There is a catch with the brass T's. You can get PEX t's but they are a weird size. You need to go up one size. For example the 6.0 and 6.4 has 3/4" heater line and 3/8 line to the degas bottle. You need a 1"x1"x1/2" brass Pex T for the heater line tap and the T for the 3/8" line to the degas bottle has to be 1/2"x1/2"x1/2" Pex Brass T. Both of which should be stock for most Home Depots.
Actually, I wasn't referring to PEX fittings and I personally wouldn't use them not only because of the weird sizes but most of the PEX fittings aren't truly barbed, there ribbed so you could risk more of a leak than what you started with. But if you do want to try it I would carry a piece of hose with you to the store and make sure you get a very snugg fit before the clamps are installed. As I mentioned all of my heater hose is 3/4 so fittings are a bit easier to find, T's anyway. But in the brass fitting section you can get a female threaded T and male threaded barbed hose adapters, you could build any variation.
I would've actually thought there would be a lot more issues out of sinisters crimped on fittings. Does anyone know if copper can be safely used with or as heater lines? You can get that in a lot more sizes it can be bent, it can be swaged alot easier than Stainless tubing which is what I'm currently trying to switch my heater and vacuum hoses to. The only rubber that will be left on my system will be the transfer from engine to body to allow for movement.
Replaced or Updated: Radiator, thermostat, heater valve, degas cap, Stock Head gaskets, oil cooler, Harley Davidson windshield. ARP studs, STC, stand pipes, dummy plugs, Motorcraft max batteries, turbo oil supply & drain, Blue spring, Fuel/water separator drain plug, interior light LED conversion, Recon smoke LED tail lights, third brake light & mirror lights & added Big rig ice running board and Fire & ice tailgate strip. Other mods: Garrett powermax turbo with riff raff SP billet wheel & boots, Metal CAC tube w/cool it thermo tec aluminized coating, Harpoon, tailgate assist, Drilled/slotted rotors w/ceramic pads, Goodyear Wrangler Duratrac 275/65R20 & Gatorback belt, IPR Generation 2 EGR & up pipe delete. MBRP 5" turbo back SS straight, IPR coolant filter, Rotella ELC conversion Fumoto; oil drain, block drain x's 2, CCV drain. Electronics: PHP Gryphon/Eco, Atlas 40,80,Herc, Edge CTS insight w/EGT, Upfitter switch, high idle mod, JVC KW-NT700, Viper 5904 2-way.
Last edited by 05_HARLEY_F250; 12-03-2012 at 11:29 PM.