Where can I get valve holder to fit 3V head?

[Mojo88]

Trying to remove valve springs (engine still in car), so I bought a new valve holder (see pic below), but it will not thread into the head (2010 4.6L 3V). It is the right thread (12mm x 1.25), but I'm guessing the threads do not extend deep enough on the new valve holder.

Does anyone know where I can buy one that will work on a 3V head??

Thanks

Also, is there any way to rotate this pic 90*? I added a 90* rotation to the pic on my pic editor, but it is still displayed wrong here on the forum.

 

[TomL]

From what I can see in the pic, the threads look different on the adapter compared to the plug. Do you have some calipers to measure the thread pitch between the 2?

 

[Mojo88]

Thanks, I found one that fit, it has deeper threaded area.

https://www.amazon.com/dp/B004J0Z1WO?psc=1&ref=ppx_yo2ov_dt_b_product_details

 

[MasterofDisaster]

I changed valve seals once using some clothesline. Much easier than using compressed air.