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Catch can hose size question

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Old May 6, 2015 | 04:50 PM
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Default Catch can hose size question

Doing my own catch can and does anyone know the inside diameter of the hoses that connect to the manifold and throttlebody?

Many thanks
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Old May 6, 2015 | 04:54 PM
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It's for a LS3 Grand Sport
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Old May 6, 2015 | 05:15 PM
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Originally Posted by Guard Dad
It's for a LS3 Grand Sport


I have a thread devoted to installing a catch can on my 2013 Grand Sport. I'll try to check out what the exact connection sizes are for you.

( https://www.corvetteforum.com/forums...h-can-pic.html )
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Old May 6, 2015 | 05:46 PM
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Originally Posted by dmoneychris


I have a thread devoted to installing a catch can on my 2013 Grand Sport. I'll try to check out what the exact connection sizes are for you.

( https://www.corvetteforum.com/forums...h-can-pic.html )
I had to get some threaded connections from Mishimoto & what we did was, took the elbow that one end is threaded to fit the 10 AN braided hose & the other end has a grooved attachment so shrinkable rubber hose can heat shrink onto it. Totally sealed up. It's hard for me to explain. My good buddy did the running around & shopping for the connections, & most of the installation. If you need more info, I will get it from him & post some more details. Just let me know.






Last edited by dmoneychris; May 6, 2015 at 06:07 PM.
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Old May 6, 2015 | 07:18 PM
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That looks pretty slick. I was considering something a little simpler using some black low pressure fuel hose and a catch can left over from an unrelated project. I'm guessing I'll need 5/16 or 3/8 fuel line but I'm not sure. I could wait till I'm into the job but I'm trying to reduce downtime by having all the materials on hand before I start the project.
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Old May 6, 2015 | 07:24 PM
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#10AN is 5/8" ID right? That is bigger than I expected. Was that what was needed or just what was convenient?
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Old May 6, 2015 | 07:29 PM
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Originally Posted by Guard Dad
#10AN is 5/8" ID right? That is bigger than I expected. Was that what was needed or just what was convenient?
https://www.corvetteforum.com/forums...h-can-pic.html


It was not really a cheap or convenient kit-lol I think they are 5/8"... (http://www.mishimoto.com/mishimoto-b...catch-can.html)-You can scroll down on the baffled oil catch can page from Mishimoto & see what the kit comes w/and the optional fittings. BTW I used all the optional braided hoses & fittings. If you're in Texas you can come get the stuff the kit came with. I have all the rubber hoses & regular fittings still. I just selected the 10AN braided steel hoses & had to special request the fittings & red brackets as options...(http://www.mishimoto.com/mishimoto-t...coolers.html#5)

Last edited by dmoneychris; May 6, 2015 at 07:37 PM.
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Old May 6, 2015 | 08:10 PM
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Thanks for the offer but I'm in SoCal so that's a bit of a drive!
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Old May 6, 2015 | 11:20 PM
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Originally Posted by Guard Dad
Doing my own catch can and does anyone know the inside diameter of the hoses that connect to the manifold and throttlebody?

Many thanks
Stranded gas line came with my catch can kit...
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Old May 7, 2015 | 02:19 AM
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Originally Posted by Cherokee Nation
Stranded gas line came with my catch can kit...
Do you recall what was the inside diameter of the hose, 5/16" or 3/8" perhaps?
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Old May 7, 2015 | 12:17 PM
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Originally Posted by Guard Dad
Do you recall what was the inside diameter of the hose, 5/16" or 3/8" perhaps?
3/8"..
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Old May 7, 2015 | 12:31 PM
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Originally Posted by Cherokee Nation
3/8"..
Much appreciated!
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Old May 7, 2015 | 04:54 PM
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Originally Posted by Guard Dad
Much appreciated!
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