Water/methanol injection

[wrongway around]

35psi ha the HDT can't even handle 30psi. Let alone an Hz. Ya I dream a lot , but that's what no money does I guess. The wd40 potato gun thing was in reference to how much the slightest change in chamber design effects choke flow. Try making one it's a good learning curve with a great kids toy if done right. For real how's the intake mod?

 

[ForealBoreal]

35psi ha the HDT can't even handle 30psi. Let alone an Hz. Ya I dream a lot , but that's what no money does I guess. The wd40 potato gun thing was in reference to how much the slightest change in chamber design effects choke flow. Try making one it's a good learning curve with a great kids toy if done right. For real how's the intake mod?

Can't handle 35lbs? In what sense?

All the parts for my intercooler/plenum/12mm pump and other maintenance are on my bench. House renos are priority and are hogging my time. Stay tuned

 

[gerg]

Im all ears to hear why a 1hdt cant handle over 30psi. I was thinking of doing a diesel swap in my fzj80 and it was a candidate. HG? cranks? What breaks? Whats the biggest plungers its pump can handle? What ever my next motor is, its getting as much boost as is required for the fuel it can pump.

 

[wrongway around]

Greg ring lands , even the alfins, keep I'm mind mine pulls 6gr rpm too. is no issue for 30 psi easily tweeked with the pump apart at least for ateb ,I'm sure the guy who started the hz t how much boost thread knows, probably big boy too. I'm just the guy who owns the truck and used to build potatoes guns. Only injector mod was changeling breaking pressure. For real ,stay tuned ,good one . I thought when you started the intake mod thread and tracked me down,I thought you wanted the info so you could build one too,my bad sorry misread you. I got it now thanks.OH AND APPARANTLY ARB LOCKERS $377 and Arab fridge freezers $300 something on Whitney . I don't know see coastal cruiser site for the link, UNDER ACT FAST.

 

[gerg]

Yeah I too tracked you down to see what and how you built your truck. I would still like a diesel swap, but it really depends on price and availability and swap time. The 1hdt seems like a good candidate. I guess I'll keep looking.
Thanks
g

 

[Dougal]

Greg ring lands , even the alfins, keep I'm mind mine pulls 6gr rpm too. is no issue for 30 psi easily tweeked with the pump apart at least for ateb ,I'm sure the guy who started the hz t how much boost thread knows, probably big boy too. I'm just the guy who owns the truck and used to build potatoes guns. Only injector mod was changeling breaking pressure. For real ,stay tuned ,good one . I thought when you started the intake mod thread and tracked me down,I thought you wanted the info so you could build one too,my bad sorry misread you. I got it now thanks.OH AND APPARANTLY ARB LOCKERS $377 and Arab fridge freezers $300 something on Whitney . I don't know see coastal cruiser site for the link, UNDER ACT FAST.

Stretching ring-lands isn't just about boost. It's about peak cylinder pressure.
Are you running methanol, lpg, petrol fumigation or seriously advanced timing?
Any of those things causes a huge increase in peak cylinder pressure which can do damage.

Boost by itself is quite benign. It's the combo of boost, fuel and timing that can create concern.

 

[wrongway around]

Did not know you could pull boost numbers in the 30s by itself. This is sounding like a safe simple cheap my kind of mod . Greg check repobc.com theres a locked lifted expo rigged 5spd diesel for $4900 not a bad start. Might act fast it should go quick.

 

[Tapage]

Only injector mod was changeling breaking pressure

what it's the intended purpose of this mod .?

 

[ForealBoreal]

what it's the intended purpose of this mod .?

Your pump with the fuel turned up is pumping more fuel.
Increasing the popping pressure makes sure with these increased flows that the fuel is still able to atomize better and the injector does not drip.
Better combustion = more power = more efficiency

 

[Dougal]

Your pump with the fuel turned up is pumping more fuel.
Increasing the popping pressure makes sure with these increased flows that the fuel is still able to atomize better and the injector does not drip.
Better combustion = more power = more efficiency

With increased flow comes increased pressure and better atomisation already. Injectors only drip if they have lost their seal.

