455 72-75 Weirdest coolant leak ever

Discussion in 'Street/strip 400/430/455' started by Threeft, Dec 12, 2016.

  1. Threeft

    Threeft Well-Known Member

    You think its possible to be leaking from the part between the waterpump and the block, i think its called the timing cover

    Sent from my SM-G900P using Tapatalk
     
  2. john.schaefer77

    john.schaefer77 Well-Known Member

    If it is behind the distributor on the timing cover I would look at the bypass hose and the upper hose and thermostat housing. Even if the housing is tight the gasket surface can have imperfections such as pitting. The long timing cover bolts that go through the water pump sometimes leak. I use liquid Teflon on those but I don't think those would leak by the distributor unless the fan is blowing it.
    The timing cover gasket would leak oil. The water pump gasket would leak the water. It again would be difficult to appear near the distributor.
    The intake gasket should have sealer around the water ports. The only way to see that would be to remove the intake.
     
  3. Threeft

    Threeft Well-Known Member

    I just replaced the upper hose, bypass hose and and thermostat housing gasket I dont see anything we around there. It only looks wet where the timing cover hits the block

    Sent from my SM-G900P using Tapatalk
     
  4. Threeft

    Threeft Well-Known Member

    Ill try thay teflon idea tomorrow

    Sent from my SM-G900P using Tapatalk
     
  5. CJay

    CJay Supercar owner Staff Member

    The OP said it was coming out of the intake bolt(s). At best, he has a bad intake gasket. At worst, he has an incompatible intake for the heads installed as per the pics he posted. And for all we know, he may have coolant leaking into the engine:Do No:.

    If the OP is going to start driving this car daily, he's going to have to address this ASAP.
     
  6. Threeft

    Threeft Well-Known Member

    Lets hope for the best :D

    Sent from my SM-G900P using Tapatalk
     
  7. CJay

    CJay Supercar owner Staff Member

    Im jaded and cynical. I just expect the worse
     
  8. Threeft

    Threeft Well-Known Member

    Going to try that bolt tomorrow im stuck at home till i fix this luckily my sons on christmas break

    Sent from my SM-G900P using Tapatalk
     
  9. Threeft

    Threeft Well-Known Member

    Tried unscrewing the bolt under the impression that I could pull just the bolt out but it wasnt difficult to tell that wasnt going to work because coolant immediately after a few twists stated pouring out from there. Since im going to be needing this as a daily driver for a while im just going to take apart the whole front down to the timing cover to inspect if its a crack, gasket or just that bolt. Im ordering a gasket kit. Do you suggest I change anything in that area that could add reliability?

    Sent from my SM-G900P using Tapatalk
     
  10. CJay

    CJay Supercar owner Staff Member

    How are you going to address the fact that you have the wrong manifold on the car?:Do No:

    Don't take this the wrong way, but you seem to be pretty green to attempt a partial engine teardown. Keep in mind that the balancer bolt will need to be removed with an impact gun, the distributor will need to be removed and put back in at top dead center on #1. Plus your going to have to mess with he oil pan gasket. Frankly, I don't see a reason to remove it. As much as you think the timing cover is leaking, the antifreeze that sitting in a puddle came from your intake manifold

    What Im getting at is that its not a job for the faint of heart. Its like a first time swimmer trying to swim the English channel. I would highly recommend you find someone that can do the job for you. And maybe teach you as they go.
     
  11. Threeft

    Threeft Well-Known Member

    Luckily I'm not faint of heart ;)

    I do understand that was the best advice you could have possibly given someone in my situation,

    But

    Ive taken apart and put back together 4 engines in my life, down to the block. Mind you, this was about 4 years ago and how I speak may seem green because I forgot a lot, but there is a reason I'm not scared to take these things apart.

    A man with a wrench, shop manual, time and a sharp mind can do almost anything.

    As of now, I have a place where I can store the car for 2-3 weeks to pull this job off. I have pressure tested the coolant system and the intake no longer leaks, its the timing cover, so this is a completely different leak I'm handling.

    As far as the Intake goes, I contacted the previous owner and he used this intake for the last 20,000 miles on the car so im waiting for my tax return to just replace the intake since it will do for now(im not happy about this, but thats my reality).

    A little more about me though, I can hit a sattilite 22,000 miles away to give communications to anywhere in the world. This isnt going to be easy for me, but I will succeed.

    Dont forget, I'm an army man. HOAH! :cool:

    I never quit until my mission is done, and right now my mission is to fix this leak. So about that timing cover, is there anything that you'd suggest I replace while the front end is apart? A list of tools ill need to rent would help as well.

    Man, this forums going to be gold for all the newbies out in the world.



    Sent from my SM-G900P using Tapatalk
     
  12. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    If you are removing the timing cover, replace the water pump and timing gear set. If your oil pressure has been good, I would not mess with the pump (which is part of the timing cover). You will need to reprime the pump before trying to start it up initially. People say to pack it with vaseline, but I've primed them dry. Also, if you are not cracking the pump open, you will probably be fine to try priming without packing anyway.
     
  13. john.schaefer77

    john.schaefer77 Well-Known Member

    Remember to seal the bolts that go through water. I also use gasgachinch from edelbrock to stick the timing cover gasket on the block. For the oil pan gasket, you must trim the front off clean at the block. I don't use the gasket section provided, rather use rtv to make the front section. That's just me. Also, if you change the timing set be sure to use loctite on the bolts. Be easy on the small water pump bolts and don't forget the fuel pump. Good luck.
     
  14. Smokey15

    Smokey15 So old that I use AARP bolts.

    And, I'd add: Do not over use any type sealant on the timing cover especially around the oil pump passage. I've seen an engine lost because of a 'mechanic' using way too much silicone on the cover.
     
  15. CJay

    CJay Supercar owner Staff Member

    Ive always used Permatex high tack on the timing gasket.
     
  16. Smokey15

    Smokey15 So old that I use AARP bolts.

    Me too and as an old TV commercial used to say, "A little dab will do ya!".
     
  17. deluxe68

    deluxe68 Well-Known Member

    Earlier this year I encountered something similar. It was not leaking down, in fact it was squirting upwards
    (from the cover) and hitting the bottom of the head area making it look like the corner of the head was leaking.
    It was hard to notice at first because everything was wet with coolant. Once I took the time to wipe down and dry the entire area, the leak point was easy to find after the next drive and park.
     
  18. Threeft

    Threeft Well-Known Member

    Ill make sure to try retightening everyscrew in that area, ill spend all of monday making sure that I can feel confident that it is the timing cover. Earlier in this discussion after discovering the intake was loose someone said they wonder what else is loose. Thats been lingering in my mind since some of you feel really confident that its not the timing cover gasket I'm sure that comes from experience. Ill go get some dye if that doesnt work and make sure to pressure test one last time with a black light. I'll keep everyone posted.

    Sent from my SM-G900P using Tapatalk
     
  19. Threeft

    Threeft Well-Known Member

    My valve covers are pretty dirty not too far from this build up. It looks dry but with it that dirty I guess I could never know for sure. Ill make sure to hash that out tomorrow as well


    Sent from my SM-G900P using Tapatalk
     
  20. john.schaefer77

    john.schaefer77 Well-Known Member


    My last one I didn't have Gasgachinch and used permeates high tack. I like that also.
     

Share This Page