Talk to me about Holset Turbos...
 

So these turbos are pretty cool and seem to be fairly available at a price I like. I have a T3/T04B "S"-Trim right now that is just been rebuilt, but at 37lbs/min for a flow rating it's not exactly the hard hitting top end monster I think it would be as a .63/.60 flows 36lbs/min I'm still dabbling with kids toys. ;)


My set-up is the standard stock D-Series (Y8) on 10lbs and my preference is towards larger turbos because lag is fine with me because power is only a downshift away and in 1st we call that traction control. 8)


On eGay I've seen some pretty nice Holsets, but I have NO idea what code to look for from HY35 to HX35 to H1C to even an HX25......I'm kind of a n00b all over again.


I also may look into what another member did with a .63 housing (.48 depending on suggestions) and bore it out to fit the wheel. However, the center section looks held together V-Band style and don't know how that would work with traditional Garret/AiResearch bolt in housings. Oh and is the flange a T3 flange (manifold wise)? I thought it was, but not sure.




Basically guys, any and all knowledge about recommendations for a Holset application on my stock D-Series. Thanks fellas!


Oh and anyone want a freshly rebuilt T04b?




JP

Re: Talk to me about Holset Turbos...
 

h1c hx35 hy35

Re: Talk to me about Holset Turbos...
 

Biggest --> Smallest, right?


JP

Re: Talk to me about Holset Turbos...
 

h1c is circa 1987, slightly smaller, hx and hy are same size for the most part, any of them will make you 250whp

Re: Talk to me about Holset Turbos...
 

Any idea about the oil flanges and if my drain flange and oil feed fitting from my T3 will work?


JP

Re: Talk to me about Holset Turbos...
 

its all based on a t3 center section for the most part.

t3 flange, 1/8" npt oil in, t3 oil out.

Re: Talk to me about Holset Turbos...
 

how much for the to4b??

Re: Talk to me about Holset Turbos...
 

Most of them aren't 1/8NPT. You can make it work, but it's def. not NPT thread. I think it's JIC or metric.

Re: Talk to me about Holset Turbos...
 

i was told by the guy at a hydrolic shop they were "standard pipe thread"

Re: Talk to me about Holset Turbos...
 

if youre only gonna go for 10-12 psi or so youre prolly better off with a T04B/E than a holset, they seem to be absolutely GREAT for high boost (15psi +) but low boost their efficiency is good but not killer.

Re: Talk to me about Holset Turbos...
 

what are the specs on the T04?, i need something that will push about 350 on a 2.0.

Re: Talk to me about Holset Turbos...
 

Standard "S"-Trim turbo. It should do 350whp and on a 2.0 liter should get 10psi around 3.5k if I had to guess, but there are variables as you know. In my mind it may be running out of breath and if you plan on going further and further with the same turbo I'd say you MAY want something larger. Don't know for sure.


http://www.blaastperformance.com/index.php?p=t3t04bs


Identical to that.



PM'd.


JP

Re: Talk to me about Holset Turbos...
 

Why not swap out the compressor side to V trim or something like that? Be a lot easier than adapting to a Holset...

Re: Talk to me about Holset Turbos...
 

Did an NPT 1/8th fit in yours? And which model was it? I've got an HY35 and the 1/8NPT fitting I had didn't fit for ----. I've got a JIC fitting of some sort now which seems to work ok. I'd like to see how the OEM oil line is setup on the truck.

Re: Talk to me about Holset Turbos...
 

12x1.5mm inlet standard T3 drain and HY35 would be perfect for you O0

Re: Talk to me about Holset Turbos...
 

HY35 = 9cm tubine = .63 comparable?


The inlet is different? Ahh, where could I snatch that feed fitting? Looks like Dad needs to work some set screw restrictor magic again... ;)


JP

Re: Talk to me about Holset Turbos...
 

Josh, like I said on AIM, its not worth it. Why are you continually getting bigger turbos and leaving the engine stock, with no intentions of EVER building up the engine?

Re: Talk to me about Holset Turbos...
 

Dan, like everyone tells you.. Why are you giving people advice when you've never had any experience at all with auto mechanics... other than ------- up buddy's accords on occasion ;)

Re: Talk to me about Holset Turbos...
 

Powerband. NOTHING beats the late hit of a large flowing CFM turbo.

JP

Re: Talk to me about Holset Turbos...
 

hx35 is capable of 450 whp with ease

Re: Talk to me about Holset Turbos...
 

Do you not have a life? And why do you keep brining up my mechanical ability, look in the mirror for a second or so and think about that one :1 :1 :1 I don't post up everything I do in life with cars unlike others, sorry. Doc Boost needs to get to work on re-banning you...

Josh, powerband? You'll have no powerband with a bigger turbo on the stock engine. Just up the boost ::)

Re: Talk to me about Holset Turbos...
 

its actually smaller than that the 12cm is a .63 comparrison

the 9cm is like .48

Re: Talk to me about Holset Turbos...
 

have you read the holset bible on honda tech

Re: Talk to me about Holset Turbos...
 

No, do you have a link? I thought I had the right one from searching, but it started out talking about like B16 with a Holset and didn't read like a pure Holset information thread. I believe the title was "Holset owners unite!!" or something...is that it?



