| Author |
Message |
joe (Joe_Littlewind) (12.14.225.53)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, August 10, 2001 - 1:17 pm: | |
When I brought my 4106 home last Saterday, I was running @ 70-75 mph and knowticed that the indicated water temp was about 220. The outside air temp was 95 with hi humid. I backed off on the speed and the temp dropped to below 200. I could run @ 65 mph and the temp would stay @ 210 or below. On climbs I down shifted to move more air over the radiator while maintaining 65 mph. I have a number of questions 1) Should I varify my gage indication is acurate? 2) is my down shifting on climbs to improve cooling a norm practice? 3) what is the norm running temp for a 8V71? Thanks to all, Joe 4106-2119 |
Dwight (208.32.172.21)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 11, 2001 - 12:19 pm: | |
Hi Joe
I have a RTS II with a 8v71 and it runs 180 deg..sometimes 190 ...
Yes check your gauge..200 is too hot!!
yes downshifting is what to do to cool down the engine some, high RPM to circulate the water
also to much antifreeze will cause some heat, I cut back on mine and it helped, something like 60% water 40% antifreeze, the factory recommends 50% 50%..
also if your transmission is running hot it will cause some engine heating (assuming you have a automatic transmission)if my V-730 Allison is a little over full, the temp comes up on it, 3 quarts over full will bring my temp to 210 on the Trans, it runs at 180 when it has the correct fill level...check it hot, the cold mark on mine is not right, when the oil gets hot it expands quiet a bit!!!
Hope this helps??
Hope this helps... |
joe (Joe_Littlewind) (12.14.225.50)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 11, 2001 - 1:35 pm: | |
Thanks Dwight, I'll check the coolant mix (not sure how), gage and trany fluid level. trany was running cool (180 - 190). the previous owner said he ran w/indicated temp of 210 regularly. hope its the gage cause i just ran about 400 miles at that temp. joe |
Tom Caffrey (Pvcces) (12.146.33.116)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 11, 2001 - 3:25 pm: | |
Joe, If you haven't been losing any coolant and you aren't going through lubricating oil, then it seems to me that it is real unlikely that you have hurt your engine. As an example, when they built the airport here in Ketchikan, the Detroit engines they had the least trouble and best service out of were the ones that ran hot (around 200 degrees). It made the drivers a little antsey, but they used less fuel and got peak power out of them. If you lose water, then the problem must be corrected pronto if you are to avoid bigger problems. They will not tolerate running low on water and working hard very long at all. If that happens in a newer coach, the computer will shut down the engine, and it can be restarted, but it will only run 30 seconds before it stops again. I was an hour north of LA a couple of months ago on a Greyhound; it blew a water hose and that is exactly what happened. It did allow the driver to get the bus off the freeway and we set there 2 hours waiting for another bus from LA.
Tom Caffrey 4106-2576 |
Chuck Harris PD4104 (66.44.13.117)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, August 11, 2001 - 8:10 pm: | |
Hi,
It is easy to check your antifreeze mix. Just go to your local Pepboys, or other auto supermart, and get a radiator hydrometer. Get the type that looks like a turkey baster, has a thermometer, and a little glass float that floats inside the "turkey baster". They cost $10 at most. Avoid the cheapy one that Prestone sells. They work only at one temperature (and not so well there).
-Chuck |
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