Holset users unite!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by paul vang »</TD></TR><TR><TD CLASS="quote">If you guys need anything holset, let me know. I can hook you guys up with whole turbos down to separate wheels or flanges</TD></TR></TABLE>
really....i finally picked up a part time job again while in school so this winter i might consider some minor upgrades
really....i finally picked up a part time job again while in school so this winter i might consider some minor upgrades
Sup guys,
I wanted to join your oh so secret cult (
), so i picked up one of these bad boys. Holset H1E. Hopefully, it'll be going in my Vigor (2.5L for those who don't know). I have a complete engine that i'm going to be rebuilding before dropping this bad boy on. I won the bid last night and i'll be picking it up tonite. I'll take some pictures tonite after i pick it up. Has a couple of problems, but should be fine after i take care of them.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by paul vang »</TD></TR><TR><TD CLASS="quote">If you guys need anything holset, let me know. I can hook you guys up with whole turbos down to separate wheels or flanges</TD></TR></TABLE>
I will definately need to be talking to you. The seller stated that this turbo will need a compressor wheel and a rebuild kit. I'd much rather try and put some money in a fellow tuner's hands than hit the store. Also, he stated that he thinks the exhaust housing might be 19cm...and i believe that might be a little too big even for my motor. I'll probably look into maybe a 14cm or 16cm. What do you guys think?
Picking up this turbo has definately motivated me even more to hurry up and get my project finished/started....
I wanted to join your oh so secret cult (
), so i picked up one of these bad boys. Holset H1E. Hopefully, it'll be going in my Vigor (2.5L for those who don't know). I have a complete engine that i'm going to be rebuilding before dropping this bad boy on. I won the bid last night and i'll be picking it up tonite. I'll take some pictures tonite after i pick it up. Has a couple of problems, but should be fine after i take care of them.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by paul vang »</TD></TR><TR><TD CLASS="quote">If you guys need anything holset, let me know. I can hook you guys up with whole turbos down to separate wheels or flanges</TD></TR></TABLE>
I will definately need to be talking to you. The seller stated that this turbo will need a compressor wheel and a rebuild kit. I'd much rather try and put some money in a fellow tuner's hands than hit the store. Also, he stated that he thinks the exhaust housing might be 19cm...and i believe that might be a little too big even for my motor. I'll probably look into maybe a 14cm or 16cm. What do you guys think?
Picking up this turbo has definately motivated me even more to hurry up and get my project finished/started....
yea, i know...
by the time i'm ready to put this bad boy in, it'll be all taken care of.
is my assumption correct that the 19 stamped on the exhaust housing means that it is 19cm? if so, do you think that is too big for my 2.5L to spool?
by the time i'm ready to put this bad boy in, it'll be all taken care of.

is my assumption correct that the 19 stamped on the exhaust housing means that it is 19cm? if so, do you think that is too big for my 2.5L to spool?
Little update on my ****: Finished most everthing the other night. Started her up and she idled like a kitten. Small oil feed leak on the turbo and she idled a bit high (~900rpm), but everything looked good other than that. Will probably be gettin tuned by Bubba early next week. Lookin for 350whp on 91 and wanted 400whp on 100 octane LL avgas but was advised against it. So I guess 350whp will be good enough for now.
Setup:
GSR
Head:
crower valvetrain
crane stage II n/a cams
light pnp
adjustable gears
victor x
Block:
SRP pistons (have wisecos on my shelf when these fail)
eagle rods
arp studs
Turbo/Management:
Neukin mani
Holset hy35 (9cm^2 housing)
Aem ems
aem 3.5 bar map
walbro 255
rc 1000 cc injectors
tial wg and bov
4" to 3" dp, 3" exhuast
Hope to have some numbers and a dyno sheet for you guys sometime next week.
Edit for my shitty grammar.
Modified by KeyserSoze at 3:13 PM 10/4/2006
Setup:
GSR
Head:
crower valvetrain
crane stage II n/a cams
light pnp
adjustable gears
victor x
Block:
SRP pistons (have wisecos on my shelf when these fail)
eagle rods
arp studs
Turbo/Management:
Neukin mani
Holset hy35 (9cm^2 housing)
Aem ems
aem 3.5 bar map
walbro 255
rc 1000 cc injectors
tial wg and bov
4" to 3" dp, 3" exhuast
Hope to have some numbers and a dyno sheet for you guys sometime next week.
Edit for my shitty grammar.
