blow thru New Member 13 Member For: 10y 10m 9d Posted 25/05/18 10:45 AM Share Posted 25/05/18 10:45 AM Hey guys I was wondering if anyone has used a t04z and how do they rate them on a 4 ltr? I have a proboost t04z with billet front wheel still wondering whether it's worth using on stock bottom end with 20 psi. I've heard they don't really shine till 30 psi. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,083 Member For: 10y 1d Gender: Male Location: South Australia Posted 25/05/18 11:25 AM Share Posted 25/05/18 11:25 AM It's just a reworked chinese turbo with a 800% markup. It'll be well in the efficiency range by 20psi on a 4 litre. If you try 20 psi let alone 30 psi expect to picking the pieces of turbine and compressor wheel from your car when the thrust bearing can't keep up. Link to comment Share on other sites More sharing options...
blow thru New Member 13 Member For: 10y 10m 9d Posted 25/05/18 08:26 PM Author Share Posted 25/05/18 08:26 PM Proboost have a good rep with there turbos there on a lot of big cars these days. Just would like to hear options how they perform. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,083 Member For: 10y 1d Gender: Male Location: South Australia Posted 25/05/18 09:00 PM Share Posted 25/05/18 09:00 PM (edited) Yes they do. That doesn't change the fact that running 20psi through a turbo that size, on a 4 litre, will be running it in or past peak efficiency and 30psi will kill it pretty quickly. With a billet wheel you'd expect that it'd be capable of around 800 to 900hp at the flywheel. Edited 25/05/18 09:01 PM by Puffwagon Link to comment Share on other sites More sharing options...
blow thru New Member 13 Member For: 10y 10m 9d Posted 25/05/18 11:46 PM Author Share Posted 25/05/18 11:46 PM Yeah ok fair enough. Do you think it's a worthwhile choice of turbo good enough for 500 rwhp. Will be behind 3 speed with a built convertor? Cheers 11 hours ago, Puffwagon said: It's just a reworked chinese turbo with a 800% markup. It'll be well in the efficiency range by 20psi on a 4 litre. If you try 20 psi let alone 30 psi expect to picking the pieces of turbine and compressor wheel from your car when the thrust bearing can't keep up. Proboost have a good rep with there turbos there on a lot of big cars these days. Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,083 Member For: 10y 1d Gender: Male Location: South Australia Posted 26/05/18 12:14 AM Share Posted 26/05/18 12:14 AM My issue isn't with proboost, it's with chinese turbos. Just because the compressor and turbine numbers can make power, doesn't mean the rest of the turbo will keep up or last for ages. Onto business though, I don't see why it wouldn't make 500 to the wheels even with the extra drivetrain loss. Depending on the setup you might prefer something with a slightly smaller turbine to get it happening a little earlier. Similar stuff has been done before on xr6s. Just search youtube for "t04z xr6". Link to comment Share on other sites More sharing options...
blow thru New Member 13 Member For: 10y 10m 9d Posted 26/05/18 03:01 AM Author Share Posted 26/05/18 03:01 AM (edited) Yes I agree and appreciate your input mate. I was originally after a gtx 3582 and grant from proboost steered me towards the t04z. I'm honestly little concerned about it hence the questions. Now until I'm certain it will be a good turbo without to much lag I don't want to fabricate dump pipe ect to change it down the track. Car will be around 3200lb 3 speed 3.08 rear with prob maybe 3500 convertor. Bf2 motor e85. Edited 26/05/18 03:02 AM by blow thru Add on Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,083 Member For: 10y 1d Gender: Male Location: South Australia Posted 26/05/18 03:46 AM Share Posted 26/05/18 03:46 AM With a large converter either turbo will wake up pretty quickly. I don't think you need to be worried about it being too laggy. Link to comment Share on other sites More sharing options...
blow thru New Member 13 Member For: 10y 10m 9d Posted 26/05/18 04:01 AM Author Share Posted 26/05/18 04:01 AM Thanks mate you've helped me a lot now. Cheers Link to comment Share on other sites More sharing options...
Puffwagon Trust me bro...tbh ;) 8===} Gold Donating Members 16,083 Member For: 10y 1d Gender: Male Location: South Australia Posted 26/05/18 04:12 AM Share Posted 26/05/18 04:12 AM No worries mate. I think that Grant was on the right track, based on your driveline. When you get it all sorted be sure to show us how you got on. 1 Link to comment Share on other sites More sharing options...
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