:::RHMT::: Real Home Made Turbo
General Category => Forced Induction => Topic started by: random-strike on February 25, 2010, 02:08:06 AM
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HX40
Anyone tried to lower the boost on the internal wastegate? adjust the screw to lengthen the rod??? kinda lame to have it open partially all the time and fuck up spool times.
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i wouldn't, just get an external wastegate, cdm all the way if your on a budget. ive never tryed to lower the boost on any of my setups, always trying to crank the mbc to nog :noel:
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i'm trying to keep it as simple as possible using an internal waste gate.
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well get a internal gate off a dsm/garret turbo thats around what you want pressure wise and make a bracket. thats not too hard. i have a stock dsm wg u can have
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looks like it should work.
http://www.dsmtuners.com/forums/articles-turbo-system-intercooler/211040-how-mod-your-internal-wastegate.html (http://www.dsmtuners.com/forums/articles-turbo-system-intercooler/211040-how-mod-your-internal-wastegate.html)
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Dont forget that the hx40w's wastegate only vents off exhaust from 1 scroll, you may be ok if you are not rocking a divided manifold tho.
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well get a internal gate off a dsm/garret turbo thats around what you want pressure wise and make a bracket. thats not too hard. i have a stock dsm wg u can have
ok i'll prob do this. i have a ton of them laying around.
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Dont forget that the hx40w's wastegate only vents off exhaust from 1 scroll, you may be ok if you are not rocking a divided manifold tho.
i don't know much about the turbo except that its one of the bigger ones i can find with a internal wg
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well get a internal gate off a dsm/garret turbo thats around what you want pressure wise and make a bracket. thats not too hard. i have a stock dsm wg u can have
ok i'll prob do this. i have a ton of them laying around.
ya why not it will work
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it wont work... my 2.5l was spooling my 21cm housing holset no problem with the wastgate wired wide open - holset wastegates are for regulating EGTs not really boost and will never work on a gas car. WOWastegate made 2 bar on my car right away.
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its going on a gas truck :P and ya the stock internal wgs are tiny, but he can only try, who cares if the boost hits nog. really a 44+ sizes external should be used.
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it WILL hit 20+psi no matter what you do, mine was redline limited to 33psi or so on a 2.5l revving to 7,000rpm which is rod snapper territory... i finally got an external, one piston later O0
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i know of at least a dozen people who have used these on mustangs
turbo mustangs forums is full of people using these. some using them as twins
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post a link you turd. I can link you to a few setups I know off the top of my head where stock holset wastegate = uncontrollable boost on a good flowing engine.
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The hole is pretty small. IIRC its 19 or 20mm or something like that. Just keep in mind you may have issues.
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i know of at least a dozen people who have used these on mustangs
turbo mustangs forums is full of people using these. some using them as twins
So your telling me a V8 is running without external wastegate/s and using one or more hx40's? I so doubt that. It only vents off one volute, there just isn't a way to vent the other volute and in this case the other bank ( If the manifolding is designed correctly).
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i know of at least a dozen people who have used these on mustangs
turbo mustangs forums is full of people using these. some using them as twins
So your telling me a V8 is running without external wastegate/s and using one or more hx40's? I so doubt that. It only vents off one volute, there just isn't a way to vent the other volute and in this case the other bank ( If the manifolding is designed correctly).
turbo mustangs forum has several cars running it.
they have twins one of each bank... dur
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links you faggot
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Go there and use the search I fby have them bookmarked
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no, you lying faggot, I know enough about cars and physics to know off hand you are a lying faggot. stick to race baiting and getting stuck in puddles. the pathetic flapper holes in both your mouth and the holset are not large enough to effectively regulate the flow of waste gasses that are endlessly being thrown at them.
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no, you lying faggot, I know enough about cars and physics to know off hand you are a lying faggot. stick to race baiting and getting stuck in puddles. the pathetic flapper holes in both your mouth and the holset are not large enough to effectively regulate the flow of waste gasses that are endlessly being thrown at them.
newb
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no, you lying faggot, I know enough about cars and physics to know off hand you are a lying faggot. stick to race baiting and getting stuck in puddles. the pathetic flapper holes in both your mouth and the holset are not large enough to effectively regulate the flow of waste gasses that are endlessly being thrown at them.
This.
However the flapper is large enough that you can drill out the housing to 15/16"th's without any sealing issues, and you can drill right through the divider to control both volutes. This will give enough flow to control this turbo.
That being said, internal gates are gay as balls touching balls, and Johnny should just weld that shit shut, and put an external gate on.
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it WILL hit 20+psi no matter what you do, mine was redline limited to 33psi or so on a 2.5l revving to 7,000rpm which is rod snapper territory... i finally got an external, one piston later O0
i was still boosting, just weakly with SHIT spool up when my internal WG opened up from a shitty tack weld breaking.
still made 20psi on antilag too.
