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 Re: Another 95 SR Broken Crank Bolt - Mine
[Re: JohnnyBfromPeoria]
#1054160
04/03/13 04:37 AM
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Joined: Jan 2002
Posts: 6,134
Trail Leader
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You rock Karl! <img src="/forums/images/graemlins/kewl.gif" alt="" />
1999 Montero SAS'd on Kings and stuff
1998 Montero trying to get a V8 Swapped
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: TOASTY]
#1054161
04/03/13 06:22 AM
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Joined: Dec 2009
Posts: 305
Mudrunner
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Glad to hear Karl saved the day! Of course, if it's Johnny's crooked drilling that lead to the holdup, then perhaps I should be the one to install the Time-Sert (I know, I mistakenly called it a Thread-Sert in a previous post). It worked like a charm for me, but then I made sure it was COMPLETELY straight before any cutting at all!
'95 Montero SR 3.5L, Trail Gear Sliders, Rugged Ridge XHD Front Bumper, 33x12.5 Duratracs, much more in the works....
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: Dylan]
#1054162
04/03/13 03:36 PM
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Joined: Jan 2004
Posts: 918
Rock Warrior
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Dylan, Johnny is going to try using what is left of the threads, he has a couple of option. If that fails than your time-serts will be the last resort. Once you drill for the time-serts there is no going back.
99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: motero]
#1054163
04/03/13 04:34 PM
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Joined: Jun 2002
Posts: 6,211
OP
Trail Leader
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I want to be able to reach the threads left undamaged deeper in the crank bore. I could try to get a bolt about 20mm (5/8") longer. I could try having a machine shop bore a recess into the stock washer so the stock bolt sits a bit closer to the harmonic balancer, but that doesn't get me 20mm.
I reckon that the stock bolt probably isn't harder than grade 8, as any harder might risk breaking the crank snout instead of snapping itself. It would be pretty straightforward to find a longer bolt in grade 8, but the head design wouldn't be the same.
Decisions.
John B.
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: JohnnyBfromPeoria]
#1054164
04/03/13 07:28 PM
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Joined: May 2001
Posts: 4,079
Roll Me Over
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if you find another bolt that isn't the mitsu style design you could always just make sure to buy a new one with every timing belt change, to cover your butt from another breakage.
89 2 dr turbo diesel
89/88 "Backwoods sas"
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: lordtrunks]
#1054165
04/04/13 04:18 AM
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Joined: Jun 2002
Posts: 6,211
OP
Trail Leader
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This has gotten even more ridiculous. I'd pretty much forgotten about the drift pin that locates the clocking of the harmonic balancer on the crank until this evening. Well, it's sheared off flush with the crank snout. And it's made of some kind of super hard steel that my unused left handed drill bits barely touch. I can't believe this...
I located a grade 8 bolt at Ace hardware that's exactly 20mm longer than the stock one. It may be too long, however. I threaded it in the crank all the way and tightened it a little with a socket, but I think there's just a bit too much bolt sticking out for it the be able to clamp the H.B. tightly. I'll go back again tomorrow to see if they have a slightly shorter one.
John B.
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: JohnnyBfromPeoria]
#1054166
04/04/13 05:17 AM
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Joined: Jan 2004
Posts: 918
Rock Warrior
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You need some specification on bolt hardness, will a grade 8 bolt even hold 120ft-lb or what ever the proper torque is. And to get as many threads as possible but still clamp. Some careful measuring and bolt customizing are in order.
I have a timing belt sprocket just sitting here with all three pins nice and straight and whole. $1000 limited time only.
Times up.
99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: motero]
#1054167
04/04/13 05:38 AM
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Joined: Jan 2004
Posts: 918
Rock Warrior
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Fastenal specs Look at page A-8, Grade 8.8 metric 14 mm bolt only good to 103 ft-lbs. I would get a 10.9 bolt. The finer threads of the crank, than what is listed, might make a 8.8 just barely strong enough. From what fasteddy says, you are going to want to use the stock washer, it has special springiness properties.
99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: JohnnyBfromPeoria]
#1054168
04/04/13 11:42 AM
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Joined: Feb 2000
Posts: 3,269
Roll Me Over
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This has gotten even more ridiculous. I'd pretty much forgotten about the drift pin that locates the clocking of the harmonic balancer on the crank until this evening. Well, it's sheared off flush with the crank snout. And it's made of some kind of super hard steel that my unused left handed drill bits barely touch. I can't believe this...
I located a grade 8 bolt at Ace hardware that's exactly 20mm longer than the stock one. It may be too long, however. I threaded it in the crank all the way and tightened it a little with a socket, but I think there's just a bit too much bolt sticking out for it the be able to clamp the H.B. tightly. I'll go back again tomorrow to see if they have a slightly shorter one.
John B. The pin is part of the sprocket not the crank. Replace the sprocket. Check condition of key and replace if necessary.
99 Gen 2.5, fixing blown head gasket
89 SWB- 33's, ARB Front locker, SR rear locker/axle, SR F brakes, winch, WST Offroad Armor all Around, 2.85 Aussie T-case Gears (SOLD)
Sold: (2) 95 SR's, 86 SWB, 90LWB, 91 LWB
-Can Change a timing belt in my sleep..
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Re: Another 95 SR Broken Crank Bolt - Mine
[Re: justice]
#1054169
04/04/13 09:31 PM
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Joined: Feb 2001
Posts: 2,356
Body Damage is Cool
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Are there enough threads left to hold the bolt with stripping out?
Mitsu # 6 - 98 6G72 Montero Sport, Locking Rear Diff, Aisin Manual Hubs, 31x10.5
Mitsu # 7 - 02 6G74 Montero Limited
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