-6 or -10 for coolant lines?
 

I'm pulling my solenoid rack out to go non-seq and make room for my new fuel system. I need to get some lines to connect the throttle body coolant nipples to the water pump and the block. I measured the hardline nipple sizes of the fuel and coolant lines. The coolant nipples are significantly bigger and I can't get the stock rubber fuel lines to fit around them. I had planned on using my extra -6 Earl's line to connect the water pump and throttle body passages.

Does anyone know if I need to use -10 line for this, or will I be able to get -6 line on the coolant nipples without too much trouble? I'll probably use some Earl's "econo-fit" fittings to secure the hoses on the nipples so they'll look prettier than just using worm drive clamps.

Thanks,
-Dave

The nipples should be -6.

Thanks, jspecracer7. I figured someone who had a lot of braided lines in his engine bay would know the answer to my question.

-6 = 6/16" = 3/8"
-10 =10/16" = 5/8"

thanks, sugauma. I'll use that for future reference. What about internal diameters though? That's really what I need.

I just got out my dial caliper after getting some of my fuel components in the mail last week. The coolant line nipples are all -8 except for the AST/AST elimination kit nipple that connects to the coolant overflow tank (-6).

Unless I'm mistaken, those should be ID measurements.

I haven't used braided line for a while and don't have any on my car right now so I can't remember 100%.

yes, actually, they are internal measurements. They equal about the same as the measurement of the nipple from the outside.