G25 660, G30 770, GTW3476, GTX3582R Gen2 compared
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- čas přidán 24. 07. 2024
- This Video is in response to requests by our subscribers asking for a direct comparison between the G25, GTW3476, G30 and GTX3582R Gen2 turbochargers - This is a little more in depth than a simple comparison - anyways the video covers compressor maps and the formula used to plot them. I tried to keep this simple as possible without using too many formula references etc. Enjoy -
• G25-660 External waste... - link to the G25-660 video - Auta a dopravní prostředky
Hi, I’ve been binging your videos over the last 4-5 months and just want to say thanks for all these informative videos.
In hindsight I wish I spent more time learning about larger turbos and the differences precision, borg, Garrett, etc offer before
I made my selection. I was on a time crunch so I kept to my original plan and went with the g30-770 but I now know what I want for my end goal once I have a built forged motor.
Thanks again!! Looking forward to future uploads :)
Glad you enjoy the content - more to come when possible.
@@TurboDirectSA looking forward to the future content!
U make the best Turbo videos period!
Thank you sir
@@TurboDirectSA Quick question. U think I can get away with the G30-770 on my 2016 Golf R 2.0 liter? I seen some videos where they seem to spool up really fast on MK6's and I have an MK7 thats being built to go as fats as I can. What is ur opinion? I do street the car. a lot tho but 90% hi way .
@@TENNESSEETRACKHAWK From experience, the EFR7163 spools faster than the G30-series and costs less money. Its a better cooled turbo aswell as more reliable. The Water ports and aluminium bearing housing are a winner! The Gamma TI turbine wheel is extremely light weight and you'll definitely see the benefit.
Great video and informative as always
thank you for all the time and effort you put into this video
it really on off the best
educational video's
that i think Garrett should pot it in their website
Thanks for the comments - much appreciated
Excellent explanation about graphing out a turbo map
Thank you Randy.
Highly educational!
Thank you for the compliment
i learnt something new never knew these pressure maps exist.
Sure - all compressors from reputable companies have compressor maps.
Very informative I have a Garrett 3071 on my 4agzte engine ,I use the original supercharger on a 14lb pulley for below 5000 rpm for low response ,it also increases volumetric efficiency, more exhaust gases to spool this size turbocharger on my 1600 cc engine thank you great vide😀
Thats a cool project thanks for sharing the info. The 4AGE's are nice!
Great educational video. It will help me out on selecting the right turbo for my car. I don’t know if you have produced a video about AR on the turbine housing. Can you tell what video to watch that you already produced that relates to turbine housing AR? THANKS.
Thanks for the compliment. Yes i have made a specific video on housing AR's - check the channel - you will find the video there.
Absolutely great video, you're the first one I see who really goes into the details of compressor maps and how to plot your engine to it. 👍🏻
I would have a question, seeking for your thinking on the topic.
I run the good old Audi 5 cylinder engine. 2.2 liter.
Currently, I'm running a GTW3476R on it. Basically the ball bearing variant of the GTW you cover in this video.
I'm reving to 7.800 rpm at 2.26 bar of boost (gauge boost). I'm actually ending up at 673 HP at the crank.
As you also nicely said, the GTW is not the best spooling and responsive turbo. Hence I was looking for an alternative. I'm fully fine with loosing a couple of horses as a tradeoff for better spool and response.
Let's say we want to stay right around that 600hp mark, would you go for a G30/G25 - 660, capping out at maybe 550hp, but have better spool, or would you rather tend to the G30-770, which should be capable of 600 horses, but having bit slower spool?
Or would you even say the G30-660 might be capable of 600 horses and still maintain and survive that boost pressure all the way up the rpm range I'm going, without falling off at the top end?
Thanks 👍🏻👍🏻👍🏻
Thanks for the comment, glad you are enjoying the content. The G-series turbos will underperform alot worse than the GTW you currently using. There are alternatives to the G-series turbos which are ball bearing and cost less, yet make the claimed power. I would look immediately toward the EFR8370 which will outspool the GTW, and G30, and make the claimed power without a doubt. This is essentially a 750HP advertised unit, BUT the map shows closer to 800HP capacity.
