Holset HX35 build thread......

[gixxerbob]

i only ask because i picked up a sweet hx35, 7 blade, 14cm non-wastedated turbo for 300$ shipped. ebay is a wonderful place. im still going to rebuild it, posibly with a hx40 compressor housing and wheel if i can find them for a reasonable price, otherwise im just going to see what the hx35 puts at the wheels. i have to get the oil feed and drain line still

[V8slayr]

I have an Enthalpy ECU and he suggested doing the same thing w/ hardwiring the fuel pump. I'm glad to see that fixed your fuel pressure problem and will keep the car from leaning out. I am running a somewhat similar setup to yours and I'd like to get more info on the hardwiring process. I'd appreciate more info, or if there is a link to a step by step intstruction that would be awesome.

Your setup is the s***. Also definitely post up what happens w/ those DSM guys, I've got a few to handle myself when I get my car up. Hopefully I'll be back on the road in a couple of weeks

[kentuckyslider]

If it is the OEM housing it is 12cm2. I would suggest sticking with the compressor you have. It is good for 550-600whp at 37psi and the only thing going to a HX40 cold side will do is make it even more laggy. From my experience the only bad thing about the holset is they really like high boost and if your SR isn't built for 25-30psi you're not going to get the benefit of a VERY GOOD turbo. I am currently running mine at 20psi on the street on pump gas and it is very stout but very peaky with the 4.36 gear. Now that i have my fuel issue fixed I will be on the dyno in hte next week pushing it to 25+psi on 110 race gas and see what it gets. On DSM's these turbos consistantly break the 500whp mark around 30psi on a good setup and approach 600whp at a max boost of 37-38psi. That is the edge of there effeciency and where most diesel guys run the HX35 and HX40 all the time.

[gixxerbob]

i am pretty sure i have a 14cm housing, 14 is the only number that makes sense on the turbine housing, (gt britan,holset, sc2, 3536830, 14, 164, 02) there is no number on the inside of the twin scroll port like most holsets i have seenhttp://cgi.ebay.com/ebaymotors...rdc=1

what cams are you using, s4 or tomei? and how built is your head?

[kentuckyslider]

i am pretty sure i have a 14cm housing, 14 is the only number that makes sense on the turbine housing, (gt britan,holset, sc2, 3536830, 14, 164, 02) there is no number on the inside of the twin scroll port like most holsets i have seenhttp://cgi.ebay.com/ebaymotors...rdc=1

what cams are you using, s4 or tomei? and how built is your head?

This number is the holset part# and it's the same as mine. It's a 12cm2 housing. I have Tomie 260 procams with 12mm of lift, BC springs, new oem retainers, HLA's, and rockers for even wear with the new cams. I would say the 270's would be a better match for this turbo but I like the mid range.

[kentuckyslider]

i want to make 550 to the wheels with 25-30 psi

You better get a big a** turbo then. GT35R as a minimum, but if it was me I'd go with the BW S366!!!!

https://www.extremepsi.com/sto...age=1

This is the best price I've seen on this turbo and it will do 500whp at 20psi on pump gas on a 4g63. I'm looking at a 2002 S2000 for a DD and I will go with this turbo when I boost it down the road. The F20C makes 400+whp at 12psi with a GT30R on a stock motor, sorry SR20 but that's sick!!!!

[gixxerbob]

updates and dyno sheet please

[idahotuner]

i think i will stick with a gt35 ts. but do all sorts of things ot get boost sooner. i know i will have to run race gas to make over 500 to the wheels. so i might as well run the 35 at 30 psi and make 600 to the wheels and rev all the way to 9 grand.

[Logan76]

9k = weaksauze

[idahotuner]

dude holset turbos are skinny and tall. its wierd. my budy just put an hx40 on his 4g63 in a tallon.

[pauliedrft]

I love this thread .Just for the fact its something out of the norm .the t28 norm .

[kentuckyslider]

Here is a new dyno. 22psi on 110. should have pushed it to 25psi(what I'm currently running) but I did gain alot of TQ over my first pass. I miss the OEM intake's TQ. by the way my car is now for sale !! Building a house and a 2jz for my next S14!!!

[playero_loko]

thats a very nice powerband! very drag inclined... i hope i can do the same with my ts 76R

[idahotuner]

your selling it now. you know builds liek this arnt worth selling lol. you will regret it.

one thing i noticed about holset turbos is how lart the radius is on the compressors but its extremely narrow.

[Blown240sx]

Here is a new dyno. 22psi on 110. should have pushed it to 25psi(what I'm currently running) but I did gain alot of TQ over my first pass. I miss the OEM intake's TQ. by the way my car is now for sale !! Building a house and a 2jz for my next S14!!!

Looks like it needs more timing up top and less fuel almost all the way across the board.

[kentuckyslider]

Looks like it needs more timing up top and less fuel almost all the way across the board.

Yeah but I'm on a JWT rom tune with a safc piggy back. I've leaned it as much as I can in the mid range and it looks pretty safe to me but could be a little better. I might send the ecu back for a reflash with a data log.

[kentuckyslider]

OK here is the low down on my holset experience. It spools great in 3rd and 4th, about 300rpm slower then my GT2871R according to the dyno plot. It makes 400whp at 23-24psi with a cheap ebay log mani and a 2.5" DP and the stock cummins turbine housing. It is to hard to launch in first without a 2 step or a 35 shot to get it going but it pulls like a train in 3rd and 4th and traps 95-96 in the 1/8th. I could cut consistant 1.6-1.7 60' with the GT2871R but it was flat on the big end of the track and the HX35 setup is just the opposite. I can't launch it consistantly for s*** put it makes good power. For the Holset on the SR20 i would go with the HY35 for anything less than 450whp because it will spool much faster or I'd do the HX35/HX40 with a BEP .70 ar non divided turbine housing and solid lash adjusters and let it rev to 9500rpm.

I am selling my HX35 and buying a BW S256 .55ar from extremepsi and going for a happy medium between the 2871R and the HX35. I can't get the .55ar housing for the HX35 and I want more response and 20psi before 4000rpm. I'm getting 20psi in 4th at about 4400rpm with the HX35.

IMHO the HX35 and anything larger than a GT30R are more suited for the KA-T with more displacement or a SR with solid lifters that revs to 9K+rpm. The HY35 will make about 50 more whp than the GT2871R and spool just as fast with the 9cm2 housing. I sold my HX35 for $400(more than I have in it), and I'm buying this...... https://www.extremepsi.com/sto...age=1

It is just to good of a deal to pass up. It should spool about like the GT2871R and be capable of 25-28psi with the .55ar BEP housing. Here is the housing... http://www.timsturbos.com/SSTu....html

[Solow240sx]

Dont mean to thread jack or anything kentucky but would u be able to tell me what o-rings u used to seal the msd injectors into the greddy style intake manifold?? I got the top of the injector figured out, but at the manifold side all i have are the stock injector cushions..??

[spanishricer]

I don't mean to thread jack either, but just wanted to point out that I'm also an authorized Bullseye Power dealer.

And my prices are better than extremepsi.com's.

[Kalypso]

^ good to know

[idahotuner]

i kinda expected that you would want ot go smaller. my buddy is doing a hx40 on a 2.35liter 4g63 right now. he ont hit boost forever. plus he is AWD. my set up is going ot be alot more streetable with lower power. so should be an easy race from a dig and roll. cept for traction for me haha.

the BW265 is a good turbo. i have heard nothing but good things about it. extended tip tech with less leg but it can flow more then a gt2871r

[kentuckyslider]

Couldn't resist this deal... I went with the GT3076R........

zer...snail