FPGreen vs. HX35

[93_tsi_fwd]

Like the title says, Which turbo would you guys run?

I currently have both turbos but im running the fpgreen right now since its a direct bolt on. My original plan was rebuild the fpgreen and sell it to buy the holset a BEP dsm bolt on housing.

My goal for my car is around 400hp to the wheels. Mod list is up to date. I know 400 is obtainable with both the turbos.

I cant decide.

 

[e85_4g63]

Nothing wrong with a Holset... On the other hand, can't beat FP!

 

[rowdygst]

Fp all the way

 

[JusMX141]

Are we talking old-school FP Green, or new-school billet HTA Green?

 

[Boosted98gsx]

definitely dsm over diesel.

 

[93_tsi_fwd]

Are we talking old-school FP Green, or new-school billet HTA Green?

Im guessing its an old school fpgreen. td06 turbine wheel with non billet compressor wheel.

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[talonDSMerr]

I like the OE quality of Holset, stringent QC to last hundreds of thousands of miles. Oh, and they're not too shabby at high boost. I have no experience with any other aftermarket turbo, so I won't cast a vote.

 

[goodbuds]

for quality and price you cant go wrong with a holset.

 

[JusMX141]

definitely dsm over diesel.

What's the argument here? The T04E50 compressor used in the old-school Green came from diesel turbos used on various mid-sized tractor and equipment engines. The TD06H turbine is also a turbine wheel used exclusively in diesel applications, so pretty much the only part of a FP Green that didn't derive from a diesel is the turbine housing that you bolt to the manifold.

Im guessing its an old school fpgreen. td06 turbine wheel with non billet compressor wheel.

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Are you certain the turbo is a Green? The turbo in the center of the photo has a compressor with blades that are "swept" backward along the leading edge, like the 54, 57, and 60-trim Garretts. The Green's 50-trim compressor has straight leading edges. I really don't think you have a FP Green there.

Regardless, directly on FP's site it states the great Curt Brown went 10.7 @ 130 with the DSM Green on one of his cars ages ago, and the fastest HX35 among DSMs has gone 10.71 with a best MPH of 137.74- although that was not done with the DSM bolt-on housing it still illustrates the potential of the HX35 on a good setup.


They're both great turbos. The Green is probably going to spool a little slower than the HX35 in a DSM bolt-on housing, but not by much. Both turbos are very durable and dependable....and both will definitely get you to your goal.

 

[91stocker]

The holsets seem to do pretty well...

 

[awdmonster1904]

I dynoed 467hp 435 tq on fp green on E85
I also ran a 11.6 @ 123 with crapy 60ft.

Holset turbos are bad ass too they love high boost 30 to 35
I don't think the green like anything higher than 30 psi
For your goals both turbos are good

 

[1990AWD]

I think the HX-35 should be divided by having a bolt-on housing and using the original twin scroll. I have been thinking I would either use a FP Green or HX-35, but only use the HX-35 in a twin scroll, as that would be the real benefit of the turbo.

 

[big_d]

Do I have preferences? ...not really.

Good luck OP to whichever you choose.

 

[bastarddsm]

Jesus. Its pretty simple. In the hands of an average tuner a 7blade hx35 is good for atleast 100whp more than the green. The holset is a pain in the ass to install nicely. I have about 100 hrs in my header, 02 housing, and oil lines. A green will bolt up using factory shit.

Holsets are durable as hell. They are the go-to unit in tractor pulling. We run a hx60 on our 1500hp durmax. 70psi and no bov. Imagine how hard that is on the turbo. Ain't no mitsu garret hybrid in the world that wiould survive that.

 

[ed1380]

holset- cheap. reliable. no instructions included
fp green- expensive. reliable. less of a hassle.
both have the same performance but are for different people. It's the OP's decision as to what suits him best

 

[JusMX141]

Wow, this thread has completely gone to shit since I last looked a few hours ago.

I'm going to edit everything out of this thread which doesn't directly pertain to the OP's question of what turbo he should run and why if you guys can promise me that this thread will not turn into a gunslinger again. Please, no more nonsensical posts that are obviously going to lead to a flamewar. If you haven't used one of the two turbos the O.P. is questioning personally or had direct contact with someone who has, please do not give your opinion.

 

[bsbllfit7]

I think what someone should post is the Airflow per Airflow differences. Im not positive about the hx35 but Old School greens flowed 47 lbs/min and newer ones i believe flow 54 lbs/min. If im not mistaken the 8 blade hx35 flows 52 lbs/min and can reach that in the bep housing. Im not sure what the 7 blade flows and anyone that wants to correct me feel free. Also those numbers can be multiplied by 10 to find out relatively how much whp the cars can make with those turbos. I myself am running a used older green at 24 psi on a mix of 4 gallons e85 and the rest pump 92 and am reaching anywhere from 412-437 horsepower as shown through link with the cars weight as accurate as can be. I love my green but im sure id love a holset too. Green was much easier to install which is what held me back from getting the holset. However i may be upgrading to a hx40

 

[93_tsi_fwd]

I should of added in my first post that the turbo has been rebuild by me since thats what started the whole flaming. Its currently boosting 10 psi for break in but will crank it up to about 22-25 psi on 91 octane cali piss gas.

I would like to see a flow rate for both turbos.

I heard or read somewhere that holsets spool as quick as a 16g. Is that true?

