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b4thea4
Samba Member
Joined: March 24, 2011
Posts: 48
Location: Beaverton, OR
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 Posted: Sat Apr 11, 2020 5:51 pm Post subject: Decklid prop for cooling |
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I've searched and can't find what I'm looking for and it is very possible I'm using the wrong wording.
I'm trying to find a prop to keep the decklid open only an inch or so when driving in the hot months. It would be mounted where the decklid latches to the body not on the hinge side.
The guy that built the engine remembers seeing someone that made them but it could have been decades ago.
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51144
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sat Apr 11, 2020 6:12 pm Post subject: Re: Decklid prop for cooling |
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What's gone so horribly wrong in there that makes you think you need extra cooling? 250HP drag motor?
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b4thea4
Samba Member
Joined: March 24, 2011
Posts: 48
Location: Beaverton, OR
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| Posted: Sat Apr 11, 2020 6:20 pm Post subject: Re: Decklid prop for cooling |
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| busdaddy wrote: |
| What's gone so horribly wrong in there that makes you think you need extra cooling? 250HP drag motor? |
Good news is nothing has gone horribly wrong! I'd like to keep it that way.
I'm running a 2110 in a EZ Camper. I'd like to have something available to help with cooling when I'm loaded with gear, climbing hills in warm weather.
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panel
Samba Member
Joined: December 02, 2001
Posts: 1091
Location: Victoria B.C. Canada
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| Posted: Sat Apr 11, 2020 7:24 pm Post subject: Re: Decklid prop for cooling |
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How's the cooling in your bus now ? Stock ? Do you have an external oil cooler ? Any gauges to monitor head or oil temps ?
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b4thea4
Samba Member
Joined: March 24, 2011
Posts: 48
Location: Beaverton, OR
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| Posted: Sat Apr 11, 2020 7:29 pm Post subject: Re: Decklid prop for cooling |
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| panel wrote: |
| How's the cooling in your bus now ? Stock ? Do you have an external oil cooler ? Any gauges to monitor head or oil temps ? |
Doghouse oil cooler and no temp gauges. Just running a tach.
There are a lot of decklid standoffs for beetles to help with airflow in the engine compartment, but not much for the bus.
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76935
Location: Sneaking up behind you
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| Posted: Sat Apr 11, 2020 7:38 pm Post subject: Re: Decklid prop for cooling |
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Tennis ball?
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panel
Samba Member
Joined: December 02, 2001
Posts: 1091
Location: Victoria B.C. Canada
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| Posted: Sat Apr 11, 2020 8:23 pm Post subject: Re: Decklid prop for cooling |
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| b4thea4 wrote: |
| There are a lot of decklid standoffs for beetles to help with airflow in the engine compartment, but not much for the bus. |
Might have to due with the shape of the back of the vehicle ?
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Terry Gaudet
Samba Member
Joined: March 11, 2004
Posts: 399
Location: New Brunswick, Canada
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| Posted: Sun Apr 12, 2020 3:39 am Post subject: Re: Decklid prop for cooling |
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Hey B4thea4,
If you can picture the hot air coming out of the motor and flowing under it to the back of the bus, this will help with a visual. If you prop open the bottom of the decklid it will simply help this hot air re-enter the engine bay and back into your fanshroud. So basically you would be making things worst as you will be re-circulating hot air. If you prop the top part of the decklid where the hinges are, it will make things worst because rain and crap will enter your engine bay.
Before making any changes, I would suggest you install cylinder head temperature and oil temperature guages to see how happy the motor is. Then go from there.
Best of luck
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Troytempest69
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Joined: April 12, 2017
Posts: 85
Location: Wales
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pyrOman
Fire Master
Joined: July 21, 2003
Posts: 12408
Location: Over 2002 posts deleted!
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| Posted: Sun Apr 12, 2020 6:23 am Post subject: Re: Decklid prop for cooling |
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A properly built engine will not have overheating issues. Some people have the opinion that a bigger displacement engine in a bus “will run hot”. In my experience it doesn’t have to be so. I run a 2276 in the Dormy and even when pulling the heavy assed trailer it runs kool as a cucumber. 
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WM971252
Samba Member
Joined: September 10, 2004
Posts: 1781
Location: Franklin CT
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| Posted: Sun Apr 12, 2020 7:29 am Post subject: Re: Decklid prop for cooling |
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Very unscientific but....
Have a VDO oil temp gauge T ed at the oil idiot light and have done lots of “tests” to make it run cooler....
