Page 1 of 1
What needs to be adjust after fitting a Turbo
Posted: Thu Jul 22, 2004 11:51 pm
by turps
As the topic says, what needs to be adjusted after fitting a turbo???
Is it just he fuel that need s to be inreased or is it abit more tech than that.
Posted: Fri Jul 23, 2004 6:24 am
by GQ TROL
Essentially thats about it. Adjust the fuel up a touch, usually about 1/4 of a turn out (but depends on the turbo kit) and take it out for a skid. May want to increase boost pressure slightly from whatever it was set at. If you do, then will have to adjust fuel again to match. TD42's reliably run 14psi or so all day everyday without any dramas.
Have you / are you intending to fit an aneroid to the pump? Installed a 3" exhaust etc to get the most out of it?
Cheers
Mitch
Posted: Fri Jul 23, 2004 6:36 am
by bazzle
Also an EGT gauge is a good investment..
Bazzle
Posted: Fri Jul 23, 2004 6:43 am
by GQ TROL
Also an EGT gauge is a good investment..
Bazzle
Oh yeah, a pyro is well worth the money! And maybe a good quality boost gauge to keep an eye on things. After we fitted my turbo, the bracket for the wastegate actautor started flexing (dodgy booty fab
) and pressure started dropping off. Was an easy fix once we figured it out.
Cheers
Mitch
Posted: Fri Jul 23, 2004 9:47 am
by bogged
spend the $ and get the pump setup properly..
the denco kit says to turn it 1/4 turn, not very good in my eyes... spend a few $ and get it sorted properly for your investment..
I have now fitted an EGT, BOOST and TEMP gauge in a Dashpod, looks sweet.. and is very helpful to see Zaust temps.. Very important too life of engine...
Posted: Fri Jul 23, 2004 11:35 am
by turps
was a question that was asked else where. As they maybe about to aquire a GU turbo to be put on a GQ. If I can find one for myself at the right price I planned on fitting a EGT and Boost gauge's to keep an eye on things.
Just thought the main thing to adjust was fuel. So was thinking with the EGT gauge installed, just keep winding the fuel up untill the EGT's reach about 550c under load.
Posted: Fri Jul 23, 2004 11:40 am
by Deano
On the EGT Sensor.
Is there a nominal operating temp mentioned for an aftermarket turboed GQ/GU, or are you just measuring it for the sake of measuring it?
I guess an EGT gauge is only useful if you actually know what the optimal, and an excessively hi temp is?
Deano
Posted: Fri Jul 23, 2004 11:43 am
by bogged
Deano wrote:On the EGT Sensor.
Is there a nominal operating temp mentioned for an aftermarket turboed GQ/GU, or are you just measuring it for the sake of measuring it?
I guess an EGT gauge is only useful if you actually know what the optimal, and an excessively hi temp is?
Deano
as Turps says 550 is around as hot as you wanna go. Mine has only hit 450 so far, so happy with that.
Posted: Fri Jul 23, 2004 11:46 am
by GQ TROL
Just thought the main thing to adjust was fuel. So was thinking with the EGT gauge installed, just keep winding the fuel up untill the EGT's reach about 550c under load.
Unless you're doing serious fuel pump mods, it is unlikely you will get much above 550c, so its probably a good benchmark to work to.
We've had the race truck over 600c on a number of occasions with no ill effects.......so far.
Posted: Fri Jul 23, 2004 2:15 pm
by bazzle
450 to 550 c. Thats with the sensor just after Turbo.
Before can be a 100 plus more degrees. 600 to 650 even 700 at manifold.
Bazzle
Posted: Sat Jul 24, 2004 12:34 pm
by sparky
bazzle wrote:450 to 550 c. Thats with the sensor just after Turbo.
Before can be a 100 plus more degrees. 600 to 650 even 700 at manifold.
Bazzle
My GU has the sensor before the turbo and up a long hill with the foot down gets upto 750 - 800 degrees c .
Posted: Sat Jul 24, 2004 10:46 pm
by bogged
sparky wrote:My GU has the sensor before the turbo and up a long hill with the foot down gets upto 750 - 800 degrees c .
If its that hot before the turbo, it will be hotter after the turbo... Wouldnt it?
Posted: Sun Jul 25, 2004 9:31 am
by sparky
bogged wrote:sparky wrote:My GU has the sensor before the turbo and up a long hill with the foot down gets upto 750 - 800 degrees c .
If its that hot before the turbo, it will be hotter after the turbo... Wouldnt it?
Hope not.
Posted: Sun Jul 25, 2004 10:35 am
by bazzle
Cooler after Turbo . About 100c or so.
Imagine turbo turns using power of heat energy to turn it.
Needs power conversion to turn it.
Got the maths on it somewhere
Bazzle
Posted: Sun Jul 25, 2004 10:37 pm
by Trav
i have after market denco kit with three inch exhust, no muffler sounds great i have mine running on 15 - 16 pound all day every day it certainly starts to go at about 15 pound good fun not sure what my exhust temp is dont really wana no just another thing to keep watch on rather keep eye on track i had a mate who is a diesel machanic he just wound up the pump until it started blowing smoke the backed it off alittle obviously more boost requires more fuel, but over fueling isnt good either.
Posted: Sun Jul 25, 2004 11:11 pm
by BAS
Boost levels depend on if the vehicle is fitted with an intercooler or not, exhaust temps should not exceed 660 before the turbo when held flat for 60 seconds on the dyno. Depending on the rpm the air/fuel ratio should not be any richer than 19.0:1. Exhaust temps can be partly control by boost. If you do have an intercooler the boost shouldbe measured before and after the intercooler.