COOLING SYSTEM QUESTION - ZR-1 Net Registry Forums

Bill · 08-28-2005

As some of you may know I just put a new radiator in my Vette. It works fine. Wile testing on the hiway at about 70 mph I found that by turning on both fans the temp would drop by 2Âº C. This leads me to believe that the incoming air is going over the top of the radiator not through it. Last week at â€œGlass on the Grassâ€ in Tracy I saw a â€™92 with a rubber seal between the air cleaner and the hood. Is this seal â€œstockâ€ Iâ€™ve looked in several catalogs and donâ€™t see any.

We Gone · 08-29-2005

I have a 95 Lt1 car that has the seal on the underside of the hood I think its to help keep air pressure at the air cleaner, but it is not on my 91 LT5 and it was not on the 90 LT5 that I had..The air going thru the Rad. should come from under the front.

I don't see how any air would be directed from under the hood and down thru the rad box.

ZR1 MK · 08-29-2005

I also tried that and had a 5 degree reduction. I thought it was my wire mesh screen creating a restriction. I will check on the way home as I have the screen off today. My system is modified, but I have sealed my radiator from air leaks fairly well. I even put a trimmed plate around the condensor tubes to reduce air leakage.

Z Factor · 08-31-2005

I don't have the seal you referred to either, so maybe they added it.

Besides your mods, have you added a bottle of Water Wetter? The stuff really works.

Bill · 08-31-2005

Quote:

Originally Posted by Z Factor

I don't have the seal you referred to either, so maybe they added it.

Besides your mods, have you added a bottle of Water Wetter? The stuff really works.

Yes, I have been running water wetter and it does help. I think that the water side of the radiator was cloged. The new DeWitts radiator seems to have made all the difference. I'm still running water wetter, I'm sold

Nick · 09-01-2005

Where did you get the DeWitts radiator? Any pics?

Bill · 09-01-2005

Quote:

Originally Posted by Nick

Where did you get the DeWitts radiator? Any pics?

I got the radiator directly from Tom DeWitt at
http://www.dewitts.com/pages/product...asp?ProdID=300

here is a comparison picture Old vs New

08-28-2005	#1
Bill Join Date: Mar 2004 Location: Sacramento, CA. Posts: 141	COOLING SYSTEM QUESTION As some of you may know I just put a new radiator in my Vette. It works fine. Wile testing on the hiway at about 70 mph I found that by turning on both fans the temp would drop by 2Âº C. This leads me to believe that the incoming air is going over the top of the radiator not through it. Last week at â€œGlass on the Grassâ€ in Tracy I saw a â€™92 with a rubber seal between the air cleaner and the hood. Is this seal â€œstockâ€ Iâ€™ve looked in several catalogs and donâ€™t see any.

08-29-2005	#2
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	I have a 95 Lt1 car that has the seal on the underside of the hood I think its to help keep air pressure at the air cleaner, but it is not on my 91 LT5 and it was not on the 90 LT5 that I had..The air going thru the Rad. should come from under the front. I don't see how any air would be directed from under the hood and down thru the rad box. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

08-29-2005	#3
ZR1 MK Join Date: Aug 2005 Location: NY Posts: 142	I also tried that and had a 5 degree reduction. I thought it was my wire mesh screen creating a restriction. I will check on the way home as I have the screen off today. My system is modified, but I have sealed my radiator from air leaks fairly well. I even put a trimmed plate around the condensor tubes to reduce air leakage.

08-31-2005	#4
Z Factor Join Date: Dec 2003 Location: S. Florida Posts: 2,647	I don't have the seal you referred to either, so maybe they added it. Besides your mods, have you added a bottle of Water Wetter? The stuff really works.

09-01-2005	#6
Nick Join Date: Jul 2005 Location: Auburn, Washington Posts: 585	Where did you get the DeWitts radiator? Any pics?