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Engine identification
Posted by: Pietpower ()
Date: June 24, 2009 05:55PM

Hello folks,

Just bought three Corvair engines this weekend. I am having trouble identifying one of them. The head serial numbers indicate they are a 1964 95 hp engine. It has the 8409 crank, but I have been unable to decipher the case number which ends in 6F. Can anyone help? Thanks.

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Re: Engine identification
Posted by: 62corvairjunky ()
Date: June 24, 2009 06:26PM

Post a pic of the vin #'s. I have no listings for a 6F.

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Re: Engine identification
Posted by: gwydionjhr ()
Date: June 24, 2009 06:42PM

Hasn't he already answered his own question? It's the heads and crank that determine what an engine actually is (cam & dizzy to a lesser extent), all the block tells you is what the block was from originally.

Why would knowing the VIN help?

The block code is stamped right in front of the oil filler tube, down low, behind where the top shroud comes down to the block. It's the last one/two letters that count.

Regards,
Joel Rushworth
1961 Rampside w/Deluxe Scamper Camper
1966 Corsized Cdn Monza Coupe
1967 UV #292
"Kick the Hell out of the Status Quo" - Ed Cole

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Re: Engine identification
Posted by: 62corvairjunky ()
Date: June 24, 2009 09:21PM

I have had so many mixed engines that I always like to see all #s.
Most likely wouldn't matter If 110 block (891 cam) w/95 heads,but I would still like to know. I've seen 140 heads on an 80 hp motor. I know not the 8409 crank, but you know what I mean. these engines have been around long enough for some of them to get really messed up. smiling smiley

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Re: Engine identification
Posted by: Curtis ()
Date: June 24, 2009 09:43PM

"140 heads on an 80 hp motor"


Does not compute... There would have to be a lot of work done to that block/cylendars to get 140 heads to work.


Milwaukee, Wi

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Re: Engine identification
Posted by: Pietpower ()
Date: June 24, 2009 10:24PM

Hi again,

I tried to get a good pic of the number but it didn't work out. The full number on the case is T I 2 2 3 6 F. Thanks for the input thus far.

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Re: Engine identification
Posted by: 62corvairjunky ()
Date: June 24, 2009 10:35PM

No, it's actually very simple, two ways.

first, you can simply wrap .025 shim stock around the top of the jugs,similar to what GM did with the 64 jugs to make them work with 65 heads.Also this mod is discussed in How to hotrod corvair engines.

second,and maybe better,is to use 65 or later jugs. they fit right in with no modification.But remember,you will get compression drop when you use late heads on an early moter. and compression increase using early heads on a late moter.

by the way, this moter seemed to have been built by someone with just enough knowledge to get it wrong. Reverse cam w/no reverse oil pump gearing.I bet he went nuts trying to start it. completely wrong timing you know.it was still connected to the tranaxle with corvair rotating starter.By the way, he used the second method for making the heads fit.

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Re: Engine identification
Posted by: 62corvairjunky ()
Date: June 24, 2009 10:46PM

Pietpower Wrote:
-------------------------------------------------------
> Hi again,
>
> I tried to get a good pic of the number but it
> didn't work out. The full number on the case is T
> I 2 2 3 6 F. Thanks for the input thus far.


Like joel said,you got the long stroke moter for sure and thats what counts.
There are three stock cams for the long stroke,(889 95 hp),(891 110,140,180hp),(304 110,140),not sure about from the factory,but I think it was the GM replacement for 95 and 180 also.
I haven't a clue what the F indicates.

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Re: Engine identification
Posted by: 4carbcorvair ()
Date: June 24, 2009 10:47PM

Are you sure it's not an RF or ZF or AF?

--------------------------------
Ronnie
Southern Maine.
[www.dirigocorvairs.com]
66 Corsa Convertible, 140, 4sp.




It doesn't leak, it's marking it's territory.

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Re: Engine identification
Posted by: Pietpower ()
Date: June 24, 2009 11:09PM

If its not a 6 the only other possibility is a lower case "b". I have a twin to the engine in question and they are both stamped the same.

So the 8409 crank means that I have a 164? cubic inch engine?

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Re: Engine identification
Posted by: Geardo ()
Date: June 25, 2009 03:59AM

Quote
So the 8409 crank means that I have a 164? cubic inch engine?


Affirmative.

You building a aircraft engine?

64 Cessna 150
65 Corsa Vert 140hp 4sp
87 Corvette Z-52 coupe auto
92 SAAB 900S vert 5sp
01 SAAB 9-3 SE turbo vert auto

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Re: Engine identification
Posted by: gwydionjhr ()
Date: June 25, 2009 04:43AM

If it's an aircraft motor you're building the only thing that really matters about the block (other than it's overall condition) is that it has the extra re-inforcing horizontal ribs on the front right side of the block by cyl #5.

If you're going to do a 3.1L aircraft motor the smaller '64 combustion chambers are going to require some very careful work to bring the compression ratio down to something reasonable.

Regards,
Joel Rushworth
1961 Rampside w/Deluxe Scamper Camper
1966 Corsized Cdn Monza Coupe
1967 UV #292
"Kick the Hell out of the Status Quo" - Ed Cole

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Re: Engine identification
Posted by: Pietpower ()
Date: June 25, 2009 04:59PM

Yep, I am starting on a Pietenpol and I want to use Corvair power.

Thanks again to everyone for the input.

Garth

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