I'm going to try it. I had Paul (99gst_racer) undelete the second post in the thread. I moved and added some brief highlights for posts for each page. I'm only through page 2 so far. I have to go back and bump the post count 1 to account for this additional post at the start. I might make it like the very first post (linked) so you just click each post link to view it, but it's even more time consuming, so no promises there.
We'll see how it works.
I need to contact Ludachris to see if a post can be added at the start of each of the Holset threads to do the same in the them.
I think this would be extremely helpful for new people as well as locating posts you remembered reading in the past. I know ive referred a few guys to these threads and they get intimidated by the first 5 parts at 1000 posts each. Were you planning on doing the same for those?
Either way, i like the linked idea and thank you for the time you have and will put into this.
I think i just found my unicorn. I was about to give up on it and just make an adaptor and stumbled across it tonight. I thought i had seen one before, but havent been able to locate or confirm it since then. I think it is a t4 17cm^2 hx40 exhaust housing. Ill know for sure when it gets here. Here are some pics.
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92 Talon hx40 TS 17cm^2
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Interesting I've never heard of a 17cm^2 hx40 turbine housing. I have a 19cm^2 t4 on mine.
Quote:
Originally Posted by Maglin
1. You can't add your boost to your base fuel pressure and try to calculate added fuel injected. The reason for the raising rate FPR is that the injector has positive or negative pressure on the pintle of the injector which will definitely effect fuel flow. All that is needed to attain the almost same amount of fuel flow is to change the fuel pressure behind the pintle the same amount as the pressure on the front of the pintle. So 660cc injectors with 44 PSI of base pressure pushing 30 PSI of boost is still pushing the same amount of fuel.
I think we were mainly talking about fuel pumps. Ceddy runs 650s? or something like that but they are rated at that flow at ahigher base fuel pressure. He was clearifying that they actually flow less at stock base fuel pressure. But you're exactly right on the information you're giving. Fuel pressure regulator is 1:1 which means there is no flow increase. The only thing that increases flow is pulse width. The fuel pump is the only instrument in the fuel system that isn't static in flow. It's always on full blast, but the flow goes down as total pressure goes up. As boost goes up so does the total fuel pressure: base + the same pressure as boost added by the FPR to keep the same injector flow. As you turn up the boost, the fuel pump can flow less and less total volume.
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Matt
dd '90 GST, Holset H1C
I've known that there were a few attempts to knock off a holset turbocharger. But it's come to our attention thanx to Justin (jusmx141) that there is a serious attempt actually to forge the name of these turbochargers. Any I think it should be brought up here. Knowing you're buying a knock off is different then believing you're not. We've built ourselves quite a nice little support system for this turbo choice. This is the number ONE best compilation of data and results with holsets on gas 4cylinders in the entire internet. Please look over this link to see the telltale signs of a forgery.
I have zero issue with buying ebay parts. I have a fake tial wastegate and ebay intercooler on my car. But I also KNOW they are not name brand. I know what I bought. There is no tial name on my wastegate. An evo3 “GT” is not an exact name to the evo3 16g. A namesake is not a name and any one not knowing the difference, frankly, deserves his results and his efforts. There is nothing wrong with buying a fake holset. But there is something wrong with forging a name. You need to know that we actually cannot help you with your questions, if you do. This is the number ONE best compilation of data and results with holsets on gas 4cylinders on the entire internet. But, the support system has no experience in fakes. And I can safely say that forgery is something that none of us will encourage in the first place. Lets give credit where credit is due and keep the leaches out. Namesakes and forgery are VERY different. And It should make your blood boil when you see someone trying to take advantage of others based on yours and your fellow enthusiast's input here. And, that is exactly what's happening: an attempt to downright lie to the consumer and a fellow performance enthusiast that sees eye to eye with you on a choice in turbocharger.
So to nip this right in the bud once and for all: There is enough used holsets to go around for all of us. Holset rivals garrett in the world market. It is the 2nd largest producer of turbochargers in the world. They ALL are big. There's no reason why you can't wait to get a real piece and have it rebuilt if you want new or it requires a rebuild. If you must have something virgin, go to a reputable vendor. Their names are scattered through out these pages. You will BY FAR be paying less than any other option out there as it stands with a real, used holset. Don't be a foolish consumer. So. . .
Buy used on ebay and have it rebuilt if needed. Buy new from a reputable vendor. Do this with all turbocharger choices. If you choose a fake, at least don't buy a forgery. We like forged compressor wheels; not forged brands. An ebay intercooler is infinitely less complicated than a turbocharger in every way. There's much less risk involved. We are not setup to help you with a holset forgery. We can help by encouraging you to get rid of it. The wonderful thing about holset is the durability of an OEM turbocharger that can be bought used for very little because of the vast abundance of engines these turbochargers employ. Again, There is enough used holsets to go around for all of us. And there's plenty of good rebuild shops that can net you an incredible deal on a serious, REAL piece of performance machinery.
