Tips for Removing Coolant Cross Over?
#1
Tips for Removing Coolant Cross Over?
Trying to finish up the winter projects and another problem popped up. There is coolant around the base of the coolant bridge where it goes into the block, guess it didn't like sitting around without coolant for a while when I was changing the water pump and the o-ring dried up.
So, any tips? Does the oil filler neck have to come off, not much room between the bridge and the oil fill neck.
Thanks
So, any tips? Does the oil filler neck have to come off, not much room between the bridge and the oil fill neck.
Thanks
#7
Check the hoses first.
I thought mine was leaking there also but upon further review one of the smaller hoses right above it was leaking and the coolant was puddling in the bridge to block conection area. You have to take the hoses off anyway so check them out because it may save a lot of hassle.
I thought mine was leaking there also but upon further review one of the smaller hoses right above it was leaking and the coolant was puddling in the bridge to block conection area. You have to take the hoses off anyway so check them out because it may save a lot of hassle.
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#8
Just pulled one out of a '90 GT and reinstalled it a few minutes ago.
Easy to do. Wish I had take a couple of pictures. There are two (red) seals that go on each side of the bridge. Replace and add a bit of sealant. The one in the middle is large and requires a bit of pressure to get it in to slide in the block housing. If you are that far in, make sure you pull the thermostat and change the TWO that are there, the larger o-ring that holds the t-stat in place and the rusted one at the rear.
Here is a pic of the rear one, this one is a steel seal surrounded by rubber and is a known failure point. Replace them all and you will be good. I only use sealant on the two on the head bridge points.
Easy to do. Wish I had take a couple of pictures. There are two (red) seals that go on each side of the bridge. Replace and add a bit of sealant. The one in the middle is large and requires a bit of pressure to get it in to slide in the block housing. If you are that far in, make sure you pull the thermostat and change the TWO that are there, the larger o-ring that holds the t-stat in place and the rusted one at the rear.
Here is a pic of the rear one, this one is a steel seal surrounded by rubber and is a known failure point. Replace them all and you will be good. I only use sealant on the two on the head bridge points.
#9
Roger, good point, will double check the hoses first.
Sean, thanks for the picture. I was planning in replacing the thermostat and the seal behind it while I was in there. From the look of the O ring and depth, I may be able to sneak out the bridge without removing the fill neck, I'll give it a try first, of course that is if the hoses aren't causing the leak
Sean, thanks for the picture. I was planning in replacing the thermostat and the seal behind it while I was in there. From the look of the O ring and depth, I may be able to sneak out the bridge without removing the fill neck, I'll give it a try first, of course that is if the hoses aren't causing the leak
#11
Also, be VERY careful with the four bolts if you haven't had the bridge off yet. Since there's leakage there, you may have corrosion. The allen head bolts are prone to stripping out.
I replaced mine with hex-heads, and some anti-seize. Also chase out the threads before reinstalling.
I replaced mine with hex-heads, and some anti-seize. Also chase out the threads before reinstalling.
#12
Glen.........a pic of the coolant bridge and its components. There are 5 seals to replace; 2 tstat that Sean pointed out, the main O ring between the bridge and block and the 2 smaller red coloured seals for the cyl. heads.
#14
I fixed a coolant leak into the well under the bridge by fitting new o-ring and new red gaskets (silicone sealant on the red ones).
All was good but sometime later I started getting a leak which would show up as small trail under car (my trays are off just now) after it had stood overnight after a run. Source was in vicinity of front of engine so I suspected water pump at first.
Turned out it was the hoses. When they get older they can reach point where you have to tighten them more when they are hot.
So check the hoses but if you are getting coolant into the wells under the bridge much more likely to be those gaskets/o-ring.
All was good but sometime later I started getting a leak which would show up as small trail under car (my trays are off just now) after it had stood overnight after a run. Source was in vicinity of front of engine so I suspected water pump at first.
Turned out it was the hoses. When they get older they can reach point where you have to tighten them more when they are hot.
So check the hoses but if you are getting coolant into the wells under the bridge much more likely to be those gaskets/o-ring.