« previous next »
Pages: [1]   Go Down

Author Topic: about to throw in the towel  (Read 1824 times)

0 Members and 1 Guest are viewing this topic.

Offline 5thofhonda

  • Full Member
  • *
  • Posts: 66
about to throw in the towel
« on: June 24, 2015, 02:29:37 PM »
I have two stripped bolts on my 750K3 clutch cover.  I have tried everything.  Extractor, dremel and bigger screwdriver, and most recently JB weld. They won't budge and the JB just snaps with any torque.  I need suggestions.  I do not have a welder, the garage has no electricity, and there is very little material of the heads left.  Is my best bet to take it to a shop, break them loose, reinstall new bolts that I could take off when I get home?
Logged

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,289
Re: about to throw in the towel
« Reply #1 on: June 24, 2015, 02:32:54 PM »
an impact wrench with JIS tips would have been useful from the get-go, but for now. . .
drill the tops off
pull the cover off
turn out the remaining bolt shafts with some vice grips after you've treated the threads with some PB blaster overnight.
« Last Edit: June 24, 2015, 02:34:49 PM by flybox1 »
Logged
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Methix

  • Full Member
  • *
  • Posts: 24
Re: about to throw in the towel
« Reply #2 on: June 24, 2015, 03:01:26 PM »
How far in are you putting the extractor?  When I've had to use extractors before, you have to really drill into the bolt so they can bite.  The fact that you have any of the head left at all sounds like the extractor wouldn't be able to get enough purchase to actually turn the bolt.  I'd drill way into the bolt and really get that extractor in there.  Make sure the tip of the extractor isn't bottoming out at the end of the drilled hole.
Logged
"So it turns out that being an adult is mostly just googling how to do stuff."

The Project Bike - 1973 Honda CB500
The Daily Driver - 2011 Triumph Daytona 675 SE

Offline harisuluv

  • Master
  • *****
  • Posts: 2,009
Re: about to throw in the towel
« Reply #3 on: June 24, 2015, 03:14:53 PM »
Quote from: flybox1 on June 24, 2015, 02:32:54 PM
an impact wrench with JIS tips would have been useful from the get-go, but for now. . .
drill the tops off
pull the cover off
turn out the remaining bolt shafts with some vice grips after you've treated the threads with some PB blaster overnight.


sounds like you are trying to extract the bolts with the cover still on.  As flybox said, no reason to. 
Logged

Offline 5thofhonda

  • Full Member
  • *
  • Posts: 66
Re: about to throw in the towel
« Reply #4 on: June 24, 2015, 04:19:25 PM »
The bolts have very little head left because of the extractors.  Started small and made my way to the largest, stripping all the way. Managed to drill the head off of one.  The other had a bit of slat on it still, so I gave it a whack with my screwdriver and mallet trying to break it off, and it broke loose.  Got it unscrewed with my needle nose.

Cover is off and the one remaining bolt has the PB treatment.  Thank you so much guys.  Now to find something to knock the ear down on this washer....
Logged

Offline wowbagger

  • Not much of an
  • Expert
  • ****
  • Posts: 849
Re: about to throw in the towel
« Reply #5 on: June 24, 2015, 06:36:53 PM »
Go pick up an impact driver. No one ever said, "I wish I never bought this impact driver."

I can guarantee these will not be the last stuck bolts you run into.
Logged

Offline RevDoc

  • Hot Shot
  • ***
  • Posts: 552
Re: about to throw in the towel
« Reply #6 on: June 24, 2015, 09:56:19 PM »
Don't throw in the towel yet...the fun is just starting! ::)

I got this set and it paid for itself on the very first project I tackled after it arrived. Changed the valve seals on my '78 550K which had not been touched since the bike was built. The JIS bits were a god-send! Well worth the investment.

http://shop.rrrtoolsolutions.com/4-Bit-Mechanics-Shop-Impact-Driver-Vessel-2500-RRR4IMPACT.htm
Logged
Dana

'78 CB550K--Angie
'82 CB750 Custom--Eva



As soon as you straddle a bike expect every other driver on the road to suddenly start competeing for the title "Dumbestsonofa#$%*inallNorthAmerica!!"

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,762
  • Bike almost back to the 70's 2015
Re: about to throw in the towel
« Reply #7 on: June 25, 2015, 01:14:24 AM »
This was normal back in the days when I still had the crappy X-bolts, all replaced by Allen heads.
Drill head off completely is quick and easy done when you have done the first and know how to do.
Start with a smaller drill to get a good start in the center of the bolt. Then go bigger and bigger until the drill has same diameter as the head outer dim.  You need a good drilling machine and sharp drills.

