy has been hiding!!!  :D
time for some good luck vibes in your garage!
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Offline faux fiddy

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Re: If I were to believe in a higher power...
« Reply #15 on: September 15, 2010, 04:15:33 AM »
I guess you know to use a small bottle brush and solvent in the holes and put a couple drops of oil or ATF on the threads before you tighten 'em...
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Offline paulages

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Re: If I were to believe in a higher power...
« Reply #16 on: September 15, 2010, 11:13:00 AM »
I guess you know to use a small bottle brush and solvent in the holes and put a couple drops of oil or ATF on the threads before you tighten 'em...

yes. the stud first broke at the TOP threads... then the bottom. besides, it was threaded in to a brand new steel insert.
paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R