Dune Buggy cooling

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Sylvester
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Re: Dune Buggy cooling

Post by Sylvester » Sun Oct 16, 2011 4:32 pm

Latest post of the previous page:

bajaman72 wrote:Image
Would it make sense to put these on a Bus engine in a Bus?
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RSorak 71Westy
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Re: Dune Buggy cooling

Post by RSorak 71Westy » Sun Oct 16, 2011 5:08 pm

No I dont think they are needed if you are running lower tins.
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bajaman72
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Re: Dune Buggy cooling

Post by bajaman72 » Sun Oct 16, 2011 7:03 pm

This engine is going in my 72 bus just to make it mobile.
Projects:
1972 Deluxe Transporter (2nd Driver) 2.0L - 091, dual Dells, Bug Pack exhaust. Camper Converted
1973 Baja (another 2nd Driver &Toy) Stock 1600 DP, dual Kadrons, Stinger

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Re: Dune Buggy cooling

Post by vdubyah73 » Sat Oct 22, 2011 1:51 am

those are type 3 cooling parts. different fan, different fan housing, different airflow design. use type 1 tins with type 1 fan shroud, use type 3 tins with type 3 fan shroud.
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Re: Dune Buggy cooling

Post by ruckman101 » Sat Oct 22, 2011 9:40 am

vdubyah73 wrote:those are type 3 cooling parts. different fan, different fan housing, different airflow design. use type 1 tins with type 1 fan shroud, use type 3 tins with type 3 fan shroud.

Ah. Thanks.

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bajaman72
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Re: Dune Buggy cooling

Post by bajaman72 » Sat Oct 22, 2011 10:27 am

The "cool tins" are a type III part?? They are being sold as super cool tins for baja/rail (open end).
Projects:
1972 Deluxe Transporter (2nd Driver) 2.0L - 091, dual Dells, Bug Pack exhaust. Camper Converted
1973 Baja (another 2nd Driver &Toy) Stock 1600 DP, dual Kadrons, Stinger

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Re: Dune Buggy cooling

Post by vdubyah73 » Sat Oct 22, 2011 4:02 pm

they are used by people that eliminate the sled tins. why would anyone want to leave their push rod tubes exposed, let alone second guess the engineers that figured out how to keep these things from melting?
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bajaman72
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Re: Dune Buggy cooling

Post by bajaman72 » Sun Oct 23, 2011 8:11 am

My BAJA did not come FROM THE FACTORY like this... but it came to ME like this. I'm not running heater boxes (by choice) and my pushrod tubes ARE protected (by my skidplate) My baja has become my DD (75 miles each way) and has never indicated its running hot unless im pushing it.
Projects:
1972 Deluxe Transporter (2nd Driver) 2.0L - 091, dual Dells, Bug Pack exhaust. Camper Converted
1973 Baja (another 2nd Driver &Toy) Stock 1600 DP, dual Kadrons, Stinger

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Amskeptic
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Re: Dune Buggy cooling

Post by Amskeptic » Wed Oct 26, 2011 10:05 pm

bajaman72 wrote:The "cool tins" are a type III part?? They are being sold as super cool tins for baja/rail (open end).
The Type III deflectors are a decent improvement for upright cooling. They utilize the increasing knowledge of the VW engineers. The Type 4 deflectors are a further evolution of the same concept: by blocking the center area between the barrels and on up to the heads' intake ports, you get far more even temps across the cylinder heads and barrels. They allow more air to go around the outside surfaces of the barrels and to cool more exhaust port area and allow more heat to build in the intake area. These deflectors do not necessarily drop temperatures so much as help even out the dramatic temperature differential between the intake and exhaust sides, this could only help prevent cracks and dropped intake seats.

Jake Raby mentioned in 2005 that Type 3 tins drew more horsepower , and incorrectly concluded that the "restriction" caused it. But in actuality, any resistance in airflow would cause a drop in horsepower draw due to the fact that a fan's work is to move air, if you prevent it from moving air, it does not work as hard (see: vacuum cleaner motor speeds up when you stop airflow at hose).
Colin
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Chloe - 1970 bus . . . . . . . . . . . 206,787 miles
Naranja - 1977 Westfalia . . . . . 93,996 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 72,113 miles

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Re: Dune Buggy cooling

Post by vdubyah73 » Thu Oct 27, 2011 5:40 am

how come vw didn't use these type 3 pieces in type 1 applications? they continued making type 1 for years after the end of type 3 production.
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bajaman72
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Re: Dune Buggy cooling

Post by bajaman72 » Thu Oct 27, 2011 10:40 am

Thanks for the hows and whys Colin. Helps to understand it more than doing it because I'm told to.
Projects:
1972 Deluxe Transporter (2nd Driver) 2.0L - 091, dual Dells, Bug Pack exhaust. Camper Converted
1973 Baja (another 2nd Driver &Toy) Stock 1600 DP, dual Kadrons, Stinger

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Amskeptic
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Re: Dune Buggy cooling

Post by Amskeptic » Sun Nov 13, 2011 5:34 pm

vdubyah73 wrote:how come vw didn't use these type 3 pieces in type 1 applications? they continued making type 1 for years after the end of type 3 production.
Well, ask my engine what kind of an "expert" I am on the why and wherefores of VW's decision-making ... I can't get my 1600 stock bus heads to run anywhere near cool at 65.

The Type 3 deflectors were absolutely necessary for an engine with a crankshaft driven fan at one end of the engine. You had to seriously dam up the air to get a consistent air pressure through the entire head/cylinder runs. Same with the Type 4 engine.

The Type 1 engine has the fan right up over the middle where simple cylinder deflectors did the job just fine. Now why would VW add complexity where it was not necessary?

As for Type 3 deflectors on a Type 1 engine, I have no personal experience with whether or not they work at reducing overall engine temps. I personally think that they would not help overall cooling, but they would help a great deal with keeping the head temps more evenly distributed.
Colin
BobD - 1978 Bus . . . . . . . . . . .111,130 miles
Chloe - 1970 bus . . . . . . . . . . . 206,787 miles
Naranja - 1977 Westfalia . . . . . 93,996 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 72,113 miles

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