Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 06-19-2011, 10:45 AM
NDL NDL is offline
Liking the Ford Ranger Forum
 
Join Date: Feb 2010
Posts: 27
Default :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

Hey All!

I have a 2001 Ranger, with the 2.5 Lima engine. I am going to do my second tuneup (first one was done at 80k). Seems that I can't get a handle on the original equipment plugs, which are half thread plugs.

Can I use full thread plugs, instead of the original half thread? If so, are there any issues I need to be aware of? I won't be using a torque wrench; I usually can "feel" when a plug is fully in, and firmly seated - so If I use the full thread plugs, how will I know that they are firmly seated - so I don't over tighten them?

Anyone use NGK, or Bosch plugs? I'd like to give them a try (I have been using Autolite...)

Thanks in advance for your help and suggestions!
Reply With Quote
  #2  
Old 06-19-2011, 12:53 PM
Huck Huck is offline
13mm Guru
 
Join Date: Apr 2011
Posts: 115
Send a message via Skype™ to Huck
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

I just picked up Bosch Super Pro's. Copper w/ Yiddium coat. Full threads. Had no problem with them.
__________________
1992 XLT.
2.3 Eight plug w/5 speed
High flow filter with functional scoop.
http://www.fuelly.com/smallsig-us/70702.png
Reply With Quote
  #3  
Old 06-21-2011, 09:54 AM
NDL NDL is offline
Liking the Ford Ranger Forum
 
Join Date: Feb 2010
Posts: 27
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

Thanks for your feedback! Did you have a problem 'overtightening' the plugs? I'm worried that a 'full thread' plug might overextend itself in the head/combustion chamber.
Reply With Quote
  #4  
Old 06-21-2011, 10:02 AM
dixie_boysles dixie_boysles is offline
5.Oh All the way

 
Join Date: May 2009
Posts: 6,581
Send a message via Yahoo to dixie_boysles
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

not sure what you mean, but get the right sparkplugs, your truck will love you for it
__________________
2014 F150 SuperCrew XLT 4x4
275/65/17 Falken Wildpeak AT3W | Shorty Antenna | Tinted Windows | ProClip Phone Mount |5.0 v8 |Tow Package | Oxford White


Sold/Totaled: 2006 Ranger XLT 2D SuperCap 4x4 Torch Red
15x8 Pacer 164P Polished Wheels | 31x10.50 BFG ATs | Level II Tow Hooks | FX4 Red Insert Seats
Tinted Windows | 6000K HIDs | Kobalt Low Profile Toolbox | Pioneer Speakers
Reply With Quote
  #5  
Old 06-21-2011, 10:38 AM
NDL NDL is offline
Liking the Ford Ranger Forum
 
Join Date: Feb 2010
Posts: 27
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

In other words, unless I am mistaken, a spark plug will screw in only as far as the threads go. If I use a full thread plug (instead of the factory spec half-thread), will the extra threads on the full thread plug cause the plug to go deeper into the head - or will the full thread plug screw in just like the half thread plug?
Reply With Quote
  #6  
Old 07-17-2011, 12:36 PM
NDL NDL is offline
Liking the Ford Ranger Forum
 
Join Date: Feb 2010
Posts: 27
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

Anyone else? I cannot find half thread plugs *anywhere* including the dealer.
Reply With Quote
  #7  
Old 03-05-2012, 03:02 PM
bentorl bentorl is offline
Learning to use the forums
 
Join Date: Mar 2012
Posts: 1
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

Yes, you can interchange full thread plugs with half thread plugs. I replaced the full thread Champions in my 4-cyl 8 plug Lima with the original spec Autolite plugs and they both installed and operated fine.
Reply With Quote
  #8  
Old 03-06-2012, 06:36 AM
4b316 4b316 is offline
Ford Tough
 
Join Date: Nov 2010
Posts: 293
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

They seat against the bottom of the plug base,not the threads.Use the autolites
Reply With Quote
  #9  
Old 03-06-2012, 06:56 PM
Lalogga Lalogga is offline
Old Skool
 
Join Date: Jan 2012
Posts: 178
Default Re: :::Can I Use Full Thread Spark Plugs Instead Of Half Thread?

Autolite AP764 half thread from rockauto.com for 2 bucks a piece. I found motorcraft oem half thread plugs last week at advanced auto. You are correct...dealer seems to be phasing out the 1/2 thread and replacing them with full. Get them while you can.
__________________
1998 2.5 Ranger XLT 2wd...with a cap
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Triton spark plug re-thread kits?? Elwood Other Engine Tech 1 05-24-2011 04:09 PM
spark plugs CLOS99 3.0 Vulcan Tech 3 07-10-2010 07:35 PM
Spark plug thread repair hunterranger 3.0 Vulcan Tech 2 03-23-2010 12:01 PM
Spark Plugs RangerLuc General Ford Ranger Discussion 27 02-15-2010 09:44 AM
spark plugs big green General Ford Ranger Discussion 5 11-06-2009 08:21 PM