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Spark plug socket for headers.

34K views 20 replies 17 participants last post by  nolimitpkr  
#1 · (Edited)
A recent thread had several posters describing their tricks to changing spark plugs. I intended to add my two cents, but decided to wait for a picture. Well, can't find the original thread, so started my own.

Take a cheap spark plug socket, the kind with a rear external hex for a 3/4" wrench (some are longer than others, choose the shortest). With the inner rubber removed, determine how much can be ground off the plug side, yet still engage the plugs hex. Then flat grind the end accordingly, keeping the opening square. In my paticular case, I never use a ratchet, so the plug terminal can extend all the way into the sockets 3/8" square drive opening if desired. Next, viewing the plug opening, grind a notch the width of one of the six hex flats, approximately 1/2" deep. This allows an angled approach to the plug, as the notch can staddle the ceramic insulator. I also bevelled the outer diameter on the plug end.

This will reduce the clearance required to slip the socket over plug. If socket strength is a concern, then you obviously over torque your spark plugs.
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Here's mine compared to a standard Craftsman.

Oh yeah, I also ground down the open end of a 3/4" combination wrench. I previously had a similarly altered 3/4" stubby wrench, but left it and the socket under the hood once. I heard them hit the ground while turning a corner, some 7 miles down the road. After work, I returned to the intersection, but was onlty able to recover the socket.
 

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#12 ·
Been to several shows over the winter and looked for one of those "trick" plug sockets. Probably just make my own now.
This is what I use. While Rowdy's invention is all you'll need for some engines, it wouldn't take care of all 8 plugs for mine.

http://www.compperformancegroupstor...nt.mvc?Screen=PROD&Store_Code=PH&Product_Code=POW301150&Category_Code=SPARKPLUG

5/8" Spark Plug Socket
PART #POW301150
$48.38
Quantity:
None in your basket

DESCRIPTION:
These header sockets are extemely high-quality professional tools that can make your life much easier. Fully CNC machined from 15-5 Stainless Steel Aircraft Alloy and properly heat-treated, these ingenious sockets will sneak into virtually any cylinder head/exhaust header combination. The internal hex is EDM'd, which means it is electronically cut and built to give a lifetime of use.



I have every imaginable tool in spark plug sizes. Long wrenches, wrenches with offsets, short wrenches, sockets, sockets with wobble joints, deep sockets, super-Big blocks aren't usually near as bad about this.... I'm sure all the SBC guys know what I mean.

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Not so with all big blocks. If you have Hooker super comp headers with 2 1/8" diameter primary tubes on a Big block, it will be just as bad as just about any small block (if not worse) to get at the sparkplugs. :yes:
 
#4 ·
Great....I could have used this last week. Oh well. Glad you posted. This is exactly what I did except without the notch. I am going to notch though. That is a great idea. I really didn't think there was any way to get my #8 spark plug out but with this combo it was a piece of cake.
 
#5 ·
I have every imaginable tool in spark plug sizes. Long wrenches, wrenches with offsets, short wrenches, sockets, sockets with wobble joints, deep sockets, super-short extensions, sockets with the hex on the back plus a wrench, etc. I think the most generally useful one I have is a short wrench with about a 1" or 1½" offset. I made one once with a torch to get the bend just right for a particularly ornery car (57 Chev) where the steering column was in the exact worst possible spot.

Rowdy's one with the notch is pretty cool. That's kind of like an O2 sensor socket.

Big blocks aren't usually near as bad about this.... I'm sure all the SBC guys know what I mean.

And, I'm sure all the SBC guys will identify with having every imaginable 7/16" or 3/8" wrench and socket combo for header bolts, too.
 
#7 ·
lol I'll make all you guys a deal.......I'll change the plugs in your cars if you change them in my 95' Z28.......7 of them are taken out from the bottom and 1 from the top....:)
 
#11 ·
I had a '96 Z28. It was a former highway pursuit car that I bought at auction. I got it cheap, but had to Heli-Coil the #7 spark plug threads. Talk about a bitch.
 
#8 ·
I have a Great Neck spark plug socket which is a good bit shorter than a typical Craftsman-quality (or better) socket.

I may have to pick up a junk socket at the next swap meet and make a notch.
 
#15 ·
#16 ·
I'll change the plugs in your cars if you change them in my 95' Z28

I changed the plugs in a 95 z28 to run nitrous. It sucked. What sucked more was the first time I hit the button I melted two pistons. That really sucked. Spark plugs were easy then.
 
#19 ·
here's my two plug wrenches I use on my own cars. the old nice one is a 5/8 x 3/4 BluePoint 2024, the hunky looking newer style one is a Snap-On an XS02226 11/16 x 13/16
 

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#20 ·
i have something like that... slp makes one for the lt1 f bodies... made a big difference on my 97 camaro, but does help quite a bit on my chevelle too... just a short 5/8's spark plug socket with the 3/8's drive drilled out so the spark plug can stick through!
 
#21 ·
I have been experimenting with a specific plug tool. One of the guys that came up with used to work with a family member of mine. It seems to work pretty darn good, though I have only tried it on the small blocks. Here are some pics....
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