Well it finally happened last night. Pulled up to a stop, hear the inevitable hisssss, get out and see coolant coming out underneath. Pop the hood, and it's spraying out of the hose at the waterpump housing. So I gues it's finally time to ditch the closed loop system and do the conversion. To date I have had NO problems with it, and with the addition of the 3 core it has cooled quite well.
So I guess now I'm out to peice together the ultimate cooling system for the XJ. I have way to much $$ in my motor to do otherwise. So I am looking for a bit of help (and advice) with what to do.
I know my 3 current 3 core will not work. I just purchased a 3 core for the '96, so I may just take that one and use it.
So radiator is done.
I have been really looking at the Hesco waterpumps. I quote from thier website;
Provides 10 to 20% more cooling efficiency than the stock water pump. We have replaced the stock stamped steel 5-vane impeller with an 8-vane billet aluminum impeller to achieve this goal. The impeller is larger than the stock and lessens the cavitations of the coolant to create a more positive flow in the space between the impeller and the #1 cylinder. The dyno showed an additional bonus of 6 hp. and 2ft/lbs. of torque gain we weren't expecting. The horsepower gain comes from the impeller slicing through the coolant instead of paddling the coolant. Individual gains may very depending on what accessories are already in place and engine condition. Either way it is a worthy addition to any Jeep engine whether it's a street driver or an off-road rock crawler.
I figured if I was going to do it, do it right. It's not like I havn't blown useless money on my motor before.
So question #1 is this; Hesco list's 2 different ones (part numbers), does anyone know what the difference is?
My next question has to do with the t-stat housing. I've done a lot of reading and it seems like nobody has offically came out and stated that I would need a new t-stat housing. Once again I was looking at the one from Hesco (high-flow).
The question is can i use the one from Hesco, or do I need an alternative?
So now, radiator, water pump, and t-stat housing has been addressed. I know that I will need an different heater control valve. What about the overflow bottel? Rumor has it, that they are no longer available from DC. I'm sure I can find an alternative, but my question is this; will a new style overflow bottel fit in the location as it is in the older (93+) XJ's on my '89. I know not a major concern for some, but with me moving so much stuff around with the supercharger project that location would be perfect for me.
And lastly, does anyone know a way, or figured out a way to use the HO temp switch to operate the closed system fan automatically?
So to recap with the questions;
1) What Hesco waterpump would I need. Or I guess the real question is; does anyone know the difference between the 2 they have listed on thier website?
2) T-Stat housing. Will the Hesco one work with my application. And is thier a difference on what one I will now need converting to an open type setup?
3) Overflow bottle. Will one from a later model XJ fit in the same location on my '89?
4) Has anyone figured a way to use the HO temp switch to operate the closed system fan automatically?
EDIT: 1 more question. I am going to assume my stock hoses will work with the new style radiator as well?