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http://www.theturboforums.com/smf/index.php?topic=130915.0 (http://www.theturboforums.com/smf/index.php?topic=130915.0)
http://www.theturboforums.com/smf/index.php?topic=44389.0 (http://www.theturboforums.com/smf/index.php?topic=44389.0)
http://www.theturboforums.com/smf/index.php?topic=58953.0 (http://www.theturboforums.com/smf/index.php?topic=58953.0)
just to name a few... hx40 users
im going to use the hx40 and drill a hole into the other divide on the housing
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im going to use the hx40 and drill a hole into the other divide on the housing
So you have no idea how to properly use a turbo? n00b
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im going to use the hx40 and drill a hole into the other divide on the housing
So you have no idea how to properly use a turbo? n00b
i've turbo'd more things than you've owned faggot
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im going to use the hx40 and drill a hole into the other divide on the housing
So you have no idea how to properly use a turbo? n00b
i've turbo'd more things than you've owned faggot
Says who? you don't know shit.
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im going to use the hx40 and drill a hole into the other divide on the housing
So you have no idea how to properly use a turbo? n00b
i've turbo'd more things than you've owned faggot
Says who? you don't know shit.
dumbass newb. go look at your shitbox civic junk
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im going to use the hx40 and drill a hole into the other divide on the housing
So you have no idea how to properly use a turbo? n00b
i've turbo'd more things than you've owned faggot
Says who? you don't know shit.
dumbass newb. go look at your shitbox civic junk
Haha, your an idiot.
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http://www.theturboforums.com/smf/index.php?topic=130915.0 (http://www.theturboforums.com/smf/index.php?topic=130915.0)
http://www.theturboforums.com/smf/index.php?topic=44389.0 (http://www.theturboforums.com/smf/index.php?topic=44389.0)
http://www.theturboforums.com/smf/index.php?topic=58953.0 (http://www.theturboforums.com/smf/index.php?topic=58953.0)
just to name a few... hx40 users
im going to use the hx40 and drill a hole into the other divide on the housing
you fat retarded faggot they are all using external gates
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and you can drill right through the divider to control both volutes. This will give enough flow to control this turbo.
THIS. It was either a dsm'r or turbo brick that cut the divider down past the WG hole, and allowed more gasses to flow out. The velocity of the gas doesn't like hopping back over a wall to go out a hole.
Realize how much you aren't spending for injectors and a new turbo and use that savings to get a CDM wastegate.
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We'll see how it works because I already got the turbo
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...It was either a dsm'r or turbo brick that cut the divider down past the WG hole, and allowed more gasses to flow out. The velocity of the gas doesn't like hopping back over a wall to go out a hole.
It was neither, it was a cummins guy back in like 1995 - 1996.
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I'm not saying the first man in the world, I'm saying the last guy I saw who actually ran the turbo. Or if you want another way to see it, one of the latest gasoline-engine vehicles I saw it on.
Bust out the grinding bits and go to down. Ream it out like it's some girl's perineum that you're double-dipping. Aka taint/choda.
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Now the problem with that is you loose spool, to gain wastegate control. I would just drill out the one side to ~ 15/16th's to start, and if it is creeping, then drill through, and if it is still having issues, goto an external gate, or hog it out as HiProfile suggests.
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Or just buy the cheap ebay wastegate and not ruin a turbine housing being a cheap bastard. there no no reason to run devided and drill the housing.
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Or just buy the cheap ebay wastegate and not ruin a turbine housing being a cheap bastard. there no no reason to run devided and drill the housing.
ya there is, to control boost.
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Or just buy the cheap ebay wastegate and not ruin a turbine housing being a cheap bastard. there no no reason to run devided and drill the housing.
ya there is, to control boost.
The point i was making is if your going to drill the housing. You better off just buying a open housing.
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Or just buy the cheap ebay wastegate and not ruin a turbine housing being a cheap bastard. there no no reason to run devided and drill the housing.
ya there is, to control boost.
The point i was making is if your going to drill the housing. You better off just buying a open housing.
Why he can probably get away with just drilling the one volute out to 15/16ths, and it will probably do just fine, and still maintain the benefits of the divided housing. Even if he has to drill through the divide it is still better then a complete open housing.
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Or just buy the cheap ebay wastegate and not ruin a turbine housing being a cheap bastard. there no no reason to run devided and drill the housing.
ya there is, to control boost.
The point i was making is if your going to drill the housing. You better off just buying a open housing.
Why he can probably get away with just drilling the one volute out to 15/16ths, and it will probably do just fine, and still maintain the benefits of the divided housing. Even if he has to drill through the divide it is still better then a complete open housing.
How you figure? That is a very dangerous statement.
But honestly with the cost of a ebay 38mm who thinks this is a good idea. god damn.
