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Discussion Starter · #1 · (Edited)
What do you guys think? I know what they're capable of, but I want to hear what you guys think would be a better turbo for a 320whp to 340whp car. My motor WILL have IE rods. Lets hear it peeps :) Also I don't care about the difference in price, only the turbo itself. :thumbup:


*another update... Car is now DBB 50 Trim'd (1-8-2013) Just a couple new pics







*edit* garrett journal bearing 50 trim in pics below. (2-12-2011)


















 

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2871 for that range. Get the smallest turbo for the job....that way you actually have a decent powerband and transient response. If that 320hp goal ever moves up to 400...then the 50 trim is the better bet.
 

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FV-QR

I dont think a 50trim will make 400whp really easily, I guess he didnt specify whp or bhp but anyway..
if you have rods just do the 2871r, spools and respool is a lot faster...
the 50trim is for people running stock bottom ends who want ~300whp (or for the more brave ones 350+)
 

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FV-QR

hahaha.. he does have a 01 jetta. we can hope its 01.5, thats when they switched to wideband 02 sensors.
if thats the case then yea, 400 is achievable for sure
 

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a 50trim with a 630cc file is mad fun and a bit brutal..just how we like it

you`l love it..
Go for the 63a/r housing, it wil save you some fuel when/if DD driven.. http://****************.com/smile/emthup.gif

Modified by Pisko at 5:22 AM 9-12-2009


Modified by Pisko at 5:22 AM 9-12-2009
 

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Re: (Pisko)

I would say for your power goals and a enough overhead to get close to or at 400whp, the 2871r is perfect. There's only like 4lbs/min on the comp that separates these turbos. If you develop that itch later on, the upgrade route of the 50trim will be greater (I'm talking 400+whp). But its always at the expense of response. If this is your daily driver, I'd say 71R all the way.


Modified by [email protected] at 5:39 AM 9-12-2009
 

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Discussion Starter · #9 ·
Re: FV-QR (screwball)

Quote, originally posted by screwball »
DBB 50 trim

I can't find much info on them on the vortex
The car is my daily driver, I commute about 50 miles round trip to work everyday. I do think I'll be very satisfied with 320whp, but if i do get the itch to bump it up a bit i still think either turbo can support 375whp. I'm not trying to build a monster, just a beast haha. Thanks for the info guys, keep it coming.
 

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Discussion Starter · #11 ·
Re: FV-QR (The*Fall*Guy)

I've read those are very unbalanced turbos and best suited for high rpm applications. I've seen people say bad things about them in the SR20 forums way back in the day when i had a G20 w/a det swap
 

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Re: FV-QR (The*Fall*Guy)

Quote, originally posted by The*Fall*Guy »
I've heard the same thing.. Although one would assume that the spool would be better than a 30r or a 50trim..

But for the price you're paying for spool, you won't make much power.
There's a reason people don't run 2876's, 3082's, etc.
 

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Re: FV-QR (The*Fall*Guy)

Quote, originally posted by The*Fall*Guy »
Sure.. But wouldn't it still offer say 50-75 whp more than a 2871? Just curious..

I used a 2876r back in '04. It made 420whp but surged a bit and wasnt as responsive as you would think.
 

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Discussion Starter · #16 ·
Another question i had was whats the max safe psi for each of these turbos. on dyno day i may want to run 25 to 30 psi. Can these turbos pump out those psi numbers at the track or dyno without damage?
 

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Re: (Big_Tom)

Quote, originally posted by Big_Tom »
Another question i had was whats the max safe psi for each of these turbos. on dyno day i may want to run 25 to 30 psi. Can these turbos pump out those psi numbers at the track or dyno without damage?

Well, the journal bearing system w/ the 50trim comp would require unsafe shaft speeds to achieve boost levels over 25psi. On a ball bearing, no problem.
2871r runs out of its efficiency range after around 27psi.
 

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Discussion Starter · #18 ·
Re: ([email protected])

Quote, originally posted by [email protected] »

Well, the journal bearing system w/ the 50trim comp would require unsafe shaft speeds to achieve boost levels over 25psi. On a ball bearing, no problem.
2871r runs out of its efficiency range after around 27psi.

That's exactly what i wanted to know. Also, what type of psi will they hold revving to 7k or so? Is the 2871R big enough to hold 20+ psi up there?
 

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Re: (Big_Tom)

Quote, originally posted by Big_Tom »

That's exactly what i wanted to know. Also, what type of psi will they hold revving to 7k or so? Is the 2871R big enough to hold 20+ psi up there?

Here is my 3071r WG kit. 2871r should be pretty similiar. Only pushing to 6.5k (22psi / 350+whp). Holds up decently
 

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Get a 3071r spools around 3200 and makes 300whp on low boost. when you want more power. turn ur boost controller up.... my .02 I have a 3071r so if you want a video of spool up let me know http://****************.com/smile/emthup.gif
 
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