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Decision needed by tonight!

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HRCEngineering

15+ Year Contributor
59
0
May 1, 2005
Kenosha, Wisconsin
Hey. First of all my setup is not up to date in my profile. im running 850s dsmlink 255 fmic etc. I need to make a quick decision as to which 50 trim to buy. I am deciding between AGP's RS49T and the SBR 50 trim. I hear good and bad things about every turbo i look into buying. my main concerns are 1) money, and 2) creep. im trying as hard as possible to go with a 38mm internal gate for the extra 125. ill run a street tune of ~20psi, but will run around 24 on certain occasions. how bad will if be if i decide to go internal as far as drivability? i know there are many factors and am aware of them, as well as im sure most anyone who can help me knows them to, hence i wont list these factors. thanks in advance. i need a decision quickly!!
 
I would get the one that has the largest availabe turbine housing.
 
The rs49t uses the bullseye turbine housing (which by word of mouth, they will not offer proof/data) that it is in the realm of .55AR. The G50 uses the SBR casted comp housing and turbine housing and they say it is a to4e/.63AR but I don't believe it. Both the G50/rs49t uses a turbonetics CHRA so they're almost equivelant to each other. I guess a difference would be that the rs49t comes with a polished compressor housing.

mitsu- our BB5031 uses a PTE mitsu turbine housing which is guessed to be between .48AR and .63AR. Alike other vendors, no one will tell me an exact AR. the BB version is a garrett BB CHRA, fyi.
 
Well I was going to say to stay away from the rs49T, as the turbonetics center section seems to be hit or miss (yes this could have been from install issues/user error, there is no real way to tell) but according to blcknspoOln, SBR uses the same center section. Since your not able to know the AR ratio of both these turbos, I guess the only differences would be the rs49t using a bullseyepower turbine housing and not being able to bolt up a factory heatshield, while the SBR one you can & which company you feel better dealing with as far as customer service, that is if you are going to purchase them from different vendors.
 
Jus tkeep in mind that wastegate actuator supplie with AGP turbos is junk. You'll be lucky if your flapper doesn't get stuck or travel's more the third way open. It gets worse with age too.
If you go with AGP, consider external WG.
 
im not the biggest fan of turbonetics...so i would try and find an option C. like maybe a 20g
 
i would still appreciate more input, thanks for the replies. im going with an external wg, so if anyone is selling an o2 setup for external gate, email or pm me. i would like to get the pte bb5031e but its 1050 bucks or so. im looking at the sbr 50 trim (SBR G50) for 700 bucks. what does everyone know about this turbo i may not know, or would be good to know? let me know what you think.
-Ray
 
sp0oln, do you recommend the g50? you didnt seem to have anything bad to comment about it in your writeup. just wondering, as i plan to purchase tomarrow. along with tial 38mm gate and rnr 2.5" external o2 setup. i hope she is a fun setup.
 
We had a non ballbearing new PTE 50 trim a year and a half ago and couldn't control knock with it. We had to throw race gas in as we couldn't even get a halfway decent tune at 20psi pump. I really liked the Buschur 20g. That seemed to spool quick and made some decent power. A local guy made 423 whp with it on 550's. I also have had good experience with the hahn super 20g. A few of us have passed one around and before I sold it, it had over 40,000 miles of beating on it and still worked really well.
 
If I could go back and do it over, the famous 20g would definitely be a choice also. It has been proven to run 11's for years now and makes great power with MHI quality. As for the G50, I didn't have any bad to say about it because there really wasn't anything wrong with it. As stated before, the fastest I've ever gone with that turbo was 106mph (lame) and the spoolup was average for a turbo that size. I don't want to steer you one way or the other, but the G50 will be good option for you at this point.

As for the GT32E, it was an option for me a while back also, but it seems that the GT32E is not as efficient as some of its similar variants. As proof, I have seen a car only log 34 lb/min @ 20 psi on a decent tune. Not good enough if you ask me.
 
blcknspo0ln said:
As for the GT32E, it was an option for me a while back also, but it seems that the GT32E is not as efficient as some of its similar variants. As proof, I have seen a car only log 34 lb/min @ 20 psi on a decent tune. Not good enough if you ask me.


OMG I hope that didn't have upgraded cams? I see that kind of airflow on my evoIII with slightly less boost & a stock 2g head. I defently wouldn't be impressed with those results for a turbo of that size. I thought they were supposed to flow more then a 50 trim, or is this only when you throw in some race fuel and crank up the boost?
 
HRCEngineering said:
i would still appreciate more input, thanks for the replies. im going with an external wg, so if anyone is selling an o2 setup for external gate, email or pm me. i would like to get the pte bb5031e but its 1050 bucks or so. im looking at the sbr 50 trim (SBR G50) for 700 bucks. what does everyone know about this turbo i may not know, or would be good to know? let me know what you think.
-Ray

Well I own the G50 and have for over 5 months now, daily driver GST 118k miles total.
Internally gated.
My intake and downpipe/cat are not upgraded so my spool up sucks :notgood: but thats why.
20psi by 4500 rpm.
normal driving I rarely see over 8psi.
for MY GST this slow spool is PERFECT (will be once I get the intake and exhaust opened up)
The old T25 was almost undriveable with instant boost.
The top end pulls into oblivion and then some and, I have NO porting of ANY kind anywhere.
No issues to date, holds boost fine minus my personal leaks. zero shaft play after 5k miles.

