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Cooling Tin Flaps
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Rhino1966
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PostPosted: Fri Sep 17, 2021 9:20 pm    Post subject: Cooling Tin Flaps Reply with quote

Just found out that my Type 4 motor does not have the flaps that go on each side of the cooling tin. How important is this on cooling the motor? I am not running any heater boxes and do not have any heat or defrosters.
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oprn
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PostPosted: Sat Sep 18, 2021 5:43 am    Post subject: Re: Cooling Tin Flaps Reply with quote

It makes no difference on cooling the engine down but it makes a big difference on getting it to warm up properly, stay warm enough, hold a tune and to the lifespan of the engine. The thermostat and flaps have nothing to do with heat and defrost and everything to do with keeping the engine at the correct temperature under changing load and weather conditions. Any effects on the heating system are incidental, not intentional.

Find all the correct parts and adjust them properly. Your engine will thank you by running better and lasting longer.
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FarmerBill
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PostPosted: Sat Sep 18, 2021 6:04 am    Post subject: Re: Cooling Tin Flaps Reply with quote

You will also need a 85-90C thermostat, pulley, and cable to open and close the flaps. I believe you can still get the thermostats new from Awesome Powder Coat.
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gt1953
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PostPosted: Sat Sep 18, 2021 7:56 am    Post subject: Re: Cooling Tin Flaps Reply with quote

I see you are in Arizona....even in the desert your engine would benefit from having those installed. Start sourcing out parts.
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jsturtlebuggy
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PostPosted: Sat Sep 18, 2021 8:14 am    Post subject: Re: Cooling Tin Flaps Reply with quote

The flap on the left side is very important to have as it directs air flow to the oil cooler. Without it being there air will flow will cross over top of oil cooler and and not down through it.
Hopefully you have the tin in place that sits on top of and under lip of fan housing.
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oprn
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PostPosted: Sat Sep 18, 2021 10:20 am    Post subject: Re: Cooling Tin Flaps Reply with quote

I forgot about the oil cooler on the type 4, yes that is so!
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FreeBug
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PostPosted: Sat Sep 18, 2021 1:06 pm    Post subject: Re: Cooling Tin Flaps Reply with quote

jsturtlebuggy wrote:
The flap on the left side is very important to have as it directs air flow to the oil cooler. Without it being there air will flow will cross over top of oil cooler and and not down through it.
Hopefully you have the tin in place that sits on top of and under lip of fan housing.


Exactly. It might be worth tracking down a stock setup.
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sjbartnik
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PostPosted: Sat Sep 18, 2021 2:03 pm    Post subject: Re: Cooling Tin Flaps Reply with quote

jsturtlebuggy wrote:
The flap on the left side is very important to have as it directs air flow to the oil cooler. Without it being there air will flow will cross over top of oil cooler and and not down through it.


This!!
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