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Increasing Boost
Posted: Thu Mar 13, 2003 1:33 pm
by baby_troupe
I have a Import Prado 2.4 TD (2LTE I think) & was just reading about a Hilux Surf in the current 4wd monthly mag.
He is apparently running 10psi boost & has a very similar engine to what I have. :o
How would I go about increasing my boost & what are the repercussions
Posted: Thu Mar 13, 2003 6:12 pm
by NICK
bleed the accuator line and get more fuel into it, the turbo and engine life wont be as long, but i doubt 10psi is going to make a differance.
NICK
Posted: Fri Mar 14, 2003 9:49 am
by bj on roids
any tuning shop will charge you from $80 to a couple of hundred dollars, and you will NOTICE the difference, and you can instruct them what you want too
best to have a professional just "tune" it for some more power and a little more boost, and the repercussions wont be that bad, if any!
Posted: Fri Mar 14, 2003 11:37 am
by baby_troupe
Thanks BJ.
There is a Turbo place in Gosford which has been recommended to me, so I will see them re a tune the rest.
Ya never know, it may have some get up and go after that.
Posted: Fri Mar 14, 2003 11:51 am
by JK
baby_troupe wrote:Thanks BJ.
There is a Turbo place in Gosford which has been recommended to me, so I will see them re a tune the rest.
Ya never know, it may have some get up and go after that.
What place is that?
Posted: Fri Mar 14, 2003 1:05 pm
by baby_troupe
Central Coast Turbo's (I think that is the name)
They are near the Nissan dealer, just off Mann St
Posted: Fri Mar 14, 2003 1:09 pm
by JK
Yep know the place... I've had the GQ serviced there before.
Cheers, JK
Posted: Sat Mar 15, 2003 1:47 pm
by NICK
bj on roids wrote: and you will NOTICE the difference, and you can instruct them what you want too
sorry should have explained it better, you will notice more power, when i say there will be no difference i was refering to the life of the turbo at 10psi.
NICK
Posted: Tue Mar 18, 2003 7:40 am
by bj on roids
its cool nick, by NOTICE i was telling him he will notice it, once again, i took no notice of what you said!!
Posted: Tue Mar 18, 2003 11:17 am
by dumbdunce
quick and dirty tip: you cannot adjust anything on the fuel pump on the 2L-TE, and the electronics are not tuneable. the computer probably has mappings for up to 10 - 12psi, no guarantees though.
to increase your boost for free, you can use washers to pack out the wastegate actuator - each 1mm of packing will give you about 1psi peak boost increase. probably not a good idea to exceed 10 - 11psi with the stock CT20 turbo, as turbos go it is pretty ordinary.
there are probably internal mods you can make to the 2L-TE pump to increase fuelling but I haven't pulled one apart yet.
the 'proper' way to increase boost is with an electronic or mechanical boost controller, these are beteween $80 - $1000 depending on features and quality, and easy enough to install yourself.
Posted: Tue Mar 18, 2003 5:29 pm
by Hoonz
has any one played with a safari turbo set up on a GQ patrol 4.2 diesel?
I've got an intercooler too .. still lookin for more power
Posted: Tue Mar 18, 2003 5:49 pm
by dumbdunce
not specifically, but the principles are identical for any turbo diesel. to increase boost, fit a boost controller (generally these work by bleeding air from the wastegate actuator line) - you can make one with a tee piece and a small inline valve - or maybe the safari turbo already has one, but I doubt it. you will need a boost gauge and ideally an EGT gauge to tune it correctly - if you increase boost you need to adjust your fuelling to take full advantage of the extra air. I would not exceed approx 12psi with that motor, and your EGT should never exceed 650C - 600 is better. any hotter than that and you are guarantted to be damaging all the hot-getting bits - turbo turbine, exhaust valves, injectors, precombustion chambers, head, piston crowns, etc. have a read of:
http://www.birfield.com/archives/html/d ... 00040.html
Ian Bragg, who wrote the above article, is a top bloke and won't mind helping you out further. tell him Brian fromm DTLC sent you.
cheers Brian