Intake hardpipes- boost response
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Joined: Feb 2001
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From: Silicon Valley Bay Area
Originally posted by matty
you are a wierd dude...!
i wasnt punching anyone....i was simply stating my opinion that the hard pipes couldnt possibly offer anything besides being attractive.
if others disagree..then they disagree.
you are a wierd dude...!
i wasnt punching anyone....i was simply stating my opinion that the hard pipes couldnt possibly offer anything besides being attractive.
if others disagree..then they disagree.
If u weren't punching at anyone what does "butt dyno" and "crazy" have to do in ur aforementioned responses?
U sure have a nice way of being friendly.........
Banned. I got OWNED!!!
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From: Silicon Valley Bay Area
Originally posted by Brentis
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
Originally posted by Brentis
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
1. The bend it the straw will resistrict flow.
2. The diameter of the straw is narrower where the ribs are. This will also restrict flow.
The question to address is:
If the narrowest part of the stock pipe is equal to the narrowest part of a hard smooth pipe, will there be a difference worth the bother of changing. I don't know the answer.
Banned. I got OWNED!!!
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From: Silicon Valley Bay Area
Originally posted by yzf-r1
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
Dunno what the cause was.
Ghost Ride the Whip
Joined: Mar 2001
Posts: 1,467
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From: Foster City, CA
here's an idea that'll put this to rest. Put a car on the dyno without the shiny pipes. Dyno it. Then put the shiny pipes inand see if there is any difference at all, if not then the pipes didn't do anything.
This is not a fair comparison. Two things to consider:
1. The bend it the straw will resistrict flow.
2. The diameter of the straw is narrower where the ribs are. This will also restrict flow.
Yeah thats the whole point of the exersize. The ribs will make it harder to suck then the smooth. i.e. stock pipes vs hard pipes. im assuming that the flex straw is not bent...... that wouldnt be fair as you said. but just try it and see. There may not be a huge performance gain, but it will make everything more efficient.
peace
bobby
1. The bend it the straw will resistrict flow.
2. The diameter of the straw is narrower where the ribs are. This will also restrict flow.
Yeah thats the whole point of the exersize. The ribs will make it harder to suck then the smooth. i.e. stock pipes vs hard pipes. im assuming that the flex straw is not bent...... that wouldnt be fair as you said. but just try it and see. There may not be a huge performance gain, but it will make everything more efficient.
peace
bobby
Senior Member
Joined: Oct 2002
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From: South Florida
If you're referring to my earlier post, it didn't happen to me. I just remember a couple times over the years people have posted on the list about losing boost and power at high rpms and they ended up sourcing it back to collapsing intake hoses. Good question about how to actually see it happening.
jds
jds
Originally posted by yzf-r1
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
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From: Baltimore MD
Originally posted by bureau_c
Rubber intake pipes are not going to swell...they may collapse however, I've heard of that happening with old, weakened stock pipes. Obviously, if that is happening and you replace them, you'll notice a big difference. If your stock accordion hoses are in good shape then I tend to side with those who think the perceived difference is imagination, but that's just me. I could swear I felt a difference when I changed to Royal Purple oil, but I know in my heart of hearts it was purely imaginary.
jds
Rubber intake pipes are not going to swell...they may collapse however, I've heard of that happening with old, weakened stock pipes. Obviously, if that is happening and you replace them, you'll notice a big difference. If your stock accordion hoses are in good shape then I tend to side with those who think the perceived difference is imagination, but that's just me. I could swear I felt a difference when I changed to Royal Purple oil, but I know in my heart of hearts it was purely imaginary.
jds
I meant intercooler pipes i read the post wrong they do swell under boost i know that for a fact
Sensory Experience
Joined: Apr 2002
Posts: 840
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From: MD
Originally posted by Brentis
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
time for some hardpipes.
Sensory Experience
Joined: Apr 2002
Posts: 840
Likes: 1
From: MD
Originally posted by Brentis
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
Here is a kiddie anecdote.
Go buy a straw that has the accordian flex at the top to facilitate bending. Then use a normal straw. Insert each into your favorite liquid and suck. - Compare the resistance of the fluids to each and you note significant increase in effort as well as reduced intake with the flex top.
Try it - or have your kids try it.
time for some hardpipes.
Senior Member
Joined: Oct 2002
Posts: 617
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From: South Florida
Well, sure...they're downstream of the turbos, so they're under pressure....I never denied that intercooler pipes can swell.
jds
jds
Originally posted by rotaryheavenrx7
I meant intercooler pipes i read the post wrong they do swell under boost i know that for a fact
I meant intercooler pipes i read the post wrong they do swell under boost i know that for a fact
From Derek Vanditmars website, low boost cause #3:
Primary Turbo Inlet:
Typically collapses under high volume air through air cleaner into Primary Turbocharger. When the engine is cold the rubber is less prone to collapsing. Typical symptoms are having boost at lower RPMs and then a loss of boost at higher RPMs, this is agravated when engine warms-up softening the rubber allowing for easier and more complete colaspe of the hose. Typically costs about U$90 at dealer.
Primary Turbo Inlet:
Typically collapses under high volume air through air cleaner into Primary Turbocharger. When the engine is cold the rubber is less prone to collapsing. Typical symptoms are having boost at lower RPMs and then a loss of boost at higher RPMs, this is agravated when engine warms-up softening the rubber allowing for easier and more complete colaspe of the hose. Typically costs about U$90 at dealer.
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From: Buckhead
Originally posted by BATMAN
Well my pipes do have 220,000 miles on them........ so maybe that was it.
BTW, that was with BNR stage 2 at i bar of boost, if that mattered.........
Well my pipes do have 220,000 miles on them........ so maybe that was it.
BTW, that was with BNR stage 2 at i bar of boost, if that mattered.........
BTW...where do I buy polished pipes for the RX7 fasion air box? (same as M2).
Yo thanks!
Banned. I got OWNED!!!
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From: Silicon Valley Bay Area
If u want to by the pipes I would contact Jason......... or if u like to pay taxes, u can contact Jason's supplier, Hoover on www.turbohoses.com
Tell him that BATMAN referred u.
The price should be the same as Jason, since Hoover doesn't **** his channel up.
I have a new set of the pipes in wrinkle black from Hoover.
Never did give it back to him.
All u need are the couplers and clamps.
BTW, I do think I have the world's record for FD mileage on the chassis.
Tell him that BATMAN referred u.
The price should be the same as Jason, since Hoover doesn't **** his channel up.
I have a new set of the pipes in wrinkle black from Hoover.
Never did give it back to him.
All u need are the couplers and clamps.
BTW, I do think I have the world's record for FD mileage on the chassis.
Banned. I got OWNED!!!
Joined: Feb 2001
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From: Silicon Valley Bay Area
Originally posted by yzf-r1
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
interesting post on the stock rubber intake tubes collapsing....how did you determine that was happening?
Actually I was drving it hard and one day I noticed that there was little power at boost.
I checked around and noticed that the smaller of the 2 hoses had collapsed.........
That was when I installed the metal pipe version......... end of story and end of problem.
Full Member
Joined: Mar 2003
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From: Manassas VA
No one actually responded to zero banger's question:
"BTW...where do I buy polished pipes for the RX7 fasion air box? (same as M2)."
Can anyone give a list as to which hard pipe kits are compatable with which intakes?
(I am personally interested to see if they will fit the PFS box)
"BTW...where do I buy polished pipes for the RX7 fasion air box? (same as M2)."
Can anyone give a list as to which hard pipe kits are compatable with which intakes?
(I am personally interested to see if they will fit the PFS box)
