Here's the two turbines side by side. Yeah I've considered compounds, but it's a lot more time and effort to get it right. Want to see how far I can push a single stage setup first before I go down that road. Definitely enough room for it though
The 2H/12H-T/1HZ/1HD-T/1HD-FT Gturbo Alternative Tech Thread (8 Viewers)
- Thread starter ForealBoreal
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Thanks for the pic. Is it the same size? Looks slightly larger in the pic, or it might be me. Are the blades of the same design with the flat tips or are they the curvy more laminar design? That was the trouble I had was the flat tip blades give you a lot of backpressure at high flow. Ive thought about buying one of these trucks just to build a compound for it, but I need to finish the work on my plate as it is. If anyone had a smashed 1hdt head it would make it a lot easier than buying a whole truck. What size housing are you running? That's another annoying thing with Toyota is its hard to figure out what the heck size their housings are. Are you running stock ct26 thrust collar? Im not sure how long your bearing will last with 35lbs boost.
I'm not sure either. Looks like a similar blade design. Was supposed to tap the housing for back pressure purposes but forgot lol. If I pull it off again I will. Not sure on housing size, but it's an upgraded thrust bearing and core, safe to 40 psi
Cool. Without picking your brain apart too much....where did you get the upgraded bearing? Your builder or a kit? I know how much effort it takes to problem solve stuff so don't sweat it if he doesn't want you to spill the beans on it. Be nice for the average stock turbo guys on here to get a nice rebuild kit if possible.
Came from him, but I don't see why it wouldn't be possible to purchase it. I'm not sure where he got it from, but I'd assume they are fairly easy to come by
You say you get alot of backpressure with the flat tip style turbine are there any of the 9blade STS style of turbine that would fit your housing? I think that is the reason for the 9 blade in my Mamba unit which runs a smaller diameter wheel than stock CT26 52/68. Mamba(49.2/56mm). Smaller hole more back pressure offset with less blades to maintain topend flow. I am no expert just quoting the site. Supposedly faster spool because less weight too.
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The td05 turbines are not compatable with the ct26 as far as I know.
The exhaust housing must be a custum machined part from Mamba as it bolts to the stock manifold and exhaust flange. It appears to be running a TD05 CHRA and compressor housing too. Hybrid? Part # 17020 cast into flange of exhaust housing.
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mudgudgeon
Resident galah
correct. its a hybrid exhaust housing.
Yeah since the ct26 is larger there is little chance of machining a stock housing to a td05 turbine. Probably could get a ct26 to DSM adapter and use a td05 built for them.
I found a couple of pics of how my turbo looks. I wonder if Mamba buys raw CT26 exhaust housings and machines to suit. They could spec a custum casting with smaller hole and accomadate the TD05H wheel they are claiming to use.
Yeah they could probably request a custom housing given the volumes they do.
Even without being able to see the tips I can already see the exducer blades are past the center point and back swept which, as Dougal has identified, is an improvement over traditional designs. It creates mote torque and flows more gas. I can't say if it's better than an 11blade as yould have to test the, back to back.
What kind of boost and egts do you see WOT at like 1500rpm, 1800, 2000 ?
Even without being able to see the tips I can already see the exducer blades are past the center point and back swept which, as Dougal has identified, is an improvement over traditional designs. It creates mote torque and flows more gas. I can't say if it's better than an 11blade as yould have to test the, back to back.
What kind of boost and egts do you see WOT at like 1500rpm, 1800, 2000 ?
mudgudgeon
Resident galah
Mamba don't offer an 11 blade turbine wheel for this. Apparently there are no 11 blade TD05 turbines being made by any manufacturer.
so pulled off the intake on my 1HD-FTE turbo to check for play, looking to UFI and procharge for replacements!
serenity
SILVER Star
How much play does it have? You really need an egr block and a catch can before installing a new turbo (new turbo on not that engine really needs them), also take the time to dismantle and clean the intake from the egr valve onwards if you haven't already.
mudgudgeon
Resident galah
Ok kind of a newb question... how do guys get accurate egt temp readings when the transmission kicks down. If I get anywhere near full throttle my trans will kick down a gear or 2. I have Wholesale Automatics Extreme valve body , billet torque converter, and extra plates in all the forward clutches. Do you remove the kickdown cable? Is there a standard for getting these readings so we are all on the same page.
Aproximately
@ 1600 about 10 psi
@1800 about 16 psi
@2000 20psi crrent set point
Air temp -18C
Readings not at wide open because of kick down.
Cant force egt over 1050F under any cercumstance. Still havent fiddled with pump.
It will boost and revs so fast it is tough. I.ll try a vid and post it.
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I dunno. I've got a manual. Next truck is an auto so I'm cureous too. So -18c will help keep your egts low to say the least. Do you have an intercooler? Still pretty responsive considering you haven't changed the fuel.
Sorry forgot you are intercooled.
Sorry forgot you are intercooled.
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Is it a rub mark or is the buildup of depoisits that thick that the rotor has cut a path thru it? Measure the play and be sure that you are not at risk.
Just ordered my guage ebay for 190.00 CAN freight paid.
thx for the advise this seems like a great choice
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