gbentink Turbo Upgrade Users Thread

[TheBigBoy]

Where did you state that dyno was in 4wd? 21 psi is 21 psi. The difference between turbo's is only felt during spool up. Solong as 21psi at the given rpm is within the turbo's efficency range.

Be interesting to see what you get out of yours after all the work is done.

 

[58bernie]

That would have been unstated known and the 99% of people that read the post would of assumed it as well, it was stated that it was only 2wd as in the other post because it wasn't a standard original setup, that is why both where stated with tyre sizes.

Oh, I know it was stupid of me for not posting that it was a constant 4wd, how dreadful.

Still not APPLES for APPLES though, is it.

A ''turbo's efficiency range'', that may be the variable between 2 differently designed internals in that comment , but hey I'm not the turbo expert, I leave that up Graeme.

The guys at Diesel Central that tuned Julan's, think I should pull a number a bit over the 200whp mark.

And if Graeme comments that Diesel Central are one off the best tuners on the east coast, who am I the argue.

 

[TheBigBoy]

Can't wait...

 

[58bernie]

Can't wait...

Me either

 

[Tapage]

Has anyone put a Gturbo on an 80 series 1HDT engine with 3" exhaust and Safari air to air intercooler?

no Safari ATA but yeap a top mounted ATA .. I would like to think it does the job pretty good . see in my sign Marilu thread more details if you are interested ..

 

[58bernie]

Graeme set the actuator to 14psi. The controller has a 30psi solinoid. So it's perfect. Because you tow alot, you can just tune in higher afr's at 14psi and leave it. When controller is on and set to 30psi. It flies through the 14psi section so fast, you don't notice the leaner afr's/power. It's really a win win. Just means more options.

This is my 1.

I went back to this as I was unsure about why you went this way.

[/QUOTE]It flies through the 14psi section so fast,you don't notice the leaner afr's/power[/QUOTE]

I think there will be an issue trying to set a pump up this way. I want to tune to what can be achieved safely and leave it set. Eg. If I wanted a 30 or 35 psi, tune to that and leave it.
You only use the boost relative to your load.
If I drive easy, I won't see that 30-35 psi boost. It's only there when requiring the hp.
Because I will have more hp than ever needed most days, it will get to speed then the boost and hp drop as needed to maintain the speed required same as it does now around the 12-14psi +/- on the flat.

I think when required at 30-35 psi I would feel a flat spot or a step between 14 psi and 30-35psi as there will be a delay between the sensing of the end of the 14psi and the 2nd stage movement opening.

If you had a 1HD-FTE I believe you can do it with the boost sensor and unichip as Graham does.

For my liking, correctly tune either for 14 or 30-35psi or whatever the max psi is going to be, that's what think anyway.

 

[TheBigBoy]

So what exactly are you asking?

I think if you want to discuss this further. You should just email me. And leave this thread about Gturbo's.

 

[wrongway around]

At 35 psi boost with wta inter cooler can this be done. Sorry g . So your running a bigger exhaust scroll now . Can it be swapped onto any of your turbos as an upgrade per say.

 

[58bernie]

Graeme just built me a BB2 that is good for 35psi, he posted it during last week gone but hasn't turned up yet.

I have a W2A intercooler being built to replace the Safari A2A, more so for air flow and lack of room to enlarge the FMIC and increased piping size under the hood.

 

[jamohamo]

no Safari ATA but yeap a top mounted ATA .. I would like to think it does the job pretty good . see in my sign Marilu thread more details if you are interested ..

What sort of boost do you run and what torque do you get out of it? I'm after 700nm + myself, 720nm if possible.

 

[Tapage]

What sort of boost do you run and what torque do you get out of it? I'm after 700nm + myself, 720nm if possible.

24 PSI max if I'm pumping alcohol .. around 20 - 22 PSI if not .. and I have no idea ( not intention to erase my own power gain idea ) how much torque I got from ..

 

[jamohamo]

A transformation is occurring for my little 1HDT

Thanks for all your input guys over the last couple of weeks.

I have taken the plunge. My 1992 1HDT 80 series is booked in for the following mods:
- 4.5 ltr air filter lid for increased air flow
- 3" exhaust
- boost, EGT and intercooler temp gauges
- Bad Boy stage 1 turbo
- modified inlet manifold (front entry)
- custom A2A intercooler (600x300x90 I think)

I hope it can make over 700nm and will post results when done.

