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Dec 30th, 2023
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 Sparkplugs
#1665947
10/13/07 12:16 PM
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Joined: Nov 2006
Posts: 9
buddog
OP
Green Horn
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OP
Green Horn
Joined: Nov 2006
Posts: 9 |
What is the torque specifications for sparkplugs on a 1986 johnson 150 hp. Thanks.
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Re: Sparkplugs
[Re: buddog]
#1665974
10/13/07 12:33 PM
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Joined: May 2003
Posts: 12,334
PGR Mike
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 12,334 |
Finger tighten, then use a socket and then give it another 1/4 of a turn. I've never used a torque wrench on spark plugs, just go by feel.
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Re: Sparkplugs
[Re: PGR Mike]
#1665999
10/13/07 12:52 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
here's what the manual says about spark plug torque.
18-20 ft. lbs.
TORQUE VALUE
IF THE TORQUE VALUE IS TOO HIGH, THE HEAT WILL DISSIPATE TOO RAPIDLY. CONVERSELY, IF THE TORQUE VALUE IS TOO LOW, HEAT WILL NOT DISSIPATE FAST ENOUGH.
The torque value given is good for v4,v6, and v8 units. ALWAYS, use a new gasket and wipe the seats in the cylinder head clean. The gasket must be fully compressed on clean seats to complete the heat transfer process and to provide a gas tight seal for the cylinder.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Sparkplugs
[Re: steve@S2Marine]
#1666714
10/13/07 11:14 PM
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Joined: Feb 2007
Posts: 4,379
bassaholic022
TFF Team Angler
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TFF Team Angler
Joined: Feb 2007
Posts: 4,379 |
I just put mine in til there tight.
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Re: Sparkplugs
[Re: bassaholic022]
#1672853
10/16/07 05:04 PM
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Joined: Aug 2007
Posts: 31
Don Swindall
Outdoorsman
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Outdoorsman
Joined: Aug 2007
Posts: 31 |
I always was told to tighten them until they strip and back off 1/2 round.(just kidding)
Treat everyone you come in contact with as a friend you haven't meet yet.
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Re: Sparkplugs
[Re: bassaholic022]
#1673478
10/16/07 09:58 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
I just put mine in til there tight. that's what i used to do too. However, i can feel when the plugs gasket start to seat, then i tighten just a bit more. however i must give the "proper" information. which is what i wrote above. 18-20 ft. lbs.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Sparkplugs
[Re: steve@S2Marine]
#1673705
10/16/07 11:57 PM
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Joined: May 2003
Posts: 12,334
PGR Mike
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 12,334 |
If you turn wrenches long enough, you get a feel for how much torque you are putting on the wrench. If you're not sure, buy a torque wrench. It will save you lots of time and money later on.
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Re: Sparkplugs
[Re: PGR Mike]
#1674709
10/17/07 01:29 PM
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Joined: Dec 2003
Posts: 3,180
2-stroke
TFF Team Angler
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TFF Team Angler
Joined: Dec 2003
Posts: 3,180 |
Michael that brings up a question I've wondered about - just how important is a torque wrench for your average do-it-yourselfer - I know better than to do a cylinder head or something without one, but what about stuff like attaching the lower unit, assembling/installing carbs & waterpumps, prop nuts, heck the manual even has torque specs for the airbox. Am I setting myself up for a major malfunction down the road? And is there a particular type or brand of torque wrench that is accurate enough yet economical? Wouldn't have to be as durable as yours - wouldn't get that much use.
thanks!
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Re: Sparkplugs
[Re: 2-stroke]
#1674969
10/17/07 03:10 PM
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Joined: Jul 2004
Posts: 217
Grayone
Outdoorsman
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Outdoorsman
Joined: Jul 2004
Posts: 217 |
On the subject of plugs, how long should you run a set of plugs,a year,2 years,till they quit firing? The ones with the circle head make it hard to tell if it's wore out. I know they are cheap for the good that they do,so maybe twice a year if you buy them at Wall Mart.
