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I'm not too fond of folded fin oil coolers
Date: March 19, 2017 04:41AM

This is on a 1962 Monza - the cooler is underneath the generator and tough to get to the clean. Can't really even see it.
Makes a better dirt trap than a cooler!


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: I'm not too fond of folded fin oil coolers
Posted by: Lane66m ()
Date: March 19, 2017 04:54AM

The one on my Greenbrier look similar but not as bad. Mine cleaned up well. I now have 2 folded fin coolers cleaned and ready to go. A spare for the Greenbrier, of course.

Here is how I cleaned up mine.

Take it off and soak it mineral spirits for a few days. Nylon bristle brush the major stuff off. Use air pressure to backflow the trash out of the fins. Another round of soaking in mineral spirits and air pressure, until you are satisfied fins are clean from side to side. Put in an ultra sonic cleaner with Simple Green for a day or two. Backflow with air pressure again and get it thoroughly dry. I used a extra fine bead blast process to final clean the panels. Air blast free of any grit. Throughout the process, look through the fins to ensure all trash and dirt/grit is removed.

I avoided chemicals to prevent any chemical damage to fins and solder.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: I'm not too fond of folded fin oil coolers
Posted by: irfgt ()
Date: March 19, 2017 05:52AM

1966-Corsa-GT-180 Wrote:
-------------------------------------------------------
> This is on a 1962 Monza - the cooler is underneath
> the generator and tough to get to the clean. Can't
> really even see it.
> Makes a better dirt trap than a cooler!


If it was cleaned every 25 to 30 years it would not be this clogged.

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Re: I'm not too fond of folded fin oil coolers
Posted by: Wagon Master ()
Date: March 19, 2017 06:28AM

irfgt Wrote:
-------------------------------------------------------
> 1966-Corsa-GT-180 Wrote:

>
> If it was cleaned every 25 to 30 years it would
> not be this clogged.


Agreed. It has taken a LONG time for that much scuz to accumulate. Plus a fairly good sized oil leak.

'64 Monza Coupe 140 4 speed
'61 700 Lakewood 95 4 speed
'69 Monza Convert. 140 Auto.

Been aircooled since 1973
Northwest Ohio

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Re: I'm not too fond of folded fin oil coolers
Posted by: ys063 ()
Date: March 19, 2017 09:12AM

Removing the cover plate and blowing out the crud is part of regular and routine maintenance. I prefer the folded fin coolers!

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Re: I'm not too fond of folded fin oil coolers
Posted by: Timothy Shortle ()
Date: March 19, 2017 09:13AM

I think the same argument can be heard (seen) on Corvair engines. But you are right Dan, the 3 plate oil cooler is probably easier to clean. I think Chevrolet made a great car with the Corvair. Too bad they sold them to idiots.

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Re: I'm not too fond of folded fin oil coolers
Date: March 19, 2017 09:49AM

According to the owner's manual - it is a 5,000 mile maintenance item.
The drawing shown for access and cleaning is a fictional situation!
Just try to get there while that generator is bolted in place!


Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 140 Corsa ~ ~ 1965 Monza 140/4 'Vert Sierra Tan/Fawn ~ 1964 Monza 'Vert (SOLD) ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 Evening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: I'm not too fond of folded fin oil coolers
Posted by: Spyderman64 ()
Date: March 19, 2017 10:35AM

The folded fin requires occasional maintenance, but it is probably the most efficient one (along with the 12-plate.) The 3-plate cooler is next to useless in my opinion.

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Re: I'm not too fond of folded fin oil coolers
Posted by: Timothy Shortle ()
Date: March 19, 2017 10:47AM

The 3 plate cooler would be good for stopping a full oil pressure leak. But not too good at cooling engine oil.

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Re: I'm not too fond of folded fin oil coolers
Posted by: Spyderman64 ()
Date: March 19, 2017 11:02AM

Touche'

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Re: I'm not too fond of folded fin oil coolers
Posted by: caroseiii ()
Date: March 19, 2017 11:27AM

I might point out that the cylinders appear to have same crud buildup. I think your top cover has an oil leak or spray which is clogging your cooler.
Crawford Rose

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Re: I'm not too fond of folded fin oil coolers
Posted by: JimBrandberg ()
Date: March 22, 2017 05:46AM

In order to help you out, I will trade even up clean 8 plate oil coolers for dirty folded fin.
I hadn't seen the word chaff for a while, it could be debris from threshing or light jesting talk.
Jim Brandberg
Isanti, MN
CorvairRepair.com

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