Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Current Page: 2 of 3
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 05, 2018 06:49PM

Right, I thought about that AFTER I took them out smiling bouncing smiley

I blasted the stuck one with some penetrating fluid; hopefully next weekend It'll be a little more cooperative.

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: JimBrandberg ()
Date: August 08, 2018 08:17AM

Sometimes I heat the head adjacent to the stud with a propane torch to help it come out. If you keep pressure on the wrench with one hand while heating with the other it will all of a sudden start to turn.
I heated both heads up on an engine yesterday to get the short studs to go in. One was 1 5/8 and the other was 1 3/4. I like 1 7/16 protruding on the short stud and 4" on the long one. Too much stud sticking out maybe means not enough thread engagement in the aluminum.
I pull the long studs all the time but usually leave the short ones if they're correct. Too much potential for disaster with those threads that are "down in the valley".
You also need to be careful about too much torch heat. The entire head will get hot, not just where you're working. Aluminum is amazing that way.

I like your method of keeping at it here and there when you can. Pretty soon you will be done and a big chunk of time can be difficult to find.

Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 08, 2018 09:28AM

Thanks Jim!

When heating the head: did you do it from underneath, or on top?

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: JimBrandberg ()
Date: August 08, 2018 09:57AM

To the side of where the stud is. On the long stud on the outside of the projection where it lives. On the short stud on the flat surface parallel to the stud towards the center of the engine, maybe a little down in the carburetor port. The idea is to expand the aluminum surrounding the stud without heating the stud itself. Propane is not as hot as oxy/acetylene and thus more gentle. I only use heat when the double nuts want to turn together without the stud turning.

Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 08, 2018 09:58AM

Thank you very much -- that's exactly what's happening on that last one. I'll give that a go this weekend!

If I can't get it, I'll just move on to other disassembly and come back to it when it's the last thing left cool smiley

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 12, 2018 12:32PM

Making good progress. I used a heat gun on the last remaining carb stud, and it came out without too much effort, so that's good. Then I removed the coil and its mounting bracket, all the top bolts for the right-side shroud, the bottom engine shroud, and the exhaust manifold and muffler/tailpipe. I also drained the oil (the chassis manual said to do that).

With everything in plain view, I can now understand some things people I've read about "push rod tubes" smiling smiley

I think that next weekend I should be able to pull the head. Wish me luck!

Exposed!

Proceed in an orderly fashion...

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: MattNall ()
Date: August 12, 2018 12:40PM

You'll get it!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 12, 2018 01:40PM

Thanks Matt! I definitely will. Then we'll see what's happening in there...

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 19, 2018 12:44PM

I got the head removed today! I got started by removing the rockers and push rods. Then, I disconnected the push rod tubes. I didn’t have a fancy tool to pull them, nor my spring pliers, so I just used regular pliers, elbow grease, and leverage against the head. I got them all disconnected without doing too much marring of the tubes, and no damage. Then I removed the head nuts — all relatively easy except for the one furthest toward the rear of the car. That one had me cursing a little bit, as I rounded off the nut! Thankfully, a little WD-40 and some additional patience and effort got it off.

[lh3.googleusercontent.com]

After finding and removing a couple of additional shroud screws that I’d missed before, a little bit of wiggling and muscle got the head off.

There’s definitely something amiss with the intake valve, but my untrained eye can’t tell if it’s the seat or something else.

[lh3.googleusercontent.com]

And the cylinder shows some valve contact. I’m not sure if that’s something to be concerned about?

[lh3.googleusercontent.com]

(Here’s all three cylinders):

[lh3.googleusercontent.com]

Regardless: head work is almost certainly beyond my ability, so I’m going to have to take it somewhere. Paging Steve Goodman and other Colorado locals: any suggestions?

I'm pleased that I've been able to get to this point by myself (with help from the group and the shop manual, of course!). It's great to dig in -- I'm learning a lot by just getting in there and tearing it apart. Words and pictures only go so far.

Thanks everyone,

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: American Mel ()
Date: August 19, 2018 01:28PM

Yep.
Lokks like you dropped a valve seat, and it broke up.
Then proceeded to be pounded into the head, before being blown out the tailpipe.

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: MattNall ()
Date: August 19, 2018 01:37PM

Not bad... head can be fixed easily...

BUT is this a crack???

Attachments:
Options: ReplyQuote
Re: Returning to my Corvair
Date: August 20, 2018 08:13AM

Even if it’s not a crack the rings are pinched on that piston. I’d be replacing that at a minimum.

---------------------------------------------------------------------------------------------
You're unique, just like everyone else...

Johnny B
Central WI

Wife's '68, 3.0L, twin-screw compressor and fuel injected in the works...

Project Pressurized Pancake


Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 20, 2018 03:15PM

Thanks fellas. The car isn't at my house, so when I go up there again this weekend I'll take a closer look at that piston (and maybe even, you know, clean it off a little bit).

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: August 26, 2018 02:58PM

No wrench progress this weekend, but I got something more valuable: a good conversation with Steve Goodman spinning smiley sticking its tongue out

I dropped the head off with Steve, for cleaning and repair. He was able to tell (by looking at the head, like Johnny mentioned) that the piston is certainly in need of replacement. So I'll work on that while Steve and the machine shop(s) work on my head.

So: fun! More wrenching to commence next weekend!

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: Gregory_Miller ()
Date: August 27, 2018 03:24PM

Looks better then the #5 intake valve my 68 ate, decided it liked the taste so much it sucked some into #3 and partied there too. Ruined a really nice running rebuild. sad smiley

Greg Miller
Eugene, Oregon

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: September 03, 2018 02:02PM

Back to it this weekend. I got the top shroud off, and found a little surprise...

What could it be?

Yep, it's a socket wrench!

Funny. It's definitely not one of mine, so it has obviously been there since I bought the car over five years ago.

Next weekend I'll pull the top of the engine and hopefully get the #5 piston and cylinder out, too.

My father-in-law and I had a good chuckle about the factory shop manual. I struggled for several minutes trying to figure out what a "Delcotron" is (as in: "Remove the Delcotron but leave the bracket"). I'd never heard that before, and neither had he. We eventually figured out that it was the 1965 name for an alternator winking smiley

Slow and steady progress. Better than no progress.

(I hope I remember how to put all of this back together in a couple of months...)

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado






Edited 1 time(s). Last edit at 09/03/2018 07:38PM by MattNall.

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: MattNall ()
Date: September 03, 2018 03:18PM

George!!! take pics!!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: geomuck ()
Date: September 03, 2018 06:29PM

Oh, they're in the links in my post. Is that not working?

George Murnock
1967 Corvair Monza convertible 140/4, owned since August 2013
Near Boulder, Colorado



Options: ReplyQuote
Re: Returning to my Corvair
Posted by: steve c goodman ()
Date: September 03, 2018 07:00PM

George I think Matt means to take lots of pics of your disassembly, that way you know where everything was before you took it apart. ggg

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

Options: ReplyQuote
Re: Returning to my Corvair
Posted by: American Mel ()
Date: September 03, 2018 07:31PM

Yes, I think that is what he meant too.
BUT, posting pictures directly, instead of links is a LOT easier on the readers of your posts.
Yes, your links work, but most of the time, if I have to chase down pictures on links, I will just quit following a thread due to the hassle.
Also, if you post your pictures here, they remain.
Many guys post through links, and then the link DIE!
We now have a ton of threads with NO pictures.

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

Options: ReplyQuote
Current Page: 2 of 3


Sorry, only registered users may post in this forum.
This forum powered by Phorum.