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Re: [GMCnet] 230 Degrees Fahrenheit [message #257824 is a reply to message #257809] Mon, 04 August 2014 20:50 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Registered: January 2004
Location: Hebron, Indiana
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Senior Member
lotsofspareparts wrote on Mon, 04 August 2014 19:12
Keith V wrote on Mon, 04 August 2014 12:45
George Beckman wrote on Mon, 04 August 2014 13:43


Sorry, Keith. Merging everyone in a two mile space has a much better chance than merging in 40 feet when the cones are crowding in. That's why the signs are two miles out. 1) you _have_ to merge, so merge and 2) merging is easier at 45 than when stopped 0.


This is important. It's the right way to merge.
I'm on a mission to undo years of brainwashing that you need to move over at the first lane closed ahead sign. The signs are there to remind you, not to make you merge. That's why they say "lane closed ahead", not "Merge Left".
When you see the "Merge Left" sign, then you merge.

( This only applies in heavy traffic, not light traffic )

1. Read what the MN DOT says in my links above.
2. The zipper merge eliminates the shock wave from early merges
3. The zipper merge prevents 'jerks' from driving by you on that open lane ( they are doing nothing wrong )
4. using both lanes as long as possible will keep the average speed higher
5. zipper merge removes the "if you're not in my lane by now I'm not letting you in" mentality

I've done it both ways, Minnesota is pushing hard on the zipper merge, the zipper merge is less stressful and faster than early merging.


They are actually pushing that up here in Washington State as well, have been a few radio commercials about it. "Wait, Merge Late" or something like that. My FIL works for DOT and says that it is supposed to help the flow of traffic just like all of the traffic circles popping up around here.

He also says the biggest problem is the "your not getting in front of me" mentality and the fact that westerners have no clue how to properly navigate roundabouts, especially in heavy traffic. They are intended to help here but are almost having a negative effect. I lived in Germany for 8 years and was absolutely astounded at how fast the drivers over there would negotiate a large 2 lane roundabout.

I for one agree with Jim, when it says a lane is closed ahead I go ahead and get over. I do that because I have the room to get over and don't have to look like a douche stuck in the lane that is closing cause no one will let me in because I just passed a mile of stopped traffic and they are pissed at me. Trust me, I don't want to let that guy in either.

That's just me though, do what you want.


Jared


That zipper merge thing works in Illinois. They are all already driving in the left lane normally. The right lane is only used for passing in Illinois. So when one of those merge things comes up 50% of them move to the right lane trying to pass the others that are already in the left lane. Down the road a mile or so they get fight each other trying to line up again in the left lane.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: 230 Degrees Fahrenheit [message #257826 is a reply to message #257820] Mon, 04 August 2014 20:54 Go to previous messageGo to next message
lotsofspareparts is currently offline  lotsofspareparts   United States
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A Hamilto wrote on Mon, 04 August 2014 18:34
Keith V wrote on Mon, 04 August 2014 09:51
The RIGHT way is for no one to move out of the right lane until it ends. That way all traffic is moving as fast as possible and no one can zoom by and disturb the 'holier than thous' in the left lane. Because as we all know, if youre not already in the left lane they aint gonna let you in. So when someone does George Jestson into the left lane everyone has to hit the brakes and the resulting shock wave is what causes the long stops for no reason.

Google 'Zipper Merge'
http://www.dot.state.mn.us/zippermerge/
http://arstechnica.com/cars/2014/07/the-beauty-of-zipper-merging-or-why-you-should-drive-ruder/

Now let me explain how I handle jackdonkeys that think they are entitled by God to blow past everyone waiting their turn to enter the non-closed lane to shoehorn themselves in the front of the line.

I move over into the closING lane and move at the speed of the non-closING lane. When I get to the cones, the driver that was behind me when I was in the non-closING lane is so grateful that someone stood up to the jackdonkeys trying to get ahead of everyone else, they wave me in. And none of us are inclined to accommodate the jackholes that are on my bumper blowing their horns and flashing their lights and gesturing that I am number 1. And the point where the cones are has now become your "zipper" for the people that thought they were going to get in front of everyone else.


I wanted to do that this last Sunday (yesterday) but the CFO wouldn't let me. The south bound I-5 bridge over the Snoqualmie river (just before the Island Crossing Exit 208) is being rebuilt so they have essentially taken 6 lanes of north south 70mph traffic and crammed it onto the north bound bridge with 4 lanes. I got over early and waited in 5mph traffic and watched at least 150-200 cars just keep blowing by and throwing the brakes on at the last second. I mentioned to Tina how much faster traffic would be moving for us if I just kept the coach on the center line separating the open lane and the lane that was closing..... she wouldn't let me.

I get over early, I believe if every driver got over early when they had the chance instead of just cutting someone off at the cones, traffic flow would be better. I would rather all of the traffic do 40mph instead of 90% doing 5mph and the remaining 10% doing 70mph and then cutting someone off at the last second.

