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Over-heating on long grade - Printable Version +- Wanderlodge Gurus - The Member Funded Wanderlodge Forum (http://www.wanderlodgegurus.com) +-- Forum: Yahoo Groups Archive (/forumdisplay.php?fid=61) +--- Forum: WanderlodgeForum (/forumdisplay.php?fid=63) +--- Thread: Over-heating on long grade (/showthread.php?tid=8377) |
Over-heating on long grade - amweatherly@... - 08-18-2009 05:44 I spent a week at Buck,s Lake Camp. This camp is located in the northern Sierra's 45 miles NE of Oroville Ca. That's about a 40 mi climb with some grades a steep as 13%. Both my trans and engine temp got very close to max. Only pulling off to a turnout prevented red lining. I was geared down to 3rd abd 2nd, never pulling more than 10 or 11 lbs. of turbo boost. This is the first long climb I've done. Do I have a cooling problem. I don't think I ever had the pedal more than half down. It was also fun coming down, but thats another story. Art Weatherly Riverside Ca. '85 PT36 Over-heating on long grade - ronmarabito2002 - 08-18-2009 08:30 Yes. YOu have a cooling problem. Check to see that the radiator is not covered with junk on the outside. If that is clean, then have your radiator checked and flushed. If that doesn't get it, replace the thermostats. WARNING: It doesn't take much overheating to cost you an engine. R.E. (Ron) Marabito, Dallas, TX 92WB40 --- In WanderlodgeForum@yahoogroups.com, "amweatherly@..." wrote: > > I spent a week at Buck,s Lake Camp. This camp is located in the > northern Sierra's 45 miles NE of Oroville Ca. That's about a 40 mi > climb with some grades a steep as 13%. Both my trans and engine temp > got very close to max. Only pulling off to a turnout prevented > red lining. I was geared down to 3rd abd 2nd, never pulling more than 10 or 11 lbs. of turbo boost. This is the first long climb I've done. > Do I have a cooling problem. I don't think I ever had the pedal > more than half down. > > It was also fun coming down, but thats another story. > > > Art Weatherly > Riverside Ca. > '85 PT36 > Over-heating on long grade - J R - 08-18-2009 09:34 Art, What engine RPM were you pulling on the climb? DD's need lots of RPM to help with cooling and getting full power. I try to hold 2000-2100 and down shift at 1800, if I don't it will get Hot, fast. You can not lug a 6 or 8 V92's (or the V71's) I have at of OTR miles with the old 8V71, good engine if you don't baby it. J R Saunders in The Great Take State of Washington (South of SEA-TAC) aka jr182pilot Bug Smasher: 1982 PT40 Cruiseairs & Roof Airs Red 6V92 Photobucket http://tinyurl.com/cn85dx --- In WanderlodgeForum@yahoogroups.com, "amweatherly@..." wrote: > > I spent a week at Buck,s Lake Camp. This camp is located in the > northern Sierra's 45 miles NE of Oroville Ca. That's about a 40 mi > climb with some grades a steep as 13%. Both my trans and engine temp > got very close to max. Only pulling off to a turnout prevented > red lining. I was geared down to 3rd abd 2nd, never pulling more than 10 or 11 lbs. of turbo boost. This is the first long climb I've done. > Do I have a cooling problem. I don't think I ever had the pedal > more than half down. > > It was also fun coming down, but thats another story. > > > Art Weatherly > Riverside Ca. > '85 PT36 > Over-heating on long grade - David Brady - 08-18-2009 10:23 I'd add that you were probably running it for significant periods of time out of torque converter lock-up. The transmission runs on torque converter mode till you hit the upper rpm range of second gear at which point the torque converter locks and you have direct mechanical drive. In non-lock, the torque converter provides fluid drive which causes a bunch of heat. Try to go fast enough to put her in lock-up. Lock-up feels like another gear shift. Count the shifts, strive for three at a minimum. This will significantly cut down on the transmission heat, and will also cut down on engine heat. The tranny does a good job of baking the engine. David Brady '02 LXi, NC -----Original Message----- Over-heating on long grade - amweatherly@... - 08-18-2009 10:49 Rpms on the climb were 1700 - 2100. Art Weatherly Riverside Ca Over-heating on long grade - Gregory OConnor - 08-18-2009 12:51 I would find out when Stewart the owner of Walts radiator is in and take it by for a look at. http://stewartsradiator.com/contact.nxg He is near CCW and Mainstreet Riverside Greg of Tim&Greg 94ptca --- In WanderlodgeForum@yahoogroups.com, "amweatherly@..." wrote: > > I spent a week at Buck,s Lake Camp. This camp is located in the > northern Sierra's 45 miles NE of Oroville Ca. That's about a 40 mi > climb with some grades a steep as 13%. Both my trans and engine temp > got very close to max. Only pulling off to a turnout prevented > red lining. I was geared down to 3rd abd 2nd, never pulling more than 10 or 11 lbs. of turbo boost. This is the first long climb I've done. > Do I have a cooling problem. I don't think I ever had the pedal > more than half down. > > It was also fun coming down, but thats another story. > > > Art Weatherly > Riverside Ca. > '85 PT36 > Over-heating on long grade - Gregory OConnor - 08-18-2009 13:06 Dave did you ever learn if the HP is increased while in cruise? Over-heating on long grade - David Brady - 08-18-2009 13:22 Yes, it's in the DDEC IV documentation. Don't know about the other DDEC's. Something like: "Cruise power allows you to take advantage of additional torque and better performance when operating your truck in cruise control. Full rated torque is available when operating in cruise control to improve performance" David Brady '02 LXi, NC -----Original Message----- |