redzcstandardhatch

i can pick up a holset h1a for a decent price.....brand new/in box.

i havent seen one of these turbos in person, and i cant find a whole lot on here or anywhere else i frequent about the h1a. it seeems smaller than the hx35, which is a good thing for my application (d16a6, vitara pistons, eagle rods, ported head)

i read the h1c is the "little brother" of the hx35. thats as close as i got. anybody know about the h1a? thanks! -adam

redzcstandardhatch

guess nobody has heard of it.

it might be a h1c..but thats not what the guy says.

drumking15

itll be to big for your app...youd be better off w/ a hx30...or a hy35 w/ a 9cm housing...although its goona take a bit to spool it

redzcstandardhatch

thanks for the reply...

if i can score it for less than 200, i'm gonna get it......and we'll see how it looks in person, but otherwise, i'm going to pass.

CoreyR

i think the H1C came in the pre 94 or 95 turbo diesel dodges (in the square body style ones). i read that somewhere.

mike1114

iTrader: (1)

SEARCH for "holset", there are several threads on here, including a 11 page one that I have been following all about holset turbos

redzcstandardhatch

i've read the whole thread, and basically every other one. there isnt anything about this particular turbo though.

RACINTWEEK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drumking15 &raquo;</TD></TR><TR><TD CLASS="quote">itll be to big for your app...youd be better off w/ a hx30...or a hy35 w/ a 9cm housing...although its goona take a bit to spool it</TD></TR></TABLE>

the compressor is between a 30 and 35. the turbine is the problem. most are 12 or 14cm and there is very few h1c's with smaller housings than that.


a properly built split mani will help spool tremdously, close to 500rpm

KeyserSoze

The regular h1c's had 18-21 cm^2 housings which will be wayyyy to big for you. The only one that might work is the Wh1c which has a 12 cm^2 housing. And this one will still be big for a d-series engine. I emailed you, check it out. I would go with the hx30 if I were u. GL.

redzcstandardhatch

thanks for the reply and email man..... i think i'm going to look for a hx30 , it seems that would be best.


any input as to what the best way to build the manifold for the split housing would be? what cylinders to pair together.

drumking15

youd wanna do a split scrool hosing if done properly...2&3 and 4&1 would be the pairings....but my hx35 spools really weel eq pressure w/ the standard 4-1 collector....

the hx30 w/ a small turbine housing would be your best bet...the reason why there isnt any info on the h1c...well because its a pre-decessor to the hx35...and is less effiecent...even the hx30 is gonna be a big turbo...but im assuming you wanna make some decent #'s.....also youll want to run it around 10psi or greater..holsets love hi-boost...and if your lookin for hx30's....a bunch of lull's (contruction fork lifts) have them.

redzcstandardhatch

i plan to run at least 15 psi.....

and i am going to do the split collector to take advantage of the twin scroll.

drumking15

hpe the block is built...15psi on a hx30 on a d...should get you at least to the 3XX's

redzcstandardhatch

yup. its in process right now though. going in within a month hopefully.