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cossies, when do you have full boost ?

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Old 27-11-2006, 03:27 PM
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sygjim
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Default cossies, when do you have full boost ?
Hi,

i have a hybrid t3/t4 and i had datalog a run, and i have full boost after 4300rpm

so, could you tell me with your t34,t38,t4 or gtxx the rpm level where you have your full boost ?
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Old 27-11-2006, 03:31 PM
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ut t38...just under 3500
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Old 27-11-2006, 03:32 PM
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just under 3500

a dream

how many psi ?
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Old 27-11-2006, 03:37 PM
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hits 30, then holds 28 psi, feels really strong
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Old 27-11-2006, 03:43 PM
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T34, in a high gear makes just under 2 bar by 3500, in first its more like 4500 though
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Old 27-11-2006, 03:48 PM
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Originally Posted by chip-3door
T34, in a high gear makes just under 2 bar by 3500, in first its more like 4500 though
dosn't the rear housing make a difference.....it was 3300 with a .48
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Old 27-11-2006, 03:57 PM
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I have a T34.55 and a ported head, mine makes full boost (1.5bar) at 3050rpm

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Old 27-11-2006, 04:00 PM
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so, at this moment, the t38 is a good choice
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Old 27-11-2006, 04:07 PM
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Originally Posted by sygjim


so, at this moment, the t38 is a good choice
only with the correct spec head yes.
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Old 27-11-2006, 04:09 PM
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yes, it's the next step on my motor
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Old 27-11-2006, 04:16 PM
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the one i have is a universal t 38 not a turbo techniques t38, the uni t38 spins up quicker
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Old 27-11-2006, 04:17 PM
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Yes a smaller rear housing will generally mean a turbo reaches boost sooner.
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Old 27-11-2006, 04:19 PM
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Default boost
Fuck knows T35 hybrid and i just hold onto the steering wheel and point the car in the direction i want it to go


Luciano
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Old 27-11-2006, 04:20 PM
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my gt35 makes more boost than that at those revs
u must have a boost leak
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Old 27-11-2006, 04:23 PM
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i hit full boost 2.3 bar 3500rpm on a ut t38
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Old 27-11-2006, 04:35 PM
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whats the top wack for a ut t38 (bhp) i've been trying to find it on here
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Old 27-11-2006, 04:39 PM
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pete mcrash
well mine at 2bar made 425 bhp with lost of room for erro made 444bhp at 2.2 bar but had a loom fault so was left ther i think good for 450bhp
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Old 27-11-2006, 04:45 PM
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Default Re: boost
Originally Posted by charlie luciano
Fuck knows T35 hybrid and i just hold onto the steering wheel and point the car in the direction i want it to go


Luciano

Im just the same
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Old 27-11-2006, 05:58 PM
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TT T38 full boost at 3400rpm 450 bhp 2 bar ....
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Old 27-11-2006, 06:05 PM
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check your cam timing, sounds to me like your exhaust cam is a tooth out
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Old 27-11-2006, 06:07 PM
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full boost by 4k on a T4.(2.5 bar)
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Old 27-11-2006, 06:21 PM
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Originally Posted by Alg1k
my gt35 makes more boost than that at those revs
u must have a boost leak
what do you mean by "Boost leak"
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Old 27-11-2006, 06:23 PM
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On full boost just over 2000rpm

then mine almost gone when most of yours starts
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Old 27-11-2006, 06:28 PM
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Default Re: boost
Originally Posted by charlie luciano
Fuck knows T35 hybrid and i just hold onto the steering wheel and point the car in the direction i want it to go


Luciano
Mate, you are a proper funny cunt at times
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Old 27-11-2006, 06:40 PM
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Originally Posted by sygjim
Originally Posted by Alg1k
my gt35 makes more boost than that at those revs
u must have a boost leak
what do you mean by "Boost leak"
boost leaking somewhere
boost pipes
dump valve diaphram split
penny in ex housing leaking slightly
Exhaust wheel damaged
etc etc
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Old 27-11-2006, 06:50 PM
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a pic of my datalog :

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Old 27-11-2006, 06:57 PM
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I have a turbo dynamics t38 and thats at full boost at 3500 ie 30 psi
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Old 27-11-2006, 07:01 PM
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think this t38 boost thing is just up to a decent map....they all seem to come in the same all 3 types
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Old 27-11-2006, 07:02 PM
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Originally Posted by sygjim
a pic of my datalog :

Tension Papillon, thats the throttle butterfly, right?

If that logger is correct you aint on full throttle as the butterfly is only open 70.92 degrees, even lower in the midrange. Should see around 83-84 degrees with a wide open throttle. Might be worth checking the sensor too.
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Old 27-11-2006, 07:22 PM
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the max throttle is 80.8, it's just a part of the log
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Old 27-11-2006, 07:44 PM
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Originally Posted by pete mcrash
the one i have is a universal t 38 not a turbo techniques t38, the uni t38 spins up quicker
do you have a website link for the universal t38 ?
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Old 27-11-2006, 07:56 PM
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the web site is a bit shit,not much info really, better off phoneing them http://www.universal-turbos.com/head.htm
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Old 28-11-2006, 06:25 AM
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Dont have access to my logs right now but I think my T34 Hybrid (0.48 from Universal Turbos) reach full boost (1,7 bar) around 3250-3350. Could double check that when I get home tonight.
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Old 28-11-2006, 07:12 AM
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HAVE YOU CHECKED YOUR CAM TIMING?? do the simple stuff first
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