« previous next »
Pages: [1]

Author Topic: Tech Question (Turbos)  (Read 1146 times)

Offline Micheal Brigden

  • Full Member
  • ***
  • Posts: 146
Tech Question (Turbos)
« on: June 11, 2003, 04:41:53 pm »
Hey guys,  someone was telling me that r turbos will not spool up when out of gear (neutral, or clutch disengaged) is that true? been a while since i've driven mine, but i seem to remember that they will spool out of gear, so....?
Logged
1 Talon AWD TSi (US Model)
and
77 Ford F-100 w 300 I-6

" The faster you go, the longer you will live"
~Einstein~ (Theory)
Save the racing for the TRACK!!!

Offline Kimyee Lai

  • Hero Member
  • *****
  • Posts: 2154
Tech Question (Turbos)
« Reply #1 on: June 11, 2003, 05:03:04 pm »
A turbo will spin as long as exhaust gases are flowing.  To actually start producing usable boost needs a certain amount of exhaust gas flow, so if you rev it up high and quickly enough in neutral, you will probably get some "boost".
Logged

Offline Jared Clark

  • Hero Member
  • *****
  • Posts: 1948
    • http://Vancouver240.com
Tech Question (Turbos)
« Reply #2 on: June 11, 2003, 05:12:26 pm »
i want to make it so that i can rev it in neutral and let out a big pssttttt but im thinking ill need IC piping and possibly a 3 full inch exhaust , and maybe a ported 2G manifold?
Logged
ormer owner of a '93 AWD
Now: 1989 240SX, 13.5@107
        1990 240SX, 12.4@114

Offline Kimyee Lai

  • Hero Member
  • *****
  • Posts: 2154
Tech Question (Turbos)
« Reply #3 on: June 11, 2003, 05:17:32 pm »
All that work just to let out a PSSHT on neutral? :)  Just get a launch rev limiter and you're set.  Or go hog wild and hit the stock rev limit...I'm sure you'll let out a pretty big PSSHH then!!!!  If any other noises accompany the PSSH, like a BANG or a BOOM, I am not to be held liable!
Logged

Offline Ryan Lore

  • Hero Member
  • *****
  • Posts: 794
Tech Question (Turbos)
« Reply #4 on: June 11, 2003, 07:43:25 pm »
rev it to 6500, it'll psshhhhht!

I think mine does it at 4000 or so.
Logged

Offline George Myshlyayev

  • Hero Member
  • *****
  • Posts: 945
Tech Question (Turbos)
« Reply #5 on: June 11, 2003, 11:51:26 pm »
I can make my bov go on a neutral.  It's sure as hell not as loud as when I'm in gear but enough to turn some heads.  8)
Logged
8 TSi AWD
Boostwell by name
Boost very well by reputation ;)

Offline Ryan Coft

  • Administrator
  • Hero Member
  • *****
  • Posts: 1973
  • Retired!
Tech Question (Turbos)
« Reply #6 on: June 12, 2003, 07:43:11 am »
yes, get a fancy SS UIC from Fraser, modified by Mr. Lore and your BOV goes "PSSSSH" just fine when i'm in neutral..

you can almost hear it over the hole i have in my exhaust. (being fixed)
Logged

Offline Eric Ringrose

  • Hero Member
  • *****
  • Posts: 567
Tech Question (Turbos)
« Reply #7 on: June 12, 2003, 06:14:20 pm »
my BOV makes a super loud noise if i rev it in neutral, i have a K&N and a crushed bov that's it.... and it's vented :)
..oh how i love that sound.... it's like watching 2F2F every time i let off my gas pedal haha
Logged

Chao C. Yin

  • Guest
Tech Question (Turbos)
« Reply #8 on: June 13, 2003, 02:39:07 pm »
2Gs with smaller T25 turbo can build some boost in neutral and let the BOV go off.

And VWs with the Tiny KKK turbo actually spools up whenever you hit the gas,  I often can hear turbowhine from those VW 1.8T engine equipped cars even when they were zipping around slowly in a parking lot.
Logged

Offline John Hartman

  • Senior Member
  • Hero Member
  • *
  • Posts: 17539
Tech Question (Turbos)
« Reply #9 on: June 13, 2003, 05:58:43 pm »
I can't actually get any boost pressure to register on the guage(Autometer Phantom), but I do hear some spooling/bov noises.
Logged
91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
2018 VW Golf Alltrack turbo Tornado Red, 6mt, some free mods

Chris Clark

  • Guest
Tech Question (Turbos)
« Reply #10 on: June 14, 2003, 12:14:13 am »
I can here the BOV, recirculate when I rev the engine from under the hood
Logged

Offline Jordan Gladman

  • Hero Member
  • *****
  • Posts: 883
Tech Question (Turbos)
« Reply #11 on: June 15, 2003, 06:43:32 pm »
i can hit 5psi of boost at 5000rpm on my car... its a 2liter honda...  :D i dont have an intercooler so i think having less piping helps
Logged
Pages: [1]
« previous next »