Data Plate
Well-Known Member
I have a Stant SP-9 7lbs lev r vent cap on my 69 charger RT 440 is that the correct cap?
Radiator cap
- Thread starter Data Plate
- Start date
No, on a stock radiator it should be a 16lb. cap.
Not correct as far as originality but it should be fine. The pressure just raises the boiling point of the coolant. Having overheating issues?
- Local time
- 3:47 PM
- Joined
- Jan 29, 2018
- Messages
- 19,379
- Reaction score
- 63,287
- Location
- Midland Ontario, Canada
Richard has the correct small rivet '69 and prior caps available now. www.restorationpartsandmaterials.com
Suregrip391
Well-Known Member
I think those lower lb caps are designed for aluminum radiators.
65-440
Well-Known Member
- Local time
- 5:47 PM
- Joined
- Dec 2, 2009
- Messages
- 3,378
- Reaction score
- 3,019
- Location
- virginia beach, va
And questionable radiator cores that might not be able to handle 16psi!
65-440
Well-Known Member
- Local time
- 5:47 PM
- Joined
- Dec 2, 2009
- Messages
- 3,378
- Reaction score
- 3,019
- Location
- virginia beach, va
Damn that high pressure!...just kidding, that does suck. Hopefully it didn't drench your carpet too badI have a heater core leak now!
Just a slight seep. Enough to haze the glass inside. I'm not a fan of stop leak but I might try that first.
65-440
Well-Known Member
- Local time
- 5:47 PM
- Joined
- Dec 2, 2009
- Messages
- 3,378
- Reaction score
- 3,019
- Location
- virginia beach, va
Tie the hoses together now before it gets worse! I'd pull the box and replace the core before i dump that mess in there, that stuff wreaks havoc wherever it decides to clump together
Data Plate
Well-Known Member
Started the car today first time in 30 years ran pretty good. I put a 185 thermostat in it and its running at about 200 degrees which i thought was kinda high but thats at a idle i didn't take it for a ride yet.
65-440
Well-Known Member
- Local time
- 5:47 PM
- Joined
- Dec 2, 2009
- Messages
- 3,378
- Reaction score
- 3,019
- Location
- virginia beach, va
200 high? No way....240 is high!
200 is not going to do any damage to your vehicle. However, you might get a little sticky sitting in the car on hot days. That's why a lot of owners like to run as close to 180 as possible. It's more a secure feeling and comfort thing than a requirement.
- Local time
- 2:47 PM
- Joined
- Mar 28, 2014
- Messages
- 33,728
- Reaction score
- 53,498
- Location
- South Louisiana
200 would make me worry, for sure. I like to see the temp w/in 10° over the thermostat, maybe 195° w/AC on in the summer in the swamp w/a 180 T-stat
I also know that beyond a point, detonation can occur, maybe by hot spotting a cylinder head, or just general temperature across the board being higher. It seems like my lifetime of experience is that old school big blocks run better at 180 than 200. New tech with new engines and new materials are made, designed to run hotter, old school engines not so much. JMO
I also know that beyond a point, detonation can occur, maybe by hot spotting a cylinder head, or just general temperature across the board being higher. It seems like my lifetime of experience is that old school big blocks run better at 180 than 200. New tech with new engines and new materials are made, designed to run hotter, old school engines not so much. JMO
65-440
Well-Known Member
- Local time
- 5:47 PM
- Joined
- Dec 2, 2009
- Messages
- 3,378
- Reaction score
- 3,019
- Location
- virginia beach, va
Really? Normal operating temp is technically 210 I believe.....yes they run better with cooler air but too cool of an engine temp is not good either..
- Local time
- 2:47 PM
- Joined
- Mar 28, 2014
- Messages
- 33,728
- Reaction score
- 53,498
- Location
- South Louisiana
Yeah, maybe that's just me, but 200 up would really have me anxious.
Similar threads