The aim was to make it brilliant in loose sand and effortlessly tow a heavy van up hills on the highway.

 

[ledgend80]

so where are you getting all the work done

 

[FJRanger]

Thanks for all your input guys over the last couple of weeks.

I have taken the plunge. My 1992 1HDT 80 series is booked in for the following mods:
- 4.5 ltr air filter lid for increased air flow
- 3" exhaust
- boost, EGT and intercooler temp gauges
- Bad Boy stage 1 turbo
- modified inlet manifold (front entry)
- custom A2A intercooler (600x300x90 I think)

I hope it can make over 700nm and will post results when done.

The aim was to make it brilliant in loose sand and effortlessly tow a heavy van up hills on the highway.

Please tell us more about this 4.5 ltr air filter lid for increased air flow?

 

[ledgend80]

I am interested in this as well. I pick a 4.5 air box up in a couple of days so I can compare difference then. I got it to just modify the inlet to 4" to match my snorkel

 

[jamohamo]

At Diesel-Tec in Lilydale. I'm only 20 minutes away by car and I can even get there by train which is very important when it comes to picking the old girl up.

Graeme recommended the air box modification to make sure I can get the desired results. He said "fit the airbox lid from a Petrol 4.5 multivalve - they are heaps better and if you want 700nm, you will need it. 26psi, 18:1 AFR. Need to drop fuel 12% at 2600rpm compared to 2000rpm."

I can't wait to post the results. Even more I can't wait to drive the thing!

 

[Branko80]

Maybe, I could prove this point by tuning my stock 1hdt before fitting my shiny new Grunter?

 

[Branko80]

Interested in thoughts from experienced grunted owners.

Arrived home from Christmas with first of Graemes latest 2013 spec Grunter Turbos in my luggage.

Fitted basic 3" mandrel and (scotts Rods) dump last week with new (post) Egt, boost, trans temp gauges up and running swapped in a fresh OEM air filter so now what next?

Plan is to add front a2a inter cooler, nomad or extreme vb, and tune fuel aneroid etc. All without any nearby dyno, trans shop or specialist services... Which is where GB's advice and the rest of you will hopefully come in pretty handy.(essential)

For baseline data here's the start point:
1 owner 1992 GXL 80 1HDT auto 200,000km
TC & injectors, replaced at 175,000k before taking the vehicle away from Perth - runs perfect & starts first click every time.

Current measurements from new sensors with 3"
Egt's 350c at 10psi cruising at 100kph level ground ambient 40c
Max boost std 11psi indicated
Max Egt achieved so far 520c floored at 120kph till top gear drops in and temps ease back to 490c floored till 140kph. Then I slow down.

I'd like to add bits one by one to see changes and provide feedback to all, but my thoughts are adding the turbo AFTER I install the inter cooler will mean pulling half the IC off to get the turbo in and make extra work / expense so these will probably go in together or in reverse order.

Have purchased a nice Moroso catch can (Chevy version) which looks like it will fit well. And a bunch of electrical tidy up business being done unr bonnet at same time.

Suggestions on order of works, which VB to choose, tuning tips etc welcome.

Will post results as project progresses.

 

[gbentink]

Has it had the diff gearing changed? I really can't be bothered myself. To correct the speedo I had a thing installed to the speedo cable to compensate. It is much slower to accelerate of course.

Hi; my experience has been that anyone who has installed a Gturbo, an intercooler (almost any type, but better is....better) and a 3" exhaust or bigger with tune has never wished they had shorter than stock gearing! Its a total waste of expense and fuel economy.

If your look at the dyno graph shown a few posts back (dyno was on 35" mud tyres), you will see torque at 1600rpm is enormous, and higher (by some 80%) than the peak you would usually get at 2000-2200rpm on a stocker or tuned stocker. If you multiply 2000/1600 times std diff of 4.11, thats basically what it would feel like (which is ~ 5:1 ratios!!). And... thats exactly what it does feel like, only with 50% more torque at wheels with 4.11:1 with Gturbo vs 5:1 on stock turbo setup

 

[syche]

Hi All.

I can't tell for 35" tires but and old G turbo at 1.3 bar with 3" exhaust and crosscounrty intercooler on 265 75r16. roughly 32" tires, that goes really really well

Did not had a chance to test it in african dunes with this turbo yet, but it will sure be monstruous as it was already dune unstopable. When i see the improvement the G Turbo made over teh factory one, it will be pure pleasure