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I figure because I have personally done it all the ways listed above (albeit with an HX-35, but same turbine wheel).
One other mod I forgot to mention, is that the backing plate stock is in the way, an only allows the wastegate flapper to open partially. There are aftermarket backing plates, or you can just to a little cutting and welding.
Response is still better with just drilling through then carving out the divide, or going to an open housing of similar size. As long as the manifold before it is still divided. The amount of extra flow through the turbine, in my opinion was not worth the loss of time it took to light, and the amount of boost lost in between shifts.
To give you some actual figures. On my truck, a stock HX-35 would light at 1450rpm, even with the wastegate actuator disconnected so the wastegate was essentially open, it would still slowly climbed to a max of 47psi. With the wastegate wired shut, it would climb to a maximum of 52psi. Both with drive pressures in the 80psi + range.
With the single volute drilled to 15/16th's, and the wastegate set to open at 35psi, it would maintain that with in about 2psi in 1st-3rd, in 4th it would creep to about 40psi, and in 5th, would hit about 42psi. It would still light at 1450rpm. Drive pressures in 1st-3rd were about 37-40psi, in 4th and 5th would skyrocket to 70psi+
With the divide drilled right though, boost would maintain solid at 35-37psi, in all gears, as long as I stayed near that 35-37psi drive pressures stayed close to 1:1 or 37-42psi range, but as soon as I tried for more they took off. It would light at ~1475rpm.
With the divide augured out, and cleaned up, it wouldn't light till 1575rpm, I could push it to ~38psi before drive took off, and it felt lazy between shifts.
I have never seen an open housing internal gate for a Holset of that size before, if you know of one I would gladly purchase it and test it and add it too the list.
Now I have never done this, but I have seen it on the internet :P of it being opened up to 40mm, now it took a fair bit of machining to accomplish, and I really don't know if it was worth it.
For the actual time and effort of each step, this is what I would suggest. Modify the back plate, and drill out the single volute and run it. If that is not enough, drill the hole into the second volute. If still not enough, get an external gate.
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Ill let everyone know how it works on a gas engine
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Ill let everyone know how it works on a gas engine
hopefully its pre-set to NOG for the Dyno :yes:
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I figure because I have personally done it all the ways listed above (albeit with an HX-35, but same turbine wheel).
One other mod I forgot to mention, is that the backing plate stock is in the way, an only allows the wastegate flapper to open partially. There are aftermarket backing plates, or you can just to a little cutting and welding.
Response is still better with just drilling through then carving out the divide, or going to an open housing of similar size. As long as the manifold before it is still divided. The amount of extra flow through the turbine, in my opinion was not worth the loss of time it took to light, and the amount of boost lost in between shifts.
To give you some actual figures. On my truck, a stock HX-35 would light at 1450rpm, even with the wastegate actuator disconnected so the wastegate was essentially open, it would still slowly climbed to a max of 47psi. With the wastegate wired shut, it would climb to a maximum of 52psi. Both with drive pressures in the 80psi + range.
With the single volute drilled to 15/16th's, and the wastegate set to open at 35psi, it would maintain that with in about 2psi in 1st-3rd, in 4th it would creep to about 40psi, and in 5th, would hit about 42psi. It would still light at 1450rpm. Drive pressures in 1st-3rd were about 37-40psi, in 4th and 5th would skyrocket to 70psi+
With the divide drilled right though, boost would maintain solid at 35-37psi, in all gears, as long as I stayed near that 35-37psi drive pressures stayed close to 1:1 or 37-42psi range, but as soon as I tried for more they took off. It would light at ~1475rpm.
With the divide augured out, and cleaned up, it wouldn't light till 1575rpm, I could push it to ~38psi before drive took off, and it felt lazy between shifts.
I have never seen an open housing internal gate for a Holset of that size before, if you know of one I would gladly purchase it and test it and add it too the list.
Now I have never done this, but I have seen it on the internet :P of it being opened up to 40mm, now it took a fair bit of machining to accomplish, and I really don't know if it was worth it.
For the actual time and effort of each step, this is what I would suggest. Modify the back plate, and drill out the single volute and run it. If that is not enough, drill the hole into the second volute. If still not enough, get an external gate.
I know you have experience with diesel's but to be honest gas engine are way different. they don't respond to divided housings like diesels, yeah there better in some instances but just not as dramatic as diesels.
But i spose i will shut up now and await results.
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Ill let everyone know how it works on a gas engine
hopefully its pre-set to NOG for the Dyno :yes:
boost is always set to nog
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I know you have experience with diesel's but to be honest gas engine are way different. they don't respond to divided housings like diesels, yeah there better in some instances but just not as dramatic as diesels.
But i spose i will shut up now and await results.
It is all just an air pump. I play with gas motors too.