Jared


Jared & Tina Lazaron + 14yr old Daughter..... 77 Eleganza II "Recherché"..... 73 Canyon Lands 230 "Elephant"
Re: [GMCnet] 230 Degrees Fahrenheit [message #257850 is a reply to message #257746] Mon, 04 August 2014 23:53 Go to previous message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
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Senior Member
George,

IMHO you're running way too hot! The first thing I would do is get a new Robertshaw High Flow Thermostat 180 thermostat. Actually the second if you haven’t flushed and changed the coolant. See more comments at the bottom on coolants. The 2 thermostats listed are high flow and not HD thermostats. Our cooling systems have to get rid of a high heat load and do it under all conditions.

http://www.appliedgmc.com/prod.itml/icOid/582
http://www.summitracing.com/parts/mrg-4364/overview/

I have run this thermostat (330-180) in all my coaches since 1998 without any problems. My temp gauge indicates just a needle width over a quarter using the NAPA TS-6469 sender which I have also run in all my coaches since 1998. The gauge on your dash is just an indicator, it is the sender that sets the range of your indicated temperature. The stock GMC sender range is about 200 to 280 def F whereas the TS-6469 is about 155 to 255 deg F which is a more useful range. This problem was first published in the GMC Motorhome News by Cinnabar in the Dec 95 issue, almost 20 years ago. Automotive instrumentation is good, but if your within 1 to 2 percent of actual then they are within spec’s. It doesn’t matter if you're a few degrees off, what matters if that you sender is 10 or 15 percent or more off and then it is a problem.

Also see temp sender ranges.
http://gmcmotorhome.info/engine.html#sender

Your fan clutch might be too light of a unit and not spinning the fan fast enough under high temp load. Our fans are bigger in size and have a more aggressive pitch than fans that where used on the cars with smaller gas engines. The only exception being the 82 thru 84 Olds and Cadillac diesel cars, same diameter fan as ours but with much wider blades for more capacity. The 2797 and Heavy Duty AC Delco Fan Clutch part number 12529772 have an aggressive engagement and do roar, but they DO engage fully and move air and if your in a climate that is hot the majority of the time then you might consider using it. I have run the 2797 unit and it does make noise and have dropped backed to the 2749 unit as I have a custom air control package with a large scoop under the grill and air control thru the radiator and electric fans on the AC condenser. You can still hear it engage, but without the louder roaring sound. The AC Delco 15-4208 is comparable to the 2747 fan clutch. If you cannot not hear your fan clutch engage then you might be using a standard unit, part numbers 2705, NAPA TEM271305 and TEM273325 and should be avoided. As for a 2747 type unit you can also use Advanced Auto 215046, NAPA # TEM271303, Autozone # 922747 and AC Delco 15-4947. What condition is your fan shroud? The factory radiator shroud covered the radiator by 70% where kit provides full coverage. The 73 thru 76 would also benefit with the addition of radiator air baffle kit which directs the air flow thru the radiator. A front air dam spoiler is also a good addition.

Severe Duty Fan Clutch

or
http://goo.gl/zpLExT
http://www.appliedgmc.com/level.itml/icOid/944
Heavy Duty Fan Clutch

or
http://goo.gl/fPWY8U

or
http://goo.gl/TkxRZI

or
http://goo.gl/bTJIf1


Radiator Shroud
http://www.appliedgmc.com/prod.itml/icOid/584

Air baffle kit
http://www.appliedgmc.com/prod.itml/icOid/802

Front air spoiler
http://www.appliedgmc.com/prod.itml/icOid/1019

Another question, when was the last time that you changed your coolant and your radiator was flushed? If you haven’t done it in the last 3 years or don’t know when it was done last then you should consider a flush and replacing coolant and add a bottle of water pump lubricant. I also recommend using distilled water and not tap water when replacing the coolant. Some areas of the country have high mineral content in there water, out west especially. There are a number of coolant additives that can help too and increase the heat transfer of the coolant. I like the Hy-Per Lube Radiator Additive listed below.


or
http://goo.gl/gV5bFp


or
http://goo.gl/Rpzi6C

George, you do what you want and what you want to spend for parts.

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

On Aug 4, 2014, at 11:49 AM, George Beckman wrote:

> roy1 wrote on Sun, 03 August 2014 22:27
>> At those temperatures the clutch fan should have engaged and brought the temperature down too 190 or 200. Is it working?
>
>
>
> Thanks to Keith and Roy for mentioning the fan clutch. It is a new Delco. This was the first trip with it. I tried Delco after trying NAPA, O'Reilys,
> etc. using all the special magic numbers found here and in the crossover parts list from GMCMI.
>
> The Delco never roared like a turbo jet taking off, but it is not a Heavy Duty. I was trying to avoid the super duper heavy duty clutch. I did have a
> nice medium duty from O'Riely's that I liked and did hear it getting with it from time to time but for me most fan clutches last a year or two and
> fail. I am underwhelmed with this Delco. I don't like 220*, but I lost no sleep over it.
>
>
> --
> '74 Eleganza, SE, Howell + EBL
> Best Wishes,
> George
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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