HX is the 12cm then, right?


Dan, trust me powerband is VERY noticable in different turbo set-ups. I like mine late and hard like the non-sense dyno queen Supras. Fun for highway and putting you in the seat just from a 2nd gear smash. :y Yea..... :D


EDIT: Congrats on the MMA win. ;) ;D


JP

Re: Talk to me about Holset Turbos...
 

'Cept the car next to you that just rocked you for 3-4 car lengths while you were spooling up....
That late hit of boost is a rush, but sometimes you'll end up with a faster ET with more area under the curve.

Re: Talk to me about Holset Turbos...
 

If you can hook it up, which most can't.

I'll be running an HY35 on a SOHC in the next week or so. I'll let you know how it goes.

Re: Talk to me about Holset Turbos...
 

well a hx35 will hit full boost 10 psi at 4.5k on a ls so do the math on how it will spool on a sohc probly around 5200ish just like my sc61 did

Re: Talk to me about Holset Turbos...
 

I'm really curious to see where this HY spools to be honest. I don't know what the smaller housing is gonna be like.

Re: Talk to me about Holset Turbos...
 

i would assume 4200ish on a sohc

Re: Talk to me about Holset Turbos...
 

My junk is so big and heavy that hooking it up isn't ever a problem.. Just lock the hubs.

:-)

Re: Talk to me about Holset Turbos...
 

do it if your a man

Re: Talk to me about Holset Turbos...
 

<EDIT>


I was going to say something witty, but the quote above is more than enough satisfaction for me. Have a nice day.

Re: Talk to me about Holset Turbos...
 

Totally agree. Sometimes it just isn't matched up right. I'm more about the late hit and highway fun than all out drag racing. However, you make a good point.



Question about the oil FEED....if I have the Stevemode standard (old style -4an if I recall, 2 years old so has to be -4an) which is 1/8 NPT how is that going to work with the 12 X 1.5 flare tip fitting I need?


JP

Re: Talk to me about Holset Turbos...
 

no

Re: Talk to me about Holset Turbos...
 

for the record, a t04b s trim does dwarf a 60/63 t3. the t3 doesnt flow 36 lbs, thats way off the map

http://www.rbracing-rsr.com/turbo/TurboMaps/t3-60.gif

heres the s trim, not a huge difference, but definitely flows a bit more

http://www.rbracing-rsr.com/turbo/TurboMaps/t04b-s3.gif

Re: Talk to me about Holset Turbos...
 

T04B = 37lbs/min

63/60 = 36lbs/min



Plans have changed, thanks for all the advice and help, but it looks as though I'll be getting another hybrid. Anyone care to suggest a trim and turbine size? I was thinking T3/T04E 57 trim with .48 housing. :y


JP

Re: Talk to me about Holset Turbos...
 

Samson, what vehicle are you driving?
You can read a turbo map, so outside of riding in something similiar, might see if you can find dyno runs of similiar setups...

I've *read* that one huge inducer of lag is the physical size of that turbine as it's a lot of rotational mass... You can cramp the AR on the hot side (go smaller) but if you've got a big turbine that has a lot of rotational mass that's going to really be the primary variable in how fast it spools on a given motor.
That's the theory anyway... I don't have enough experience to confirm for sure.

I can tell you that the 60 trim t3 spools up so much faster (.63/.60AR) than the 55AR T04b that I've got on there now.
Biggest difference in the turbos? Tubine size:

http://lakebox.dnsalias.com/photos/1...binevst04b.jpg

Re: Talk to me about Holset Turbos...
 

Wooooooooo, that's a big wheel, haha. :o D-series 10psi like the rest of HMT pretty much and I CAN'T read a compressor map, ha. I need to learn though if I want to maximize my ability to buy a suitable turbo that will make me cheese. :D

EJ8 :y


http://img165.imageshack.us/img165/8569/imgp1040ju8.jpg
Shot with PENTAX Optio S50 at 2007-07-25

I'm not too worried about lag and prefer it actually, but I definitly would like that hit on full boost. SC60-1 with a .48 housing perhaps? 60 trim T04E? I've never messed with knowing too much with trim sizes and all but thank God looks like I may have a choice this time around. :P



EDIT: So imageshack.us is a little different now I guess, and you all know when and with what camera that pic was taken with. Shoulda unchecked the "details" box... :l


JP

Re: Talk to me about Holset Turbos...
 

thats wrong and i just proved it to you. do you not know how to read a compressor map?

Re: Talk to me about Holset Turbos...
 

i feel slightly rude, but compared to most of you, i know i'm not. i only read the first half of the first page. i saw this, and its mostly right. there was a post above it that said that its too big, i concur. hy35 is a 500hp turbo. at low boost its not that good. its efficient between 15 and 25psi on 2 - 2.5l engines that can turn 7 - 8krpm. thats why i chose it for my 2l (7.5k). a td05h 16g is a big turbo for a 1.6 engine. that or something similar will get you 350hp or so max.

i'd be interested to hear what recommendations there are for turbos about half way between the hy35 and td05h 16g. it seems there is a void there if not in cheap turbos, then at least in my knowledge of whats out there.