Hello, and thanks for adding to group!

I am restoring 1964 429 engine which I bought as dismantled. It is said to be smoking in driving and has been stored as parts for a year. It is most probably 65500 miles driven. Car was not driven for10 years.


The only damaged part found so far is the top of exhaust valve of cylinder #5. The top has been worn so much that the rocker has been pressing valve locks as well. Respective rocker is worn as well, much more than others. And exhaust rocker #6 is worn as well, and exhaust #8.
Then questions:
1. What damage could this cause? I can think that valve lift gets a bit smaller than it should, but so what?
2. Is that common for Cadillac 429 exhaust valves to worn from the top, especially cylinders #5 and #6? Maybe there is less oil.

This is my first V8 engine project. I have Shop manual. I plan to replace piston rings, all gaskets, nylon timing gear, some worn exhaust valves and rockers, and valve stem o-rings. Bearings, pistons and shafts are in good condition. 

Big thanks in advance!

Views: 2282

Attachments:

Reply to This

Replies to This Discussion

I replaced rest of the rockers to the version with oil groove inside. Now oil comes smoothly to top of each rocker.

Also did you replace all original pushrod?

I replaced only some of them. Those were corroded.

Where did you purchase the newer style rockers, with oil grooves?

Yes I installed the meter there.

Getting ready for engine break-in and filled radiator with coolant. To my surprise, water started dripping from crossover pipe top bolt on driver side. Bolts are tight, new gaskets. I think there should not be water at all behind that bolt. I tried with different washer combinations but no help.
Looks like I need to remove the crossover pipe and look for cracks or something else wrong there.

https://youtu.be/Pcik97SweR0

If it is leaking from behind the cross-over pipe it might be it has simply not been tightened up against the block tight enough.

If someone had drilled through the bottom back end of the thread cavity you are going to just have to cake a lot of sealant around that back.

So, for the 1st issue, did you clean the bolt threads out well before installing the bolts. I always chase those threads with a tap then blow out with air then thread a bolt in and out to make sure it will go in as it should.  If not, the bolt may be stopping before pulling the pipe up against the block as it should.

I have also seen the back end of the bolt hole cavity drilled out or a bolt too long installed leading to the water jacket. If you look at the picture below from above left looking down you can see that cavity that should keep the bolt out of the water jacket end.  If yours is busted out you want to thread heavy sealant on that bolt. 

You will also note this block was compromised at the upper thread hold where it was apparently drilled off center at some point causing a hairline crack. 

 

Reason for the leak was easy to see after removing the crossover pipe: the gasket was not properly in its place and let water flow from water channel to bolt channel. Bolts were tight so there was no leak from outer edge of the gasket. Maybe I should use a bit of sealant or something to keep the gasket in place during assembly. Luckily I have new gaskets in shelf so I can fix it tomorrow.

Gasket got damaged during disassembly but the fault is visible there.


Thanks for good advice!

It is leaking behind the bolt head, not between the pipe and the head. You can see it in attached video. There could a crack between the water channel and the bolt channel. I will check this after I have removed the pipe.

https://youtu.be/Pcik97SweR0

Finally I got everything ready for the first start and 30 min break-in went well. Battery was showing 12,8v but I needed extra power from another vehicle. Only problem was that generator was charging with 15,7v which is way too much. Probably that overvoltage caused damage to condenser in distributor, which had to be replaced twice. Actually we had to stop because we ran out of condensers, and no more old Cadillacs nearby where a condenser could be taken from.

I am very happy with this result and big thanks for all great advice here!


https://youtu.be/vyuqUGuVSCs

Thanks Tony

There is still work to do in fixing rust spot, getting Confort control to work, fixing brakes, assembling the bumper and grille, fixing leak in steering gear etc. I believe these tasks will take at least 2 years as I have several other classic cars to fix. So lots of fun ahead!

RSS

Photos

  • Add Photos
  • View All

Forum

Modern radio antenna …

Started by Mack in 1963/64 Cadillac Specific Discussion yesterday. 0 Replies

Just replaced radios for the modern radios with Bluetooth and all the dance things and wanted to share how I went around the antenna knob… I’ve installed a regular two way GM window switch in the…Continue

BOOT

Started by John Inglesby in 1963/64 Cadillac Specific Discussion. Last reply by Marty Smith yesterday. 1 Reply

I recently purchased a new boot for my 64 convertible and was wondering how difficult it s to install. I'm not very mechanical. It looks like the chrome piece behind and at top of seats needs to be…Continue

63 Exhaust Hanger Mystery

Started by Mike Travers in 1963/64 Cadillac Specific Discussion. Last reply by Cees de Bunje on Monday. 8 Replies

I'm in the process of installing a stainless steel single exhaust from Classic Exhaust on my '63 Coupe de Ville. I'm running into a mystery regarding my middle exhaust bracket. I have the bracket…Continue

TH400 Dipstick Tube Seal

Started by Logan Robb in 1963/64 Cadillac Specific Discussion. Last reply by Logan Robb on Monday. 9 Replies

In my “rebuild” of the transmission, I ordered a dipstick tube seal. However, I’m not sure if the right one came or how to best install the seal. I am wondering if anyone has replaced this seal OR…Continue

Blog Posts

Loud air moving sound within carb with cleaner removed

Posted by Dave Fehrle on March 23, 2024 at 3:23pm 8 Comments

While checking my Carter carb with engine running, I took the air cleaner off and there was a very loud hissing sound of air. I placed a piece of paper over the carb and it didn’t move up or down, is this normal?

Vintage Air AC

Posted by Chase on March 21, 2024 at 5:55am 0 Comments

Hey everyone, has anybody done a Vintage Air AC/Heat setup in their car? I want to bypass the old vacuum setup and go with a Vintage Air Gen 2 model. Before I get started, does anyone have any experience with this? (Which model to go with, do’s and dont’s, etc.) It looks pretty involved. Any and all info/pics would be greatly appreciated. Thanks!

accumulator dryer

Posted by CHRIS CARLSON on December 6, 2023 at 10:54am 0 Comments

Who rebuilds original AC  accumulator dryers for 1964 Cadillac? I have been on Classic auto air in Tampa FL wait list for over a year ,  There is one on Old air products web site that looks very similar to the original # 21-4214A but states it fits 1962 Gm cars, The one recommended for a 1964 Cadillac is half the length 21-4215A    What  is everyone using ? I would prefer to be as original as possible. Thanks

'63 Eldorado trumpet horn + 2 standard horns restoration

Posted by Les Eastling on November 15, 2023 at 10:34am 1 Comment

My son, unbeknownst to me, had all three of the horns on our 1963 Eldorado completely restored. We had recently added the Eldorado trumpet horn to the two standard horns and the sound was not very good... we had heard good ones so we knew something was not right... but there was not much we could do to get better sound from the 3 horns. 

There is a restoration service called The Horn Works who my son…

Continue

Videos

  • Add Videos
  • View All

© 2024   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service