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radiator cap
- Thread starter jelrod
- Start date
RichP
NAXJA Forum User
- Location
- Effort, Pa
You know, you can order jeep parts from any DC dealer. My local dodge dealer who I started using about 3 years ago and sent all my friends to with jeeps actually keeps alot of stuff in stock now, caps, plugs, wires, filters, fuel pumps, etc. Even the local shops have started using them. The nearest jeep dealer is 30+ mi away, more in other directions.
Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
Plus 19 PSI sounds a little high, do NOT all the system use the very common 16 PSI?
Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
Well, I have an open system 2.5L, its 16 PSI stock for me and most vehicles out there. Perhaps the closed system has different specs, but seen many posts saying to use 16 PSI on them.
What year, motor and cooling system type? They all can't be the same, because I've just shown my is different, although its far less common configuration than the most of the XJ's.
What year, motor and cooling system type? They all can't be the same, because I've just shown my is different, although its far less common configuration than the most of the XJ's.
Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
NapaOnline says you need a 13 PSI Cap, they have them $4.09.
http://www.napaonline.com/masterpag...ber=7032445&Description=Radiator+Cap+-+Retail
The '95 4.0L is also a 13PSI cap, I guess the 2.5L is 16 PSI for that time and 4.0L is 13 PSI. Seen lots of people recommend going to the higher 16 PSI, it does help prevent boil over, don't know why there would be a lower pressure stock? Again this is what NAPA says is stock, they can and have been wrong.
http://www.napaonline.com/masterpag...ber=7032445&Description=Radiator+Cap+-+Retail
The '95 4.0L is also a 13PSI cap, I guess the 2.5L is 16 PSI for that time and 4.0L is 13 PSI. Seen lots of people recommend going to the higher 16 PSI, it does help prevent boil over, don't know why there would be a lower pressure stock? Again this is what NAPA says is stock, they can and have been wrong.
RichP
NAXJA Forum User
- Location
- Effort, Pa
Stick a 13# on there and you will have cooling problems, first symptom will be an overflowing overflow tank...
Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
I've got no problem with that, I agree, use at least a 16 PSI cap.
So 19 PSI is what came on the 4.0L from the factory? OR 19 PSI is what is suggested because of the boil over?
So 19 PSI is what came on the 4.0L from the factory? OR 19 PSI is what is suggested because of the boil over?
RichP
NAXJA Forum User
- Location
- Effort, Pa
All my OEM caps are 16# and I have like 6 of them in my parts drawer, every 2 years x 3 jeeps....
- Location
- MilkyWay Galaxy
Haynes says 1984 -2000 year has:
4 Cyl & V6: 12 to 15 PSI
4.0 L, Str.6: 16 to 18 PSI
And there is a debate thread going on this past week as to what the renix era plastic bottle plastic cap vent pressure is rated for!
They may have changed over the years, especially 1990 to 91, 95-96 and 2000.
4 Cyl & V6: 12 to 15 PSI
4.0 L, Str.6: 16 to 18 PSI
And there is a debate thread going on this past week as to what the renix era plastic bottle plastic cap vent pressure is rated for!
They may have changed over the years, especially 1990 to 91, 95-96 and 2000.
5-90
NAXJA Forum User
- Location
- Hammerspace
Ecomike said:
I've tested four RENIX caps of varying age (NIB - 5yo,) and they all came up to 16#.
Using 16# makes some sense, since the 242 likes to run a little warm anyhow. 19# sounds severe - I'd go with a 16#, unless you were running straight water. No sense straining the system more than you have to...
- Location
- MilkyWay Galaxy
5-90 said:
What a novel idea :eyes:! Testing them!!!!!:laugh: 5-90 gets the award on this one!
Somebody claimed they had Renix era cap marked 6 lbs in another thread here just a few days ago. I didn't believe the 6 lbs then, and I certainly don't now.
Way to go 5-90!
I think we can put this question to rest now.
Maz
NAXJA Forum User
- Location
- LaCanada, CA
Ecomike said:
X2
RichP
NAXJA Forum User
- Location
- Effort, Pa
Doesn't every one have one of those handy dandy stant cooling system test kits ? Has a pump, adapters, cap tester, very worthwhile, less than $90.
http://www.handsontools.com/store-products-STN12270-Stant-Radiator-Pressure-Tester-Kit_1184.html
http://www.sears.com/sr/javasr/prod...Automotive+Specialty+Tools&BV_UseBVCookie=Yes
http://www.handsontools.com/store-products-STN12270-Stant-Radiator-Pressure-Tester-Kit_1184.html
http://www.sears.com/sr/javasr/prod...Automotive+Specialty+Tools&BV_UseBVCookie=Yes
- Location
- MilkyWay Galaxy
RichP said:
OK, rub it in, although I have been called Mr. Gadget more than once, that is one tool I never bought. Guess I figured a new cap for $6.00 was a better deal on a test kit tool than $90, LOL:laugh3:. With my luck I'd never be able to find it when I wanted it once every couple of years.
But I must admit, it is great for testing radiators and entire cooling systems (hoses, etc) for leaks. Certainly would not run a radiator shop with out one!
