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Old 01-17-2014, 09:12 AM   #121
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The coolant never flowed right because one turbo is always warmer than the other, and once the warmer turbo cooled, the water flow would reverse, and back and forth and they would stay at operating temp for hours.

that's why I run a precision turbo now, no coolant lines.
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Old 01-17-2014, 09:29 AM   #122
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Cooling the center section by whatever method one can devise is intended to reduce the operating temps right there to reduce the damage to the oil's high temp stability additives. This alone was intended to keep the oil alive considerably longer by vastly reducing the slow but sure damage to the oils high temp adatives that keep it from charing.

The entire scheme has worked very well.

Throw in the some better capability of synthetics and the oil issue of turbos is solved.

The entire problem came about because early OEM turbo (70's/80's) makers failed to mention the more frequent oil change intervals necessary.

With old mineral oils, no water cooling, no turbo timers, no nothin, except 2500 mile oil change intervals and all was ok then. Just as it would be today.

corky
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Old 01-17-2014, 10:01 AM   #123
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Quote:
Originally Posted by Corky Bell View Post
Cooling the center section by whatever method one can devise is intended to reduce the operating temps right there to reduce the damage to the oil's high temp stability additives. This alone was intended to keep the oil alive considerably longer by vastly reducing the slow but sure damage to the oils high temp adatives that keep it from charing.

The entire scheme has worked very well.

Throw in the some better capability of synthetics and the oil issue of turbos is solved.

The entire problem came about because early OEM turbo (70's/80's) makers failed to mention the more frequent oil change intervals necessary.

With old mineral oils, no water cooling, no turbo timers, no nothin, except 2500 mile oil change intervals and all was ok then. Just as it would be today.

corky

Do you even 20?
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Old 01-17-2014, 10:05 AM   #124
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Random thought: Turbo corvair's did not have wastegates.
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Old 01-17-2014, 10:09 AM   #125
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Random Thought: My dad used to autox his corvair, it did not have the turbo.
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Old 01-17-2014, 10:12 AM   #126
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Random thought-- one of my dad's friends had a v8 swapped corvair.
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Old 01-17-2014, 10:22 AM   #127
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One of my good friends father in law owns a Covair and is currently a member of the Corvair club of America, or whatever it is named. He actively goes to meets on the east coast with it.
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Old 01-17-2014, 10:25 AM   #128
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Quote:
Originally Posted by triple88a View Post
I love the twin turbo but unless u're blocking one at low rpm whats the point?
You have 6500 posts but are ignorant of/to TurboTim's old twin turbo set-up?
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Old 01-17-2014, 10:28 AM   #129
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I used to pick the Corsair when I'd play WWII flying games.
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Old 01-17-2014, 10:29 AM   #130
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i forgot water can't flow if it's not in a straight line hose from low to high. Probably why my garden hose never works unless i unravel it and stand on the roof.

this is also probably why normal siphoning never works either. I was never EVER able to siphon water out of my fish tank to clean it, or gas from a gas tank, because i never had a perfectly straight hose.

i also dont understand phsyics and thermal dynamics.

exactly it all has to do with pressure like I was sayin at the begining. I notice when I turn off my car I can hear water moving through the turbo water lines. Im a firm believer that water will travel from the hottest point to a less hot point causing circulation in the cooling system. Hotter the water the faster the molecules move the higher the pressure.

Just a side note I pretty much gave up on Garrett ever since I found out my 2560r has to be ported. Completely unrelated to the topic but I cant figure why the hell they sold the turbo without considering a free flowing exhaust.
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Old 01-17-2014, 10:30 AM   #131
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Maybe the "boiling" OP is hearing is just water moving through the lines and chra.......
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Old 01-17-2014, 10:31 AM   #132
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Quote:
Originally Posted by ScottyP3821 View Post
exactly it all has to do with pressure like I was sayin at the begining. I notice when I turn off my car I can hear water moving through the turbo water lines. Im a firm believer that water will travel from the hottest point to a less hot point causing circulation in the cooling system. Hotter the water the faster the molecules move the higher the pressure.

Just a side note I pretty much gave up on Garrett ever since I found out my 2560r has to be ported. Completely unrelated to the topic but I cant figure why the hell they sold the turbo without considering a free flowing exhaust.
this is pretty off topic...
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Old 01-17-2014, 10:34 AM   #133
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Quote:
Originally Posted by 18psi View Post
Maybe the "boiling" OP is hearing is just water moving through the lines and chra.......
No, thats Mr. Coffee.

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Old 01-17-2014, 10:37 AM   #134
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Quote:
Originally Posted by Braineack View Post
this is pretty off topic...
Sorry back on topic check out this corvair



Are those hub caps on steelies? WTF

EDIT ON STEEELIES x2 WTF
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Old 01-17-2014, 11:42 AM   #135
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Quote:
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No, thats Mr. Coffee.

Spaceballs is currently streaming on Netflix in HD.
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Old 01-17-2014, 01:03 PM   #136
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Quote:
Originally Posted by Braineack
i forgot water can't flow if it's not in a straight line hose from low to high. Probably why my garden hose never works unless i unravel it and stand on the roof.
If the coolant boils and bubbles it will hinder the flow by being stuck in a high point.
Additionally boiling coolant absorbs a lot of heat. You want those steam bubbles to flow out; if there's a high spot near the turbo, the steam bubble may "grow" all the way down to the CHRA.

There's a reason the model T's convective flow has all-uphill flow.
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Old 01-17-2014, 01:19 PM   #137
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stop ruining it.
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Old 01-17-2014, 01:26 PM   #138
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Random thought: My MX6 GT (factory 80s turbo car) has a factory sticker specifying 5000 mile oil change intervals for "normal use."
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Old 01-17-2014, 01:27 PM   #139
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The model T parked in our hallway at work has a waterpump driven by a sewen together leather belt. Pat. Appli. for

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Old 01-17-2014, 01:38 PM   #140
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