Are there any results to backup this claimed increase in efficiency and power over a healthy engine at stock injection pressures?

 

[ForealBoreal]

With increased flow comes increased pressure and better atomisation already. Injectors only drip if they have lost their seal.

Are there any results to backup this claimed increase in efficiency and power over a healthy engine at stock injection pressures?

Thanks for the clarification.
As for efficiency and power, the big question is why bother increasing the pressures if just turning up the pump does that then?
I always thought say with common rail (don't hang me out to dry this is just the little I have read) with the increased injection pressures you need a higher pressure to better atomize with the increase in cylinder pressures

 

[Dougal]

Thanks for the clarification.
As for efficiency and power, the big question is why bother increasing the pressures if just turning up the pump does that then?
I always thought say with common rail (don't hang me out to dry this is just the little I have read) with the increased injection pressures you need a higher pressure to better atomize with the increase in cylinder pressures

With a mechanical fuel pump you're tied to injecting a certain volume of fluid in a certain degree of crank rotation. Only way around this is to fit bigger plungers to your pump.
But common-rail can step right outside that. They can keep increasing the pressure and squirting more fuel in the same number of crank degrees.

It's just another tuning option we don't have.
But interestingly, peak efficiency of mechanical injection and commonrail engines are the same. It's mainly the commonrail engines have a much wider operating range.

 

[gerg]

So I looked at that repo 80 you spoke of. Pretty rough truck. 1hz is seized, but has the h151 which is pretty neat. It's a parts truck IMHO.
g

 

[wrongway around]

That's me who said it was seized ,more like count on it being seized, could be a h150 (most likely) I don't know the difference. Dougal can't back anything up sorry but I do put lots of miles on my truck and drive it harder than most so drive ability is pretty good I'd say at least. Ateb has done a few of the gturbo tunes and installs and has compared both . I wouldn't underestimate the fuel delivery that these pumps and injectors can produce and consume, with good real world results . I do have mine turned down the last year though , once I get my tyranny fixed up to handle the power I'll go all balls out again for you to punch your numbers. Can't see this happening soon unless forced to due to tyranny failure. Oops gerg you looked at it and thought it was seized. But the starter was not engaging at all (the lights diddnt dim when cranking) how did you determine it was seized. The melting on the rad was from a high watt light resting on it I figured. Abandoned on the highway timing cover off might suggest no overheating?

 

[gerg]

Couldn't move the engine with a socket on the flywheel at all...not good. Yes cover is off. Too many people want to pay too much for it so I'll just keep an eye on it.
Thank
g

 

[sailor]

I looked at it too, was prepared to offer full ask,but it is pretty rough. Also can't take delivery till March so that is a double negative..

 

[ForealBoreal]

I looked at it too, was prepared to offer full ask,but it is pretty rough. Also can't take delivery till March so that is a double negative..

Its worth it for the lockers, 5 speed and 1hz core in my opinion.
It would be a sweet 80 to snag along with a cheap US 80 and combine the two.
Would you go the h151 over the nv4500 you were planning G?

 

[KiwiDingo]

Did some initial testing of my water injection over the weekend. Only switched on the manifold nozzles so far injecting 660cc/min of straight water and my pre-turbo EGT drop a massive 150 degreesC! Looking forward to testing the 50/50 water/meth mix and also the pre-turbo nozzle

 

[veiloctane]

Did some initial testing of my water injection over the weekend. Only switched on the manifold nozzles so far injecting 660cc/min of straight water and my pre-turbo EGT drop a massive 150 degreesC! Looking forward to testing the 50/50 water/meth mix and also the pre-turbo nozzle

any damage to the turbo blades with the nozzle pre-turbo?

 

[KiwiDingo]

any damage to the turbo blades with the nozzle pre-turbo?

None when done correctly. Unfortunately most aren't, and they get compressor tip erosion in a short space of time.