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I've got a 383 4 barrel in a 68 monaco almost 200000 miles now. Today I pulled my valve covers off to change the valve cover gaskets that were leaking as I've got some new ones but on the top of my heads in the oil there is some coolant and some white froth and a bunch of rubber chunks. I have some head gaskets I can use to replace the old ones but I'm wondering what the rubber chucks could be. Is it my heads that are done for or what can I do? Need help quick please. Thanks
Last edited by 68monaco383; 10-27-2017 at 06:43 PM.
Reason: Missed some details
Could be valve stem seals could also be someone replaced the valve cover gaskets previously and did not clean the old gasket out...
Could just be cold weather condensation. If it is antifreese it could be the water pump housing leaking into the oil
I've got 3 bags of valve stem seals in the felpro engine kit and the rubber chunks look to be about the same thickness so it's probably them but they wouldn't let coolant through or would they?
Could be valve stem seals could also be someone replaced the valve cover gaskets previously and did not clean the old gasket out...
Could just be cold weather condensation. If it is antifreese it could be the water pump housing leaking into the oil
its not gasket the old ones were cork and I replaced them with cork but now I've got the rubber coated fiber ones. Pretty sure its antifreeze since its green drops. Could be the water pump good chance on that I just don't understand how that would be coolant in oil wouldn't it just leak coolant say if it was cracked? and would the valve stems being gone let coolant up to the top of the heads?
Last edited by 68monaco383; 10-27-2017 at 09:25 PM.
Reason: Missed some details
I've got 3 bags of valve stem seals in the felpro engine kit and the rubber chunks look to be about the same thickness so it's probably them but they wouldn't let coolant through or would they?
AS for the coolant....
My guess would be Head Gasket
Or
Cracked head or engine block
If it has the old steel shimmed head gaskets.... You might be able to get away with just dong the head gaskets as long as the heads and block deck are close to flat.
ok good Thanks so either than being the head gaskets or the water pump housing which I still don't understand is there anything else that would let coolant mix with oil? doubt there's a crack in the heads or anything like that. Thanks
I think What Lynn might have been thinking was the water pump passage in the block might have an issue. Unlikely... But Possible...
Now if it was a small block. Different story..
I think What Lynn might have been thinking was the water pump passage in the block might have an issue. Unlikely... But Possible...
Now if it was a small block. Different story..
makes sense but most likely fine. And yes it would be. I'm thinking my heads could be cracked but I'm not sure how to tell if I can't see an actual crack. I'm working on it now but I can't get the damn intake off its like its stuck on there
Make sure you got all the bolts out and and the valve covers off and give it a pry. Could be glued on.
For the head check... If the crack is not viable, Mag-ne-fluxing is the way to go to check for cracks....
Make sure you got all the bolts out and and the valve covers off and give it a pry. Could be glued on.
For the head check... If the crack is not viable, Mag-ne-fluxing is the way to go to check for cracks....
got it off. I only pulled the head I saw coolant in no visible cracks so will have to be tested ill pull the other off tomorrow and see what's up. Thanks for the video too
[QUOTE=RacerHog;141727]Make sure you got all the bolts out and and the valve covers off and give it a pry. Could be glued on.
For the head check... If the crack is not viable, Mag-ne-fluxing is the way to go to check for cracks....
These parts are 50 years old with much history so I have block and heads Mag ne fluxed every time I pull my stuff down.
Make sure you got all the bolts out and and the valve covers off and give it a pry. Could be glued on.
For the head check... If the crack is not viable, Mag-ne-fluxing is the way to go to check for cracks....
These parts are 50 years old with much history so I have block and heads Mag ne fluxed every time I pull my stuff down.
heads will be resurfaced today then pressure tessted then all the valve seals and the frost plugs but im going to post a picture and I would appreciate your guys opinion
Might not be able to see it in this one but there is a little chip on the edge of the left rear cylinder just on yhe block here i wanna know if thats going to be aproblem You can see it here that little chip on the left Heres a better picture you can see how deep it is
here
Last edited by 68monaco383; 10-31-2017 at 09:30 AM.
Reason: Missed some details
you should have been able to see the problem in the area of the cylinder in the gasket.
the gaskets were a little rough in a few spots but no damage by that chip. Hoping it'll be fine. I'm going to post a picture of something else. I'm not sure of its name but I know it works with the choke. Anyways it likes to stick down should the bar be bent differently?
Here it is
Knock all that carbon off the top of the pistons and blow it all out with your shop air...Hope it's flat and should be good to go back together....
ok well I should get the heads back in the next couple days. Not having to pay for them to be rebuilt so I'm ok with waiting. Hopefully everything will be good when I put it all back together. Thanks for all your help guys definitely appreciated. Hopefully no more problems for a while.
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Well everything is back together but i can not get it started I just turn the key and nothing except the interior lights will go dim. I've got crane cams xr700 electronic ignition and I believe I have everything hooked up right so i am getting pretty confused. Any help would be appreciated thanks
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Well everything is back together but i can not get it started I just turn the key and nothing except the interior lights will go dim. I've got crane cams xr700 electronic ignition and I believe I have everything hooked up right so i am getting pretty confused. Any help would be appreciated thanks
you should have been able to put the wiring diagrams together.
I don't have any wiring diagrams I have an original one for stock but i picked the car up with this electronic ignition and a bunch of other wiring redone.
so I didn't get it started and it started pouring water out of one of the frost plugs in the back of the heads. I only replaced the 1 1/4 inch ones on the side but these are smaller. Just one on the front and one on the back of the heads. Does anybody know the size of these smaller frost plugs? Thanks
according to the crane manual everything is correct. The coil is good and I did try another good one but still nothing. After a bunch of testing too everything should work fine but it doesent. What could be doing this is it the box or the distributor all the wiring should be good. Thanks
Last edited by 68monaco383; 11-09-2017 at 06:31 AM.
Reason: Missed some details
I think your going to have to send the box back to Crane and have them test it, and fix it if it is bad...
can't really send it back I don't have any proof i purchased it. Don't really wanna deal with sending it down to the states then back up here anyways. Looking at getting one of those pertronix igniters. No box and easy wiring sounds pretty good. Anybody have any luck with these? Or what's the best way to go around getting rid of the crane stuff. Thanks
10-27-2017, 06:40 PM