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Matt
dd '90 GST, Holset H1C
Same here before, when I had the bolt-on. But somehow the bolts on the O2 got a little loose and the little space left between the main passage and WG hole/was using external off O2/, got burned. After that, I ordered another one from Turbo Trader/ it is actually much THICKER/, installed a Nord Lock washers and never had a problem.
Look at the sizes on HX-40 and HX-40R, if judging from their HP ratings, the 8balde is just 5% below the 6blade, so theoretically, if 6blade flows 70lb/min, 8blade would be aroen 67lbs/min. Not to mention, that the 6blade has significally bigger exducer on the comp. wheel. Don't forget, that the power jumped significcally on the FP turbos, making the comp. wheel exducer from 82 to 86mm in the 3586 HTA turbos. What is the exducer size on 6blade/60mm wheel?
It will be very interesting if there were some comp. maps for both turbos.
And last, but not least, look at their HX-45PRO. I allways felt, that hx-40 turbine wheel, could be mated with much bigger compressor wheel. This turbo would be best choice in my opinion, even with bolt-on housing. This turbo is extremely close in size with GT4094R, wondering what the spool-up on this thing would be in comparisson...
Look at the sizes on HX-40 and HX-40R, if judging from their HP ratings, the 8balde is just 5% below the 6blade, so theoretically, if 6blade flows 70lb/min, 8blade would be aroen 67lbs/min. Not to mention, that the 6blade has significally bigger exducer on the comp. wheel. Don't forget, that the power jumped significcally on the FP turbos, making the comp. wheel exducer from 82 to 86mm in the 3586 HTA turbos. What is the exducer size on 6blade/60mm wheel?
It will be very interesting if there were some comp. maps for both turbos.
And last, but not least, look at their HX-45PRO. I allways felt, that hx-40 turbine wheel, could be mated with much bigger compressor wheel. This turbo would be best choice in my opinion, even with bolt-on housing. This turbo is extremely close in size with GT4094R, wondering what the spool-up on this thing would be in comparisson...
Nice find on the website! It said on there under Hx40r that the 6blade was 60ind/87exducer
I'm kind of curious about the hx-45 as well. Those are big compressor options 66mm/100mm or 71mm/100mm. It looks like the 66mm is the hx50 compressor and the 71mm is the hx55 according to their specs but with the smaller hx40 turbine.
I'd love to see what it would do as far as spoolup and power! I do think these compressors are too big for the .55ar to make any more any more usable power than a hx40 compressor would. They would probably be pushing the ar70 to the limit as well.
Nice find on the website! It said on there under Hx40r that the 6blade was 60ind/87exducer
I'm kind of curious about the hx-45 as well. Those are big compressor options 66mm/100mm or 71mm/100mm. It looks like the 66mm is the hx50 compressor and the 71mm is the hx55 according to their specs but with the smaller hx40 turbine.
I'd love to see what it would do as far as spoolup and power! I do think these compressors are too big for the .55ar to make any more any more usable power than a hx40 compressor would. They would probably be pushing the ar70 to the limit as well.
I know, but that just confirms my theory, that the HX-40 turbine wheel is capable of much more... As far as the 0.55 bolt on , you are right, but it will be kind of DSM HTA 88mm, but in a Holset version, which is going to sound a little better like:
DSM Holset-100.
And doesn't matter what they say, but SIZE allways matters.
I mean the design is pretty simple and anyone can make it if you know a welder.
Yeah i have seen those before. Im curious as well how much it would help on a big turbo with our small displacement. It is going to create a lot of turbulence when closed though
I say it's time Holset gets it's own sub-forum under the Turbo Tech category.
...although if such a sub-forum were created, it should be accessible to new members as well. I believe there are tons of folks out there that can offer useable information on these turbos but they are not DSMers and will never pass the 50-post count necessary to be a proven member and post here.
For example, member SR20drag has tons of useful information from his HX35-powered SR20 thread in The Hangout, but he can't contribute to this thread or any other in the Turbo Tech section.
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~Justin~ '92 TSi FWD, '93 TSi AWD, '97 Eclipse GS
Look at the sizes on HX-40 and HX-40R, if judging from their HP ratings, the 8balde is just 5% below the 6blade, so theoretically, if 6blade flows 70lb/min, 8blade would be aroen 67lbs/min. Not to mention, that the 6blade has significally bigger exducer on the comp. wheel. Don't forget, that the power jumped significcally on the FP turbos, making the comp. wheel exducer from 82 to 86mm in the 3586 HTA turbos. What is the exducer size on 6blade/60mm wheel?
