boost ln61
Posted: Tue Sep 20, 2011 8:51 pm
how do i wind up the boost on my 2.4 surf and what is a safe level and how much difference dose it make
Offroad-Express
The opinions and viewpoints expressed by users of Offroad-Express Forums are wholly their own and not necessarily those of Offroad-Express.
https://www.offroadexpress.kiwi:443/Forums/
boost ln61
https://www.offroadexpress.kiwi:443/Forums/viewtopic.php?t=27442
Page 1 of 1
Re: boost ln61
Posted: Tue Sep 20, 2011 8:53 pm
¿?
Re: boost ln61
Posted: Tue Sep 20, 2011 9:09 pm
lincooln wrote:not sure how,
But yea a big difference, wind up fuel to match afterwards, and then the biggest difference will come from doing the exhaust. 2.5" from turbo back. a safe level will be round 18psi I would say at a guess
You dont know how to turn the boost up, but your giving a guess at a 'safe' level to run?
Hmmmm
Re: boost ln61
Posted: Tue Sep 20, 2011 9:50 pm
I wound up the boost and fuel in my 2.4 and it made a huge difference, went from being a slug to gaining speed up hills in 5th.
I wouldnt run anything over 14-16psi without getting an intercooler put on it, Wouldnt go any higher than 10-12psi on a standard exhaust either.
Just have a play around with it (if you know what you doing) might pay to invest in a EGT and boost gauge so you can see whats going on.
As long as its a healthy, solid motor it should be fine just dont push it too far unless you got a spare motor lying around
Cheers
Caleb
I wouldnt run anything over 14-16psi without getting an intercooler put on it, Wouldnt go any higher than 10-12psi on a standard exhaust either.
Just have a play around with it (if you know what you doing) might pay to invest in a EGT and boost gauge so you can see whats going on.
As long as its a healthy, solid motor it should be fine just dont push it too far unless you got a spare motor lying around
Cheers
Caleb
Re: boost ln61
Posted: Tue Sep 20, 2011 10:09 pm
Sorry for the uninformed, useless comment. Will try not to do that again.
Once again sorry for all the hassle
Once again sorry for all the hassle
Re: boost ln61
Posted: Wed Sep 21, 2011 12:33 pm
there is no fixed "safe" level. You can cook an engine with 8 psi just as well as you can with 18 psi. Search some topics on here and you will find you should be adjusting your fuel, boost and exhaust all at the same time and tuning with an EGT gauge.
Do it once and do it right, they are expensive when they blow up..
i'm not saying spend a fortune but 200-300 spent now doing it right is only 10 percent of what it'll cost you if it goes wrong.
We could all tell you "she'll be right mate, just wind it up to 20" but who's paying the bill if it goes wrong?
Good luck .
Do it once and do it right, they are expensive when they blow up..
i'm not saying spend a fortune but 200-300 spent now doing it right is only 10 percent of what it'll cost you if it goes wrong.
We could all tell you "she'll be right mate, just wind it up to 20" but who's paying the bill if it goes wrong?
Good luck .
Re: boost ln61
Posted: Wed Sep 21, 2011 4:46 pm
I shouldn't add my 5c here but, run heaps!!
I was told more than 7psi on my 5L-t and it would die, so I initially ran 12, then just to prove everyone wrong I give it the occasional dose@ above 35psi, I have no Idea exactly how much cause it pins the gauge at abut 3500 rpm..
running heaps of boost wont hurt your engine although it may damage the turbo by over spooling it.
Personally i would keep it under 17psi and i would add an intercooler- once youv'e done the exhaust.
I was told more than 7psi on my 5L-t and it would die, so I initially ran 12, then just to prove everyone wrong I give it the occasional dose@ above 35psi, I have no Idea exactly how much cause it pins the gauge at abut 3500 rpm..
running heaps of boost wont hurt your engine although it may damage the turbo by over spooling it.
Personally i would keep it under 17psi and i would add an intercooler- once youv'e done the exhaust.
