Turbo wheel measuments

[andy2]

I found that the hy35 was too big for compounding and have went back to the hx30w.The hx30w is a tad too small to run without having a wastegate open but the wastegate will be set to keep it where I want it.I've saw 1 cummins 5.9 compound setup that used a wastegate on both trubos (They are on a ford with cummins conversion in the latest issue of Diesel Power magazine :wink: )I'm done playing around with turbos and believe I've got it sized as good as I can get it without spending too much more time and money.

[Audi80]

Are you running HX30W as a single or in compound system?

[andy2]

Compound, with k24 hot side and k14 cold side.The T3 moves too much exhaust and the k14 not enough so the k24 worked well and worked better with the k14 cold side.

[Audi80]

Have you tried to run it single? I tought it is small enough :roll:

[andy2]

I have not ran the hx30 as a single It would be interesting to see how that would work though.I believe it would make a great single for the track or dyno but would be too laggy for street use or a daily driver.

[Mark(The Miser)UK]

But what we are not comparing apples to apples, the volume of air the hy35 moves at 22psi, is far greater then the volume of air the T3 moves at 24 or even 30psi. Hence the reason that it takes double or more the fueling.

I've heard that more than once and I don't get it.  I can understand that a smaller turbine might cause added restriction/inefficiency on the exhaust side of things but I don't see how a larger compressor pushing 22 psi is pushing more air into the cylinders than a smaller one pushing the same pressure.  The way I see it, what moves air into the cylinders is the pressure differential between outside the cylinder and inside it when the intake valve is open.  Granted, the flowing ability of the head from one to the other changes the amount and rate of flow, but given those parameters are the same, 22 psi is 22 psi.  As I said, a small turbo might restrict the exhaust side and reduce hp in that manner, but I don't see how a larger turbo pushing 22 psi is pushing more air than a smaller turbo pushing 22 psi.  In fact I am sure that one can calculate the exact amount of air molecules in a given volume if given it's temperature and it's pressure.

Andrew

[/size]
Good point Andrew  [as always] :lol: ... Hang on the ticker-tape is coming out of my head. ... What if the smaller turbo has to do more work on the gas to pressure up the inlet manifold. Would it not raise the temp more so that it was less gas taking up more room because it was hotter... Maybe... but then the smaller rotor does less work per blade but needs more slices of air; so maybe work done is very similar... Should I post this? What the hell... :roll:

[Benjamin]

@libbybapa:
offtopic but i just need to ask
how the hell can you make a good quote instead when i or Mark(The Miser)UK do it by example

Greetz, Benjamin

[Mark(The Miser)UK]

[quote="Benjamin

Code: [Select]

@libbybapa:
offtopic but i just need to ask
how the hell can you make a good quote instead when i or Mark(The Miser)UK do it by example

Greetz, Benjamin[/quote]
maybe this :?: I Use the 'code' button

[Audi80]

I have not ran the hx30 as a single It would be interesting to see how that would work though.I believe it would make a great single for the track or dyno but would be too laggy for street use or a daily driver.

I have a Schwitzer S2BG as a extra turbo, I´m going to try it with smaller T3 exhaust housing. It has little bigger wheels than HX30.  I know it won´t be a torque monster with that, but im not looking for that either. If it´s not working the way I like, I´ll change back to GT23V.

[Benjamin]

@libbybapa:
offtopic but i just need to ask
how the hell can you make a good quote instead when i or Mark(The Miser)UK do it by example

Greetz, Benjamin

When you are replying to a post you will see a series of check boxes under the reply window.  Check the one that says "Disable HTML in this post".  Alternatively you can go into your profile and set that to be a default for every post you do, then you don't have to remember to do it in individual posts.  IMO It would be great if the initial profile setup had that as a default setting for anyone setting up an account and then if someone knew how to use HTML they would also know how to un-check that box, but alas it is not so...

Andrew

thanks a lot.
i'm pretty shure the admin's will find this setting and set it as default.

ok, back to turbo's now  

Greetz, Benjamin