Outer Limits 4x4 Board

Just wondering what brand modified injector pumps youz are using. the price they are going for and do u like the new power of the pump and what areas of the rev range it is best? thanks

Most modify the pump that comes one the car.

Cost is in excess of 1500 to 4500 depending on what you get done to it.

Power depending on motor setup could be upwards of 160rwkw+

There is a difference between the GQ and GU pumps as well. I just had the injector pump timing tuned to the work I had done to my GU engine which was a fair bit of work. Didn't have to mod the pump at all and ended up with 187Kw at the wheels.

One of the things I've heard of doing is to puta larger 12mm plunger in the pump. There were a couple of diesel places that offered these modded injector pumps as an exchange for around $2500. Best thing you can do is ask around some diesel speciallists and talk to them about your needs and wants to compare them with cost. Its hard for people to just tell you what you're after without going into detail about what you want from this and also what your budget is.

put a gu pump onto ur gq u wont need to mod it. unless ur chasing massive power

i ve got a custom turbo, denco pump moded compensater shaft. 23 psi. pulls like a school boy from 1900 to 3000 on full boost.payed around the $2500 mark for the pump. loven life cant get enough

GU BOOST wrote:i ve got a custom turbo, denco pump moded compensater shaft. 23 psi. pulls like a school boy from 1900 to 3000 on full boost.payed around the $2500 mark for the pump. loven life cant get enough

Thats what i want to hear i have an auto box aswell so that made a big differance as i dont get the lag down low.. is that price exchange??

i had mine built at the deisel mob behind mobil in nambour josh, went from standard pump to a very capable pump. for 2400 with new injectors. ask andrew holford to hit em up for you. oh and has he given you back the lowmnt airbox yet? we ended up goin diferent route with his airbox.

money_killer wrote:put a gu pump onto ur gq u wont need to mod it. unless ur chasing massive power

I had a Garret GT42/35 top mount turbo running 20psi boost with a lot of head work done as well and ended up with 187kw and 1600nm torque at the wheels and all we did to the pump was wind up the fuel a little. Didn't have to mod it at all. GU pump is very good.

GT42/35??? You sure about that?

yeah GT42/35 is something yo would run on a 16 litre truck engine or a drag car

Never even heard of a 42/35, a GT42 is twice the size of a GT35 so I doubt there would be any hybrids combining both.

Care to show a dyno graph of 187kw and 1600nm, I say its not possible.




Andy

Dzltec wrote:Care to show a dyno graph of 187kw and 1600nm, I say its not possible.




Andy

I'll try to dig up the dyno sheet and scan it. This was 3 years ago. 187kw isn't such a big figure any more.

Yes it was a Garret GT42/35 hybrid that was hand built by Bob Hawkins up in Townsville. The head and intake/exhaust manifolds were match ported. A high mount turbo manifold from nissan used and larger valves used as well as a custom grind cam. Bottom end was left as standard but balanced and rebuilt. Flywheel was also lightened and balanced. Running all 3inch plumbing from the snorkle to the exhaust.

not possible sorry.....................................................................

toughnut wrote:

Dzltec wrote:Care to show a dyno graph of 187kw and 1600nm, I say its not possible.




Andy

I'll try to dig up the dyno sheet and scan it. This was 3 years ago. 187kw isn't such a big figure any more.

Yes it was a Garret GT42/35 hybrid that was hand built by Bob Hawkins up in Townsville. The head and intake/exhaust manifolds were match ported. A high mount turbo manifold from nissan used and larger valves used as well as a custom grind cam. Bottom end was left as standard but balanced and rebuilt. Flywheel was also lightened and balanced. Running all 3inch plumbing from the snorkle to the exhaust.

giantracing wrote:not possible sorry.....................................................................

toughnut wrote:

Dzltec wrote:Care to show a dyno graph of 187kw and 1600nm, I say its not possible.




Andy

I'll try to dig up the dyno sheet and scan it. This was 3 years ago. 187kw isn't such a big figure any more.

Yes it was a Garret GT42/35 hybrid that was hand built by Bob Hawkins up in Townsville. The head and intake/exhaust manifolds were match ported. A high mount turbo manifold from nissan used and larger valves used as well as a custom grind cam. Bottom end was left as standard but balanced and rebuilt. Flywheel was also lightened and balanced. Running all 3inch plumbing from the snorkle to the exhaust.

Which part isn't possible? You saw my ute at XI before I sold it.