Re: boost ln61
Posted: Wed Sep 21, 2011 6:36 pm
will, don't forget your running an IC. that makes a big difference at those higher boost levels.
you really need an IC for 15psi and above. thats why a lot keep the boost down to 10-12psi. engine survival is more about fueling than just boost, but excessive inlet temps can cause issues with peak flame temps.
with 2.4, how hard you push it depends a lot on if its original head, running stock cam and how worn the old thing is. the 2.8 head and 2.8 cam is a lot better.
incidentally Will, did you get to play with the pre cups? as that starts getting important at higher fueling.
you really need an IC for 15psi and above. thats why a lot keep the boost down to 10-12psi. engine survival is more about fueling than just boost, but excessive inlet temps can cause issues with peak flame temps.
with 2.4, how hard you push it depends a lot on if its original head, running stock cam and how worn the old thing is. the 2.8 head and 2.8 cam is a lot better.
incidentally Will, did you get to play with the pre cups? as that starts getting important at higher fueling.
Re: boost ln61
Posted: Thu Sep 22, 2011 8:53 am
Big Will wrote:I shouldn't add my 5c here but, run heaps!!
I was told more than 7psi on my 5L-t and it would die, so I initially ran 12, then just to prove everyone wrong I give it the occasional dose@ above 35psi, I have no Idea exactly how much cause it pins the gauge at abut 3500 rpm..
running heaps of boost wont hurt your engine although it may damage the turbo by over spooling it.
Personally i would keep it under 17psi and i would add an intercooler- once youv'e done the exhaust.
Hey tweake, ^^ just in case you didn't see that..
As for modifying the pre-combustion chambers.. nah I haven't had the engine apart. Im not sure if im going to chase more power but Im seriously considering it.
Re: boost ln61
Posted: Thu Sep 22, 2011 9:27 pm
hay guy it has a 2.5 inch exhaust by previous owner and can sort out a boost gauge so how do i wind it up and how do i wind the fuel up
Re: boost ln61
Posted: Thu Sep 22, 2011 9:43 pm
You can get a cheap manual boost controller (bleed valve type) for like $25 on TM put that on then adjust to suit. The fuel isnt too tricky either, I have a manual diesel pump on mine so im not sure if the electric ones are the same or not but anyway:
On the back of the fuel pump (passengers side, front of engine in case you dont know) there is a screw with a nut on it, it will most likely have a little plastic cap over it. Pop off the cap, loosen the nut and turn the screw (1/8th of a turn at a time) until desired amount of fuelling has been reached, tighten nut and enjoy
Im pretty sure the screw turns anti-clockwise to raise fuelling but cant remember off the top of my head, im sure someone will have the right details.
Caleb
On the back of the fuel pump (passengers side, front of engine in case you dont know) there is a screw with a nut on it, it will most likely have a little plastic cap over it. Pop off the cap, loosen the nut and turn the screw (1/8th of a turn at a time) until desired amount of fuelling has been reached, tighten nut and enjoy
Im pretty sure the screw turns anti-clockwise to raise fuelling but cant remember off the top of my head, im sure someone will have the right details.
Caleb
Re: boost ln61
Posted: Fri Sep 23, 2011 7:55 pm
clockwise for more fuel. .
that is if your looking at the back of the pump
that is if your looking at the back of the pump
Re: boost ln61
Posted: Fri Sep 23, 2011 9:12 pm
after putting on a 2 1/2'' exhaust and snorkel my boost raised from 6.5 pound to 9.5 it goes heaps better and feel its a safe level
Re: boost ln61
Posted: Thu Oct 06, 2011 9:17 pm
uwshho wrote:You can get a cheap manual boost controller (bleed valve type) for like $25 on TM put that on then adjust to suit. The fuel isnt too tricky either, I have a manual diesel pump on mine so im not sure if the electric ones are the same or not but anyway:
On the back of the fuel pump (passengers side, front of engine in case you dont know) there is a screw with a nut on it, it will most likely have a little plastic cap over it. Pop off the cap, loosen the nut and turn the screw (1/8th of a turn at a time) until desired amount of fuelling has been reached, tighten nut and enjoy
Im pretty sure the screw turns anti-clockwise to raise fuelling but cant remember off the top of my head, im sure someone will have the right details.
so where would i get a boost tap from for 25 bucks
Caleb