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View Full Version : k24a2 Coolant port tapping and fitting size


that1blackhatch
01-29-2011, 06:59 PM
im upgrading valvetrain and would like to use my a3 manifold, does anyone know the size of the fitting what size thread i need to tap the block with?, quick response would be frigg'n awesome trying to finish this on my weekend off!
japarossa
01-29-2011, 07:28 PM
You need a 3/8 NPT tap then a 90* fitting with 3/8 NPT to 5/8 Barb fitting......all this information can be found by searching k24 swap
that1blackhatch
01-29-2011, 07:42 PM
You need a 3/8 NPT tap then a 90* fitting with 3/8 NPT to 5/8 Barb fitting......all this information can be found by searching k24 swap

really? could u post the link to the thread? i tried searching and couldnt find the size mentioned anywhere...
japarossa
01-29-2011, 07:57 PM
I found this link in one of the ephatch "k24 info" threads not sure which one, unfortunatley its not ephatch material but still good info. Here's the crsx link
http://forums.clubrsx.com/showthread.php?t=644703&page=2
AKEP
01-30-2011, 05:19 AM
would this (http://www.summitracing.com/parts/RUS-640543/) and this (http://www.summitracing.com/parts/SUM-220087B/) work?
I want it to look like this
http://i197.photobucket.com/albums/aa44/highrev1/Supercharger%20CRAP/waterport2.jpg

i swear i'm having the hardest time finding the right fittings that will fit the coolant hose. if there is a braided line with a 90* on it could someone hook up a link?:whoa:
japarossa
01-30-2011, 06:44 AM
Those fittings will work but they are in the wrong holes. They should be the opposite of what you see in the pics on a k24a2 head.
AKEP
01-30-2011, 10:16 AM
i know that, and the stock coolant hose will fit this? to be sure... im going to order them as soon as you say they're good.
japarossa
01-30-2011, 10:42 AM
As you can see in the pics the fitting isn't hooked to the coolant line but just sitting under it, I think this is because the stock hose is to thick to use that type of compession fitting. You could use that same type of fitting with the stock hose but it would have to be a 5/8 barb fitting on that end.
AKEP
01-30-2011, 11:52 AM
do i need o-rings?
japarossa
01-30-2011, 02:25 PM
The oring should be included with that fitting, but you will need some thread sealant. Most people reccomend putting the threaded fitting into the block with some sort of epoxy since you only get about 3-4 threads when you tap it.
AKEP
01-30-2011, 06:38 PM
got these instead

http://www.summitracing.com/parts/FRA-491914-BL/
http://www.summitracing.com/parts/SUM-220713-B/
japarossa
01-31-2011, 05:32 AM
perfect! that'll do it.
AKEP
02-01-2011, 06:00 PM
didn't get o-rings with the fittings...

did you guys have to drill the coolant passage to tap it? i don't have a 37/64 laying around.
Eddie Murphy
09-14-2014, 03:56 PM
would this (http://www.summitracing.com/parts/RUS-640543/) and this (http://www.summitracing.com/parts/SUM-220087B/) work?
I want it to look like this
http://i197.photobucket.com/albums/aa44/highrev1/Supercharger%20CRAP/waterport2.jpg

i swear i'm having the hardest time finding the right fittings that will fit the coolant hose. if there is a braided line with a 90* on it could someone hook up a link?:whoa:

Correct port to tap:
https://scontent-atl3-1.xx.fbcdn.net/v/t1.0-9/12400751_10206684680168666_714657258002156143_n.jp g?oh=e6083e6a0236e102a2d919e9a5414ba4&oe=5B4E5B09

https://scontent-atl3-1.xx.fbcdn.net/v/t1.0-9/581932_10206684680048663_7464174683020258450_n.jpg ?oh=2943b4192d69bdc871aa8dd512222dd4&oe=5B47B72D

https://scontent-atl3-1.xx.fbcdn.net/v/t1.0-9/12439557_10206684679888659_9171727523446690515_n.j pg?oh=da51213a4f4b0c7c8085502282760066&oe=5B47EBF9