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> 2.7 6 without engine tin always cool?
RickS
post Jun 22 2017, 10:57 PM
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Think this guy may be fulla BS but had a 2.7 with no tin and claimed no matter how hard he ran it, the temp never topped 210. Had no front mounted cooler, just the engine mount cooler.

So is he full of it, or are the rest of us stoopid?

(No Rick, you be the stoopid one for not calling his BS)
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Dave_Darling
post Jun 22 2017, 11:25 PM
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Either full of it, or he's not measuring the right thing...

--DD
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Kansas 914
post Jun 23 2017, 06:37 AM
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QUOTE(Dave_Darling @ Jun 22 2017, 11:25 PM) *

Either full of it, or he's not measuring the right thing...

--DD

(IMG:style_emoticons/default/agree.gif)

Something isn't right. If it was true I would be pulling the tin off of my 2.7L as it gets to 220 on long hill climbs.
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mepstein
post Jun 23 2017, 07:07 AM
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A lot of race cars don't use tin but hard to keep a street engine cool.

http://www.914world.com/bbs2/index.php?sho...p;hl=Engine+tin
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Jeff Hail
post Jun 23 2017, 07:34 AM
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I've seen quite a few 914 track cars with no tins or engine shelves. Shrouding and cylinder dividing tins only. The 914 engine compartment is far larger than a 911 and also has a larger source of intake air. The biggest drawback is dirt and dust collection above the cylinders which will accumulate on the cooling fins. Forced air in the front top of the engine and exhausted out the bottom and everywhere else for that matter.

I ran this question past a couple of people a few years ago. Dave from TRE and also Mac Tilton. Both agreed on the dirty air issue but history proves it isn't really an problem on a mid engine car. Look at all the old mid engine Porsche race cars which had nothing except shrouded fans. Those cars had way more heat going on than a street car.

911's on the other hand are very different. Air is brought into the engine compartment from the tail of the car then forced through the engine and pushed out the bottom.

If the guy with the 2.7 is in a 911 I would call borderline BS unless he has removed the decklid. If its in a 914 I would not. My build was based on low weight so shelves and tins are removed which was based on research.
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Dave_Darling
post Jun 23 2017, 09:29 AM
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Race cars do not idle at stop lights. They do not run for long periods of time with their fans turning low speeds. They do not re-ingest air that is warmed up already, because that air is already about 15 miles behind them. Many racing 914s without all of the engine tin also have direct high-pressure cold air ducted directly to the fan inlet. Most of us with street cars do not want a "sewer pipe" running through the cockpit...

Race engines get torn down often, especially the very high-performance ones.

Race cars are not street cars. You have to be very very careful when applying things from one realm to the other.

--DD
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porschetub
post Jun 23 2017, 02:06 PM
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I think that is stretching the truth a bit , 210 is hardly running cool.
Try being underneath the car with the engine running the amount hot air coming out is huge,no way the fan isn't sucking that up without engine tin.
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Elliot Cannon
post Jun 23 2017, 02:48 PM
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Didn't Joe O'Brian's 3.6 not have cooling tin? (IMG:style_emoticons/default/smile.gif)
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Optimusglen
post Jun 23 2017, 09:21 PM
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Speaking of tins. Does anyone make a set of fiberglass tins for a 6 in a 914?
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Dtjaden
post Jun 24 2017, 12:00 AM
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QUOTE(Optimusglen @ Jun 23 2017, 08:21 PM) *

Speaking of tins. Does anyone make a set of fiberglass tins for a 6 in a 914?


Getty Design makes 914-6 engine "tin".
http://www.gettydesign.com/914tailbases/91...ngine-shrouding
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pete-stevers
post Jun 24 2017, 06:11 AM
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I recall Trekkor didn't run tins on his race car.... (IMG:style_emoticons/default/idea.gif)
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6freak
post Jun 24 2017, 06:47 AM
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QUOTE(pete-stevers @ Jun 24 2017, 05:11 AM) *

I recall Trekkor didn't run tins on his race car.... (IMG:style_emoticons/default/idea.gif)

key word there Steve " race" car there always moving as fast, as mentioned above
id think you be hard pressed to keep any street car engine cool with out the proper ducting and tins
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mb911
post Jun 24 2017, 06:50 AM
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QUOTE(Optimusglen @ Jun 23 2017, 07:21 PM) *

Speaking of tins. Does anyone make a set of fiberglass tins for a 6 in a 914?

Attached Image

I have some wood bucks i would borrow you to make steel ones if you wanted?
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GeorgeRud
post Jun 24 2017, 07:43 AM
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I always figured that Porsche wouldn't spend the money on things if they didn't have to, so I'd recommend both the tins and a front oil cooler. The lack of front coolers on the US bound 2.7s were probably contributing to the issues they had ( the European 2.7s did have front oil coolers, though just the rude entry trombones).
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IronHillRestorations
post Jun 24 2017, 09:31 AM
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I'd be concerned if the oil temps didn't get 210 or above.
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barefoot
post Jun 24 2017, 12:31 PM
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You don't need no stinkin cooling tins:

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SirAndy
post Jun 25 2017, 03:03 PM
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QUOTE(barefoot @ Jun 24 2017, 11:31 AM) *
You don't need no stinkin cooling tins:

Just sitting there, not running? Sure, no tins required.


Fire that thing up, go for a spin around the corner, get stuck in stop and go traffic and start counting your money for the engine rebuild you'll need after the engine seized.
(IMG:style_emoticons/default/shades.gif)
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gms
post Jun 25 2017, 03:32 PM
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QUOTE(Optimusglen @ Jun 23 2017, 10:21 PM) *

Speaking of tins. Does anyone make a set of fiberglass tins for a 6 in a 914?

Yes I have the molds
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IronHillRestorations
post Jun 26 2017, 10:36 AM
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Those are cool Glennn!
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johnhora
post Jun 26 2017, 03:06 PM
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QUOTE(SirAndy @ Jun 25 2017, 01:03 PM) *

QUOTE(barefoot @ Jun 24 2017, 11:31 AM) *
You don't need no stinkin cooling tins:

Just sitting there, not running? Sure, no tins required.


Fire that thing up, go for a spin around the corner, get stuck in stop and go traffic and start counting your money for the engine rebuild you'll need after the engine seized.
(IMG:style_emoticons/default/shades.gif)



1/4 Mile Run Maybe (IMG:style_emoticons/default/smile.gif)
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