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Re: Sparkplugs
[Re: 2-stroke]
#1675019
10/17/07 03:33 PM
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Joined: Oct 2006
Posts: 104,169
Bigbob_FTW
Big Sprocket Bob
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Big Sprocket Bob
Joined: Oct 2006
Posts: 104,169 |
Michael that brings up a question I've wondered about - just how important is a torque wrench for your average do-it-yourselfer - I know better than to do a cylinder head or something without one, but what about stuff like attaching the lower unit, assembling/installing carbs & waterpumps, prop nuts, heck the manual even has torque specs for the airbox. Am I setting myself up for a major malfunction down the road? And is there a particular type or brand of torque wrench that is accurate enough yet economical? Wouldn't have to be as durable as yours - wouldn't get that much use.
thanks! I bought a nice one from sears. It wasn't cheap, but not that bad. I think its real important given that boat motors have lots of aluminum in them. They are very easy to strip, and if you go with the factory specs, you can't go wrong. I don't use them on everything (airbox for example), but on most things. For the others, i use no bigger than a 1/4" drive. You really can't get too much torque that way unless you really try. my $.02
![[Linked Image]](https://texasfishingforum.com/forums/pics/usergals/2017/07/full-20284-169975-biyl8lail.jpg) ![[Linked Image]](https://texasfishingforum.com/forums/pics/usergals/2017/07/full-20284-169974-image_preview.jpg)
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Re: Sparkplugs
[Re: Grayone]
#1675024
10/17/07 03:34 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
that's a tough call.
Back when i was fishing alot of tournaments, etc. I would replace my plugs every 3 months. every week or two, i'd pull them out and clean them with carb cleaner and a wire brush.
rule of thumb should be to replace every year, when you do scheduled maintance. such as lower unit oil,fuel filter, water pump(2yrs), etc.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Sparkplugs
[Re: steve@S2Marine]
#1678570
10/18/07 10:47 PM
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Joined: Nov 2002
Posts: 4,439
Gamblinman
TFF Team Angler
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TFF Team Angler
Joined: Nov 2002
Posts: 4,439 |
Steve,
I'm running the NGK iridiums in the 3.0 Liter. No more fouling from idling long distances and they've been in the motor for two years.
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Re: Sparkplugs
[Re: Gamblinman]
#1679481
10/19/07 11:38 AM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
Steve,
I'm running the NGK iridiums in the 3.0 Liter. No more fouling from idling long distances and they've been in the motor for two years.
I bethcya my bridgeport could foul them,if i idled more than 100feet. LOL. this mota knows two things, start up, and haul butt..
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Sparkplugs
[Re: steve@S2Marine]
#1690834
10/24/07 11:32 PM
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Joined: Oct 2007
Posts: 10
Arsonist
Green Horn
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Green Horn
Joined: Oct 2007
Posts: 10 |
Better stick to the ol' ql77cc champions>>
Last edited by Arsonist; 10/24/07 11:32 PM.
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Re: Sparkplugs
[Re: 2-stroke]
#1690949
10/25/07 12:43 AM
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Joined: Apr 2007
Posts: 1,984
Michial Thompson
Extreme Angler
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Extreme Angler
Joined: Apr 2007
Posts: 1,984 |
Michael that brings up a question I've wondered about - just how important is a torque wrench for your average do-it-yourselfer - I know better than to do a cylinder head or something without one, but what about stuff like attaching the lower unit, assembling/installing carbs & waterpumps, prop nuts, heck the manual even has torque specs for the airbox. Am I setting myself up for a major malfunction down the road? And is there a particular type or brand of torque wrench that is accurate enough yet economical? Wouldn't have to be as durable as yours - wouldn't get that much use.
thanks! Knowing WHEN you NEED to use a torque wrench is the most important thing. For most of the maintenance that you'll do yourself you probably will never need one. You hit on probably the most important items to use the toque wrench on. You can get a good torque wrench for $50. They aren't one of the tools that have to be absolutely accurate. The main thing you care about is that they are consistant.
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