spark plug adapters

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spark plug adapters

Post  460bronco on February 3rd 2014, 5:29 pm

Does anyone know where to get a set of adapters that will allow you to run a 14mm spark plug in the big plug (18mm) DOVE heads?  I saw mention of Garrett machine when I did a search, but am not having any luck.  

How do these said adapters work?  Will I need a longer reach spark plug than the conventional .460"??  Any help is greatly appreciated.

Thanks,
Jon


Last edited by 460bronco on February 4th 2014, 8:54 am; edited 1 time in total
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Re: spark plug adapters

Post  Lem Evans on February 3rd 2014, 5:33 pm

Garrett made the only ones that i've seen.

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Re: spark plug adapters

Post  rmcomprandy on February 3rd 2014, 6:18 pm

After doing some checking around ... I was told that a company "Innovative Products of America" has their version of those adapters.

AND, available through Advance Auto Parts.

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Re: spark plug adapters

Post  460bronco on February 3rd 2014, 7:57 pm

Thanks for the info! I'll check those out from advance auto.
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Re: spark plug adapters

Post  460bronco on February 3rd 2014, 8:29 pm

Looks like I found the ticket!  

www.sparkplugadapters.com

These guys have just about any adapter you could think of!  The best part is the price @ $5.65/ adapter vs. ~ $15/ adapter from advance!
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Re: spark plug adapters

Post  HorsinAround on February 6th 2014, 10:03 am

Garrett is where I got my set. Not sure what is up with their main website, but you can hit http://garrettmachineandwelding.com/ to get his number.
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Re: spark plug adapters

Post  GT300TD on February 6th 2014, 11:21 am

WOW $15 bucks apiece is a bit pricey   Shocked

Think I'll stick with my 45's


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Re: spark plug adapters

Post  rmcomprandy on February 6th 2014, 12:49 pm

GT300TD wrote:WOW $15 bucks apiece is a bit pricey   Shocked

Think I'll stick with my 45's


It is about right for a double threaded, lathe cut product not CNC machined in the U.S.A.

LABOR is the main area where you get what you pay for.

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Re: spark plug adapters

Post  rmcomprandy on February 6th 2014, 12:54 pm

460bronco wrote:Looks like I found the ticket!  

www.sparkplugadapters.com

These guys have just about any adapter you could think of!  The best part is the price @ $5.65/ adapter vs. ~ $15/ adapter from advance!

MAYBE you have to call them but I don't see an 18mm tapered seat to 14mm flat seat adapter in the bunch they show.

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Re: spark plug adapters

Post  460bronco on February 6th 2014, 4:22 pm

Yeah Randy..

I ordered a little pre-maturely.  I ordered his 14mm to 18mm adapters and then realized that the adapter was for a 14mm tapered seat plug.  

So, I sent the guy an e-mail and he called me with-in 30 minutes...  Keep in mind this is around 8pm.  He was great to talk with and told me to just send him the plug I wanted to run and he would do his best to get me an adapter built!

The problem he kept bringing up with the flat seal deal was:  In order for the adapter to have a hex, it would need to be fairly long and that could throw a wrench in using a .750" reach plug.

-----Do the garrett pieces have an external hex to install them with, or do you just use the spark plug to install the adapter?
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Re: spark plug adapters

Post  lghting94 on February 6th 2014, 5:22 pm

The ones I bought from Garrett machine did not have a hex on them. They come with a tool to install them and instructions to use a specific Loctite when installing. They worked great but after several heat cycle would sometimes come out with the plug when changing plugs, was no big deal to get them off the plug and reinstall.
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Re: spark plug adapters

Post  460bronco on February 6th 2014, 8:11 pm

That's just the info I needed!  Thanks lghting94!  

What did the tool look like?
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Re: spark plug adapters

Post  lghting94 on February 7th 2014, 9:14 am

a machined sparkplug section with the threads and hex head only.
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