By surging do you mean compressor is chopping the air instead of compressing it?
Therefore making it not boost properly?
The 2H/12H-T/1HZ/1HD-T/1HD-FT Gturbo Alternative Tech Thread (1 Viewer)
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By surging do you mean compressor is chopping the air instead of compressing it?
Therefore making it not boost properly?
You need to know how to read a compressor map to understand but it's when you exceed the limits of the compresor. It's a damaging pressure wave that reverses back up the intake and impacts the compressor. It's to be more respected than overspeeding.
Yeah I have no idea how to read compressor maps, I guess my question is at what psi will the 20g become useless? 40psi or so?
I am aiming to start at 35psi and see how it goes, depending on dyno figures I may increase it a bit
I am aiming to start at 35psi and see how it goes, depending on dyno figures I may increase it a bit
I have had my td05 - 18g to 30 psi doing testing. It had more to go but that was my limit. Current set point 24psi .@gerg had asked about surge with my setup. With my extra intake open by the firewall I dont here anything. I am going to say no surge.
What size rear do you have on yours mate?
a
7cm housing Toyota #17020
Ahh sweet, so you will have a bit quicker spool than I will,
What pump and have you had it on the dyno? I am trying to get 200kw and trying to work out what fuel and supporting boost I am going to need.
What pump and have you had it on the dyno? I am trying to get 200kw and trying to work out what fuel and supporting boost I am going to need.
So I doubt regular thrust bearings will last at that kind of boost for long. Your asking a lot out if a fairly small frame turbo. The 20 g can really only do upper 20s boost anyway and it doesn't do that for much of a range. The hot side of the td05 is very usable with lots of cool stuff to mod it with but the cold side is disappointing. If your honestly looking for 40 psi you should do compounds. I think your motor will have a tragic end due to turbo failure if you try that with a single.
Its not just a cheapy ebay turbo, luke has built it and balanced it with 7+7 billet front wheel with extended tips, 360 thrust bearing 12 blade rear and high flowed so I am not worried about it blowing up he has assured me its safe for the turbo.
down the track I may upgrade to a 25g and 4 inch cover monster.
360 bearings are a given these days my friend. I'm talking thrust collar and thrust bearing surface area. If you can overcome physics I say go for it. If you do what your saying you should moly coat your bearings, run calcium, zink and moly additives as well as run a heavy synthetic oil. Simply put I think the bearings are too small for it to last for any signifigant length of time. Up it to a 25g and it only becomes worse.
Instead of focusing on upping your boost and stressing your turbo out to get performance, why not switch to really effecient Intercooling, porting your head, intake manifold improvements, smooth flowing large diameter exhaust, effecient down pipe. The easier you can get air in and out of your engine the more power you get. Well with the fuel of course.
I have 2.5inch cooler piping, I have a three inch exhaust and 4 inch dump pipe. I have all the supporting mods except maybe the intake manifold.
When I get it running I am going to give it to the engine builder/ tuner and he can tune it to what he thinks a safe limit is.
When I get it running I am going to give it to the engine builder/ tuner and he can tune it to what he thinks a safe limit is.
ahh k.well I hope it all works out for ya.
Cheers
G
Cheers
G
Thanks for all the advice, car should be running next week and I will let you guys know how I go.
Oh I do understand that... and I don't doubt that a GTurbo is absolutely worth the $2k... but if I can get something decent for $400 like the Kinugawa I mentioned above...
Cheers. I have read you thread before, but will have a better look through.
Any suggestions on where I could hunt for a stock CT20B? eBay/Gumtree are coming up empty, Outers is dead and LCOOL appear to have suspended registrations.
mudgudgeon
Resident galah
Hah, Outers died long ago!
Another mud member picked one up rerecently via the Facebook hdt tuning page.
There's got to be quite a few 1HD-FTE turbos collecting dust after upgrades have been done.
OK cheers, I'll have a look. Don't do FB much, and have found it annoying to filter through all the muppets. Enthusiast forums are much better resources, but they often seem to fade out.
I wondered about upgrade left-overs, but figured most would go to core exchange and get rebuilt and resold?
Hey guys just and update on the build, finally getting closer. Hopefully running this weekend. Thanks for all the help so far
mudgudgeon
Resident galah
Holy snapping lobster back Batman!
Bags not doing all the welding for that lobster back!
Looks cool like that, won't look so pretty welded though.
The same could have been done with two mandrel bends, and three or four cuts/welds vs twelve.
Bags not doing all the welding for that lobster back!
Looks cool like that, won't look so pretty welded though.
The same could have been done with two mandrel bends, and three or four cuts/welds vs twelve.
That lobster back might look pretty there, but flow is not going to be good. You've got a massive step at the entrance between the V band clamp ID and the pipe. Looks like 3" would have been a far better size.
That step up in size is going to cause extra turbulence and drag.
That step up in size is going to cause extra turbulence and drag.