1600nm, was it done in 2nd gear. Its too much torque in 4th gear. Or was in measuring newtons of force, which is very different to measuring newton meters at the tyres?


Andy

Dzltec wrote:1600nm, was it done in 2nd gear. Its too much torque in 4th gear. Or was in measuring newtons of force, which is very different to measuring newton meters at the tyres?


Andy

Not too sure on that one. I'm pretty sure it was in 3rd (2wd) and as for the unit of measure for torque, I'll have to try and find the printout. I'll go and have a look for it now.

So what is normally possible out of a standard GU pump?

Jimbo wrote:So what is normally possible out of a standard GU pump?

140RwKw on 33's,go 35"s or muddys and expect 130RwKw with around 17 PSi of boost.

520NM of actual engine torque with a good intercooler.

As mentioned before 187RwKw and 1600Nm is from fairy land.

toughnut wrote:

Dzltec wrote:1600nm, was it done in 2nd gear. Its too much torque in 4th gear. Or was in measuring newtons of force, which is very different to measuring newton meters at the tyres?


Andy

Not too sure on that one. I'm pretty sure it was in 3rd (2wd) and as for the unit of measure for torque, I'll have to try and find the printout. I'll go and have a look for it now.

If it was done in third then your reading is grossly inaccurate.

4th gear is 1:1 drive, 3rd is not.

toughnut wrote:

money_killer wrote:put a gu pump onto ur gq u wont need to mod it. unless ur chasing massive power

I had a Garret GT42/35 top mount turbo running 20psi boost with a lot of head work done as well and ended up with 187kw and 1600nm torque at the wheels and all we did to the pump was wind up the fuel a little. Didn't have to mod it at all. GU pump is very good.

Yeah no offense, but its not quite possible...

Once i Modified my GU, and that was custom extractor manifold, custom design roller turbo, front mount cooler with aluminum pipes, 4" intake on turbo through a massive airbox and into a 4" snorkle... Max I could get out of my 04 model standard gu pump was 130rwkw, and that was on 2 separate dyno and that was running 24psi...

Simply had no fuel, the more i screwed in just increased the idle....

However once i put a new pump on 23psi was getting my 175 then once i had 28psi with even more fuel (a bit sooty) getting just near on 200rwkw...

he sounds sincere, even with the pump mods done it'll just be a laggy "Dyno Pony" with a 35/42 turbo.....gota be a crossed wire some where!

Yep x 2, ...TD42T needs lots cash and more or less 30 PSI to get the 200RWKW....then just wait to see what wears out first.

To answer your original question.
Modification levels is determined by what power you want, this determines size and type of head and rotor used as well as other pump internals. Some can be noisy in combustion noise because of the amount of fuel injected.

Basically a 10mm head and rotor will supply fuel to 100rwkw using 31" tyres, 11mm to 130rwkw, 12mm in stages from 140-170-200rwkw.

Everything needs to be done to compliment that power, turbo size, i/c, air inlet system, cooling system engine.

Don't assume a pump for 200kw will make it on a stock td42t engine.


Andy

Well you may be right. I may be remembering it incorrectly and I can't find the dyno sheet to give you proof. The turbo was at full boost by 2200revs though and one thing I didn't mention before was that I also ran an electric fuel pump just prior to the injector pump to provide pressure prior to the injector pump. We found this did make a modest difference to fuel delivery. So I have what I remember and you guys have your info as well. They don't agree with each other and without proof I can't show you guys for sure so I'll leave it at this. Sorry for the side track/hijack of the tread.

Steve

Dzltec wrote:To answer your original question.
Modification levels is determined by what power you want, this determines size and type of head and rotor used as well as other pump internals. Some can be noisy in combustion noise because of the amount of fuel injected.

Basically a 10mm head and rotor will supply fuel to 100rwkw using 31" tyres, 11mm to 130rwkw, 12mm in stages from 140-170-200rwkw.

Everything needs to be done to compliment that power, turbo size, i/c, air inlet system, cooling system engine.

Don't assume a pump for 200kw will make it on a stock td42t engine.


Andy

Well my setup just turned up today its a gt2835 cutom made lowmount.. 4 inch inlet, 3inch intercooler pipes, w/a intercooler square type not round wanting good power for towing and touring.. so a 12mm but its an auto so i cant do an exchange pump as they are differnt

You are right, it has different governor controls inside the pump. Nothing wrong with doing your own unit, just takes a little longer.

Auto trans patrols are awesome with extra power.




Andy