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What PSI? Nitto 555r

This is a discussion on What PSI? Nitto 555r within the Drag Racing forums, part of the Racing Forums category; Prepping my car for tomorrow's track passes, what psi should I run in my Nitto's (555r) Some ppl have told ...

  1. #1
    Senior Member Z28boy2000's Avatar
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    What PSI? Nitto 555r

    Prepping my car for tomorrow's track passes, what psi should I run in my Nitto's (555r)


    Some ppl have told me 22 is a sound number, any other opinions?

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    i like right around 18 with mine.
    02 TA A4
    408ci - 244/250/612/622 | PRC 237 heads | FTRA |100mm lid | FAST92/92 | Kooks 1 7/8 | Hooker CB | DMH Cutout | built trans | Yank4000 | 412 motorsports tuned | stock rear:judge:

    08 TBSS - Borla CB

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    LSX whore allbaugh_04's Avatar
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    I do 18 if I plan on racing.

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    Moderator 35th-ANV-SS's Avatar
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    Yes. I agree with above. Start at 18 and you may even find going a little lower might hook you up better. Good luck and let us know how they fair out for you.

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    Senior Member Z28boy2000's Avatar
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    sounds like a plan. 18 it is and ill keep you up to date on hook

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    Member c5z28's Avatar
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    Senior Member Z28boy2000's Avatar
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    Quote Originally Posted by c5z28 View Post
    first time ever so i might need it
    2000 B4C Special Service Package Z28 - Kooks 1&7/8 Stepped 2'' - TSP Torquer V.2 - FAST 92/92 - BDR 4000 Conveter - Xtreme Trans Stage II - Full UMI Suspension - Pacesetter LT's - Comp Drag Shocks - Magnaflow - Cutout - ZO6 MAF - FTP LID - Street Tuned -

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    Member c5z28's Avatar
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    Just do us a favor and post all the info on the 1/4 mile slip instead of posting you got a 14.3 and don't know what happened

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    Senior Member Z28boy2000's Avatar
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    hahah will do

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    Slow'er'Ass Mr. Luos's Avatar
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    I start at 18 and work my way down with those.

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    Senior Member Z28boy2000's Avatar
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    well i was set and ready to go but it is 100 today and 107 with the humidity...the track temp was near 130 so i decided to wait on going today

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    Quote Originally Posted by onyx_rock View Post
    i like right around 18 with mine.
    Quote Originally Posted by allbaugh_04 View Post
    I do 18 if I plan on racing.
    Quote Originally Posted by 35th-ANV-SS View Post
    Yes. I agree with above. Start at 18 and you may even find going a little lower might hook you up better. Good luck and let us know how they fair out for you.
    I ran mine at 18 and they worked fine til I did the stall. After that it didn't matter what psi I went with...

    That's why I now use MT ET Street DR's....
    67 Camaro: K-K + 797-z (look it up), 454/Th400/4.10 12-bolt = 6mpg, PS/PDB/PW tilt, tach, gauges...

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    2002 Z28: NBM/Tan, MTI smooth lid, smooth bellows, !AIR, !cats, 1-3/4" QTP SS LT's, 2-1/2" TD's with X-pipe, MagnaFlows dumped at axle, custom welded SFC's, MidWest Chassis body mount adjustable T/A, 3400 stall, 3.23 gears (was 2.73). Tuned: 343rwhp/357rwt (before TD's). Best: 12.559 @ 108+, 1.73 60' @ 3500' DA w/MT ET Street DR's.

    Carbon footprint? CLOWN SHOE!

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    Member c5z28's Avatar
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    Quote Originally Posted by 67CamaroRSSS View Post
    I ran mine at 18 and they worked fine til I did the stall. After that it didn't matter what psi I went with...

    That's why I now use MT ET Street DR's....
    Did you have dr's with gears before the stallor stock gears? I ask because I tried something similar with some v710's at the track and my car would not have any of it.

  14. #14
    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
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    Quote Originally Posted by onyx_rock View Post
    i like right around 18 with mine.
    Quote Originally Posted by allbaugh_04 View Post
    I do 18 if I plan on racing.
    Quote Originally Posted by c5z28 View Post
    Did you have dr's with gears before the stallor stock gears? I ask because I tried something similar with some v710's at the track and my car would not have any of it.
    Exhaust was the 1st mod. 3.73 gears were next (I now have 3.23's as I burned/broke 3 sets of 3.73's). Then came the stall. Then came the Mickey's to handle the stall...

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    Member c5z28's Avatar
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    Quote Originally Posted by 67CamaroRSSS View Post
    Exhaust was the 1st mod. 3.73 gears were next (I now have 3.23's as I burned/broke 3 sets of 3.73's). Then came the stall. Then came the Mickey's to handle the stall...
    How did the 3.73's and nitto dr's do at the track before the stall? Although burning through 3 sets of gears isn't something I like the idea of.

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    Quote Originally Posted by onyx_rock View Post
    i like right around 18 with mine.
    Quote Originally Posted by allbaugh_04 View Post
    I do 18 if I plan on racing.
    Quote Originally Posted by c5z28 View Post
    How did the 3.73's and nitto dr's do at the track before the stall? Although burning through 3 sets of gears isn't something I like the idea of.
    The time in my sig was with 3.73 gears. Best pass prior to the stall was 13.09 @ 108+ with a 1.9x 60'.

    The 1st set was Motive. They whined like a whore that didn't get paid.

    The 2nd set was Richmond. They started to whine after about 25 passes.

    Next set was AAG (basically factory). They were quiet till I started to race again. After about 50 passes the pinion bearing bearing sorta welded itself to the pinion. This was the set I did the 12.559 with.

    The current set is a factory set of used 3.23's that my buddy installed. I've yet to take them to the track (It's too hot to race these days here in PHX). I had them installed for the cruise to the LA Invasion. No noise over the last 1,000 miles or so.

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    Member c5z28's Avatar
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    Now all I can think about now is how to make my rear last with 3.73's
    Sort of hoping that 12.5 was before the stall

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    Quote Originally Posted by c5z28 View Post
    Now all I can think about now is how to make my rear last with 3.73's
    Sort of hoping that 12.5 was before the stall
    Don't forget the average DA here in PHX is 3500'. Take about .3 seconds off for sea level...

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    LSX whore allbaugh_04's Avatar
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    Seems like installing gears always ends up with a whine.

    Gotta find me a used 10-bolt.

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    Quote Originally Posted by allbaugh_04 View Post
    Seems like installing gears always ends up with a whine.

    Gotta find me a used 10-bolt.
    If your still looking next spring, I may have one with less than 25K to part with...depends on how my mod budget looks over winter...and how bored I get when there is 6' of snow blocking the WS6 into the garage.

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