Head Gasket on 429 - If it were put on upside down, what would happen?

My newly rebuilt engine got hot immediately on first run. Did this 3 out of 3 tries, blew hose off first two times. It fails compression test badly.

My question it this... Can the head gasket go on upside down? If so, what would the result be?

Views: 278

Reply to This

Replies to This Discussion

I ran the car this evening, and it ran very well, at 186 degrees at the T'Stat housing. Temp gauge read normal, about 1/3 of the way up or so. Same as it did in the past. This time I repainted the radiator support and fan shroud, and put them in, along with the fan. That helped. My water pump pulley has a slight wobble right now, so I have to get on that and check that I have it in completely straight. I suspect I don't!

End cause was the air pocket in the cooling system, that I foolishly missed, the first time I ran it. This caused the head gaskets to go. I replaced the head gaskets, and compression in the three low comp corner cylinders increased quite a lot. So did a couple of others. I still have lower compression on three out of the four corner cylinders, but it has just shy of a half hour run time on it now. It runs smoothly and quietly with no load, thus far. It got better after I adjusted the timing and dwell. It really runs nicely. Those three lower comp cylinders are the only spoiler.

So now I continue on with the reassembly of the car.

Let the rings seat by putting a few thousand  miles  on the engine and compression should show improvement 

Keep an eye on the oil level as it will be higher usage than normal now 

The stock rings on our engines take more time to seat than most  due to their metallurgy 

You could be just fine 

Enjoy the new rebuild 

Enjoy

I know that is a big relief! You expect the worse and when it turns out not to be so bad you will enjoy the results that much better. In other words you appreciate a good running engine when you get past a scare like that. Get that water pump in check you should be for smooth cruising in the coming months.

RSS

Photos

  • Add Photos
  • View All

Forum

Current 1963/64 Cadillac Listings on eBay

Started by Jason Edge in For Sale. Last reply by Jason Edge 21 hours ago. 0 Replies

To see all 1963/64 Cadillacs Listed on eBay in the USA…Continue

Tags: ebay

Valve stem seals for 429?

Started by Matti Roth in Restoration Discussion. Last reply by Matti Roth yesterday. 7 Replies

Hello!I am rebuilding 429 for 64 DeVille and got Felpro head gasket kit including valve stem seals. Is it recommended to install those even though they are not originally used? O-rings will be…Continue

429 lower compression ring

Started by Matti Roth in Wanted to Buy. Last reply by Matti Roth on Friday. 3 Replies

I am installing new rings to my 64 429 and being first time there, I managed to break one ring. I wish not to buy the complete set. Are there single std size rings available? Continue

Blog Posts

Can you help? Driveshaft Question....

Posted by Chris on May 30, 2021 at 8:55am 1 Comment

Hello!

Newbie to the group here - we have already found tons of invaluable information on the board, so thanks! We are restoring a 1963 Series 62 Convertible. We are wondering if anyone knows of a source to buy the propellor yoke flange (that bolts to the pinion flange) for the driveshaft? One of our ears partially broke off. Not sure if we can buy just the yoke flange as an aftermarket part, or if it has to be rebuilt by a welder/fab guy? Maybe a salvage yard for a source? Again, any…

Continue

Thank you Kurt re: VIN location

Posted by Robert Pellow on April 19, 2021 at 1:07pm 0 Comments

I just wanted to say a thank you to Kurt for steering me to the tech tips page on V.I.N. locations.  Excellent information.  Thanks a bundle.

Robert Pellow

V.I.N. where?

Posted by Robert Pellow on April 18, 2021 at 1:41pm 6 Comments

Where can I find the V.I.N. on a 63 convertible?  The usual space at the base of the interior windshield on the driver's side has been decimated by weather.

63 Trunk detail

Posted by Bob Pontius on April 8, 2021 at 3:07pm 6 Comments

Jason, I liked the detail and information you have provided. I would like to do mine similar to yours. Can you help? Do you have trunk material? OPGI is sending the trunk product for my 63 Fleetwood. But it does cover the entire trunk as yours was done. If you do not have can you give me a reference? Thanks!! Bob

Videos

  • Add Videos
  • View All

© 2021   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service