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My Brain Hurts! Which 50 trim??

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SwitchSkier

SwitchSkier

15+ Year Contributor
172
0
Nov 24, 2005
Bellevue, Washington
Ok, i have been looking for which turbo to go with my setup for a while now. I cannot figure out what i want. So, please help me.

i will have
-3" custom eshaust
-walbro 255lph
-probably 750 injectors?
-dsmlink
-some fpr
-XSpower/SSautochrome ebay intercooler
-sbr cast mani, maybe tubular
im know i am forgetting stuff, but you get the idea. just basic supporting mods.


i want a 50 trim and is very streetable and reliable (it will be daily driven). i will be doing some road coarse lapping as well as some dragging for fun. so i want a turbo that is kind of in the middle in that respect. i want it to be great on pump gas, but still do well with the occational times i throw in some race gas at the track. i think i would feel better with an external wastegate, but i donno? If so, manifold, or O2 mount?

i want to see just below, or at 400awhp.

i will do some internal upgrades down the road. I dont need to now, right?

anything else you need to know to help me?
 
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Road race & drag race? You should think about a Ball bearing 50 trim or an Evo III 16G. I meant to say you won't see 400whp on an Evo III 16G though. I suggest you look into PTE's SCM5061RE here http://dsm.dejonpowerhouse.com/.

EDIT: I guess part of my post got deleted, damn touchpad on the laptop. Post corrected.
 
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I'd suggest external wastegate, manifold mount. Because it's a DD, I also suggest a cast manifold vs. a tubular. For this reason, I suggest getting the SBR cast manifold with the wastegate provision drilled. Then get a 38mm Tial wastegate, and get a muffler shop or someone make you a nice dump tube. Do NOT dump the ext. wastegate into the engine bay. Now, in terms of turbo, you're going to need a bolt-on if you go with the SBR manifold. I suggest just getting the cheapest one. SBR or Bullseyes are really cheap. The BB is up to you, but that's the set-up I'd go with.
 
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I have a 50 trim right now. If you want to race around and beat people on the street id recommend an Evo III 16G because it spools up faster. You did say you were going to do some track racing too though. If you want to see 400 awhp then id say 50 trim, if you want it purely for racing people then id go 16G. I have an external wastegate (Tial 38mm)
be sure you get that done up corectly. I had mine venting the hot gas onto my radiator... not good to say the least. You kinda have a goldilocks thing going on here. For street racing 16G, for track 50 trim, too bad they dont make something in between? hope this helped
 
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I have a AGP RS49 currently with 7,000 miles of hard driving and no shaft play. It was bootsed all the way to 30 psi and hit full boost 20psi by 3900rpm
 
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Bmxr152 said:
I have a AGP RS49 currently with 7,000 miles of hard driving and no shaft play. It was bootsed all the way to 30 psi and hit full boost 20psi by 3900rpm
Click to expand...


Me too... very nice turbo.
 
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I definitely think the PTE SCM5031RE would be a great choice. You'll notice more lag than the e316g but if you do a lot of driving in 3rd gear it really wont be that bad. Also it will be a great car to drag race in since you'll get the extra air flow. I had a PTE SCM5031e and I liked it a lot, it pulled very hard and I enjoyed it as my DD. Overall I think it would be a great turbo for street and track use.
 
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That j racing kit looks like a 15 dollar trip to the local auto store, minus the flame flange. You can get just the circle flange for dirt cheap at homedepot in the shower/bath handrail section.

If you want that power and spool, just get a evo 16g. But if you really want the "50trim" I recommend the RS49 like above. Local had that, it was plenty fun.
 
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Does anyone actually own this BB 50 trim? i'd love some real world idea of its pool up characteristics. I realize Dejon claims it spools at ~3100 (i think?) which sound very acceptable for this size of turbo and quite streetable, but is it really that good? Some EvoIII's don't spool till then so it just seems awfully optimistic.
 
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PieEyedPiper said:
Does anyone actually own this BB 50 trim? i'd love some real world idea of its pool up characteristics. I realize Dejon claims it spools at ~3100 (i think?) which sound very acceptable for this size of turbo and quite streetable, but is it really that good? Some EvoIII's don't spool till then so it just seems awfully optimistic.
Click to expand...

http://www.dsmtuners.com/forums/showthread.php?t=218036

blcknspo0ln said:
"I guess I can finally offer my insight on the BB50trim now that I have had more time tuning and playing with it. First, I have owned and boosted the e316G, SBR G50, and the PTE BB5031 all at 21 psi. Spoolup on the e316G hits quick and hits hard. I was able to reach 21 psi by 3500 rpm and she pulled all the way until redline without dropping any boost. I then proceded to switch to a dry SBR G50 (your standard 50 trim) and it packs a huge punch up top compared to the e316G. The spoolup was definitely noticeable compared to the 16G and I hit 21 psi by 4100 rpm (probably had to do with my rich tune also). low-end and mid-range power from the G50 versus the e316G is noticeable also. The e316G is perfect for fast spooling, quick power, and mid to high top end pull. Overall my experience with the G50 was OK to say the least. Now, moving onto the BB5031. First of all, I noticed an immediate difference in spoolup. With the G50, It was hard to build any boost at all while driving around town. With the BB5031, the sucker spooled just like an e316G. 21 psi is achieved by 3800 rpm and it pulls much harder (again probably the tune) than the G50/16G. Up top the turbo screams. With that in mind, I was able to achieve a trap speed of 106 with my G50 @ 21 psi on my first night ever on the track. I am going to the track on Friday and I am more than confident that I will be able to trap 110+. (cross your fingers for me). I will report back when I get back. Lastly, at a measly 16 psi (major problems with boost control, now fixed) I was able to put down 293 fwhp and 269 ft/lb of torque !!! I can't wait to go to the track and go back to the dyno to tune for 350+ fwhp.

I hope this helps.

*edit* Also, all 3 turbos were all ported and were internally gated. the e316G creeped from 21psi to 23 psi. The G50 creeped from 21 psi - 23 psi. The BB5031 spikes at 22 psi and settles to 21psi, rock solid boost after that until redline."
Click to expand...
 
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