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Changing engine turbo couplers

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eagleguy

Member
Joined
Apr 5, 2015
Messages
563
I am looking to change all five OEM couplers on my T Type to gray silicone ones. I know most of the tube couplers are just for air but in regards to the intercooler which has one single coupler is there fluid present I should be concerned about? If I am wording this wrong I apologize ahead of time. If there is any easy way to do the swap please let me know.
 
Nope, just air going in those couplers. I took the mounting bolts out of the intercooler so I could move it more easily, but I'm sure everyone does it a little different.
 
Nope, just air going in those couplers. I took the mounting bolts out of the intercooler so I could move it more easily, but I'm sure everyone does it a little different.
Yup that looks like it will be the hardest one.
Thanks for the info!
 
In looking at many members under hood photos I noticed that when the couplers have been replaced they seem to "bulge" in the middle between the two connecting points. Is this common and / or is there a way to avoid it. My stock ones have no such bulge and the replacement are the silicone ones in red.
 
What I think you are seeing is that the silicone hoses fit tighter than the stock ones, so it stretches a little at the ends of whatever is being connected. Then when you clamp down around it the hose it amplifies the effect even more.
 
I replaced all of my stock 'couplers - connectors' with silicone replacements as well as replacing the stock 'screw' clamps with t-bolt clamps. As mentioned the 'couplers' with the bulge in the middle allows flex under load which is a good thing, they do not impede flow. A fixed, mounted part such as the IC has no movement, unless soft bushings are used, but the torque of the engine has flex/movement.

Remember that when GN's were still being made it was about two decades before bushings and connectors became a relative thought and concept.

Just my $0.02
 
1000% agree ^^^ I've blown the intercooler pipe off when using hose clamps so I'd strongly suggest using t-bolts since you're going to be changing out the couplers anyways.
 
Like you I blew off a few connecting hoses under boost a few times until I upgraded the hoses and clamps, the learning curve is short and steep, thin ice some say. I am more about function than I am about originality although the market now offers correct color combination if one wants the OE look.

Same goal we share regarding this platform. I often have to remind my father that we now live in the 21st century and not the 20th century, no progress made just noise pollution.
 
Couplers came with the bolt type SS clamps. Is there a torque spec for tightening?
I've never torqued any of my t-bolt clamps to a certain spec, I just snugged them down. But if you wanted to torque to a certain spec you can look up the company that made the clamps and add torque spec to your search query and you might find what you're looking for
 
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