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I am not worried about engine longevity, my engine only has about 50,000km on it since haveing a new head, bearings and alfin pistions fitted and is going well. EGT's are under control and I have good oil pressure.
gbentink Turbo Upgrade Users Thread
- Thread starter Mountain Goat
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I am not worried about engine longevity, my engine only has about 50,000km on it since haveing a new head, bearings and alfin pistions fitted and is going well. EGT's are under control and I have good oil pressure.
I'm interested also in peoples experience with fuel economy and more/less boost at cruise.
I've recently gone from a tiny T25 to a larger T2560 which produces less boost at cruise and my fuel consumption has increased. It could be due to me booting it too often, I'll need some long open road runs to really know.
"Eventually" when I play with vnt's again, I will measure injector duty cycle on my 1HD-FTE (MAP with dummy load) and will drive along and increase/decrease boost - may even do it on a dyno. If done on the road, it may take a while to show up differences.
I really need to data log rpm, injector duty, AFR, IMP and EMP. whew! Then dump into excel and graph/analyse.
Optimum AFR (or call it boost) is dependent on load and rpm and the engine design. Load meaning Brake Mean Effective Pressure (BMEP) which is a measure of torque per displacement (kind of). In engines there are so many variables and losses, almost all of them are non linear in function when compared to load or rpm.
I guess what I am saying is, each vehicle setup will behave a little (or alot) differently.
I just wish when pushing in 90cc/1000 on a TD42 with the VNT, we had installed the wideband :-( Clearly, boost (and AFR) +/- around the optimum boost for peak efficiency significantly affected power. BUT, lowering boost from this point had a more profound effect at reducing power than did increasing boost.
Dougal, do you know of cheap data logging software? Cheers
I've never tried these ones myself, but take a look at what $US30 gets you:
DI-145 Data Acquisition Starter Kit
Tapage
Club 4X4 Panamá
which video .. got a link .?
The other site is down, I'll link it up later.
G turbo on an Isuzu 4BD1 (originally non turbo) in landrover 110.
Idle & Rev
samiphone006-2.mp4 video by def_90 - Photobucket
Drive
http://s325.photobucket.com/albums/k398/def_90/?action=view¤t=samiphone005-3.mp4
Idle & Rev
samiphone006-2.mp4 video by def_90 - Photobucket
Drive
http://s325.photobucket.com/albums/k398/def_90/?action=view¤t=samiphone005-3.mp4
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, very very interestingGraeme can. This is the noisey spec: the GT26 - "Grunter". It will hold 20psi to redline on this engine no problem - 3000rpm.
Syche, you have the quiet spec and higher peak flow than this one.
Tapage, your getting same as Syche
I wasnt aware that it was running yet. Well done on Sam for doing a massive install!!
Syche, you have the quiet spec and higher peak flow than this one.
Tapage, your getting same as Syche
I wasnt aware that it was running yet. Well done on Sam for doing a massive install!!
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*EDIT* - I Bought an Innovate LM-2 3837 Kit instead because I needed a wideband anyway and the kit comes with a 32 channel data logging.... hopefully doesnt just log OBD2 or I'll be a bit stuffed....
I will buy the DI-149 when it comes out in a week - perfect!!
I will buy the DI-149 when it comes out in a week - perfect!!
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Tapage
Club 4X4 Panamá
just for the record .. I'm not worried at all about the sound .. to me, performance over sound !
Well fellas, I'll be posting here soon with my own results, just ordered one of these from Graeme this week and hope to have installed by the end of the month. I've got a turbo'd 1HZ with a boost compensator currently running about 8psi with no intercooler. Current boost threshold with the "modified" 1HDT CT26 I've got now is about 1500rpm after tweaking the boost compensator. I've been happy with the overall power but I'm hoping for a little better response with Graeme's unit. EGTs currently peak at about 1000F pre-turbo on long grades.
I'll post PSI/RPM and EGT numbers after I swap turbos with the existing settings, and then again after a tune. My ultimate goal is to maintain reliability and efficiency so I plan to keep boost between 8-12psi.
Can't wait!
I'll post PSI/RPM and EGT numbers after I swap turbos with the existing settings, and then again after a tune. My ultimate goal is to maintain reliability and efficiency so I plan to keep boost between 8-12psi.
