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Blazius
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« Reply #60 on: September 05, 2021, 12:50:54 PM »
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What do you guys think about GT2871r on the 1.8T?
GT28R looks like a waste of time when a K04-023 hybrid can easily do similar numbers, but the GT2871r looks like a ton of fun. Also when looking at kits and parts for a GT2871r it looks like a pretty doable and not extremely expensive swap.
K04-023 hybrid would cost me a bit less, but considering the GT2871r it's potential it leaves me wondering if i wouldn't be disappointed with just a "simple" K04 023 hybrid build. Holset HX35 looks fun too, but i'd prefer having bolt on parts such as manifolds, downpipe adaptors and oil lines etc.
If you are not going bolt on, there is a good choice that makes sense, g25 550. Its the perfect size for the 1.8t. You can get one from pulsar, pretty much only difference being that turbine wheel is inconel not mar-m from garrett. |
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fknbrkn
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mk4 1.8T AUM
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« Reply #61 on: September 05, 2021, 01:25:05 PM »
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Disco potato (28rs) are the most common way to upgrade 1.8t back in 00s so there is a tons of it at vortex
71 a bit laggy for 1.8 and id say 60 is the better option here for a daily. Eapecially gen2
023 hybrid is a lottery + as we know tt225 runs lean -> ends up with cracked manifold
Personally i like k04-064 with 2.0 stroker with cr9.0 for a daily car
Amg b03, rs3, s200sx for a 400+ also would be pretty fun and spools @3500
Beware of a diesel holsets. Theyre cheap but old and laggy af
It depends on the way you use the car. If its for a track - small hybrid would be a bad choice and the other hand hx35 are the hell no for the city drive
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Sandstorm3k
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« Reply #62 on: September 06, 2021, 04:00:41 AM »
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It will still be my daily that's for sure. I want to make some good power with decent spool. I think the GT2860 doesn't make enough power over a k04 hybrid.
I do agree on the hybrid lottery, but any K04-023 hybrid should easily do 300 at the crank i believe.
I'm going to do some more research on K04 064 builds and big turbo setups. If an 064 can easily push 350 at OEM reliability it's a good contender for sure.
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fknbrkn
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mk4 1.8T AUM
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« Reply #63 on: September 06, 2021, 05:14:47 AM »
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The problem with the hybrid turboes is the a/r stay the same
And for 300+ its a not good choice for sure. 064 or gts are better option here
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Sandstorm3k
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« Reply #64 on: September 06, 2021, 09:09:27 AM »
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The problem with the hybrid turboes is the a/r stay the same
And for 300+ its a not good choice for sure. 064 or gts are better option here
What would you say an 064 could do power wise, with all bolt on modifications? Also I'd suppose doing rods (and bearings) will still be a must due to it's low end torque. Little K03s is starting to sound more like a supercharger so I've put the car in the garage for the coming weeks. |
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Sandstorm3k
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« Reply #65 on: September 09, 2021, 03:18:30 AM »
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I made up my mind, it's going to be either the GTX2860R or GTX2871R
Prices are so similar the 2871r looks like a real fun toy. I'm currently looking at the PULSAR GTX2871r, i'll need a T25 manifold to go with it and they sell those V band adapters for these turbo's on Ebay. All i'd need is someone to weld me a downpipe adapter and i'd be good to go. How come these Pulsar turbo's can be so cheap, yet they seem to have pretty good reviews compared to like a double the price Garrett.
Only thing i'm not very certain about is what oil, and coolant lines i'd need. I'm completely new to this stuff still so i'll have to do read some more stuff.
G25-550 looks like an extremely fun turbo, except there is tons more information about these 2860 or 2871r turbo's. And they are even a tad cheaper too.
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prj
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« Reply #66 on: September 09, 2021, 04:43:06 AM »
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2871 is a horrible turbo, the turbine is undersized for the compressor wheel.
More lag for nothing. It needs GT30 turbine.
It won't make any more power than GTX2860 but it will give more turbolag.
Same like a GTX3076 is very bad.