Modified by KeyserSoze at 3:13 PM 10/4/2006
ok so heres the set up
Block
84.5mm ERK block
JE pistons
eagle rods
acl bearings
Head
JG full race p&p head
oversized valves
brass valve guides
springs and retainers
1000cc injectors
75mm TB
Custom intake mani
Im look to find a good turbo for this set up. can anyone give me suggestions. I was looking into HX35 HX40 or a HX35 Hx40 hybrid
Block
84.5mm ERK block
JE pistons
eagle rods
acl bearings
Head
JG full race p&p head
oversized valves
brass valve guides
springs and retainers
1000cc injectors
75mm TB
Custom intake mani
Im look to find a good turbo for this set up. can anyone give me suggestions. I was looking into HX35 HX40 or a HX35 Hx40 hybrid
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 3M TA3 »</TD></TR><TR><TD CLASS="quote">
Im look to find a good turbo for this set up. can anyone give me suggestions. I was looking into HX35 HX40 or a HX35 Hx40 hybrid </TD></TR></TABLE>
Don't go with the HX35/40 hybrid. IT is not worth it. The HX40 will spool the same. The reason alot of diesel guys go with the hybrid is that the HX35 has a stronger shaft. Also you are limited to the 58mm compressor wheel because anything bigger and it will run into surge really easy.
Im look to find a good turbo for this set up. can anyone give me suggestions. I was looking into HX35 HX40 or a HX35 Hx40 hybrid </TD></TR></TABLE>
Don't go with the HX35/40 hybrid. IT is not worth it. The HX40 will spool the same. The reason alot of diesel guys go with the hybrid is that the HX35 has a stronger shaft. Also you are limited to the 58mm compressor wheel because anything bigger and it will run into surge really easy.
I have a holset turbo setup... its not a honda though... I have a 78 RHD rx7 with a cosmo 13b in it with a tec 2 ems and a BIG *** holeset turbo... Just another project I never got finished... had it running a few times but never got everything worked out on it...


Ok, tuned. 315whp @ 11psi. Didn't go higher because the boost control in AEM was actin' up a bit. Will prolly be switchin to a mbc, which is sad because the boost control option is one of the reasons I got the AEM in the first place, but oh well. So, mbc is it and I'll prolly remove the cat as well, then I might get a baseline done. If anyone is the slightest bit interested, I'll post the dyno sheet.
+1 for the dyno sheet.
I know all set-ups are different and although we have different turbos, i'd like to see at what RPM you start makin power. I know someone else said that their HX35 started to make full boost around 4k w/ 3" open DP on a 1.8 and from what i've read, my H1E is about the size of the HX40, maybe a little bigger. I'm hopin to be able to make full boost around the same RPM or earlier w/ my turbo.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j-spec_cc2 »</TD></TR><TR><TD CLASS="quote">
is my assumption correct that the 19 stamped on the exhaust housing means that it is 19cm^2? if so, do you think that is too big for my 2.5L to spool?</TD></TR></TABLE>
I know all set-ups are different and although we have different turbos, i'd like to see at what RPM you start makin power. I know someone else said that their HX35 started to make full boost around 4k w/ 3" open DP on a 1.8 and from what i've read, my H1E is about the size of the HX40, maybe a little bigger. I'm hopin to be able to make full boost around the same RPM or earlier w/ my turbo.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j-spec_cc2 »</TD></TR><TR><TD CLASS="quote">
is my assumption correct that the 19 stamped on the exhaust housing means that it is 19cm^2? if so, do you think that is too big for my 2.5L to spool?</TD></TR></TABLE>
yeah i heard alot of good things about jdogg.
hey drumking i sent my hx40 with the bullseye turbine housing to get flow tested to prove how good the holset was and she started smoking on the second pull.
they took it a part and found a hair line fracture in the bearing assy. so i have to get another one. the turbo gods have not been nice to me with this project.
hey drumking i sent my hx40 with the bullseye turbine housing to get flow tested to prove how good the holset was and she started smoking on the second pull.
they took it a part and found a hair line fracture in the bearing assy. so i have to get another one. the turbo gods have not been nice to me with this project.
ya it was me who said i was gettin full boost at 4k+ w/ the 12cm housing hx35 ;-)
but ya i havent been all to maintenance friendly...my snail is in def need of a rebuild...2 yrs of abuse is startin to show some signs of wear...slight oil consumption issues along w/ a slighty seizing after no cool down periods...meh i got it for 200 bucks....i really cant complain
but ya i havent been all to maintenance friendly...my snail is in def need of a rebuild...2 yrs of abuse is startin to show some signs of wear...slight oil consumption issues along w/ a slighty seizing after no cool down periods...meh i got it for 200 bucks....i really cant complain
Ok so I have read up to page 30 of this thread andI plan on reading the whole thing but I havent found the answers to these questions yet. I hear the 12cm turbine is about .55 ar, but everyone just says approx. Does anyone actually know what the AR of the 12cm housing is? Is there a method to covert the cm to AR? What would be the ar of the 14 and 16cm housings? And if the 12cm is .55 than why do people go with the bullseye housing? To steer away from the split turbine?
