bb6guy

ok... i need your knowledge and experience guys.

bb6guy

if anything, what turbo do you guys suggest?? i want to make atleast 300whp on low boost.

is this turbo in the link too big? do i need a smaller one?

Thanks

bb6guy

BUMP!!

da_dude

Get a t3/t4 50 trim.

LightningTeg

Your not going to make 300 on any reasonably sized turbo for that motor without cams or headwork @ 10-12psi.

bb6guy

isnt the T3 42/48 a 50 trim? thats what im running right now. i want to go bigger!!

zaccers

With a very similar setup, I'm making 308whp.




...at 18psi. Bone stock from head to pan, blox cast log mani, Garrett T3/T04E .57 trim, dsm 450cc, tuned on Crome.

1DayIllBFast

the turbo you have is fine all you need to do is up the boost some man. you dont want to big of a turbo on your stock LS because it will lag big time and nobody wants that. Stay with what you got save your money get tuned on hondata and turn it up.

TheShodan

iTrader: (14)

I'd say the 50 trim is a bit nicer than some Saab turbo. the T3/60-1 is going to be hurt you a lot.

Silva Bullit DC4

Its a 60 trim in a straight t3 platform.

T3/T04e 50 trim .63 a/r FTW. You'll be right in the sweet spot of its efficiency range at that power range (300 whp), and its very responsive as far as reaching maximum pressure is concerned. I had a standard B cover Borg Warner on my stock LS for a year (with the stage 3 wheel option done by Shodan), and I loved it.

bb6guy

Hmm..so your saying that i have a 60 trim wheel in a T3 platform with fairly small AR's. so your saying i should just swap out my housings to a .60/.63??

How much boost were you pushing?
can you provide me with links of which turbo you recommend?

you guys all have helpful info for me. thanks!

SIXTY-1HATCH

Ive never ran a turbo that small, but I would think a 50 trim would max out around 400. I personally ran a t3/t4 57trim on my bone stock ls motor and it was PERFECT for that motor, built or not. I think they are good for around 450is hp, but that thing hit FULL boost around 3-3500 rpms, and blew the doors off. Actually that car made 316hp and 272tq on 13psi 93 oct, so my money would be on the 57 trim since those motors don't rev out much. If your looking for alittle more, then Id say your on the right path. I just sold my t360-1 and that was a badass turbo as well. Not too sure how it will work on the ls, but my gsr was full boostin around 4-4500. They are good for about 550hp, and really affordable. The efficiency range is 15-25psi, so you could probally swing 300hp on like 12-15 psi or so. Either way is a good one, but if you want a faster spool, I would go with the 57 trim. I honestly miss that turbo for a street car. Being a stock ls mine didn't have too much top end, but Ill be damned if that thing didn't get soooo far out on other cars in 2nd gear. I turned the boost up to about 18ish psi, and it turned into a highway car, spinning through 3rd, it was BADASS. YOU WILL NOT REGRET the 57 trim. You just need to figure out if your ever going to build it or shoot for more hp.

Also, from experience as well, 3-350hp seemed to be the limit with stock cast pistons. The ringlands don't seem to like much more than that.

Good luck, I'm sure youll make the right decision for what your doin...

Silva Bullit DC4

It made 301 whp @ 16 psi. I had a bit of a restriction due to my DP & exhaust (2.5 in. at the time), so it may have made that power at less boost with a 3 in. DP & exhaust.

I would recommend the Garrett or Precision units over the Borg Warners as far as standard T3/T04's are concerned. The Borgs come with a stage 5 P-trim turbine exh. wheel, which will hurt spool time as opposed to the smaller stage 3 wheel that comes standard on its Garretts and Precision counterparts.

bb6guy

WOW!! my hat down to you my friend! you are well informed. thank you for the input! i think i might go with a 60trim or 63trim, or 60-1

heres a link of some turbos. the ones im interested in is at the bottom.
http://www.blaastperformance.com/index.php

what you guys think?

bb6guy

actually click on the link, then click on turbochargers on the left side of the screen, then click in the middle of the page on the one that says 350-500hp. then scroll down.

thanks

TheShodan

iTrader: (14)

You can have 20 different turbos with a 50 "Trim" difference. Its just the measure between the inducer and exducer of a given compressor wheel. What we are suggesting is not just a housing change, but a completely different unit than the Saab/Volvo unit. The 50 trim I am suggesting is using a 75mm exducer (wheel diameter) with a 53mm inducer wheel, using a Stage 3 2.559" exducer wheel in a .63A/R. THAT is what is considered the standard garrett T3/T04E 50 trim (though you can change compressor housing to make it fit better for your LS) Your saab/volvo is MUCH smaller than that, so PSI numbers are not going to be relevant as they are completely different turbochagers.

You also need to state a budget to spend and what TYPE of housing you have (4 bolt, Ford 5 bolt, or volvo 5 bolt,) chances are regardless, you're going to need to alter the downpipe a bit.

bb6guy

thanks for the info TheShodan!!
should i get a oil restrictor for the new turbo that im going to buy?

TheShodan

iTrader: (14)

If you're purchasing from Blaast, I would have one ready, but I cannot say for sure, as I only know they are not within Garrett or borg-warner oil pressurizing standards. (not saying its a chinese turbo that's crap, i'm simply saying I am not aware of their specifications, so they may require one). that being said, I would think that one is not necessary if they are similar to those standards similar to Garrett and Borg-Warner using a -3AN line from the oil sending unit. But be safe and Check your oil pressure at the line, and make sure that there were not "oil pump modifications" or "oil pick-up" modifications in the stock engine to be absolutely sure. If you have connected the downpipe, driven the car, and see wet oil in the back of the housing (Signs are from excessive oil smoke through the DP and exhaust), then you can use use a restrictor, but make sure it is no less than 0.060" opening. Don't just purchase "a restrictor" without knowing what the size is.