Per that website, their 8blade hx40 is a 60mm 8blade, probably a compressor wheel identical to yours, which isn't very common. You ahve a 60mm 8blade hx40, correct? The common 8blade hx40 has a 58mm inducer. We have the compressor map for the hx40r (pro, super 40) which shows 68lb/min. And we have the compressor map for the standard hx40 which shows about 60lb/min. This is the first place I've seen that has given a horsepower rating on the 8blade 60mm hx40 compressor wheel. It looks like the ratings are for gas motors and there ain't no what no diesel can make 600whp with an hx40. It can make 1500ftlbs of torque with one, but not that much hp.
As well, performance turbo shops rate/sell turbos based on compressor flow. It's pathetic! It takes two to tango as we know: a huge compressor means nothing with out a turbine that will exit all that potential flow. These could be compressor ratings.
Remember there are 2 different hx40 turbine wheels. A 10 blade wheel that flows a little less but spools a little faster. And a 12 blade (the most common) that flows more but spools a little slower. The 10blade comes with the super hx40 from holsets factory. Many however upgrade a common hx40 with the 12 blade turbine wheel, or turbo diesel shops build their own hx40s from holset parts and use the 12blade wheel with the pro/super compressor wheel.
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Matt
dd '90 GST, Holset H1C
I'll try my luck cutting the gasket, but that center ridge between the wastegate and outlet is very thin when cut which worries me of the exact problem described above!
I'll probably cut it, copper spray, and ensure the o2 housing bolts are cranked!
Still unsure of how well the ultra copper would seal if the surfaces arent 100% flat. I have used it soley as a "gasket" between turbo and mani on a SR20, it melts away the globs but still seals until disassembled.
Feel free to keep posting what works and what doesn't..
Interesting I've never heard of a 17cm^2 hx40 turbine housing. I have a 19cm^2 t4 on mine.
I had seen one when i was experimenting with the wh1c, but hadnt seen one since. I didnt think i would find one. I didnt want to go with the 19cm t4 housing and was just gunna make an adaptor to bolt up my 18cm t3 housing. Ill confirm that it wasnt just a typo when it shows up.
Another plus about it is that it has a damaged compressor wheel and i have a good spare 7 blade wheel and cover, so i will have a spare hx40.
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92 Talon hx40 TS 17cm^2
Here are some pics of the HX35 Im going to use. Its gonna get sent off to be rebuilt by JSMX141 real soon. Im still debating whether or not to use the t3 manifold with it or get the BEP DSM housing.
I mean the design is pretty simple and anyone can make it if you know a welder.
Ive seen this before, but the problems that i see is that it can only be used with a non-divided manifold otherwise it would totally shut off 2 cylinders. Because of that i think that it makes it not worth the money that they are asking for them and could be better used by putting it towards a divided manifold. Its an interesting idea, but i think a twin scroll setup would be alot better all the way around.
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92 Talon hx40 TS 17cm^2
Did a bit of test fitting with the HX40 this week. I will be bolting the turbo to an SBR cast manifold with the EWG provision, but I already had my EvoIII manifold bolted up from the 50trim setup so I used that assuming the SBR will fit similarly.
"Hmmm, where does this go"
It's hard to show how much larger the Holset is compared to the old 50trim. You only barely notice the 4"/2.5" vs. 3"/2.5":
BEP vs. PTE
Surprisingly, the giant Holset compressor housing cleared both the block AND the water pipe without denting!
However, the compressor outlet comes awkwardly close to the front motor mount, and I can already foresee clearance issues with the FP 4" Intake:
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Josh
Holset Hx40 powered in '09
This may be a stupid question, deserving a "search" reply...but I couldn't find anything.
Has anyone found a reputable place that rebuilds these turbos relatively cheaply? I have a 6-blade HX40 that blew on the highway last night during a pull, now it makes no boost and smokes bad.
Ive seen this before, but the problems that i see is that it can only be used with a non-divided manifold otherwise it would totally shut off 2 cylinders. Because of that i think that it makes it not worth the money that they are asking for them and could be better used by putting it towards a divided manifold. Its an interesting idea, but i think a twin scroll setup would be alot better all the way around.
O I am not telling you guys to pay that much for that thing. For god sakes its a flange and a actuator. You can make that for like $20 tops.
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1996 Toyota Supra 2JZGE-T
1991 Eagle Talon 4G63
O I am not telling you guys to pay that much for that thing. For god sakes its a flange and a actuator. You can make that for like $20 tops.
You will have more then that into it unless you got some of the materials for free. There are a couple of issues that i see over price. If you make it yourself you have to be very precise on how the rod goes through the flange. If it leaks at all it will be pre-turbo and increase lag. You would also want to use something that wouldnt rust for the rod and the flange so it wont seize up. This thing will also create alot of turbulence when its closed.
Why not just use a VNT holset and have the same effect and its already integrated into it?
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92 Talon hx40 TS 17cm^2
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