Holset H1C
12-08-10, 11:49 PM
#1
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Holset H1C
I've been doing a ton of searching, I don't know if I'm looking in the wrong spot or searching for the wrong thing but I can't find anything on this turbo for a 13b-rew
I can get my hands on one for dirty cheap its the big model H1c with 8 induction fins and 18cm housing, my goal power is only 400-450ish. 350ish on a conservative tune.
I'd like to get some more info on this application before I decide to go and pick it up.
I've read that 490hp was made on a 2.0l 4 cyl with this turbo and it was hitting 20psi @ 4000rpm
Anyone done this application on there Rew? I'm looking for quick boost and a consistent powerband, would like to stay within the Holset family.
I can get my hands on one for dirty cheap its the big model H1c with 8 induction fins and 18cm housing, my goal power is only 400-450ish. 350ish on a conservative tune.
I'd like to get some more info on this application before I decide to go and pick it up.
I've read that 490hp was made on a 2.0l 4 cyl with this turbo and it was hitting 20psi @ 4000rpm
Anyone done this application on there Rew? I'm looking for quick boost and a consistent powerband, would like to stay within the Holset family.
12-09-10, 12:04 AM
#2
go to search, advanced search, type in holset, click thread only. hit enter
here read some of these. will give you an idea on what CM housing to use and things of that nature. need to research. type holset hx35/40 in google. there is a TON of information on the DSM forums and i mean a ton. Anything and everything you ever needed to know
https://www.rx7club.com/search.php?searchid=9184177
here read some of these. will give you an idea on what CM housing to use and things of that nature. need to research. type holset hx35/40 in google. there is a TON of information on the DSM forums and i mean a ton. Anything and everything you ever needed to know
https://www.rx7club.com/search.php?searchid=9184177
12-09-10, 12:10 AM
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Ya I've spent the last 2-3 hours reading the dsm stuff only on part 3 -.-
I'm gonna keep digging the turbo isn't going anywhere fast, gotta love having a cousin that works at a truck wrecker
I'm gonna keep digging the turbo isn't going anywhere fast, gotta love having a cousin that works at a truck wrecker
12-09-10, 12:18 AM
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Motor has 120k, add this turbo it'll blow. An 16cm exhaust housing is massive ps. Would take forever to spool. Plus h1c's came on 1st gen cummins so it'll likely need a rebuild.
12-09-10, 05:09 AM
#5
To my understanding the 16cm housing is the smallest housing holset offers, and is too small for the rotaries. The one I'm in the process of purchasing from a friend is a hx40 with a 26cm housing on an FD and spools about as quick as my BNR stage III on my FC. And when these turbos hit, they hit hard, traction is a serious issue because of how violent these holsets hit on rotaries.
12-09-10, 09:38 AM
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Back on topic the exhaust housing is 18cm from my understanding not 16cm
12-09-10, 10:43 AM
#8
To my understanding the 16cm housing is the smallest housing holset offers, and is too small for the rotaries. The one I'm in the process of purchasing from a friend is a hx40 with a 26cm housing on an FD and spools about as quick as my BNR stage III on my FC. And when these turbos hit, they hit hard, traction is a serious issue because of how violent these holsets hit on rotaries.
12-09-10, 12:52 PM
#9
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16cm big? That ain't ****. I'm running the Holset HX40 with a 19cm hotside. I see max boost (15psi) by 3600 rpm on a super tiny streetported S4 motor lol. My turbo has VERY similar boost to my buddy's 35R. And yes these turbos do hit HARD. My BNR stage 3 would build boost earlier than this HX40 I have, but the process of building boost was slow. It was like 1 psi...5psi...10psi...15psi. This holset is like 1psi...BAM 15 psi! Even if your H1C needed a rebuild, the kits are stupid cheap.
I think your H1C is a T3 though right? That is gonna be kinda small for a 450rwhp goal. With my HX40 I'm hoping to make 450rwhp@20ish psi. I know you have bigger ports, but you'll need a T4 turbo. If that H1C is T4-CRANK UP THE BOOST AND GO FOR IT!
I think your H1C is a T3 though right? That is gonna be kinda small for a 450rwhp goal. With my HX40 I'm hoping to make 450rwhp@20ish psi. I know you have bigger ports, but you'll need a T4 turbo. If that H1C is T4-CRANK UP THE BOOST AND GO FOR IT!
