Michael Chomout
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Compression test

Started this discussion. Last reply by Tony and Ginny 429 Jul 14. 7 Replies

Dear Gents, just had time to dova compression test on the 429 engine by warming up the engine and removed all plugs and went through cranking without pouring oil into the cylinder since I want to…Continue

Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?

Started this discussion. Last reply by Michael Chomout May 19. 26 Replies

I have several problems with the 1964 Series 62 including poor engine performance at accelerating and shift problems. It only shifts up at around 25 - 30 mph and stays in that gear at D4. I never…Continue

 

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Tony and Ginny 429 replied to Michael Chomout's discussion Compression test
"Micheal A good machine shop will help you sort out what you should do and replace on the heads  Your country is know for outstanding mechanical engineers in many fields and  Be especially careful to —-Not put the rocker arms on…"
Jul 14
Michael Chomout replied to Michael Chomout's discussion Compression test
"Thank you both for your helpful advise. Today I had time to do the low cylinders with a bit of oil. The pressure just increased by 15-20 psi so not much at all. It has to be a valve issue. What is notorious on the 64? Stuck Springs or worn Out…"
Jul 14
Tony and Ginny 429 replied to Michael Chomout's discussion Compression test
"I know that one of the front bumper bolts will thread into the harmonic balancer bolt hole ( where the caulk plug came originally stock ) —but not sure which one it would be —if that is the way you desire to be turning the engine…"
Jul 7
Tony and Ginny 429 replied to Michael Chomout's discussion Compression test
"A rust buster type  penetrating oil ( PB Blaster-is  best  ) would  be good in the cylinders to help loosen the gummed up rings of an engine not run much in last 20 years ? Easy to spray into the cylinders  Very good chance…"
Jul 7
Tosh Dickenson replied to Michael Chomout's discussion Compression test
"Doesn't matter what oil, whatever you are running in the car would be fine. Next step would be to perform a leak down test.  You can usually rent a leak down tester from an auto parts store. Important that you get each cylinder at top dead…"
Jul 7
Michael Chomout replied to Michael Chomout's discussion Compression test
"Thank you for that helpful advise. I will try this week to do a compression test with oil. Do you have recommendations which oil to use? Hopefully it will be a valve issue since I don't like to pull the engine. The car was not driven often in…"
Jul 7
Tosh Dickenson replied to Michael Chomout's discussion Compression test
"Put a squirt of oil (about a teaspoon) in the low cylinders and rerun the test.  If the compression boosts then the rings or cylinder walls have leakage.  If no boosts then likely a valvetrain issue and you can move to the next tests."
Jul 6
Michael Chomout posted a discussion

Compression test

Dear Gents, just had time to dova compression test on the 429 engine by warming up the engine and removed all plugs and went through cranking without pouring oil into the cylinder since I want to determine if the carb is set incorrect or if the engine is getting tired and got horrible results: driver side psi starting from front 135, 95, 130, 190, passenger side beginning from front 180, 190, 200, 140.what should be the next steps to determine if its just stuck valves or major piston/cylinder…See More
Jun 30
Michael Chomout replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Hi. Do you know where is the pressure gage access point located on the hydra matic ?  What thread size it has? I will start to check the pressure since it is stated so in the shop manual to determine if it might be a stuck valve, the clutch or…"
May 19
Russ Austin replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Tony, I mentioned adding the electric choke from the edelbrock carb to the stock carb. No need to block off any exh ports. "
May 14
Tony and Ginny 429 replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Russ  I am talking about sealing the choke tube  that’s in the intake —on both sides as was necessary to do when my Edelbrock was installed due to the new electric choke  Is that the same thing you are saying ? You use the…"
May 13
Russ Austin replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Tony, you do not need to block off the exh ports in the intake if you want to run an electric choke. The heat tube is sealed from the exh gas. The heat tube only heats up the air being drawn into the choke by vacuum.    If the heat tube is…"
May 13
Tony and Ginny 429 replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Your best bet might be to get the stock parts you are missing ( from Russ ) and install them to prevent the exhaust gasses from coming up the intake tube and then install a manual choke on to your carbs butterfly to control the butterfly as you…"
May 13
Tony and Ginny 429 replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"To use the electric choke  design from Edelbrock on the Carter carb —only  ( good Idea and improvement over stock ) you will have to remove the intake manifold and block the old heat tube in the intake on both ends   OR you will…"
May 13
Tony and Ginny 429 replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"Above should read choke assembly "
May 13
Russ Austin replied to Michael Chomout's discussion Hi Gents. Has anybody experience with the old Hydramatic Transmission (Jetaway with the P-N-D4-D3-Lo-R Shift pattern) ?
"You have a Rochester carb. I will look after work to see if I have a spare chose assembly. "
May 13

Profile Information

Do you own any 1963 & 1964 Cadillacs? If Yes, Year & Body Style
1964 Series 62 Coupe
Cadillac LaSalle Club Member? If Yes, Membership #?
No
1963/64 Cadillac Chapter Member?
No

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At 8:48am on May 11, 2020, Jason Edge said…

Welcome to the 63/64 Cadillac Website.

This site is hosted by the CLC (Cadillac LaSalle Club) 1963/64 Cadillac Chapter. Joining the website is free to everyone, however, you must be a CLC member to join the Chapter. 

- Click on www.join.6364cadillac.com for more information on joining the 1963/64 Cadillac Chapter and the Cadillac LaSalle Club.

Be sure and check out all the links and pages and make yourself at home. The Help Page at www.help.6364cadillac.com will have links to many useful articles and information about our Cadillacs.

 
 
 

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