Use together with vacuum cleaner when drilling inside like the 4 X-bolts inside the gear shifter cover, alu stuff holing an axis.
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline 5thofhonda

  • Full Member
  • *
  • Posts: 66
Re: about to throw in the towel
« Reply #8 on: June 25, 2015, 07:09:20 AM »
The one remaining bolt is seized pretty good. Vice grips were just pulling threads off.  Going to charge my dremel and see about making a new slot in it for a screwdriver.  Or would double nut work?
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,234
  • Saver of unloved motorcycles.
Re: about to throw in the towel
« Reply #9 on: June 25, 2015, 07:33:29 AM »
 If you can double nut it, do that. After putting the nuts on, tap on the end with a hammer just enough to shock it loose.
 I like to hold a little torque on it and then tap, usually it pops right out.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline wowbagger

  • Not much of an
  • Expert
  • ****
  • Posts: 849
Re: about to throw in the towel
« Reply #10 on: June 25, 2015, 07:39:29 AM »
Also, put a wrench on the double but and add a bit of torque while you hit the head with the hammer. Old school impact driver.
Logged

Offline lrutt

  • Expert
  • ****
  • Posts: 916
Re: about to throw in the towel
« Reply #11 on: June 25, 2015, 07:49:11 AM »
punch and hammer almost always works for me when all else fails.
Logged
06 Harley Sporster 1200C, 06 Triumph Scrambler, 01 Ducati Chromo 900, 01 Honda XR650L, 94 Harley Heritage, 88 Honda Hawk GT, 84 Yamaha Virago 1000, 78 Honda 750K w/sidecar, 77 Moto Guzzi Lemans 850, 76 Honda CB750K, 73 Norton 850, 73 Honda Z50, 70 & 65 Honda Trail 90, 70 & 71 Triumph 650s, 65 Honda 305 Dream, 81 Honda 70 Passport, 70 Suzuki T250II, 71 Yamaha 360 RT1B, 77 BMW R75/7, 75 Honda CB550K, 70 Honda CT70

Offline Duanob

  • Bold Timer
  • Old Timer
  • ******
  • Posts: 4,011
  • Gotcha!
Re: about to throw in the towel
« Reply #12 on: June 25, 2015, 08:14:03 AM »
Now that you've got the cover off the bolts are gone, buy allen heads and be done with the JIS. Start replacing all the screws with allen heads you won't regret it later.
Logged
"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)

Offline 5thofhonda

  • Full Member
  • *
  • Posts: 66
Re: about to throw in the towel
« Reply #13 on: June 25, 2015, 09:36:57 AM »
I bought 10 new stainless Allen bolts last week.  This is the most expensive clutch replacement I've ever done, also the longest. It's taken over a week so far, and the clutch nut socket won't be here til Monday at the earliest.
Logged

Offline dave the welder

  • dave the welder
  • Hot Shot
  • ***
  • Posts: 500
Re: about to throw in the towel
« Reply #14 on: June 25, 2015, 12:07:19 PM »
a  little dab of antiseize willhelp
Logged
don't buy it build it

Offline Powderman

  • Master
  • *****
  • Posts: 2,462
    • Creative Candy Powder Coating
Re: about to throw in the towel
« Reply #15 on: June 25, 2015, 05:59:43 PM »
Quote from: dave the welder on June 25, 2015, 12:07:19 PM
a  little dab of antiseize willhelp
I think anyone who doesn't automatically use anti seize on a bolt they just spend an hour or more trying to remove is just not using common sense. I never have enough anti seize or LocTite around.
Logged

Offline 5thofhonda

  • Full Member
  • *
  • Posts: 66
Re: about to throw in the towel
« Reply #16 on: June 26, 2015, 09:47:21 AM »
Quote from: Powderman on June 25, 2015, 05:59:43 PM
Quote from: dave the welder on June 25, 2015, 12:07:19 PM
a  little dab of antiseize willhelp
I think anyone who doesn't automatically use anti seize on a bolt they just spend an hour or more trying to remove is just not using common sense. I never have enough anti seize or LocTite around.

Exactly, haha.  I need to go buy some, but it'll probably be at least another week before this damn clutch job is done.
Logged

Offline riffman12

  • Hot Shot
  • ***
  • Posts: 388
Re: about to throw in the towel
« Reply #17 on: June 29, 2015, 10:23:42 AM »
if all else fails, hire a welder to come and tack a nut on there
Logged
Pages: [1]   Go Up
« previous next »