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Solid mounted engine/turbo, what to use for heat expansion?

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Old May 12, 2015 | 02:31 AM
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Default Solid mounted engine/turbo, what to use for heat expansion?

Hello all, about start my hotside and need to make a decision. I would like to put something on each 2.5" crossover between the manifold and the turbo for heat expansion to prevent premature stress cracks. Spd bellow 186 each, reibon ss bellow 110 each, burns double slip 37 each, vibrant interlocking flex 30 each.

The bellows seem a little pricey and I've read hit and miss on the vibrants, leaning towards the double slip, any advice or experience?

Thanks, Derek!
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Old May 12, 2015 | 09:08 AM
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http://www.treadstoneperformance.com...oupler+Bellow/

I've been using these for a few yrs now and no issues! They have a liner inside.

Do not use the standard flex couplers with interwoven steel that do not have a liner. Seen them fail and blow up inside to completely choke off flow. Weave comes undone and it expands shut
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Old May 12, 2015 | 10:42 AM
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There's members on here that claim those have failed on them.
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Old May 12, 2015 | 11:19 AM
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Everyone knows someone whos uncles cousin ran X part and failed. All you ever hear on forums is this failed one time and now all of them are bad lmao

Like said i been using these for about 3 yrs now. Just keep an eye on things like any other component
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Old May 12, 2015 | 11:30 AM
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Originally Posted by Orr89rocz
http://www.treadstoneperformance.com...oupler+Bellow/

I've been using these for a few yrs now and no issues! They have a liner inside.

Do not use the standard flex couplers with interwoven steel that do not have a liner. Seen them fail and blow up inside to completely choke off flow. Weave comes undone and it expands shut
I'v also heard members claim failure, but never seen it. They always have an excuse for not having a picture of it. Mine held up for 3+ years at 60+psi of exhaust back pressure.

I used the SS bellows on my last kit. Summit sells them semi-cheap ($30) but only in 2" ID. ( which is plenty for most)

http://www.summitracing.com/parts/vpe-67632
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Old May 12, 2015 | 02:29 PM
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I use both the weave type (with the segmented liner inside), along with the bellows style for the wastegate lines.


Last edited by PPI Typhoon; May 12, 2015 at 02:39 PM.
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Old May 12, 2015 | 06:02 PM
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If your motor and turbo is solid mounted like mine is. I just used a vbanded hotside. Should be enough to move a tiny but if anything wanted to move.
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Old May 13, 2015 | 04:46 PM
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Originally Posted by topgun542
If your motor and turbo is solid mounted like mine is. I just used a vbanded hotside. Should be enough to move a tiny but if anything wanted to move.
No flex pipe?
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Old May 13, 2015 | 05:24 PM
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negative... no problems so far. I figure the vbands and the manifold flanges will move enough to no cause problems.
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Old May 13, 2015 | 10:49 PM
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Thanks guys
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Old May 14, 2015 | 07:11 AM
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Solid mounted to the frame and solid motor mounts. No issues.

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Old May 14, 2015 | 08:47 AM
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Just mount your Turbo(s) to the engine..
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Old May 14, 2015 | 09:10 AM
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That solid stuff might work for some time and low usage, but over time it will crack.
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Old May 14, 2015 | 02:16 PM
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Originally Posted by PPI Typhoon
I use both the weave type (with the segmented liner inside), along with the bellows style for the wastegate lines.

That's the coolest looking turbo setup ever...lol
Do you have a build thread on the car?
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Old May 14, 2015 | 04:52 PM
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Originally Posted by mkvamso
That's the coolest looking turbo setup ever...lol
Do you have a build thread on the car?
Thanks, it's been a long process to get it there. I don't have a build thread on here. I've made a few posts on the Factory Five forums, but not on LS1Tech. I really had no plan on the build. It had a stock LS1 (333whp) and Porsche G50 transaxle. While driving it to work, the alternator went bad. Well, to replace the alternator, I had to remove the gas tanks.

So if the gas tanks are out, I might as well replace them with sheetmetal tanks.
Since I'm getting new tanks, I need a new fuel system.
Since I'm getting a fuel system, I might as well get the turbos.
Since I'm doing the turbos, I might as well get a fully forged LSX
Since I'm going fully forged, twin turbo, I might as well upgrade the transaxle
Since I'm upgrading the transaxle, might as well upgrade to the Lamborghini unit.

Basically that progression caused me to get to where I'm at today, a little over a year later. This turbo setup is the 7th I've made for this car.
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Old May 15, 2015 | 12:07 PM
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Originally Posted by oscs
Just mount your Turbo(s) to the engine..
Whether it's mounted to the frame or engine, there's still no wiggle for anything to expand and contract. I'm looking at getting a set of Reid washbon stainless bellows for 75 a piece. Nice in between.
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Old May 15, 2015 | 04:01 PM
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Originally Posted by PPI Typhoon
Thanks, it's been a long process to get it there. I don't have a build thread on here. I've made a few posts on the Factory Five forums, but not on LS1Tech. I really had no plan on the build. It had a stock LS1 (333whp) and Porsche G50 transaxle. While driving it to work, the alternator went bad. Well, to replace the alternator, I had to remove the gas tanks.

So if the gas tanks are out, I might as well replace them with sheetmetal tanks.
Since I'm getting new tanks, I need a new fuel system.
Since I'm getting a fuel system, I might as well get the turbos.
Since I'm doing the turbos, I might as well get a fully forged LSX
Since I'm going fully forged, twin turbo, I might as well upgrade the transaxle
Since I'm upgrading the transaxle, might as well upgrade to the Lamborghini unit.

Basically that progression caused me to get to where I'm at today, a little over a year later. This turbo setup is the 7th I've made for this car.
HOLY expensive snowball....ROFL... gearheads. this is exactly how I think also
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Old May 15, 2015 | 04:12 PM
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Originally Posted by droksformula
Whether it's mounted to the frame or engine, there's still no wiggle for anything to expand and contract. I'm looking at getting a set of Reid washbon stainless bellows for 75 a piece. Nice in between.
You dont need "expansion" room if your turbos are hanging off of your motor, Not mounted to your frame.. They can expand and contract all day long with nothing to resist them. Ask me how i know.
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Old May 17, 2015 | 03:56 PM
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Dont use flex on anything ive built but my turbos are usually mated to the manifolds i built


not a fan of flex setups
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Old May 17, 2015 | 04:50 PM
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Originally Posted by ScreamingL
Dont use flex on anything ive built but my turbos are usually mated to the manifolds i built


not a fan of flex setups
Exactly.. There is no reason for a flex joint if the turbo(s) are mounted off the manifolds. They can expand and contract together without interference.
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