better than the Disco Potato [Archive] - SR20 Forum

: better than the Disco Potato


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ITR_KILLR
07-15-2002, 07:03 PM
does anybody have an INCON SYSTEMS GTBB3037 turbo or know anything about them? Andreas says they outperform the DP and he's selling them for the same price, but i have never heard of them.

Andreas Miko
07-15-2002, 08:06 PM
My word is not good enough for you. I am far from being a liar and I did not say you said I was a liar but GEEZ give me some credit. I find no mater what I say or do, I get questioned more than anybody else. The guy with maybe the most experince on the SR20DE gets worked over the most for no reason, DAM! This is not a shot at you but I guess my reputation is not good enough for you.

I hope you find that I am not bullshiting you and you get the turbo from me, but DAM!

I can even tell you that the GTBB37 turbo has a far superior turbine housing than the turbo on the Disco Potatoe. The turbo has what is called a DIVORCED WASTEGATE, which seperates the wastegate discharge from the turbine wheel air flow which results in more top end HP. Also the turbine housing is far superior to the HKS turbine housings also. Just check with the turbo man himself Rob Cadle, better known as ClassicSE-R.

SENTRA1909
07-15-2002, 08:16 PM
for what it is worth I trust your word. I have not talked to you personally, but I have read many of your posts. I have read many post of others that will stand by you on anything you say, because you only say what you would stake your own rep. on.

reputation is the only thing that one can go by on the internet.
( other then the people that you know)

TREYDEE
07-15-2002, 08:24 PM
Yo I just got off the phone with him,trust me this knows his
shit,I'm am glad he's only 25 minutes away from me,cause when I hit the lottery he's build'in my turbo/nos setup,Believe me!!!!!!!!

ITR_KILLR
07-15-2002, 08:27 PM
in no way did i ever mean that i didn't trust your word, i promise. i have gone by what you've said in many posts. i just wondered if anybody else had the turbo. thats all

unlucky
07-16-2002, 01:40 AM
I'm sure he meant no insult to you Andreas... People trust you man...
Travis

bigtom
07-16-2002, 04:50 AM
who's andreas??????


hahaha

muleman
07-16-2002, 07:08 AM
He is this guy that live up there in the sky with god :p p.s. that is one bad ass turbo.

Andreas Miko
07-16-2002, 07:12 AM
Jason at JGY customs got one of the INCON GTBB37 Turbos. Check him and see what he has to say about the turbo.

NX$paniard
07-16-2002, 09:58 AM
Whats the difference between the HKS GT3037 and this INCON GTBB37??

as I recall Rob Cadle recommended the HKS GT3037 in some post somewhere, Ive never heard of the INCON one.... I belive Rob said somethin about the 52T .73 A/R Dont quote me but i think thats the one he said was more efficient...please correct me if I am wrong......but anyhow, whats the difference???

JayLew
07-16-2002, 11:23 AM
Originally posted by NX$paniard
Whats the difference between the HKS GT3037 and this INCON GTBB37??
Somebody correct me if Im wrong.....

Im pretty sure the HKS GT3037 needs an external wastegate, the last price I saw on it was $1700 (jspec.com), Not including a wastegate or plumbing.

The one Dre is talking about, if its the one I saw a couple weeks ago when I was down in Miami, has an internal wastegate and can bolt up to your stock manifold, I think youll need a new down pipe though. He said it could produce around 350hp I forget at what PSI though. Considering you dont need a lot of extra plumbing or a wastegate, it seems like a good deal vs. HKS's turbo.

ClassicSE-R
07-16-2002, 11:31 AM
Couple of facts:

The Incon turbo does not have the same turbine housing as the HKS GT3037. The Incon turbos have a Garrett-made turbine housing that is based on the T-3 design. Andreas is correct: is is set up for an external wastegate only. It uses a 4-bolt outlet flange, which is different from the 'typical' Turbonetics-style T-3 outlet.

The Incon turbo also does not use the same compressor wheel as the GT3037. The HKS GT3037 uses the newer BCI-18C compressor wheel, while the Incon turbo uses a much older BCI-2 design. It is very disappointing to me that this turbo uses the older wheel, as much better performing wheels are available from Garrett. However, I didn't spec this turbo.

Because of the difference in compressor efficiency, the HKS GT3037 will outperform this Incon turbo, I have no question about that. I have not done back-to-back testing on these turbos, so please don't PM me and ask me how much of a difference it will make. This is based on my opinion and judgement based on the maps I have seen.

As far as being better than the Disco Potato turbo, the Incon turbo and/or the GT3037 will support significantly more power. The Disco Potato turbo isn't the power-producing champ. However, if your goals are 300 whp or less, I will stand by my statement that you will not find a turbo that has better drivability or response than the D/P turbo.

