NeXJ
NAXJA Forum User
- Location
- Los Angeles
I have a 9 or 10 year old GDI 3-row radiator in my 92 XJ that's been sitting a lot... the autozone replacement water pump is blown and the rad hoses are leaking a bit... I'm thinking there must be some blockage especially since there was some significant rust inside the water jacket of the 97 HO that I installed in the thing when I got the engine. So anyway- after talking with a radiator shop - the guy told me I should hang onto the GDI and they would charge me $60 to rod it out and clean it up. At any rate, I started thinking about it after coming across a thread that mentioned the 3-row rads tend to use a 1/4" tubing and there are some pretty good 2-rows out there using 5/8" tubing.
So here's the question... since the 3 row is 1/4" (1/4-1/3 the throat area and 50 percent longer) wouldn't it present WAY more resistance on the water pump and also make the engine work a lot harder....? Imagine having to squirt water at high velocity through 10 feet of 5/8" tube vs 15 feet of 1/4" tube... I would think the later would require way more static pressure... thoughts??
So here's the question... since the 3 row is 1/4" (1/4-1/3 the throat area and 50 percent longer) wouldn't it present WAY more resistance on the water pump and also make the engine work a lot harder....? Imagine having to squirt water at high velocity through 10 feet of 5/8" tube vs 15 feet of 1/4" tube... I would think the later would require way more static pressure... thoughts??