View Poll Results: i'd pay for this... how much
250 dollars
0
0%
275 dollars and more
0
0%
Voters: 32. You may not vote on this poll
stainless steel intake tubes
Burning Brakes
Joined: Jan 2002
Posts: 842
Likes: 0
From: Springfield, MO
Originally Posted by Hacker-Pschorr
Have you measured this?
How many racer guys are using the stock tubes?
Administrator
Joined: Aug 2001
Posts: 27,592
Likes: 3,103
From: Up Nort
Originally Posted by JKelly
How many racer guys are using the stock tubes?
My point is, dyno comparisons with / without the tubes have shown no increase. So how restrictive can they be?
Racer
Joined: Jan 2007
Posts: 391
Likes: 0
From: North Las Vegas
Originally Posted by ceedee
heat is not as much of an issue as i anticipated.
the constant flow keeps it in acceptable areas.
moreover, i feared there would be a noice issue with the tubes.
but it doesn't appear that way.
the constant flow keeps it in acceptable areas.
moreover, i feared there would be a noice issue with the tubes.
but it doesn't appear that way.
Burning Brakes
Joined: Jan 2002
Posts: 842
Likes: 0
From: Springfield, MO
Originally Posted by Hacker-Pschorr
Most 928 race cars are not using the stock air box - big difference. My point is, dyno comparisons with / without the tubes have shown no increase. So how restrictive can they be?
Burning Brakes
Joined: Jan 2002
Posts: 842
Likes: 0
From: Springfield, MO
Originally Posted by Hacker-Pschorr
So how restrictive can they be?
Originally Posted by Sterling
I watched my plastic tubes get sucked flat during a full throttle run on the dyno with my 6.4 liter.......
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Drifting
Joined: Aug 2006
Posts: 2,902
Likes: 78
From: Reno, NV
Has anybody ever done anything with force air induction (Ram Air) on these cars? It's always seemed to me that Porsche stopped one step short, terminating the induction point aboce the radiator rather than behind the grill where it can get some fresh, cold air...
Thread Starter
Three Wheelin'
Joined: Jul 2006
Posts: 1,505
Likes: 0
From: celtown, florida
Originally Posted by Sterling
Stainless is expensive. .049 wall 304 stainless is $23 per foot. You will need approximately 28 inches for each side...... so 5 feet per car... that $115 without clamps or boots. or polishing. Polishing stainless is time consuming. Now if you have access to pre polished Stainless 3 inch tubing that are considered srcaps by some companies you might get them for almost free..... but most companies that are using raw materials will recycle the scraps to keep their cost down.
I think that $275 is a bit steep especially since it won't help performance much for most cars and could quite possibly hurt performance from heat soaking.....
I think that $275 is a bit steep especially since it won't help performance much for most cars and could quite possibly hurt performance from heat soaking.....
if i could round up a goup buy, then i would do it for 200,-
for now the price is set at 229,-
also, i haven't heard back from randy back on my notion to become a supporter of rennlist and be able to sell stuff over here.
he forwarded things to john and is waiting on his appoval.
Under the Lift
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Mar 2002
Posts: 18,648
Likes: 52
From: Buckeye, AZ
ceedee:
We need a lot more people like you who invest there own time and energy into developing new products for these old cars. In this case, I think you've picked an issue to address that is real, but have overkilled your solution, at least for the bulk of 928 owners. Even the clamps are way over the top. The ones on the front look like they could hold 100 PSI induction. On a NA'd car I don't think any clamps should be needed with the right connectors.
There are other tubing solutions, like the late Mercedes intake tubes, and Sterling's silicone tube suggestion that are far cheaper to build and still attractive. SLC Motorsports has packaged the Mercedes tubes with connectors and sells them. I've even seen insulated tubes on some 928s that are a potentially better solution in terms of cold air. Also, becoming a Rennlist sponsor is not inexpensive.
I would keep this particular design a one-off and work on alternatives or tackle another issue. You've got talent.
We need a lot more people like you who invest there own time and energy into developing new products for these old cars. In this case, I think you've picked an issue to address that is real, but have overkilled your solution, at least for the bulk of 928 owners. Even the clamps are way over the top. The ones on the front look like they could hold 100 PSI induction. On a NA'd car I don't think any clamps should be needed with the right connectors.
There are other tubing solutions, like the late Mercedes intake tubes, and Sterling's silicone tube suggestion that are far cheaper to build and still attractive. SLC Motorsports has packaged the Mercedes tubes with connectors and sells them. I've even seen insulated tubes on some 928s that are a potentially better solution in terms of cold air. Also, becoming a Rennlist sponsor is not inexpensive.
I would keep this particular design a one-off and work on alternatives or tackle another issue. You've got talent.
Last edited by Bill Ball; Apr 20, 2007 at 03:47 PM.
Banned
Joined: Jun 2005
Posts: 4,023
Likes: 724
From: NJ but from Boston
P. Jaeger posted a pic a while ago of their prototype carbon fiber intake tubes.
They looked great and were due out this spring. There is a pic floating around somwhere in R-list.
unless ceramic coated any metal material will become a heat sink.
Rich
They looked great and were due out this spring. There is a pic floating around somwhere in R-list.
unless ceramic coated any metal material will become a heat sink.
Rich
Captain Obvious
Super User
Super User
Joined: Aug 2003
Posts: 22,846
Likes: 348
From: Cambridge, Ontario, Canada
Originally Posted by Bill Ball
ceedee:
We need a lot more people like you who invest there own time and energy into developing new products for these old cars. In this case, I think you've picked an issue to address that is real, but have overkilled your solution, at least for the bulk of 928 owners. Even the clamps are way over the top. The ones on the front look like they could hold 100 PSI induction. On a NA'd car I don't think any clamps should be needed with the right connectors.
There are other tubing solutions, like the late Mercedes intake tubes, and Sterling's silicone tube suggestion that are far cheaper to build and still attractive. SLC Motorsports has packaged the Mercedes tubes with connectors and sells them. I've even seen insulated tubes on some 928s that are a potentially better solution in terms of cold air. Also, becoming a Rennlist sponsor is not inexpensive.
I would keep this particular design a one-off and work on alternatives or tackle another issue. You've got talent.
We need a lot more people like you who invest there own time and energy into developing new products for these old cars. In this case, I think you've picked an issue to address that is real, but have overkilled your solution, at least for the bulk of 928 owners. Even the clamps are way over the top. The ones on the front look like they could hold 100 PSI induction. On a NA'd car I don't think any clamps should be needed with the right connectors.
There are other tubing solutions, like the late Mercedes intake tubes, and Sterling's silicone tube suggestion that are far cheaper to build and still attractive. SLC Motorsports has packaged the Mercedes tubes with connectors and sells them. I've even seen insulated tubes on some 928s that are a potentially better solution in terms of cold air. Also, becoming a Rennlist sponsor is not inexpensive.
I would keep this particular design a one-off and work on alternatives or tackle another issue. You've got talent.