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Blazius
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« Reply #67 on: September 09, 2021, 04:59:36 AM »
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I made up my mind, it's going to be either the GTX2860R or GTX2871R
Prices are so similar the 2871r looks like a real fun toy. I'm currently looking at the PULSAR GTX2871r, i'll need a T25 manifold to go with it and they sell those V band adapters for these turbo's on Ebay. All i'd need is someone to weld me a downpipe adapter and i'd be good to go. How come these Pulsar turbo's can be so cheap, yet they seem to have pretty good reviews compared to like a double the price Garrett.
Only thing i'm not very certain about is what oil, and coolant lines i'd need. I'm completely new to this stuff still so i'll have to do read some more stuff.
G25-550 looks like an extremely fun turbo, except there is tons more information about these 2860 or 2871r turbo's. And they are even a tad cheaper too.
Noo, trust get the g25 , you will have full spool before 4k or less with vvt with any housing. Its perfect match for stock displacement. |
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sonique
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« Reply #68 on: September 09, 2021, 05:01:20 AM »
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old gt2871r make same power
k04 hybrid
last 1,8t 400hp gt2871r full boost 4500
k04 hybrid 405hp full boost 3500 this k04 bigger hot side turbine than gt28 ant little bigger turbine house like original
1,8t not use any old gt287x turbo not good
maybe best options gtx3067r gen2 but this turbo not possible buy only gen1
g25-550 same size bigger k04 hybrid only housing bigger but not make 550hp 1,8t
approx 400-440
all G series turbo over rated approx 100hp
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« Last Edit: September 09, 2021, 05:18:00 AM by sonique »
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Sandstorm3k
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« Reply #69 on: September 09, 2021, 09:14:27 AM »
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Thanks for joining in all - so much to take into consideration here The goal is not ridiculous power, it will be my daily and as such i'd like decent spool time and good power. For now the plan is to chug in rods aswell. https://www.pulsarturbo.com/product/pulsar-gtx2860r-gen2-turbo/https://www.pulsarturbo.com/product/pulsar-gtx2871r-ball-bearing-turbocharger/These are the two that really caught my attention. GTX28 (and G25-550 too) look like a good match. I also quite like the way of power delivery of these big ish turbo's over a hybrid K03/K04. 400hp is more than plenty, the original goal was ~350ish HP. I kind of made up my mind on the GTX2871r from Pulsar, so you'd say the GTX2860r (Pulsar) would be a better match if i wanted to take a shot at 400 HP at the crank? G25-550 really looks good, but is it worth over 300$ more than a GTX2871r or GTX2860r? |
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sonique
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« Reply #70 on: September 09, 2021, 12:05:15 PM »
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not buy 2871
2860 or 2867
2867 gen2 not problem 400hp
but better 3067 gen2 but this only possible build your own
2860 all size smaller than g25-550
i think g25-550 or gtx2867r gen2 or K04 hybrid /not k03/04 /
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Sandstorm3k
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« Reply #71 on: September 09, 2021, 12:39:26 PM »
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not buy 2871
2860 or 2867
2867 gen2 not problem 400hp
but better 3067 gen2 but this only possible build your own
2860 all size smaller than g25-550
i think g25-550 or gtx2867r gen2 or K04 hybrid /not k03/04 /
Very well, thanks for your knowledge. I'll probably go with a Pulsar GTX2867r GEN2. Now i read online that GT2860 doesn't necessarily need forged connecting rods as the torque is low enough on early RPM's. What would you suggest, do them anyway for peace of mind or just send it? |
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BlackT
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« Reply #72 on: September 28, 2021, 08:56:42 AM »
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Gt2860 can bend stock rods
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prj
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« Reply #73 on: September 28, 2021, 09:58:59 AM »
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2860 will easily destroy rods if you go over 1.5 bar at lower end.
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Antek
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« Reply #74 on: September 30, 2021, 08:55:24 AM »
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stock k03 in good condition can make bit over 300hp, k03 hybrides probably are able to produce even 400hp, my friend has those but right now he waits for dyno so i cant tell for sure what numbers he will get, but compressor case walls are very very thin in this case, guy who made turbos for me did not wanted to take risk so i went for chinese k04 with melett cores. if you dont shoot for over 300hp i sugest going with k03 with a bit bigger compressor wheel it would give you better performance over 4k rpm and you wont need to replace turbo inlets
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