@@TurboDirectSA Thanks for the info! So far, I was shy of using an EFR turbo because most of the turbine housing setups are internally wastegated, and I wasn't sure how well that's going to perform, boost control wise, and from reliability aspects.
But if you propose that turbo, I will have a look at it. Thanks again and keep it up. Really enjoying your content!
@@TurboDirectSA Just to let you know, based on your great advice and help, I now got an EFR8370 for my 5 banger. I went for the externally gated AGP v-band turbine housing with 0.82 A/R as the twin scroll options do not really make sense on 5 cylinder engine from my pov. Will let you know how it performs. Thanks again for the recommendation!
@@TestDriveInline5 Hey Buddy - thats good news - im sure you will love that turbo! Let us know how you go with the project. Exciting stuff!
@@TurboDirectSAit's been awhile, but I still owe you feedback on your turbo recommendation.
In short: the EFR8370 is an awesome turbo for this engine! Just as you proposed.
Compared to the previous setup - using the GTW3476R - the boost threshold is about 350 rpms earlier, although the dimensions of the turbine housing and the EFR turbine wheel are way bigger. I was speechless when seeing this!
Also, engine response is way better.
I still run the EFR compressor housing, with the built in recirculation vavle. I just replaced the original BW valve with the turbosmart drop in replacement, which is just way stronger and can sustain higher boost pressures better. With this, spool up and response, especially at gear changes, are crazy. There simply is no noticeable boost lag, although I'm not -yet- running shift cut.
Also, a positive side effect due to this hybrid turbo combining the turbine wheel of the 7670 and the big compressor wheel of the 8374, this turbo is just capable of insane power output at way lower boost pressures.
Again, compared to the previous setup with the GTW, I'm running the same power, but at 0.26 bar less boost. Actually, it's even better. I'm hitting 705hp now with only 2.0bar of boost. Previously 670hp with 2.26bar. (yes, conditions at the Dyno runs have been almost identical).
So, once again, I can only say a BIG thanks for your help and recommendation on my turbo setup. It fulfilled everything I was hoping for, and more!
I hope you continue to gain more attention with your work, you more than deserve it! Cheers from Germany
Hello @TurboDirectSA, I've been watching your videos to learn about turbos. I've learned quite s bit however I am still unsure in choosing turbo. I have M54B30 and so far I choose G30-660 with .83A/R. Would that be a wise choice? I will be keeping stock intake manifold with DISA so engine should be quite efficient in low rpm range. I will use it for street driving with around 450HP.
Thanks for the comment - to be honest if this was my car, would consider the BorgWarner EFR8370 - this turbo will outspool, and far outperform the G-series Garrett. Over time the G-series has disappointed many tuners, and is overrated. The EFR Gamma-TI turbine wheels are unmatched in spool, linear response and overall performance. The 8370 will produce more power earlier and for longer in the RPM range and make for a very street-able setup, with much better reliability at less cost.
@@TurboDirectSA Thank you for the response, I will check it out!
G30-770 twin scroll is crazy sweeet on Honda S2000...
What are the chances for us to see a visual comparison of GTX3584rs vs the new G35? Im really curious how and why the older Gtx3584rs has 2% higher turbine wheel efficiency according to garrett. They are both 68-62 turbine wheels. It would be really interesting comparison to see the design differences. Also do you know when/if any G30 and G35 T4 divided turbine housings will be available?
Will do Abec777 - Once the G35's land ill do the review and comparison - ill be installing the G30-900 and G35-900 and G35-1050 into a fully built 1JZ and show real life results between the different turbochargers - this will be done around February 2020 - look out for this video.
@@TurboDirectSA Ok i will!! Do you have any date if theyll release divided turbine housings for the G30-G35?
@@abec666 not as yet buddy - we are told by Garrett first quarter 2020 - lets hold thumbs
@@TurboDirectSA Thank you. I can see you really love turbochargers. Im in the same boat.