 

[bastarddsm]

Well, I'm sure I'll be ignored again but, a 8 blade hx35 is good for ~ 52lb/min, the 7 blade is good for ~58lb/min. I'm not positive but the green is in the upper 40's. The 7 blade should be good for 100whp more than the green. That being said plenty of people have gone really fast on both turbo's. The holset can make more power, but the green bolts right on. It's a trade off, higher power ceiling or ease of use. In the right hands an hx35 can spool fast as hell, but the average guy won't get 16g like spool out of it. With an open manifold and 20cm housing, I saw 25psi at 5200rpmin 3rd. I now have a twin scroll setup, and saw 25psi at 4500rpm in 3rd. I'm switching to a 12cm soon, so hopefully its lower yet.

Don't buy a holset because it is cheaper than a green. In reality it costs just as much to run the holset as a green. Yeah, you can scrounge and build what you need, but time = money. Furthermore the cost of everything else you have to do (clutch, trans, engine, fuel system, intercooler, ect) is so huge compared to the cost of the turbo, it doesn't even matter. Buy the holset if you want 500whp+

Also, if this is for your galant, good luck. Theres about no chance in hell your getting a hx35 in there with a full radiator, and any kind of a cooling fan. A green has a much smaller compressor housing, and has a better chance of fitting. I have a ggsx here, and its kinda tight with all stock parts.

Personally, I have a hx35, and I love it, but its a pain in ass. Once I run 10.99 on it, I'm taking it off and down grading to a green or a 20g. Anything thats not a bolt on is just too much hasel on a dd.

 

[1990AWD]

I heard or read somewhere that holsets spool as quick as a 16g. Is that true?

Mr. Peepers has a twin scroll HX-35 on a stock 6-bolt and he spools before 4000 rpm (he make 470 ft-lbs at ~ 4000rpm). With a higher compression engine, I would assume the turbo would spool even sooner. Here is his dyno.

 

[bsbllfit7]

Your not being ignored but I will clear up that the older greens run 47 lbs min and new style is 54 lbs min. The bep housing will not allow the 7 blade to run to its potential and will require a t3 housing to reach its maximum. That was from a holset thread. If I wasn't on my phone I would find it and quote it. An fp red is also like 59 or so lbs a min. Also when in the t3 housing spool will go up as compared to the bep housing. Once again people with much more knowledge feel free to jump in.

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[93_tsi_fwd]

Well, I'm sure I'll be ignored again but, a 8 blade hx35 is good for ~ 52lb/min, the 7 blade is good for ~58lb/min. I'm not positive but the green is in the upper 40's. The 7 blade should be good for 100whp more than the green. That being said plenty of people have gone really fast on both turbo's. The holset can make more power, but the green bolts right on. It's a trade off, higher power ceiling or ease of use. In the right hands an hx35 can spool fast as hell, but the average guy won't get 16g like spool out of it. With an open manifold and 20cm housing, I saw 25psi at 5200rpmin 3rd. I now have a twin scroll setup, and saw 25psi at 4500rpm in 3rd. I'm switching to a 12cm soon, so hopefully its lower yet.

Don't buy a holset because it is cheaper than a green. In reality it costs just as much to run the holset as a green. Yeah, you can scrounge and build what you need, but time = money. Furthermore the cost of everything else you have to do (clutch, trans, engine, fuel system, intercooler, ect) is so huge compared to the cost of the turbo, it doesn't even matter. Buy the holset if you want 500whp+

Also, if this is for your galant, good luck. Theres about no chance in hell your getting a hx35 in there with a full radiator, and any kind of a cooling fan. A green has a much smaller compressor housing, and has a better chance of fitting. I have a ggsx here, and its kinda tight with all stock parts.

Personally, I have a hx35, and I love it, but its a pain in ass. Once I run 10.99 on it, I'm taking it off and down grading to a green or a 20g. Anything thats not a bolt on is just too much hasel on a dd.

Yeah, its going to be for the galant. I barely have enough room for the green to fit on a full size radiator. If i end up going with the holset, im switching over to a civic 3 row half size radiator.

So it would be better off running the hx35 with the stock 12cm twin scroll housing instead of the bep to to reach its limits? How much power are you making at 25psi?

 

[phunny]

If your goals are only 400hp I'd go with the green. You'll get what you want plus the ease if the install.

 

[bsbllfit7]

I guess what should be asked is what kind of fuel will be used as well! Goals might be easier to hit on a t3 hx35 7 blade on pump but will exceed your goals on e85. Also on pump the green can get you there but requires a better tune!

 

[-red97rum-]

I've been running an 8 blade HX35 in a bep turbine housing for about a year now. Can't complain one bit, just make sure you run a big enough return line (kind of a pain in the ass) and have a restrictor in the feed line. I've been beating the shit outta this turbo for the past year or so at 30+ psi of boost and the shaft play is still golden. I rebuilt the turbo myself with one of trader Greg's $50 kits. I can see 25+psi of boost around 3800rpm, the trade off is the bep housing chokes it a little up top I believe.

But if 400hp is your ultimate goal, throw that green on there. Look at my buddy Frank's (awdmonster1904) post above.. The green is more than capable of meeting your goals, and like previously mentioned, will bolt right up using all the stock shit.

Personally, I have a hx35, and I love it, but its a pain in ass. Once I run 10.99 on it, I'm taking it off and down grading to a green or a 20g. Anything thats not a bolt on is just too much hasel on a dd.

Same here, except I don't think mine is a pain in the ass, it's actually been a really solid unit. That's all I'm trying for too, run a 10.99 on shitty street tires and then it's time to bolt on the hx40 that's sitting in my garage.