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Fabbing my crossover pipe and adding a double slip joint but realized I don't know what position it should be in when it's cold. Does the crossover try to compress as the headers get hot or does it get longer? Do i just weld it in at the mid-point of it's travel range and hope for the best? LOL
I have no slip joint in mine. V band on one side, factory ball socket joint on the other. Two flex joints broke in short order. I eliminated flex joints and never looked back. I've had no problems since and i've removed the whole thing and put it back on with no issues. I took it off last weekend to wrap it and it wenr back one no issues. I dont think id use a slip joint because I wouldnt want to have a leak and lose boost potential.
Fabbing my crossover pipe and adding a double slip joint but realized I don't know what position it should be in when it's cold. Does the crossover try to compress as the headers get hot or does it get longer? Do i just weld it in at the mid-point of it's travel range and hope for the best? LOL
That would be quite a trick for it to expand (going off of the title of thread) as it compresses.
I get what you're saying but I wasn't sure if they got closer together that far down from the heads as the upper end got hot or if the whole header moved out (and possibly rearward) together. It was worth asking imho, so I did.
I have no slip joint in mine. V band on one side, factory ball socket joint on the other. Two flex joints broke in short order. I eliminated flex joints and never looked back. I've had no problems since and i've removed the whole thing and put it back on with no issues. I took it off last weekend to wrap it and it wenr back one no issues. I dont think id use a slip joint because I wouldnt want to have a leak and lose boost potential.
Lol, leak
Last edited by rotary1307cc; Oct 9, 2019 at 08:37 AM.
People don't have a clue how much stuff is moving with heat. It is far more than they realize
And with the bends stuff is moving in compound angles not just down one plane.
They worst thing you can do is solid mount the turbo without any float, why do you think it kills the flex joint? That is weakest section of the run, it isolates the majority of the movement to that
The double slip is by far the superior joint for something like this when you cant put a Bellow/flex in the correct position like an OEM can
The double slip is simple and the strongest part of the whole hotside, it is 3 overlapping walls of the parent tube
Sure run the hotside without any flex and think it's super.... There is so much stress along the run through the heat cycles you will see how well that stands up long term
Take a 3ft long chunk of 304 stainless tube........ Increase the temperature 1000*f. ...... The pipe has grown in length over a half inch
People don't have a clue how much stuff is moving with heat. It is far more than they realize
And with the bends stuff is moving in compound angles not just down one plane.
They worst thing you can do is solid mount the turbo without any float, why do you think it kills the flex joint? That is weakest section of the run, it isolates the majority of the movement to that
The double slip is by far the superior joint for something like this when you cant put a Bellow/flex in the correct position like an OEM can
The double slip is simple and the strongest part of the whole hotside, it is 3 overlapping walls of the parent tube
Sure run the hotside without any flex and think it's super.... There is so much stress along the run through the heat cycles you will see how well that stands up long term
Take a 3ft long chunk of 304 stainless tube........ Increase the temperature 1000*f. ...... The pipe has grown in length over a half inch
I think some people over think things. I did when I put a flex joint in. Listening to the internets. Then I found out for myself that **** don’t hold up. That **** didn’t last a month. Now with the solid crossover it’s been on there over a year. And I drive this car a lot. I took the crossover off last weekend and wrapped it. No cracks no stress. Nothing.
ive removed my hot side And inspected it. I used 1/8 sch40 stainless. Looked perfect. I think people have cracking problems when they place components in the wrong places and makes it have more stress that it normally would. Maybe in the future I’ll have a problem, if I do, I have a welding machine. I said that when I built it. And the only problems I had were the flex breaking and a v band clamp breaking. The V band breaking was my own lazy/rushing fault. I positioned the joint too close to the block and the v band wouldn’t seat on the flange correctly. I moved it and now it’s good.
I had a cheap ebay flex. I removed the inner liner and ran it that way for 3 years. I admit i didnt have huge back pressure because i used a correctly sized turbine but i never had a failure and the turbo was frame mount and the engine still had rubber mounts. I dont know why yours would fail so quickly.
I had a cheap ebay flex. I removed the inner liner and ran it that way for 3 years. I admit i didnt have huge back pressure because i used a correctly sized turbine but i never had a failure and the turbo was frame mount and the engine still had rubber mounts. I dont know why yours would fail so quickly.
Heat.
I had a good one too. I bought it from ace race parts.
Double slip is the best type of joint. I have a vibrant bellow on my hotside and it's been great for 4-5 years. Just have to utilize them correctly.
i think thats where the holley crossover is fucked up. the bellows needs to be on the longest section of tube, as it'll move the most with thermal expansion. putting it where they do side-loads and it eventually fails.
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Which direction does a crossover pipe expand? 
