 14B Max Boost? |
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 Jun 24 2005, 06:36 AM
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#1
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 Eats and sleeps DSM jargin.  Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389  |
What the maximum boost you can get out of a 14B. 18-20psi??
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Jun 24 2005, 08:23 AM
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#2
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
I've been tuning for knock with a logger.
I guess I'll rephrase my question, I was looking for the physical output limit of the turbo-if there is one. I was curious what the maximum boost a 14B can put out and still be efficient. There's got to be a limit before being required to step up to the next size turbo. -------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Jun 24 2005, 09:56 AM
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#3
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DSM Tech Wizard Group: Members Posts: 2,404 Joined: 16-December 03 From: Fletcher/Bloomington Member No.: 214 |
IMO it depends who you talk to. The general consensus is about 17-18. After that efficiency drops off and it creates too much heat to benefit the engine. You can run it at higher pressure levels but it also decreases expected life span.
-------------------- "I hear he tunes the space shuttle also...and that thing is fast"
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Jun 24 2005, 10:40 AM
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#4
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Info Seeker Group: Members Posts: 83 Joined: 22-March 04 Member No.: 261 |
I found a loss of performance above ~18psi.
-------------------- Eric
94 GSX |
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Jun 24 2005, 12:56 PM
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#5
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,035 Joined: 31-March 04 From: Chambana Member No.: 268 |
^^^^bingo.
-------------------- game over.
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Jun 24 2005, 01:15 PM
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#6
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Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
Thanks guys, that's what I was looking for. I figured at some point, you'd reach a performance wall and it would be time to upgrade.
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Jun 24 2005, 03:04 PM
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#7
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DSMCentral Godfather Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
I wouldn't recomend anything over 18psi assuming you keep the knock count in check, unless you want to change parts frequently.
The 14b has been tested to 405cfm @ 15psi with a 6cm2 housing and to 465cfm @ 15psi with a 8cm2 housing. The 16g is good for 505cfm and the 20g is good for 650cfm at the same 15psi. I've seen a list that says the 14b is capable of 275-300HP at 21psi, while a small 16g is capable of 345-365hp at 22psi on vfaq.com. The most I normally ran was 18-19 on the street with my 14b. I did run 24psi at the track and seen someone else run 25psi with 12second passes, but life expectancy of the engine and turbo are shortened greatly. For reference My quarter mile times reflect a 300-310 calculated horsepower at 24psi which means I didn't gain anything over the 21psi listed above. Plus I was using 112octane leaded race gas. -------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places!  |
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