Outside Air Ind VS Rain
July 28th, 2012, 07:43 PM
#1
No Dr. but play 1 on TV
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Join Date: Feb 2012
Posts: 100
Outside Air Ind VS Rain
Hi All,
Still thinking through my new car.
I plan to use this as a half time driver. Therefore I will get caught in the rain at some point.
How bad is driving in the rain when you have the OAI?
Opinions please.
Still thinking through my new car.
I plan to use this as a half time driver. Therefore I will get caught in the rain at some point.
How bad is driving in the rain when you have the OAI?
Opinions please.
Last edited by Benton Quest; July 29th, 2012 at 04:02 AM.
July 28th, 2012, 08:06 PM
#2
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Location: Medford, Oregon
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The factory 70-72 OAI bottom had I believe 5 small holes drilled in it to drain water. I drove a 1971 with OAI for about 10 years without drain holes and never had a problem. That was in Oregon, but depending on what part of the country your in that may or may not be an issue. During high school I lived near Tampa Florida for a couple years and remember the summer rain storms. I've kiddingly said you could be three steps from the door when the first drop hits but before you can get inside you'll be soaked to the skin! If you drive in tropical storms like that you may need drain holes 
John
John
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July 29th, 2012, 03:52 AM
#5
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Join Date: Feb 2009
Location: Brazil Indiana
Posts: 11,517
to add to what john said, the plastic top also has provisions to address this. what little water gets that far down the hood will mostly land on the plastic top. the top is made to run water down to the edges and then runs it all to the back. the back of the top has a drain hole on it that drains right on top of the distributor cap
. it is a bad place to drain but is ok if you add a short hose to run the water down behind the distributor. any water that gets past the OAI flapper wil get out the holes that John is talking about. if you don't run the original setup the water will run on top of the engine.
. it is a bad place to drain but is ok if you add a short hose to run the water down behind the distributor. any water that gets past the OAI flapper wil get out the holes that John is talking about. if you don't run the original setup the water will run on top of the engine.
July 29th, 2012, 06:34 AM
#8
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Location: Brazil Indiana
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July 29th, 2012, 09:59 AM
#9
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Join Date: Sep 2006
Location: Richmond, TX
Posts: 190
The 5 holes in the air cleaner base were an afterthought they learned the hard way after releasing the '69 H/O. Without them, the air cleaner base would fill up with water WHEN PARKED and the flapper door is sitting open (due to no engine vacuum and the seams around the scoop that the 70-2 don't have to worry about). The water would then drain into the carb. Turn over the engine with water in a cylinder or two and bend a rod (happened to me with an aftermarket air cleaner on mine before finding the proper one).
Olds put out a dealer service bulletin for the 69 H/O to drill the 5 holes in the base. I gather they had to warranty some engines before learning this lesson the hard way.
July 30th, 2012, 07:33 AM
#10
'87 Delta 88 Royale
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Location: Margate, England
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