Last edited by SmogSUX; 12-09-10 at 12:56 PM.
12-09-10, 01:18 PM
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16cm big? That ain't ****. I'm running the Holset HX40 with a 19cm hotside. I see max boost (15psi) by 3600 rpm on a super tiny streetported S4 motor lol. My turbo has VERY similar boost to my buddy's 35R. And yes these turbos do hit HARD. My BNR stage 3 would build boost earlier than this HX40 I have, but the process of building boost was slow. It was like 1 psi...5psi...10psi...15psi. This holset is like 1psi...BAM 15 psi! Even if your H1C needed a rebuild, the kits are stupid cheap.
I think your H1C is a T3 though right? That is gonna be kinda small for a 450rwhp goal. With my HX40 I'm hoping to make 450rwhp@20ish psi. I know you have bigger ports, but you'll need a T4 turbo. If that H1C is T4-CRANK UP THE BOOST AND GO FOR IT!
I think your H1C is a T3 though right? That is gonna be kinda small for a 450rwhp goal. With my HX40 I'm hoping to make 450rwhp@20ish psi. I know you have bigger ports, but you'll need a T4 turbo. If that H1C is T4-CRANK UP THE BOOST AND GO FOR IT!
12-09-10, 02:56 PM
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It's a t3.
I'm not sure what the porting difference is between a bt and rew is. My engine as it sits right now is stock with a power fc. This turbo setup will be done when I get some bigger injectors so most likely end of the summer. I'm just starting my research now.
I'm not sure what the porting difference is between a bt and rew is. My engine as it sits right now is stock with a power fc. This turbo setup will be done when I get some bigger injectors so most likely end of the summer. I'm just starting my research now.
12-09-10, 03:16 PM
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If it's T3 you're going to choke the turbo a little. Give it a try anyways? Lol..the Greddy Turbo kit that was out for the FC days ago used a 20G with a T3 design. T3 should work for you, but I don't think you're going to make over 400rwhp. Response should be really nice though.
And Gryffin I think it's just the design of the turbo itself. The stock turbos we have aren't designed the same. All I know is the Holsets are designed for slow cold diesel exhaust...now we don't have 6+ liters of displacement like the diesels, but our cars have some HOT and FAST exhaust gases and the Holset turbos are a great design.
And Gryffin I think it's just the design of the turbo itself. The stock turbos we have aren't designed the same. All I know is the Holsets are designed for slow cold diesel exhaust...now we don't have 6+ liters of displacement like the diesels, but our cars have some HOT and FAST exhaust gases and the Holset turbos are a great design.
12-09-10, 03:50 PM
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400rwhp is enough for what I need it for I'm looking for quick response so keeping the t3 would probably be in my best interest
Keep in mind this engine is in a Corolla not a RX7 so the power to weight is alot different
Keep in mind this engine is in a Corolla not a RX7 so the power to weight is alot different
12-09-10, 04:02 PM
#14
If it's T3 you're going to choke the turbo a little. Give it a try anyways? Lol..the Greddy Turbo kit that was out for the FC days ago used a 20G with a T3 design. T3 should work for you, but I don't think you're going to make over 400rwhp. Response should be really nice though.
And Gryffin I think it's just the design of the turbo itself. The stock turbos we have aren't designed the same. All I know is the Holsets are designed for slow cold diesel exhaust...now we don't have 6+ liters of displacement like the diesels, but our cars have some HOT and FAST exhaust gases and the Holset turbos are a great design.
And Gryffin I think it's just the design of the turbo itself. The stock turbos we have aren't designed the same. All I know is the Holsets are designed for slow cold diesel exhaust...now we don't have 6+ liters of displacement like the diesels, but our cars have some HOT and FAST exhaust gases and the Holset turbos are a great design.
12-09-10, 06:28 PM
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Just make sure you log your EGT...I think I remember reading that with a small turbo choking the system you could have heat buildup. Just keep an eye on it.
12-10-10, 05:38 PM
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And next month I'll post a dyno graph of my car @ around 15psi with my HX40....I'd go for 20psi, but don't have the funding for a boost a pump and some 1680 secondary injectors.
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