Can't wait!
rideglobally
Nullacruiser
now pulling a trailer
now the 7000 pound Nulla is pulling a trailer. we picked up our new toy in Lebanon, Oregon. the performance of Nulla was great. 40 MPH climbing to over 4000 feet elevation on I 5, 3rd gear, 900F EGT. Pulling the trailer was almost effortless.
i have not turn up the fuel screw and my inter cooler is removed. i will be putting back my intercooler when i get home and turning up the fuel.
now the 7000 pound Nulla is pulling a trailer. we picked up our new toy in Lebanon, Oregon. the performance of Nulla was great. 40 MPH climbing to over 4000 feet elevation on I 5, 3rd gear, 900F EGT. Pulling the trailer was almost effortless.
i have not turn up the fuel screw and my inter cooler is removed. i will be putting back my intercooler when i get home and turning up the fuel.
Rideglobally - with intercooler, turned out fuel screw and 18psi or so, you might be able to do the same run in 5th... certainly 4th, and use less fuel doing it.
Thought I might post that on monday, a 1HDT here in Perth will be performance dyno tuned at United Fuel Injection in Redcliff. These guys do some of the really tough TD42's you read about; I do a fair bit with them and a good friend of mine happens to be the Performance manager there. Anyway, this 1HDT happens to have the GTurbo CT26 "Bad Boy" version of the turbo installed. Really this version is meant for the better flowing 1HD-FT however since he will be customising the intake manifold for more even flow, I relented and installed an even larger compressor wheel.No before and after unfortunately, all I know is that with big front mount, 3" zorst and 17psi maxed out stock turbo and heaps of fuel it went hard with heaps of smoke. Now the owner has dialed in 24psi and that cleaned up the smoke and he says it has "so much more power" (his words...) and hasnt touched the tune.
Adam B are you watching? This will be interesting as its the same mods as per your engine, except manual box.
Graeme , keep us posted on this one sound's good .
Dave.
Dave.
Always watching!
I've been busy with other stuff and haven't done anything to the truck lately. The truck just drives so nice I haven't needed to do anything. I have, however, been collecting a few parts but won't have free days to install for at least a month...
Bigger IC barrel
Bigger IC heat exchanger
Walbro pusher pump
Fitting the IC parts is going to be a hassle but it'll all work out eventually. What I still really need is someone's old valve cover so I can modify the raised part at the back in order to fit the huge IC barrel.
1HDT, eBay front intercooler, 3" exhaust. held flat out at 3000rpm contant on dyno for 10 seconds on 35" Tyres. Nice photo of whats going on. This is the GTurbo CT26 "Bad Boy" turbo...... AFRS to be posted too as soon as I have them.
Power is at wheels (201hp @ wheels)
Pyro is Pre Turbo in degress C.
Power is at wheels (201hp @ wheels)
Pyro is Pre Turbo in degress C.
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GTurbo CT26 1HDT 201whp, 18.7:1 AFR
EDIT: @ 201whp, 3000rpm (35" Tyres), the AFR was actually 19.2:1
Boost curve included.
NOTE: this is on an inertia dyno, so bottom end boost response is significantly better than on the graph. And the AFRS show up richer than they really are down low due to transient nature of the dyno. It is very rich off the bottom however, this will be tuned out as much as possible in the coming week. I think we can get it to 16:1. I wasnt there for this unfortunately.
Red line is air fuel ratio, blue is boost in Bar. Even in transient, the boost is 1.45 Bar (21psi) by 1700rpm and 15psi by 1500rpm.
EDIT: @ 201whp, 3000rpm (35" Tyres), the AFR was actually 19.2:1
Boost curve included.
NOTE: this is on an inertia dyno, so bottom end boost response is significantly better than on the graph. And the AFRS show up richer than they really are down low due to transient nature of the dyno. It is very rich off the bottom however, this will be tuned out as much as possible in the coming week. I think we can get it to 16:1. I wasnt there for this unfortunately.
Red line is air fuel ratio, blue is boost in Bar. Even in transient, the boost is 1.45 Bar (21psi) by 1700rpm and 15psi by 1500rpm.
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