Is this a serious issue for BT guys (or even k04 high psi)

[El Beaner]

Not bashing JBR kit, I have it and am happy with it but one day I plan on going BT. As it is now I peak at 23 psi and according to the video this is only 20-21 psi.

This was posted to a Dallas Facebook page

YouTube Short

YouTube Short

[aaronc7]

Pretty cool video really. Variable volume piping...it's a feature!

[tytanium]

I have the jbr kit @ 22psi on a 2871 and haven't noticed any issues, but this definitely got my attention

[NCspecV81]

@tytanium; the likelihood of you noticing this until it's too late is very high. Your's is likely doing the samething under WOT/boost conditions. You just don't have a camera there to capture it.

[NCspecV81]

Here's an interesting tidbit. Here's a boost curve from vdyno bewteen a BNRs4 with JBR piping and HTA3586 with stainless steel hard pipes from a UR kit.

See if you can decipher which is which. These were taken in the same geographical region on the same day within 30 minutes of one another.

[Zoom66]

I am putting my car on the dyno next weekend and will try to get my GoPro to record this action to investigate. I have the underside piping as well with a TR8 core. My tune peaks at 26 psi.

[sheston]

How many times can it do that before the balloon pops? Wonder what it looks like closer to 30 psi

[speedfreak44]

I would have to say blue is the hardpipe one

[Djohns]

Woah. Now this is an interesting find! Thank you!

[Djohns]

Originally Posted by NCspecV81 Here's an interesting tidbit. Here's a boost curve from vdyno bewteen a BNRs4 with JBR piping and HTA3586 with stainless steel hard pipes from a UR kit. See if you can decipher which is which. These were taken in the same geographical region on the same day within 30 minutes of one another.

I'm going to say the red is JBR?

[JBR]

The piping was tested at 40 psi for continuous periods of time much longer than a wot pull. Burst rated at 150 psi. We haven't seen any problems for the two years they've been available.

HP is not effected nor is acceleration. Lag is increased a a wee bit.

The graph is not really apples to apples. Two different turbos and likely two different tunes.

We've been tracking our shop Mazdaspeed 3 for two years with no issues.

Lifetime warranty = nothing to be concerned about.

[klingon]

Interesting find! Although someone was telling me about having a hole blown in their bumper, but I never saw any proof.

[Yatta]

Originally Posted by JBR The piping was tested at 40 psi for continuous periods of time much longer than a wot pull. Burst rated at 150 psi. We haven't seen any problems for the two years they've been available. HP is not effected nor is acceleration. Lag is increased a a wee bit. The graph is not really apples to apples. Two different turbos and likely two different tunes. We've been tracking our shop Mazdaspeed 3 for two years with no issues. Lifetime warranty = nothing to be concerned about.

So to clarify, 40 PSI constant at what temperature(s) (does hotter charge air change the burst rating)?
Was pressure varied on the test or just held at 40 PSI?
Does the tubing hit a maximum expansion point or will it increase with pressure?
Fully expanded are there clearance issues (i.e. sharp, pointy or abrasive wear on exterior of tubing)

During fault analysis/testing what failed first? the tubing or the clamps?

It doesn’t surprise me that it expands, couplers do the same thing but to a much lessor degree.

Thanks!

[JSmith]

The silicone couplers I've Qualified were tested under harsher conditions than an engine bay will ever see and lasted over 100K cycles. Apples to oranges perhaps but the silicone impregnated cloth can potentially be OK.

[shaneski]

Mines been running the JBR cold side silicone FMIC pipe for a year around 29psi and so far it's still in one piece.

[sheston]

I guess I was assuming there was something wrong with the pipes in the video. Thinned some how, inferior material, ....

[speedfreak44]

Correct me if I am wrong @JBR; but don't these have a metal wire wrapped through them like the intakes? I am actually surprised they move that much

[JBR]

Originally Posted by Yatta So to clarify, 40 PSI constant at what temperature(s) (does hotter charge air change the burst rating)? Was pressure varied on the test or just held at 40 PSI? Does the tubing hit a maximum expansion point or will it increase with pressure? Fully expanded are there clearance issues (i.e. sharp, pointy or abrasive wear on exterior of tubing) During fault analysis/testing what failed first? the tubing or the clamps? It doesn’t surprise me that it expands, couplers do the same thing but to a much lessor degree. Thanks!

Pulse testing was performed at 30, 35 & 40 PSI for 50 seconds per cycle. 30 cycles each.

Test pressure was reached in the first 15 seconds and held for the remaining 30.

Testing was performed at 155* F.

Temperatures below 300* F have no effect on the burst rating.

Max temperature rating 500* F.

Maximum expansion is reached at ~18psi

Clamp and hose failure never occurred during testing. Bust rating is given based on hose diameter, layers of silicone, layers of reinforcement and other data collected based on use by the manufacturer over many years of being in business.

Piping was designed with clearance taken in to account. Rubbing can cause failure and must be mitigated by the customer. Failure due to rubbing is not covered by the warranty.

[Shwaykid]

Real world:

I have more than 20k miles on this kit in a year; not a single issue. Mods in sig, target boost is 19psi.

I don't go to the track or the strip, but I have plenty of pulls on it. I have always hit and hold boost targets.

[Yatta]

Originally Posted by JBR Pulse testing was performed at 30, 35 & 40 PSI for 50 seconds per cycle. 30 cycles each. Test pressure was reached in the first 15 seconds and held for the remaining 30. Testing was performed at 155* F. Temperatures below 300* F have no effect on the burst rating. Max temperature rating 500* F. Maximum expansion is reached at ~18psi Clamp and hose failure never occurred during testing. Bust rating is given based on hose diameter, layers of silicone, layers of reinforcement and other data collected based on use by the manufacturer over many years of being in business. Piping was designed with clearance taken in to account. Rubbing can cause failure and must be mitigated by the customer. Failure due to rubbing is not covered by the warranty.

So not having this kit, do the directions for installation indicate how much clearance is needed do to expansion to avoid rubbing? You did pulse testing which is great, really what I was asking about, but clearly some are a little shocked by the expansion and covering this in the install doc would (should) alleviate those concerns.

[rob ms6gt]

How were you guys expecting a silicone hose to react?

[Boost_creep]

Originally Posted by Yatta So not having this kit, do the directions for installation indicate how much clearance is needed due to expansion to avoid rubbing? You did pulse testing which is great, really what I was asking about, but clearly some are a little shocked by the expansion and covering this in the install doc would (should) alleviate those concerns.

Fixed

[Yatta]

Originally Posted by Boost_creep Fixed

thanks. me and english, english and I....