@@abec666 Eat sleep live and breath turbochargers - not much we dont know about them. Watch this space for something new coming soon
On the K20c1 2.0 lit motor for the fk8 Type R at 10:1 compression, port and polished head which removed the fuel tumbling giving it 300cfm of flow is the G30-770 a good turbo for the street? Stock cams for now. This is run on a 4 port boost solenoid with a 7lb wg spring. Whats the max boost pressure it can achieve? 40, 45 psi? My goal is 700 to the ground. The k20c1 has no individual exhaust ports, basically one port with the turbine housing almost directly on the headifold. I would suspect this would aide in turbo transient response. What are your thoughts? Good street, circuit turbo, drag turbo or all of the above?
We made 716whp/506wtq at 30psi on a g30-770 on a TR2 cammed, JSR ported head K20c1 running stock compression on JSR pistons from Traum with Carillo rods. Electronic wg actuator like stock.
Street spool - roll race car with sequential trans
Im guessing a gen 2 gtx3582r will spool slower than a gt3582r given that the gtx has a 66/82 billet compressor wheel vs 62/82 cast wheel in the gt3582r. Do you know how many rpms slower the gtx gets full boost of 20-22psi? Thanks
Keep in mind that yes the compressor might weight more and have a larger diameter, BUT its more efficient than the cast 6 blade splitter, so flow low down is improved, which will provide additional air flow low down, elliminating the lag.
Hi, what turbo will work the best for a 2.0 20v stroker... between 3700-7500RPMS peak boost atleast 650hp its for street racing and drag racing 1/4mile. Thanks in advance
Eduan the turbochargers that make this power will begin to boost over 3000RPM on the 20V stroker, but at that power the boost pressure required will be high, and full boost (wastegate open) will more than likely occur above 4000RPM. The EFR7670 will produce the 650HP and on that engine you will see this power at the wheels or very close to it.
The EFR7163 will spool much faster and probably save you around 500RPM, but will max out at around 550WHP.
@@TurboDirectSA thank you bud i really appreciate the reply will definitely look at the turbo.
I like it
Thanks Alain
Whats the difference in silicone nitride balls and ceramic balls?
Silicon Nitride has a better shock resistance compared to other ceramics
Thanks! And btw my tuner was only able to max out to 21 psi on the g30-770 with a 4 port solenoid with a 3lb wg spring in the Turbosmart 45mm hypergate in my 2.0 liter Fk8 Honda Type R. Will changing the wg spring to 7lb double the max psi boost to 40 psi or more? On Motec m142 Vit version for the fk8.
@@weduhpeople8504 It wont double it per say, it depends on many aspects of the build. I would install a 15PSI spring as this will improve response from the already laggy G30 turbo, and then control the boost to where you want it.
hi i have a BMW e46 328 with the engine M52B28TU can you tell me pls whitch is the best turbo who have boost from 3000-3500RPM and have about 350 ~400 hsp i think about 0.7~1 bar boost to be safety thank you in advance
Thanks for the comment - what is the car being used for ? Circuit racing, street driving, drags? Depending on this i would make different recommendations
@@TurboDirectSA street drive that will my every day car I know that the stock internals from the engine a good till 450 hp so maybe at some time later i can update but now i would drive it stock so thats my target about 350-400 hp I need it reliable
@@moiseiboianov7450 thanks for the info - store.turbodirect.co.za/index.php/shop/turbochargers/g3077r-forged-detail
This is an option that is reliable and one that produces the claimed power - with our stainless steel turbine housing AR61, this will spool up more than fast enough for a streetable result, and still make the power you require.
@@TurboDirectSA no I thank you so much but why ar 61 why not 82 what will be the difference?
@@moiseiboianov7450 maybe just a little bit more responsive or better spool with smaller housing. im considering g30-770 to m52b28 too and will go with 0.82 ar housing if you someday want to go for 550hp then smaller housing wont do it because too much backpressure