Proping the deck lid was the worse thing we did. |
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sled
Samba Member
Joined: February 16, 2005
Posts: 6179
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| Posted: Sun Apr 12, 2020 8:38 am Post subject: Re: Decklid prop for cooling |
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run a small remote oil cooler with fan.
or, cut a hole in the forward engine tin on the passenger side of the engine, attach a duct and run it forward and down by the torsion housing to pick up more cool air.
I have done the hole/duct method and it definitely helps.
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panel
Samba Member
Joined: December 02, 2001
Posts: 1091
Location: Victoria B.C. Canada
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 24757
Location: Olympia Wash Rinse & Repeat
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| Posted: Sun Apr 12, 2020 12:47 pm Post subject: Re: Decklid prop for cooling |
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| b4thea4 wrote: |
Doghouse oil cooler and no temp gauges. Just running a tach. |
Modify the fan shroud to install the type 4 cooler that is 40% bigger.
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Culito
11010101
Joined: December 07, 2006
Posts: 5866
Location: Columbia Missourah
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| Posted: Sun Apr 12, 2020 2:28 pm Post subject: Re: Decklid prop for cooling |
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Any pics of these installed?
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Troytempest69
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Joined: April 12, 2017
Posts: 85
Location: Wales
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LAGrunthaner
Samba Member
Joined: March 18, 2007
Posts: 5509
Location: 1st Coast
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| Posted: Mon Apr 13, 2020 6:42 am Post subject: Re: Decklid prop for cooling |
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I'm still learning but I have heard that many times pyrOman, how many pounds are you pulling? That will be my next step to be sure my engine is set up properly before heading out any where of great distance in the summer.
| pyrOman wrote: |
| A properly built engine will not have overheating issues. Some people have the opinion that a bigger displacement engine in a bus “will run hot”. In my experience it doesn’t have to be so. I run a 2276 in the Dormy and even when pulling the heavy assed trailer it runs kool as a cucumber. |
I'll guess that people without a Facebook account can't see these so I posted the pics, very nice and I've seen these before, although I'll assume the correct tin, seals and properly rebuilt engine helps too 
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| Lind wrote: |
| Have you considered simply starting with a nicer bus? I don't know what your skills are, but the race is easier if you can see the finish line. If you are not a runner, don't start off doing a marathon. |
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scottvw
Samba Member
Joined: November 17, 2004
Posts: 2821
Location: Centennial, CO
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| Posted: Mon Apr 13, 2020 7:56 am Post subject: Re: Decklid prop for cooling |
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I have a 2276 in my bus. Engle 110 cam, 8.3:1 compression ratio. 40mm carbs. Big valve heads.
I would recommend you put a larger sump on it and an external oil cooler with a fan that kicks on at 180 degrees.
I burned up a 1776 on a round trip adventure from CO to CA a number of years back. Adding the sump and cooler made a huge difference. I did the trip last May and it ran awesome. |
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Clara
Samba Member
Joined: June 14, 2003
Posts: 12400
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| Posted: Mon Apr 13, 2020 10:40 am Post subject: Re: Decklid prop for cooling |
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| panel wrote: |
| How's the cooling in your bus now ? Stock ? Do you have an external oil cooler ? Any gauges to monitor head or oil temps ? |
x2
Does it actually run hot?
IME I just put all the tin and seals in place, including thermostat, and it doesn't run hot.
Some of my buses have oil temp gauges, some not. I've also used the spit test and the laser pointer thermometer and the thermometer in oil dipstick, and a thermocoupler under a spark plug hooked up to a laptop.
Adding the scoops at the cooling vents will make it run cooler.
Does it need to run cooler?
If you see a bus with oil drops all over the backside, it leaks oil.
The air flow picks up the air and smacks it against the back of the bus.
So it make sense that the open engine lid could make the engine run warmer. |
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b4thea4
Samba Member
Joined: March 24, 2011
Posts: 48
Location: Beaverton, OR
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| Posted: Mon Apr 13, 2020 10:53 am Post subject: Re: Decklid prop for cooling |
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There is some great information here! Thank you all. It does seem pointless to bring hot air in to the engine compartment when trying to improve airflow.
I'm going to start with capping the heat riser openings on the engine tin to limit heat coming in as I kept the original german tin when switching to dual carbs. I do have a larger sump which will help with oil temps in the warm weather, however it takes a lot longer time to warm up in winter months. So I don't want to make any permanent adjustments.
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