[easy-stangkin]

My coolant lines to my EGR spacer are wearing out. They are cracked and look like they might have a slight leak. Should I try and replace them or just cap them off? I have searched this and can’t find a definitive answer. Thanks in advance.

[50Droptop]

I have eliminated those coolant lines on several of my mustangs with no issues. I recently swapped over to a explorer intake on my coupe. It is the non egr style. So while I had the coolant pipe off I welded the holes closed.

[easy-stangkin]

ok, thanks for the info 50droptop. what do you think about the claims online about the coolant lines being there to help cool the hot exhaust gases the EGR lets into the intake?

[50Droptop]

That is the reason they were put there. On most of the foxbodys I have had the egr spacer was plugged up with carbon anyhow so IMHO the hot coolant was adding more heat LOL

[nolife]

If you have a working EGR, leave the coolant lines, if your EGR is bypassed/disabled, you don't need the coolant lines.

[banzaibullitt]

Originally Posted by nolife If you have a working EGR, leave the coolant lines, if your EGR is bypassed/disabled, you don't need the coolant lines.

+1

[easy-stangkin]

Nolife and Banzaibullitt what exactly are the coolant lines doing? Are they warming the intake during freezing temperatures or cooling the intake when the EGR releases hot gasses or both? My EGR is intact and seems to be working even with out the coolant lines connected. Capped them due to the leaking. Do you guys know where the coolant passes? Does it just circulate at the mouth of the intake near the TB or does it circulate all the way down close to the heads? I am leaning towards just capping them off even with the EGR as the 93 cobra intake does not use any cooling lines on its EGR system. What are your thoughts?

[ryanw]

I have mine disconected....i dont really see a point since my old cobra intake had a built in EGR spacer, but no coolant lines.....I have searched a search and no one seems to be able to explain why the cobra intake has no coolant line, so if the cobra doesnt have them ,why do we really need them on any of them.

Not to mention thats one more gasket that can fail and send coolant down your intake

[easy-stangkin]

Thanks for the feedback ryanw. I did end up just capping them off and will leave them for now. I have searched all over the web on this over the last few days and agree with you that if the cobra intake doesn’t have them on the EGR, why would we need them on ours. I have also found where guys have heat tested with the lines connected and rested with them disconnected. The temps where very close, but the test with the disconnected lines was actually cooler by a few degrees. Who know, I may end up connecting them back up some day, but for now I guess this debate continues on....

[nolife]

The Cobra intake has the EGR built in and does not require the EGR spacer, I'm sure it gets hot but there is no provisions for cooling it and it was probably a compromise and easier to just not cool it, maybe the intake itself since there is no gaskets involved to impede heat transfer has enough mass carry the heat away and to keep the local temperatures down.
The cooling lines on the regular intake are there to cool the EGR spacer. It is by no means heating anything up and has nothing to do with any type of freeze protection or heating incoming air on a cold day, the exhaust gases present in the EGR heat up a lot faster (just about instantly when you start the car) than the coolant does so that does not make sense. The system can probably run forever without the coolant lines with no ill effects but two rubber hoses are less than a $5 and you gain nothing by not having them.

If someone saw lower temperatures with the cooling lines removed, their EGR was not working.

[easy-stangkin]

Thanks for the feedback nolife. I might end up putting new lines on; however, I can't even see where the rear line connects to the coolant hard line. Do you have any tips on how to get to that? I don't want force stuff around back there trying to get to it as all of the vac lines and what not are just so damn brittle and don’t want to break any…

[1988 convertible]

Originally Posted by easy-stangkin Thanks for the feedback nolife. I might end up putting new lines on; however, I can't even see where the rear line connects to the coolant hard line. Do you have any tips on how to get to that? I don't want force stuff around back there trying to get to it as all of the vac lines and what not are just so damn brittle and don’t want to break any…

connects to the rear of the lower manifold... you have to sort of barge past some of the vac lines and throttle cable carefully to get to it then yank it off... i replaced mine with a piece of rubber fuel pipe...

[easy-stangkin]

Ok, got it and thanks for the info 1988 convertible