I purchased a set of OBX high performance radiator hoses and installed them today. Here is a DIY on how to do it.
NOTE: PLEASE ASK QUESTIONS IF YOU HAVE ANY. I AM NOT RESPONSIBLE FOR DAMAGE TO YOUR CAR OR YOU!
Remove the radiator cap.
Place a tub to collect the used coolant. I added a small piece of tubing to the nipple to prevent spillage.
Open the drain valve located at the bottom of the radiator on the drivers side. Be careful if you open it too far it will come out and you'll have a mess on your hands.
Here are the hose clamps you'll need to remove.
Using a pair of pliers squeeze the two tabs together and move the clamp back.
After the clamp is removed you may need to use a screwdriver to loosen the hose from the tube.
The hose removed. Now do the same with the other clamp on the top of the radiator and the two far ends of the stock hoses connected to the engine block. The one above the transmission is tough to see but turned out to be the easiest bar far to remove. Have patience as these clamps are tough some times.
Slide the new hoses onto the radiator tubes and the engine block fittings exactly reversed of the removal. I chose to replace the Scion hose clamps with an easier model to use. Be sure to slide the new hose clamps onto the hose before attaching to the radiator and engine block fittings.
The next part is for those of you who want to use an inline sender unit for your aftermarket temperature gauge. If you are not using one scroll down to the end for final steps.
Measure the amount of hose you'll need to remove to fit the inline sender unit. Be sure to measure from the inside of the unit so you don't cut the hose too short.
Measure the other end and then make your cuts.
Place your hose clamps on the new hose before inserting the inline adapter.
Insert the front end.
Then that back end.
Tighten both hose clamps. Be sure to place the adapter far enough forward on the hose that your sender unit doesn't interfere with the hose to the right.
Your finished product. Now it's time to refill the system with new coolant.
A long funnel comes in handy if you want to avoid getting coolant all over your engine compartment. Fill the radiator to the top and then start your engine.
As the engine warms and the thermostat opens the coolant level will drop. Add more coolant to bring the level to just below the neck of the radiator. Replace the cap and check for leaks. If there are no leaks you are done.