Is a flex tube 100% necessary on the DP?
#46
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I'd like to point out FM uses a 100lb cast dp elbow.
"The pipes are cut and bent on a massive CNC (computer numerical control) pipe bender for consistency and accuracy. Due to the accuracy of the process, we were able to remove a heavy, expensive flex joint that was also a potential failure point."
Ironic isn't it. "We saved 3lbs on your downpipe by adding a 20lb elbow."
"The pipes are cut and bent on a massive CNC (computer numerical control) pipe bender for consistency and accuracy. Due to the accuracy of the process, we were able to remove a heavy, expensive flex joint that was also a potential failure point."
Ironic isn't it. "We saved 3lbs on your downpipe by adding a 20lb elbow."
#47
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I'd like to point out FM uses a 100lb cast dp elbow.
"The pipes are cut and bent on a massive CNC (computer numerical control) pipe bender for consistency and accuracy. Due to the accuracy of the process, we were able to remove a heavy, expensive flex joint that was also a potential failure point."
Ironic isn't it. "We saved 3lbs on your downpipe by adding a 20lb elbow."
"The pipes are cut and bent on a massive CNC (computer numerical control) pipe bender for consistency and accuracy. Due to the accuracy of the process, we were able to remove a heavy, expensive flex joint that was also a potential failure point."
Ironic isn't it. "We saved 3lbs on your downpipe by adding a 20lb elbow."
What I asked wasn't whether it's heavier but whether the current FM downpipe tends to break. If your only answer is useless sarcasm why bother.
#50
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lol
Guess I have to spell it out for you. It can't break because they use a heavy wall, cast iron piece. FM has no place in this conversation because no one else uses a cast elbow. Just because they don't use one, doesn't mean one is not needed.
Tim on the other hand makes a fabricated piece, so if he doesn't use a flex, maybe one isn't needed. Either way, I'll take my cheap insurance.
Guess I have to spell it out for you. It can't break because they use a heavy wall, cast iron piece. FM has no place in this conversation because no one else uses a cast elbow. Just because they don't use one, doesn't mean one is not needed.
Tim on the other hand makes a fabricated piece, so if he doesn't use a flex, maybe one isn't needed. Either way, I'll take my cheap insurance.
#51
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My fabricated Greddy replacement DP didn't have a flex, and never had a problem with it (neither did the original DP either). My BEGI does have a flex and I wish it didn't. The flex is significantly larger than the 2.5" pipe leaving very little clearance around it, so getting the DP in a place where the flex doesn't rub is difficult.
#54
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For the record, I haven't had a flex pipe on any of the 3 turbo setups I have used and had no issues with cracking. But I also never attached it at the transmission and had good motor mounts.
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