killerpenguin21

on a non honda project of mine, i have a top mount manifold that will allow a gt3071R with 2.75 inch compressor inlet to fit the allowed hood clearance.

im looking to run a PT6062 or 6262 at first look at my new setup.

are either of these close in size to the 3071, i know they flow like a 35r but how big are the housings? theres next to no info on precisions available online.

TheShodan

iTrader: (14)

No. neither of these turbos are even remotely close to what the GT3071R. The GT3071R is a turbo used on Honda engines and are known for their immediate torque under the powerband, quick response, and mid-level power (about 280whp-420whp) and is rated at about 48lbs/min. The 6262 and 6062 are Precision units that are for much higher levels of power. The size of its compressor wheel inducer about 15% larger than the GT3582R, and about 10% larger exducer than the GT3582R . The aerodynamic configuration of the 6262 is a bit improved to the GT35R, which makes them relatively responsive compared to one another. That is to say, though that their power range is was designed to target the high 400whp-700whp, For the B and K series engines, you're looking at a later powerband where maximum torque and power is past the 5000rpm range, which gives it a "lightswitch" characteristic in power. before 5000rpms on average, the engine will not be as responsive at all. above 5000rpms, hold onto your ***, as immediate torque steer and loss of traction will occur quickly, especially over 400whp.

For the 6262, the turbine wheel is about 12% larger than that of the GT3582R, which allows it to have more top end power than a GT35R.

Compressor
6262 - inducer=62mm
6062 - inducer=60mm
GT35 - inducer=61.4mm

Turbine wheel diameter
6262 - "about" 75mm (62mm exducer)
6062- same as 6262
GT35R - 74.2mm inducer(68mm exducer)

Housing A/R size is only relevant as to WHERE the peak powerband will be and some top end flow characteristics.

This all depends on what you're trying to do with the car.

killerpenguin21

thanks for all the info.

only thing is im only looking for info on the actual housing dimensions to see if i have space to even fit either of the turbos

for discussions sake tho, the setup im looking into is a twinscroll/divided housing setup on 2.0 or 2.3L motor (undecided so far), with hopefully a 9-9.5:1 cr. cams are 264's with 9.6mm lift.

at first glance say on the 2.0 which turbo would you use?

wantboost

iTrader: (2)

Find a good straight on shot of the compressor covers of the turbos you are considering. Find out the inlet and outlet sizes (o.d.) you can then use this info as a scale, so you can measure the compressor cover in the image with a ruler. I've done this many a time and its come out within and 1/8th to a 1/4... pretty close.

killerpenguin21

hm interesting thought, thanks

wantboost

iTrader: (2)

yea, it sounds kinda goofy, but one of my projects is in the same boat... twin turbo v6 with as much room underhood as a fat guy stuffed in a bathtub. So before I ordered anything I just did what I described and made a cardboard template of the compressor housing options to see if they would work.

Just a little bit of creativity

TheShodan

iTrader: (14)

Sounds like a 4G63 setup of some sort by your descriptions. As for which turbo, depends upon the purpose and what you're getting out of it. I love my smaller TME 10.5 turbo on my Evolution 8. But that's just me. you must figure out power level desired , purpose of the car, etc.

killerpenguin21

no its not a DSM i would never mess with those haha. its a euro actually.

a lot of people have started running holset hx35's and making 400whp on 2 liters with no issue. one drag racer (of 2) uses a holset super40 making ~600whp at altitude in denver.

the price point on holsets is awesome, my gripe with them is that you either make 400whp and have pretty useable power, or make over 600 and its barely useable, due to being at full power for about 1500rpms.

basically im after a turbo that can make 600whp if asked, but also has a powerband, since these motors really only like to see about 7500rpm max.

now i know this may not be possible, but what do you think?

ive never run a turbo bigger than a tdo4HL-18t on anything so its new territory for me.

wantboost

iTrader: (2)

volvo... busted

killerpenguin21

if it was a volvo, then yes busted...but its not

TheShodan

iTrader: (14)

Didn't say DSM, said Evolution (different class of car entirely, honestly..I'm glad I got rid of my DSM).

Anyway, unfortunately what you're asking for is what many here strive for all the time, because for some reason they MUST have the 600whp number, and only run 93 octane (wishful thinking) or E85 (possible) to do it, and still have a manageable powerband.

In order to come with something even CLOSE you can kiss anything in a TD04, TD05, and even TD06 good bye. You're going to have to go to universal housings with larger T04E and T04S (slightly larger than TD06) housings to come even close.

Holset HX and HY series are the only Holsets that can even come close to these levels because they were the only ones designed to run efficiently on gasoline applications. All the other H1Cs and the like were pretty much garbage.

What's the budget for the turbocharger? are you prepared to use universal housing sets outside of Holsets? If the answer is under $1000, then this will not happen for any new units. Be prepared to go 4 bolt exhaust housing external wastegate or v-band in order to do this.

Which volvo engine are you using? that will also help.

killerpenguin21

sorry i just read 4g63 and automatically thought plain old dsm not evo.

the only reason i said 600whp was due to the fact that the fastest stateside car so far has gone 11.33@126 on 540whp from a gt3071 .64 a/r with 276/10.4 cams. 50 more whp could put the car into the 10's.

like i said earlier, the hx35's are proving potent, but the t3 housing is killing them up top in my eyes.

budget...i dunno? if i find something that will work perfectly i will spend the money pretty much.

the manifold will be twinscroll with 38mm runners externally gated, so i think a T4 divided housing would work decently, but like i said, im still reading my turbo tech stuff since i stepped out of the all motor world after 4 years.

i just really like the precision billet stuff alot and was hoping to find something to run with from that line up.

oh and ITS NOT A VOLVO lol

TheShodan

iTrader: (14)

Again, it will help if we know what engine specifically, and what you're really trying to do here. A GT3071 is pretty small potatoes even in a T2 .64A/R, at less than 50lbs/min. If the person is doing that well with that housing and turbo, one really doesn't need that much more to get to your goal, so there's no need to overdo it, unless it is strictly a race application that has no street time. A T3 is different entirely. Start looking at the sizing differences between T2 flanging, T3 flanging, and T4 open and Divided housings.

killerpenguin21

the engine code is B204L

90x78 1985cc
32mm intake valves
29mm exhaust valves

you can check this out just for fun
http://www.stcf.net/Tribute_2x4.pdf

ill have to read up on the housing stuff more. i was reading up on the PT 5857 a bunch tonight, looks like that would spool nice but fall a tad short on power.

basically im being dumb and trying to go outside the box on this whole deal, on top of not immediately wanting to jump to a garrett GT series if there is a cheaper BETTER option i guess.

wantboost

iTrader: (2)

I've always wanted to tinker with saab's. I hear they can be loads of fun. Plus no one would ever expect a saab to walk off and leave them