Turbo question.
 

Hey guys, new to the forum. I have a question, I have a stock hx35 with the silencer ring off, and adjustable boost elbow that is set to around 38-40 psi. I bought the truck used, it has no fuel plate, star wheel cranked tight, pre-boost screw turned in, firepunk built auto, stock injectors for all I know. I got no information besides the transmission when I bought it, lovely dealers don't tell you anything. When driving it, the turbo spools up very very quickly, it will smoke through the whole rpm range and the egts will climb up to about 1400 then I let off cause I'm afraid of burning it up. So my question is, is there a more usable turbo than the stock one with as much fuel as I'm putting out? The truck is fast in 1st through 3rd then levels off and doesn't get much faster with boost gauge right at 40, and still a darker haze of smoke. Any help is very appreciated. Very happy to be on the forum. Thank you for the help.

Does it make more then 2800rpm? That's one curiosity, because you will defiantly want a governor spring regardless to get any more performance out of it. And as for turbos what are your goals. Are you building up to something, have a budget. Plan to stay small, plan to add a second turbo later etc. Usually a simple 62/65 s300 is a good choice or an he351/ custom he351 with a larger wheel.

Hello wpg6.5, thank you for the reply. At the moment I am waiting on a 4k gsk and valve springs, and as for turbo, I want a good street turbo, I don't plan to run two, I like single setups. I'll occasionally pull a goose neck slant 4 horse trailer with a small living quarters in the summer time and a car trailer for my friends, but other than that not too much hard work. Maybe pull a sled at our county fair once or twice a year. Was thinking about a hx40 from JM turbo, has a 1 year warranty or you can buy a extended warranty. They are 61/64/18cm, but I am hesitant after seeing so many people with problems.

And I want something that will bolt to my manifold and not be too much of a hastle to change.

Are you sure you have lockup? You should definitely keep pulling hard after 3rd gear, unless the converter isn't locking or it isn't shifting into OD. You aren't going to burn anything up at 1400° unless you maintain it for miles on end. As long as you're cruising under a grand (hopefully well under, unless you're towing) you're fine.

No matter what turbo you put on there, running the pump wide open like that you're still going to have to keep an eye on the pyro if you get in it and stay in it. As to towing, the GSK will allow you to turn off the OD and still run reasonably highway speeds in third, which keeps the turbo spooled to help keep it cool and doesn't bog it with fuel on hills (depending on your rear gearing- this works with 3.54s, but if you have 4.10's you're already there). Putting a plate in to profile out the wasted fuel will help with the heat also. Unless you have money to blow and really just want a bigger turbo, I'd try to make what you have more efficient before changing chargers.

Thanks JBearSVT. Positive I have lock up, I put it on a switch in the cab below my steering column. And it works. And the converter is locking up and overdrive works. Everything works as it should. It just feels like when you get to 65 or so it levels off and doesn't get much faster. But this could also be due to my 4.10 gearing too. And I don't mind not having a plate in there, I'd like to have a bigger turbo anyhow.

What rpm are you maxing out at? That's your max fueling. One of the reasons you may be flattening off. And as for a turbo a simple bd super b or killer b would suite you fine. Then are a 58/65 and a 62/65. The kit comes with everything to bolt them on including a down pipe. They are the best all around price aswell. If your keeping it stock other then that and Wanna shoot for up to 400ish hp those are good turbos. Aswell can be compounded later.

Don't buy that Hx40 you will not like it

5x12 or 5x.013 SAC and a 62mm Billet turbo would work great for 450-500HP. Get some 4k governor springs too.
https://cimg3.ibsrv.net/gimg/www.die...d5db25d8c6.jpg

:D

Hey guys. Sorry for not replying. Been busy with working 2 jobs. So I've been paying attention to the rpms and boost and egt numbers. It levels off at about 18-1900 and still speeds up but not as fast. I can blow the doors off some powerstroke we have here around us and I've gotten 1 duramax. From 35-60 I can tear it up. But once I get to 60-65 it starts to slow down. I have smoke still throughout the whole range. Not so dark you can't see through it but still obvious. Boost gauge is only a 35 psi gauge but by looking at the needle and judging, its at about 40 psi from 3rd gear up, so spooling it is not an issue at all. It spools faster than any boosted car I've ever had, and egts are anywhere from 1100-1500. I have plenty of power, torque, and speed down low, but I don't understand why it flattens off around 60-65.

GSK

You need a governor spring kit. Either a 3000rpm or 4000rpm one. That is why. There is no other reason. Also if you have goals for the truck you should state them. It's a stock 180 horse truck, it's not gonna be fast without modification. You NEED a gsk kit to make more rpm which will increase usable rpm and fueling rate. Psi also is not a real representation of power. You can only make so much power with an hx35 and it will start to get hot.

Agreed. My hybrid turbo makes 3psi less than my stock turbo was, but ridiculously more power. There's more to great chocolate milk than chocolate and milk.