the same basically, it wil just spool quicker, but at higher boost levels a housing that small is gonna drop off a bit in the power production department.

 

I believe 558whp in a DSM on 35psi is the current record with the Mitsu bullseye housing. T3 housing is *marginally* bigger, but not by much. Power production will only suffer with a smaller housing if the housing is excessively small (which it isn't) or the manifold design is crap (which it often is)

 

A couple of thoughts.....

1)We have the comp maps for these turbos right, but what efficiency is the island on the maps???? Is no one concerned with this? Don't we want to know how efficiently we are using these?

2)Anyone notice that the hx/hy manuals suggest max oil feed pressure of ~5psi? Just curious.

 

so use an oil restrictor? If IAT are OK then the turbo is ok. 50trim t04e looks miles better than 57trim t04e but the 57trim spools the same and is better everywhere, even though on paper its far less efficient.

 

so what oil pressure should you send them? 5psi?

 

ill tell you one thing mines prob gettin 60-70 and hasnt had any problems yet....

 

lets put it this way.. ive seen an hx35 comp. map, you can fit an entire t04b map inside the 75% island of the holset

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">lets put it this way.. ive seen an hx35 comp. map, you can fit an entire t04b map inside the 75% island of the holset </TD></TR></TABLE>
i doubt its possible but do you have a nice copy of this map...im sure its from one of your awesome connections...but i highly doubt he/she'd let it out into the open...ive seen the others posted...by morphius...im just lookin for more data...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KeyserSoze &raquo;</TD></TR><TR><TD CLASS="quote">
What eff % is that island akin to??

It looks like at a pr of 2 (15psi) which is what I will be running this thing flows up to ~52lb/min! ~43lb/min max @ pr = 1.68!
</TD></TR></TABLE>


The 'island' is the outermost edge of the map, with an efficiency of say 60%. I have the rest, but I won't be posting them. The 70% island covers around 1/3 to 1/2 of that map.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _Morphius_ &raquo;</TD></TR><TR><TD CLASS="quote">


The 'island' is the outermost edge of the map, with an efficiency of say 60%. I have the rest, but I won't be posting them. The 70% island covers around 1/3 to 1/2 of that map.</TD></TR></TABLE>

Well, I just got the hy35 map and I'm not sharing either!!! LOL, jk. Here it is.



It's all about sharing the wealth guys.
I have a couple of other pdf's that the holset engineer sent me let me know if anyone wants a copy.


Modified by KeyserSoze at 9:19 PM 9/22/2005

 

told you it was huge

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">told you it was huge </TD></TR></TABLE>
That's what she said.

 

till you cut on the light... "awww, how cute."

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">till you cut on the light... "awww, how cute." </TD></TR></TABLE>

Hey buddy, it may only b 3.5" but I know what to do with it!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drumking15 &raquo;</TD></TR><TR><TD CLASS="quote">ill tell you one thing mines prob gettin 60-70 and hasnt had any problems yet....</TD></TR></TABLE>


so does anybody else have any input?

 

For any curious, I emailed the engineer and asked for the same info for the hx35 and hx40. I'll post those up when I get them.

 

thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KeyserSoze &raquo;</TD></TR><TR><TD CLASS="quote">

Hey buddy, it may only b 3.5" but I know what to do with it! </TD></TR></TABLE>

I was reading from teh bottom up and thought you were talking about the turbine exit / dowpipe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Si Shane &raquo;</TD></TR><TR><TD CLASS="quote">

I was reading from teh bottom up and thought you were talking about the turbine exit / dowpipe </TD></TR></TABLE>

Well, it was in reference to a discharge hole, just one closer to my ***** than my turbine.

 

Damn that holset engineer, he is trying to have me list my setup so he can "suggest" a turbo for me. Any suggestions on what I should tell him? All I did was ask for the same info on the hx35 and hx40 that he gave me on the hy35.


Modified by KeyserSoze at 8:32 PM 9/23/2005

 

tell him exactly what you are going to use. a 1.8 liter motor revving to around 9krpm. 8? whatever. Its not like hes going to withold information because of some bias against four cylinders?

 

Ahh, I just told him the truth "I'm a diy type of guy and would like to figure stuff out on my own, I would like the maps so I can do so." That's the truth to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Si Shane &raquo;</TD></TR><TR><TD CLASS="quote">tell him exactly what you are going to use. a 1.8 liter motor revving to around 9krpm. 8? whatever. Its not like hes going to withold information because of some bias against four cylinders? </TD></TR></TABLE>
youd be surprised...in my org search efforts for info n the hx35 i was hit w/ many hung up phone calls soon as i said it was a 4bannger...

 

and i have been left w/out email response myself. But this is a holset engineer, an engineer not a punk bastard old dude working at a deisel shop, lol. just kidding

 

Good news guys I just got 3 different hx40 maps. The holset engineer said that the hx35 is just an more inefficient version of the hy35. Go figure. I will post the hx40 maps when I get a chance.