NX$paniard
07-16-2002, 01:18 PM
That's all i wanted/needed to hear!! ThaNX!!

Andreas Miko
07-16-2002, 02:37 PM
Rob the Compressor wheel of the GTBB37 is identical to the HKS GT3037 both wheels are 52 trim wheels, some HKS GT3037 compressor wheels are 56 trim. The turbine wheel of the HKS GT3037 is 55 x 60 where the incon is a slight cut down version of the same wheel 53.5 x 56.5. What make the incon GTBB37 turbo better on the rear over the HKS GT3037 and the D/P turbo is the turbine housing which comes with a Divorced wastegate setup, which seperated the wastegate air flow from the turbine airflow. As Rob knows already this causes the turbo to be more efficent in the higher boost level and RPM levels. I just did a test from just changing the turbine housing from a standard T28 rear to the Incon rear turbine housiong, no other changes were made and we made 50 more HP at 7500 RPMs . I am sure that Rob would be better off explaining these facts. This turbo is also more compact than the HKS GT3037 turbo.

I will try and get some Pics up of the Turbo and also some pics of a smaller version of the Turbos power graph,

ITR_KILLR
07-16-2002, 05:55 PM
I'm planning on gettin the INCON GTBB3037 from andreas in the near future. I'll let everyone know what i think about it

ClassicSE-R
07-16-2002, 06:12 PM
Originally posted by Andreas Miko
Rob the Compressor wheel of the GTBB37 is identical to the HKS GT3037 both wheels are 52 trim wheels, some HKS GT3037 compressor wheels are 56 trim.


That is what I thought at first, too. Both turbos use the same diameter and trim compressor wheels, but they are fundamentally different aerodynamic designs. The GTBB37 uses an old-school 'BCI-2' compressor wheel design. This is basically a 76.2mm version of the T-04B wheel. It is a 52 trim 60-1. You can tell this wheel because it has 7 full blades and 7 splitter blades. This wheel was production released in 1976. Seriously, no lie. I just looked up the production drawing for this wheel, and it was designed 26 years ago. I pulled some maps for it, and it has a peak efficiency of only 74% at a lowly 1.8 pressure ratio (about 12 psi). At 20 psi on an SR20, this compressor only has about a 70% efficiency.

The HKS GT3037 uses a BCI-18 compressor wheel. This has 6 full blades and 6 splitter blades. This wheel design is much more modern, only about 10 years old. It has been the bread and butter of Garrett's commercial diesel business until the last two years or so. This has about a 77% peak efficiency and is about 75% efficient up at 20 psi. This will make a big reduction in backpressure on the engine. This wheel is more optimized for performance in the 14-25 psi range.... right where you want to run a big turbo on a small motor.


The turbine wheel of the HKS GT3037 is 55 x 60 where the incon is a slight cut down version of the same wheel 53.5 x 56.5.


Right. This means that the INCON wheel has a little less flow than the HKS wheel, and also that it has a little worse efficiency because it is running a larger turbine-to-compressor speed mis-match. The INCON wheel isn't much worse than the HKS wheel, but it is worse.


What make the incon GTBB37 turbo better on the rear over the HKS GT3037 and the D/P turbo is the turbine housing which comes with a Divorced wastegate setup, which seperated the wastegate air flow from the turbine airflow.


The HKS GT3037 doesn't have an internal wastegate at all. This is best for performance because there is no port in the turbine housing inlet for the wastegate. The oulet is also cleaner.

The D/P turbo has a conventional turbine discharge (internal wastegate, no divider wall). This isn't as good, but like I've always said, the D/P turbo isn't for making big-time power, it is for ultimate drivability at the 300 whp and less level.



This turbo is also more compact than the HKS GT3037 turbo.


Maybe a little, especially since it is internall wastegated, but the GT3037 is a pretty compact unit, and IMO an external wastegate is needed to make big power anyway.

The HKS GT3037 will support more power than the INCON turbo with better drivability. The D/P won't support as much power, but will have much better durability and fits a lot better.

Rob

T4 Primera
12-18-2003, 07:18 AM
WTF is a disco potato?

GINGA
12-18-2003, 07:53 AM
Is there a website for the INCON turbos? or wheres the best place to get them from?

Justin
12-18-2003, 10:27 AM
WTF is a disco potato?


LOL Do some searches on the forum. It is a turbo that was made to have minimal lag, but pretty good top end. You must be like WTF when you see everyone talking about the D/P huh?

GINGA
12-18-2003, 10:45 AM
http://www.atpturbo.com/root/turbopiping/dynodata/audib6.htm