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Best way to loosen tight hex bolts
- Archiddeon
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27 Jun 2011 16:09 #459726
by Archiddeon
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
Best way to loosen tight hex bolts was created by Archiddeon
I'm trying to get the cap off the side of my GPZ 550 engine to hand turn the crank and see how the pistons feel, but the Allen-type hex bolts are proving stubborn. Got them hosed down with some PB Blaster, but wondering what the best approach is to loosen them while minimising the risk of stripping/rounding the inside of the heads?
I suppose from worst to best would be Allen key - hex socket - impact wrench with impact hex socket? How would normal hex sockets versus the rounded-head ones compare?
Thanks!
I suppose from worst to best would be Allen key - hex socket - impact wrench with impact hex socket? How would normal hex sockets versus the rounded-head ones compare?
Thanks!
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
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- andy9802gt
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- If it tastes that good, eat it yourself.
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27 Jun 2011 18:45 #459765
by andy9802gt
'78 KZ1075 LTD
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm
Replied by andy9802gt on topic Best way to loosen tight hex bolts
I assume you're talking about Allen head bolts, in which case they are probably stainless, and they probably didn't have anti-seize applied to them before they were put in. PB Blaster and patience is what it going to take but a little heat never hurt anyone either.
'78 KZ1075 LTD
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm
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- GPz550D1
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27 Jun 2011 18:51 #459767
by GPz550D1
1981 KZ550-D1
Replied by GPz550D1 on topic Best way to loosen tight hex bolts
I just use a regular Allen wrench to take off side covers on my Gpz550. You might tap lightly on the bolts with a hammer to break loose the corrosion that may keeping them tight. I was trying to take the Allen bolts loose on my forks this weekend and could not do it with my wrench, so I purchased an Allen socket.
1981 KZ550-D1
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- Motor Head
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- FIX UP YOUR BIKE RIGHT AND CHEAP
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27 Jun 2011 19:00 #459773
by Motor Head
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Replied by Motor Head on topic Best way to loosen tight hex bolts
When they are stuck, take a flat nosed punch that fits inside the Allen. Then give it some firm hits with a hammer. Instant impact wrench.
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
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- Archiddeon
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27 Jun 2011 21:31 #459827
by Archiddeon
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
Replied by Archiddeon on topic Best way to loosen tight hex bolts
Awesome I wasn't looking forward to forking out green for a set of impact hex sockets Will probably just invest in some good quality allen keys or hex sockets ... don't want to screw up the bolts due to poor quality tools
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
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- Archiddeon
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29 Jun 2011 01:35 #460074
by Archiddeon
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
Replied by Archiddeon on topic Best way to loosen tight hex bolts
In terms of anti-sieze compound ... can anyone recommend a good brand to use? Also, which bolts should it be applied to and which should have locking compound on them? I know in the service manual it specifically states that some should have locking compound ... all others anti-sieze?
Thanks
Thanks
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
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- Archiddeon
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01 Jul 2011 18:53 #460525
by Archiddeon
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
Replied by Archiddeon on topic Best way to loosen tight hex bolts
I LOVE PB Blaster! For two days I just went out and sprayed almost every bolts on the bike with a little. Today I took a wrench and hex socket and undid virtually everything with ease Awesome stuff!
Any advice on anti-sieze an locking compound brands?
Any advice on anti-sieze an locking compound brands?
1983 GPz 550
1985 Honda CH150 Scooter
1995 Suzuki GS500E
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- MFolks
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01 Jul 2011 19:17 #460530
by MFolks
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
Replied by MFolks on topic Best way to loosen tight hex bolts
I use a brand made by Permatex, it's silver type that I use on the first few threads of sparkplugs,axles of the wheels(a little goes a long way, so a thin film works best.) It comes in a 1 oz or 28 gram squeeze tube available at most auto parts stores.
It prevents seizing or galling,prevents corrosion and is good for high temperatures 1600 F (870 C).
It prevents seizing or galling,prevents corrosion and is good for high temperatures 1600 F (870 C).
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- riverroad
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- 1980 1000LTD B4
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11 Jul 2011 10:12 #462219
by riverroad
Replied by riverroad on topic Best way to loosen tight hex bolts
I second the Permatex antisieze compound. We use it on F-15s all ove the place. But for penetrating oil, we use a brand called Kroil. And it is some amazing stuff, especially on stainless bolts in Aluminum castings and forgings, plus monel, titanium, berylium, you name it.
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- 650ed
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11 Jul 2011 10:16 #462220
by 650ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Replied by 650ed on topic Best way to loosen tight hex bolts
+1 on the Kroil! It really works! Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Equinoxe
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19 Aug 2011 17:56 #470099
by Equinoxe
KZ650 F2 1981
Replied by Equinoxe on topic Best way to loosen tight hex bolts
I personally like to use a torx-bit (which I hammer in first) and loosen it then with an impact driver.
The torx bit is a bit bigger, but has some sharp edges, ideal to create extra grip.
(BTW use penetrating oil before, and let it sit overnight before you even try..)
(this trick works on metric alan bolts, no idea how it works on others)
The torx bit is a bit bigger, but has some sharp edges, ideal to create extra grip.
(BTW use penetrating oil before, and let it sit overnight before you even try..)
(this trick works on metric alan bolts, no idea how it works on others)
KZ650 F2 1981
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- mark1122
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- Keep twisting it
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19 Aug 2011 19:18 #470129
by mark1122
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
Replied by mark1122 on topic Best way to loosen tight hex bolts
try mixing acetone with trany fluid 50/50 works great for stuborn bolts.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
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