Can valve guides and seals be put in a 429 head without removing ?

She's smoking pretty bad. Going to run compression test and if they all hold, may just try seals.

Views: 82

Reply to This

Replies to This Discussion

Jay 

You  are going to have to remove the valve springs and the valve keepers to get to the valve stem to install the seals 

That requires a valve  spring compression tool that can only be used with the heads off —as far as I know 

Some seals ( pc seals ) require  that the heads be cut at a machine shop to fit them ( used them on my race engine with great results ) 

If the compression shows  good results —-I would pull the heads and have a machine shop do what they do to bring them back to life and install new seals 

You may want to upgrade your valve guides to the harder ones—- ( if not done ) to be used with the ethanol fuel most of us need to be using these days 

New valve guides will help by preventing oil that is getting into the cylinders —-down worn valve guides 

You can use compressed air thru the spark plug hole to hold the valves up so they  do not fall into the cylinder but not sure how you will be able to remove the valve springs  to get to the valve stems with the heads on the car 

If you can have the heads done do it   to building reliability and performance  into your engine 

Just my 2 cents — hope that helps some 

Enjoy 

They use replacement  hardened valve seats in the heads as well for ethanol fuels 

Fresh heads on an engine is a very nice thing to have— in your pride and joy 

Enjoy 

Get a spring compressor, a engine compression kit with the air fitting for the spark plug hole and a good solid compressor. 

Use the air fitting in the spark plug hole to hook up an air hose.  Only take one spark plug out at a time so the engine does not rotate.  Have the piston at TDC also as a precaution. The air pressure keeps the valve closed while you do surgery. 

Russ 

Do you have a method to be removing the valve spring with the heads on ? 

I have replaced broken valve springs with the air method but always had the heads off —to pull all the valve springs off  an entire head 

Enjoy 

You can change the valve seals with a regular valve spring tool and filling the cylinder with compressed air to prevent the valve from falling in the cylinder.  Don’t bother trying the flat bar method that they show in the manual, it is not easy.   The valve seals in our cars are not a positive seal, they’re just a little o ring wrapped around the valve stem to prevent oil from dripping down.  

RSS

Photos

  • Add Photos
  • View All

Forum

Web site up with a new design.

Started by Russ Austin in General Discussion. Last reply by Russ Austin 18 hours ago. 2 Replies

My web site has been down for a few months and I migrated to GoDaddy.com  Best move ever!My new web site rocks, hope you enjoy it.  …Continue

Had the 64 convert out for some Cruising around the town

Started by Tony and Ginny 429 in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 yesterday. 5 Replies

It is 74 degrees sunny and dry in central Fl - what a day !! - Top Down of coarse The usual OOH’S and AH’S people encircling the car when parked -  a NICE yelling from a car  —and a what year is that…Continue

The 64 - 429 Cadillac gas engine —-is a special unique torque monster ! !

Started by Tony and Ginny 429 in 1963/64 Cadillac Specific Discussion yesterday. 0 Replies

The 64 Cadillac gas engine is a torque monster —with 480 ft lbs of toque at 3000 RPMs Out of curiosity I looked up my 409 dual quad  425 HP  race engines   specs and it has only 425 ft lbs of torque…Continue

Blog Posts

Oil pump

Posted by Ray Schick on October 30, 2022 at 4:34pm 4 Comments

I removed the front cover to change out the timing chain & gears all that went pretty well when I put the cover back on I put in a fresh oil filter ,filled it up figured it would be enough to prime the oil pump when I started the car .Fired up the car and heard lifters rattling, So I shut the car down right away. So I removed the oil filter housing, and poured oil down the neck of the oil pump housing filled it up and filled up the filter put it all together and fired it up and same…

Continue

Available parts

Posted by Thomas Reichenberger on October 13, 2022 at 11:47pm 0 Comments

Caddy members, I’m upgrading my 64 2-door coupe deville.

motor guy lost my block (machine shop went under) so I’m replacing motor & tranny with LS conversion. I have motor parts (other than block) for 429, rebuilt transmission, converter, and too many other motor parts not needed with fully dressed LS going in.

Email me (Tom.reichenberger@ipsper.com) or call me (210-739-4854) if you’re interested…..I live in San Antonio, TX.

thanks, TX…

Continue

Trunk Open and Lock Mechanism is in Closed Position

Posted by Chris Anderson on September 13, 2022 at 7:14pm 7 Comments

While working on my trunk lock on 64 Cadillac, I mistakenly closed the locking mechanism while the trunk was open.  Is there an easy way to manually release the lock back to the open position?

Thanks.

Fuel Pump Failure

Posted by Jon Shields on August 6, 2022 at 6:48am 4 Comments

Hello,

I'm located in Melbourne, Australia and my 64 sedan de ville is stuck in the garage due to failed mechanical fuel pump. The first after market mechanical fuel pump lasted a few years before it failed & left me stranded 5 hours from home. A hire car and tow got us home. On inspection, I noticed a valve not seated within the housing. I was optimistic, pressed it into place and assumed the pump was good to go. But alas, no. From what I can now determine, the diaphragm pushrod…

Continue

Videos

  • Add Videos
  • View All

© 2022   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service