TB Bypass Mod Question
 

What kind of caps is everyone using to cover the ports on the throttle body?
Does it need a clamp? Or just push them on and done?

You need them up north in the cold otherwise your TB butterflies will freeze and hang. Not sure if you get any benefit from disconnecting them.

The benefit from disconnecting them in hot weather climates is the throttle bodies aren't heated up by the coolant (thereby heating up the intake air) when the car is hot.

No need to cap them unless you're worried about some small bugs/critters taking up nest in the tubes. If you drive the car enough you won't have that problem.

Perfect - it’s a garage car, never sees cold or snow
With my A2A Stillen setup these hoses really get in the way! TopGunz V1 is a very tight fit with the charge pipe and I think the TB bypass would help free up alittle space.

Personally, I didn't cap the ports on the throttle bodies, just left them open. As for the coolant line output/input it's self instead of capping it and risking that blowing out from pressure some how I just looped the hose. I've driven the car in high 30s/low 40s with no issues, don't really plan on driving at freezing temperatures so can't speak for that.

Does any one know the hose Inner diameter at the throttle bodies?

I'm thinking of just bending to a u-shape, some SS piping and creating some beads on the ends and clamping to the Inlet and outlet of those hoses.

Thus just circulating the coolant and having ability to revert back to oem if need be. Car is only summer driven.

I want get the proper SS pipe O/D.

This is what I found

The Nissan 370Z throttle body coolant lines require a 5/16-inch (approximately (8 mm) Inner Diameter (ID) hose.

This might work

http://https://www.amazon.com/TAISHER-Stainless-Fittings-Splicer-Fitting/dp/B0DKHT1KNJ

No need to cap them at all, you can just twist the hose barbs out of the throttle body similar to how the GT-R TBs are.

Wish I knew this a few days ago when I was troubleshooting a misfire.... I'll definitely remove them in the future as they're eyesores without the hoses.

Thank you, I did end up finding it is 5/16 (i forgot how/where. lol)

and I have seen those u-shaped barbs on amazon. They should be ok on low pressure such as this, but I prefer a bead. I may try these, and keep an eye on them for leaks.

and maybe something like this to help clean up and keep a clean, professional look.

https://www.caplugs.ca/product-line/...ic-caps-plugs/