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#161
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Karl |
#162
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I have a 195* thermostat in my car because that was the factory installed temp. The manual says that the engine is designed to operate at temps between 195* and 220*F. If you fill your radiator to 3" below the filler neck with a cold engine to allow for expansion of the coolant it should not spit any fluid out of the overflow. According to the manual the system will raise the boiling point of the coolant to 258*F if it is pressurized to 15PSI. If it is spitting fluid, the cap is probably bad or the system is overfilled. Karl |
#163
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210/220* hot water and convinced my Pontiacs like it this way!
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WP specs: 4-5/8 dia impeller, 11/16" vane height, .081" vane to divider plate clearance. Outside air temp 83 w/ 96% humidity (Cooler than usual - just rained). 180* thermostat A/C 'on' and driving 60mph coolant temp still at 212*, same results as my stamped impeller was with it's 1/8" clearance. Temp was ~180* in traffic. Temp gauge markings verified with my infared thermo gun. Checked timing and have 14* inital & 28* w/ vac adv hooked up. 60* total @ 3600 Disclaimer: These results are not typical (as per the sticky thread 'Chalk one up'). All tests were conducted using the same vehicle under uncontrolled conditions and no other changes made other than listed above, and a JB Weld mod to close the gap on the two divider plate to timing cover water ports. No "key hole" on divider plate. I'm glad I was never bothered by the temps, since nothing changed, but curiosity had gotten the best of me about these cast impeller and clearance claims. So this inquiring mind just had to know. New rad/old rad, 160* thermo/180* thermo, old unknown ratio coolant/fresh 50/50 coolant, rebuilt WP/old WP, clearanced impeller/as installed impellor, cast/stamped, Good ol' gas/new poopy ethenol gas, rebuild engine/old engine, all equal same ol' "HOT" coolant for me!!!!! So in conclusion, I am still in the same 210/220* hot water since 1978 and convinced my Pontiacs like it this way! DanC |
#164
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Mine's run at 210 since I put it on the road 6 years ago. I've tried everything I could to lower it, and nothing has changed it. I've accepted the fact that it's normal for this engine, and have gone to my happy place. I think I'm gonna remove the temp gauge altogether and complete my journey to acceptance!
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#165
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There is definitely a pattern here- going back over the thread a few pages,
Fla, La, Ga- we are used to seeing temps climb up to 200 and even higher and not all that worried about it. Wi, NJ, NY- lots of concern about temperatures riding up over the T-stat setting especially if it gets over 200 deg. I will say that some engines seem to run better if you can keep the temperature down, so its worth doing what you can to keep them cool. But then again they all run softer in hot weather so even that may be more perception than reality.
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1969 Lemans vert, matador red, 462 CI, 3.07 12-bolt posi 1974 455 TA, admiralty blue/red interior HPP "cover car" - sold "The best way to show a car is to drive it" |
#166
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what size crank and water pump pulleys are you guys running?......my sled runs a bit warm in the Florida summers, 190-220 depending on traffic etc...
I am wondering what a pulley change would do....I currently have a 7.25" crank and a 7.75" water pump pulley...so my water pump is under driven (stock pulley's)....I bet it would cool a bit better if I put a 6.1" water pump pulley on it....should get 200 rpm more at the water pump.. anyway....has any one experimented with their pulley size's??
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
#167
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pulley size
When I first got my car back on the road last summer I had a March alluminum pulley
setup on the car and it was an underdrive. I searched the posts and since I saved the original pulleys I put the original crank pulley back on and it was a huge difference. Current setup is a 7.25" pulley on crank and a 6" pulley on waterpump. I am running 3.08 gears and on a highway trip for 30 miles she hung at 190. And when i drove back roads home she went down to 175-180. I have a stock 3 row radiator(2 years old). A high flow 160 t-stat and stock fan(direct). 11 bolt pump with stamped impeller and clearanced down to George K's post. Have upper baffles installed to direct air to Radiator but am still missing bottom baffle. Can't find one in stock anywhere, repro or metal!!!! Also timing at 12 initial and 36 total. vacuum advance using ported source adding 12 degrees. 3 degrees of timing also helped as well. Carb is also dead on! Now time for me to add a Heat shield to starter anyway. Not even a click from solenoid until car cools down for 1/2 hour after an hour drive.(hot day 93*) Yes cables and wiring harness are new and stock logs. Anyone know a part number for the high temp solenoid?? Good Luck All!!!!!! And yes I am from Jersey!!!!!!!!!!!!!!!!
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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, DUI HEI and Ram Air pans and RARE Long Branch Manifolds |
#168
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Last week I took, the car in 85* weather on the highway. Was doing 90MPH, which is 4K in 4th gear!! and the car was right at 190*.
1:1 4th gar four speed 3:23 28" rear tire I new that I had to get a bigger rad when I put the new gears in. More r's = more heat. The same speed above with just the 2:56's and the RPM's at 80 where 1800. The temp was thermostat. I agree that each engine is different, but think all should run cooler than 210* if you wanted it too. P.S. Getting rid of headers and going to manifolds, other than awesome to install, they lowered under hood temps. P.P.S. Just got an old beat up GTO hood. Spent all day cutting out the metal and doing body work on it to make it open to the air. Once it is done, will see if temps go down further....
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1967 Pontiac Tempest 2dr HRDTP Coupe 468 C.I. 500 HP 5 speed = FUN!!! 1990 Chevy Suburban R2500 Daily Driver 1986 Volvo DL245 Wagon.. Project car!!! The Burb Files |
#169
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As far as the Hot Start problem you have, I have had great success with the Ford style remote setup. I install these on all my Pontiacs. The first one I had to do, '71 455HO with the HO exhaust manifolds. The heat shield thickness was practicley the gap between the starter and manifold to headpipe connection! I do not buy the kits but rather build my own and with the TA, GTO and GP was able to hide them either in the fender beside the battery or between the batt and core support on the GP. My diagram attached below. Quote:
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------------------------------ 1968 Firebird Convertable - my original HS car! 1978 Firebird Esprit "survior" 1930 Ford Model A Coupe .. (original) 1994 Buick .."TowMaster" ...woody wagon |
#170
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The wagon got its oil changed today. was looking into the valve cover. White milky oil. Just rained and the engine condensated sitting in garage. With the car running at t-stat of 160*, took 30~minutes @ idle, but then was nice and golden brown. So the water cooked right out. That was my first real experience watching the water come out of oil. Cool......
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1967 Pontiac Tempest 2dr HRDTP Coupe 468 C.I. 500 HP 5 speed = FUN!!! 1990 Chevy Suburban R2500 Daily Driver 1986 Volvo DL245 Wagon.. Project car!!! The Burb Files |
#171
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#172
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Damn HOT, but OK I guess........
Drove to a Veterans Benefit Show at the Battleship Park in Mobile AL yesterday.
In the cool morning on the two hour, 70 mph interstate drive over there my temp was around 210. (two hour drive) On the way back in high 80' outside temps with the a/c on to Pensacola my water temp was just below 250 My temp needle was just 'touching' the low side of the 250' hash mark. I experianced no pinging or power loss and my "idiot" light never illuminated. (one hour drive) From Pensacola back to home on the interstate again it was cool outside and no a/c, my 70 mph temp was 210. (one hour drive) I must admit I never had seen my temp this high before ever, but I was waiting to see what bad may happen, but nothing did. So much for my recent "clearanced" cast water pump install for me. I'm putting my stamped impeller back one!!! My of my experiance. Can't explain it, just tellin' ya like it is. DanC |
#173
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http://controlscentral.com/eCatalog/...3/Default.aspx
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
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