Compression tester adapter

Maverick pro

Maverick pro

New member
I've recently purchased a compression tester for my marauder None of the fittings work on our 4v heads. Is there a specific adapter for our heads? My cornwell set will not work. I even thought about modifying a old spark plug to use as a adapter.
Thanks...
 
I used a standard 14mm adapter in my 04 that has 9 thread heads, but I tried to use it to do a leakdown test on an 03 with 4 thread heads and found the threads are recessed too far. I bought an Actron compression tester at Advance Auto that has a long 14mm adapter, I should get to it in the next few days. I'll let you know if it fits, but it looks like it will.
 
Comin' in Hot said:
I used a standard 14mm adapter in my 04 that has 9 thread heads, but I tried to use it to do a leakdown test on an 03 with 4 thread heads and found the threads are recessed too far. I bought an Actron compression tester at Advance Auto that has a long 14mm adapter, I should get to it in the next few days. I'll let you know if it fits, but it looks like it will.
Click to expand...
Thank you...yes definitely let me know what you find out.
 
Had the same problem, I purchased a second tester that fit. The problem exists at the taper on the tip


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I didn’t have time to do the test today, but I did spin the tester into the head to make sure it fits. This is what I bought from summit when I was passing through Ohio, but I saw the same one at my local advance auto. You could see the 14mm long thread adapter in the picture, I held it up next to a spark plug and it’s about the same length.

https://www.summitracing.com/oh/parts/anm-cp7827/
 
Comin' in Hot said:
I didn’t have time to do the test today, but I did spin the tester into the head to make sure it fits. This is what I bought from summit when I was passing through Ohio, but I saw the same one at my local advance auto. You could see the 14mm long thread adapter in the picture, I held it up next to a spark plug and it’s about the same length.

https://www.summitracing.com/oh/parts/anm-cp7827/
Click to expand...

Awesome...thank you. I'm gonna order one tonight.
Will this work on the 03 and 04 heads?
Thanks
 
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