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Re: RAV was right, Compression, call me stupid & ?s
Posted by: MattNall ()
Date: February 21, 2009 04:58PM

1 Lap those valve s in #3

2 put some modeling clay in each cylinder's gasket area...

Slide head on slowly and evenly and Hand press it until it seats well

remove and measure the thiskness of the clays.... all should be close...

Then you will know if the 2nd gasket in #3 was just a mistake.

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Re: RAV was right, Compression, call me stupid & ?s
Posted by: Mark M ()
Date: March 01, 2009 06:48PM

Update:

Thanks to Bill and John, two club members - and advice from here - I got the head flycut this weekend. Bill loaned me the tool and John showed me how to cut and measure the head. Looks great. Also got the valves lapped and a start on deflashing.

I'll clean up the head, and the piston tops. Will order gaskets and other parts tomorrow and will post an update when I check compression again.

Mark M
Project: 64 Spyder Vert running 80 hp heads and carbs
1st Vair: 65 Corsa 140
St. Louis, MO
Show Me Corvair Club &
CORSA member

"If it's not broken, you're not driving it hard enough"

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Re: RAV was right, Compression, call me stupid & ?s
Posted by: Mark M ()
Date: March 15, 2009 06:05AM

Good News Update

Got the right side head back on last weekend and valve train parts in yesterday. Cylinder walls all look good, cleaned the tops of the pistons. Carbs are off, so I could not warm the engine up before testing compression but I did have all the plugs out and spun the oil up.

Right side compression are all almost equal and in the range of 130 - 134. And, no chirp coming from any of the cylinders any longer. I checked the left side again just for grins and that side actually came up some on each cylinder - about 5 points to the 130 - 135 range. Is that normal, or just because the engine was cold? Maybe an erratic gauge.

Thanks to Bill, John, and the members of Show Me Corvair Club - and all of you for your advice.

On to the generator and carb rebuilds.

Mark M
Project: 64 Spyder Vert running 80 hp heads and carbs
1st Vair: 65 Corsa 140
St. Louis, MO
Show Me Corvair Club &
CORSA member

"If it's not broken, you're not driving it hard enough"

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Re: RAV was right, Compression, call me stupid & ?s
Posted by: MattNall ()
Date: March 15, 2009 06:38AM

Normal!... Drive on!

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Re: RAV was right, Compression, call me stupid & ?s
Posted by: illinicorsa ()
Date: November 25, 2017 06:31AM

I understand that the head can be removed with engine in the car. Do BOTH the long AND SHORT carb studs have to be removed to do so (on my 140 hp)?

Steve
Ofallon, MO 66 Corsa

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Re: RAV was right, Compression, call me stupid & ?s
Posted by: MattNall ()
Date: November 25, 2017 07:54AM

Long studs





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Re: RAV was right, Compression, call me stupid & ?s
Posted by: illinicorsa ()
Date: November 25, 2017 08:45AM

OK, thanks.

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Re: UPDATE & photos- RAV was right, Compression, call me stupid & ?s
Posted by: TroyWidtfeldt ()
Date: November 27, 2017 06:20AM

Back about your question on the lifters, looks like totally different types of lifters, in mine i had to replace all the lifters and they all had the clip on them. The other ones may have gone "flat" or "bad" and the PO may have just replaced the bad ones. Might want to replace all of them while you are in there just so you have even wear on all of the lifters. OR you will most likely have some of the old ones go bad as well and cause problems later on.

I dont have tons of experience on this but i did an engine rebuild too. Might as well want to take that "insurance" so to speak, out on the engine, if you just keep replaceing things as they come up you will be nickel and dimed to death, you might as well bite the bullet and get it done properly all at once.

Good luck on your build. Love that kind of stuff.smileys with beer When it starts it makes it all worth it, TOTALLY. Dont let anybody tell you different. winking smiley

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