Glad I bought this turbo and SBR has been top notch answering all my issues over the phone. :dsm:

Edit: no dyno yet, but I run those ram air firebirds off the road and vett's don't leave me behind either, only moded lightening's and forced V8's put me down. Ive matched a lightening running 12.3 in the qtr so I figure im well into the 350ish range on hp.............. time+$= dyno someday
 
Ho0ked said:
Well I own the G50 and have for over 5 months now, daily driver GST 118k miles total.
Internally gated.
My intake and downpipe/cat are not upgraded so my spool up sucks :notgood: but thats why.
20psi by 4500 rpm.
normal driving I rarely see over 8psi.
for MY GST this slow spool is PERFECT (will be once I get the intake and exhaust opened up)
The old T25 was almost undriveable with instant boost.
The top end pulls into oblivion and then some and, I have NO porting of ANY kind anywhere.
No issues to date, holds boost fine minus my personal leaks. zero shaft play after 5k miles.

Glad I bought this turbo and SBR has been top notch answering all my issues over the phone. :dsm:

Edit: no dyno yet, but I run those ram air firebirds off the road and vett's don't leave me behind either, only moded lightening's and forced V8's put me down. Ive matched a lightening running 12.3 in the qtr so I figure im well into the 350ish range on hp.............. time+$= dyno someday

I highly doubt you are doing 12.3 on 20psi with that set-up.
 
not to put you down, but your post was fairly uniformative. it was pretty muched based off of bench racing. but thanks for the input. for you it sounds like you would benefit from my evoIII for sale. 300 bucks..everything you need with it. ;) good tune with 19 degrees timing at 7080rpm with 0.4 counts of knock for 60 rpms or so.

HOWEVER...

i placed my order with sbr today. i went with their g50 50trim turbo, 2.5 SS external dump with a 0.9 bar 38mm tial gate. matt told me since i was going external, it would take a few weeks to build and get out! he also said the o2 housing and gate would have to be fabbed up. oh well, all good things must wait. i hope its pretty wicked.


thanks for the input spo0ln!


BTW, i happen to own a 'firechicken' or whatever you call it. an o1 ws6 with afr heads and a 601/607 lift cam with 108lsa. however, when it was stock, im sure it would have gave you a rundown for your money!
 
HRCEngineering said:
BTW, i happen to own a 'firechicken' or whatever you call it. an o1 ws6 with afr heads and a 601/607 lift cam with 108lsa. however, when it was stock, im sure it would have gave you a rundown for your money!
Exactly.
 
v2ner said:
I highly doubt you are doing 12.3 on 20psi with that set-up.


I haven't been to the track with this car yet.
However the lightening was only able to pull about half a length on me, so I can hold him and he does have a timeslip for 12.3 :thumb:

Sorry if you don't like that, things happen :D

Ps. Ran him with 25psi not 20...........
 
HRCEngineering said:
not to put you down, but your post was fairly uniformative. it was pretty muched based off of bench racing. but thanks for the input. for you it sounds like you would benefit from my evoIII for sale. 300 bucks..everything you need with it. ;) good tune with 19 degrees timing at 7080rpm with 0.4 counts of knock for 60 rpms or so.

HOWEVER...

i placed my order with sbr today. i went with their g50 50trim turbo, 2.5 SS external dump with a 0.9 bar 38mm tial gate. matt told me since i was going external, it would take a few weeks to build and get out! he also said the o2 housing and gate would have to be fabbed up. oh well, all good things must wait. i hope its pretty wicked.


thanks for the input spo0ln!


BTW, i happen to own a 'firechicken' or whatever you call it. an o1 ws6 with afr heads and a 601/607 lift cam with 108lsa. however, when it was stock, im sure it would have gave you a rundown for your money!


Last time I try to give you some info :notgood:

Uninformative eh ? funny I don't see anyone else posting on this thread about OWNING a G50 and giving you figures WTF

I Don't get the bench racing statement, pretty sure I own and drive my car daily, but whatever.
And please, don't insult me with your evo III why would I step down LOL
I'm seeing sub 15 degrees timing across the board, and zero knock on 22 psi.

I eat domestics with bolt-ons after 2nd gear :cool:

Ps. the externall sounds good, enjoy. :dsm:
 
Yea, 25~27psi is more believable with a 50-trim. I thought you said you were doin 20psi? I did 11.8 on a Green @27psi. I don't know if you and the lightning launched though. BTW....50-trim's spool-up is definitely NOT slow. Good luck to all of you.
 
v2ner said:
Yea, 25~27psi is more believable with a 50-trim. I thought you said you were doin 20psi? I did 11.8 on a Green @27psi. I don't know if you and the lightning launched though. BTW....50-trim's spool-up is definitely NOT slow. Good luck to all of you.

The 20psi was a referance I hit 20 psi by 4500 rpm and then it climbs some more,I wasn't being specific on my psi. I ran him at 25psi roughly.

Yes we launched.

Normaly I run about 22-25 psi.
My spool is hella slow but as I said in my post my exhaust and intake are not fully upgraded yet.
Once those mods are done I expect to spool by like 4k I hope :thumb:
 
Yep, that's right. I saw 27psi @3700 RPMs in 3rd. Of course, with turbo back ex.
 
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