I have a HY35 turbo for my car and the guy says it has a internal wastegate, but that I cant use it cause it is set to high. So i was wondering will a different accuator work on it?

 

Yep...

 

Really or are you just being a smartass? lol. But seriously i can? cause that would save me about $300.

 

I was being serious... I think I already answered this question in a PM to you (but apparently you delete them before the info gets to y0 brainz).

And the dude who said the one on there was set too high, doesn't know much about turbos either. You can adjust the pressure settings several diff ways. I suggest doing some research on waste gates / actuators so you can understand how they work.

 

Well the dude acutally has a shop where he builds mostly z's but works on a lot of stuff. So I am going off what he says. Which is probably a mistake cause shops do need to make money. But he said that everyone who uses one like I am talking about doing ends up overboosting and messing up their ringlands. But the thing that throws me off is that if you have either a wastegate or a acutator set at 8 psi and you over boost wouldnt that be the wastegate or acuator itself?

 

Yes, sounds like you understand.
"set too high" would be where the actuator is set to open up at. You can change those out so I'm not sure why the internal wastegate itself was in question. (by the shop guy)

What psi is that turbo set to? It is for a Diesel truck, right?

 

Yea its for a diesel truck. And it does not have a acutator right now. Doesn't the acuator set the psi on the wastegate?

 

..... uh.... the actuator activates the wastegate once a certain psi is reached. its like a diaphram that wants to only see a certain peak psi. once that peak psi is met it starts to expand and in so moves the pushrod out with it which will open the wastegate to allow exhaust to start bypassing the turbine wheel, it only allows so much past so that it stays at that peak psi. you should read up on turbos. maximum boost is a great book. also, if i was going to use a turbo that big, i wouldn't mess with internal wastegates anymore and just go external at that point.

 

I dont consider my turbo big. And the reason i was considering using the internal one is so I can get it on the road sooner.

 

if its for a diesel truck, its probably big, not huge, but big, and pretty efficient, it was meant to reach full boost on a much larger displacement motor at 1.6k rpm and full boost might have been 40psi.

 

Then its noe big enough. I'm aiming for more like 60 psi.

Not really I am aiming for 12.

 

Indeed it is a pretty big turbo. I think BigPhil on Hybridz (and maybe veyenyl too?) is using the HY35.

 

yup yup! and im not saying it needs to be done, but if you ever start using it how it was meant to be used and up the boost closer to over 15 maybe 20 an external gate should be used. its just more or less preparing for the future. plus they sound BA with an open dump

 

Yea if i ever hit 20 I will do a backflip. lol.

 

pffft... 20psi is a cake walk. lol

 

Really now? Then how come not everyone has that?

 

With a completely new fuel system and the stock compression.

 

Well I am going to have bigger injectors, fuel rail, fuel pressure regulater, and a fuel pump. I really do wonder how many psi I will be able to get on my set up safely.

 

The "general" (and I use that word loosely) rule of thumb is that a motor should be able to sustain a 50% increase of hp on stock internals (safely). Do the math...

 

Screw that. Looks like I will be ripping apart my enigne and upgrading internals. I want 350 to the wheels.

 

350 to the wheel will probably be fine on stock internals, its headwork that will need to come proper gaskets and ARP studs all around.

 

Good to know.

 

but also, i think bigphil just did what i said and maybe a bottom end rebuild and nothing for headwork and used a stock NA zx 5spd for like 350whp or something along those lines i think, so really.... theres no good answer haha

 

Well dang. Oh well I messaged bigphil earlier when nismo first mentioned him and i watched his you tube videos.