ok dave il try my best w/ my holset knowledge....youy could actaully measure the a/r if you wanted all youd need is a caliper and some way to measure the inside of the housing...caliper etc...here is a pic to kind of describe what im talkin about

now that you understand this i can explain a lil more in detail...
the stock 12cm housing is what we refered to as a divided housing...where you could use the exh pulses to actually help spool up the turbo faster than just the exh gas pressure...this is often refered to as a split scroll turbo...hence the split in the turbine housing...now w/ the hosuing intact the a/r is around .55 , now if you were to grind out the divider and increase the area obviously the a/r raio is goin to increase...hence why when you grind out the divider the a/r is approx .63
now w/ the bullyseye housing its a .55 housing that isnt divided....so there is no restriction of the gas pulses hittin it if you were to run a undivided manifold...and you dont have to grind out the divider and increase you a/r...also bulleyes had internal wgs that you can add on to their housings making it a good setup as a whole...i still run an external gate...but if space was a concern...the internal gate would be an option...
now remeber when you decrease a/r....spool will be lower in comparison to engine speed...as when you increase a/r...spool will be higher in engine speeds....the problem is if you go to small on a a/r it will choke down the flow of the whole system...so a balance of both worlds is what you shootin for for an street car....whereas a drag car you could neglect the spool losses for increased power potential...and just build the car for the higher powerband
well i think that should siver it mostly...if you have any more ?'s postm up

now that you understand this i can explain a lil more in detail...
the stock 12cm housing is what we refered to as a divided housing...where you could use the exh pulses to actually help spool up the turbo faster than just the exh gas pressure...this is often refered to as a split scroll turbo...hence the split in the turbine housing...now w/ the hosuing intact the a/r is around .55 , now if you were to grind out the divider and increase the area obviously the a/r raio is goin to increase...hence why when you grind out the divider the a/r is approx .63
now w/ the bullyseye housing its a .55 housing that isnt divided....so there is no restriction of the gas pulses hittin it if you were to run a undivided manifold...and you dont have to grind out the divider and increase you a/r...also bulleyes had internal wgs that you can add on to their housings making it a good setup as a whole...i still run an external gate...but if space was a concern...the internal gate would be an option...
now remeber when you decrease a/r....spool will be lower in comparison to engine speed...as when you increase a/r...spool will be higher in engine speeds....the problem is if you go to small on a a/r it will choke down the flow of the whole system...so a balance of both worlds is what you shootin for for an street car....whereas a drag car you could neglect the spool losses for increased power potential...and just build the car for the higher powerband
well i think that should siver it mostly...if you have any more ?'s postm up
i'll probably end up getting the bullseye housing or try to find a 12 cm housing off of an hx35. I'm sure it fits my h1c since the bullseye housing for the hx35 fits the h1c. My current turbo is an h1c and its got a 21cm2 housing
. I've got an idea of how i could possibly get it to spool, which is blocking off one of the inlets into the turbo.
. I've got an idea of how i could possibly get it to spool, which is blocking off one of the inlets into the turbo.
you idea is a horrible one at that....get the smaller turbine ans call it a day...blockin off 1 section is going to create some much turblenece int he charge that your going to notice huge power loses
thats what i figured. I've already decided not to half *** my setup this time around lol. My first boosted setup was pretty much a hackjob lol. I'll either see if i can come up with the 12cm housing or i will just buy the bulls eye housing. The only thing i hate about it is the dp flange portion
. But i guess i'll have to live with it unless i find the hx35 turbin housing.
. But i guess i'll have to live with it unless i find the hx35 turbin housing.
I had an 18 cm^2 split tang Holset H1C that I gave to a friend with a built bottom-end Y8 because I thought I'd never spool it.
He doesn't get boost in first gear, but in second and on it spools at about 4k and makes 15 psi by 4500-5000 rpm and that's just on a 1.6 SOHC with a log manifold. I'm sure if he ran a divided collector manifold we'd get spool a little earlier. I'm very curious to see what happens when we block off one side of the turbine.
He doesn't get boost in first gear, but in second and on it spools at about 4k and makes 15 psi by 4500-5000 rpm and that's just on a 1.6 SOHC with a log manifold. I'm sure if he ran a divided collector manifold we'd get spool a little earlier. I'm very curious to see what happens when we block off one side of the turbine.









