best turbo for stock long block

[moyersgn]

I have a stock 87 gn with 69xxx miles. I want to know the best turbo for the combo I'm currenty installing.
60 lb inj, adj fuel reg, 304 with hot wire, art 3" dual exhaust, 3" gbody dp, 3" cold air kit. I'm looking at the 6262 and also the 5858 from pte. Ill get a converter to match which ever turbo i get. the car will be 100% street driven. want to have fun and smoke the tires from time to time. Also thinking about adding alky down the line. Any help will be appreciated. Thanks

 

[Mr.Spool]

street car,the alky and turn the boost up on the stock turbo,be prepared to upgrade the tranny.after that a 44/49 and the proper monitoring devices to tune the motor along with a 2800/3200 stall converter in the 10.5 inch range if you want to stay with the lockup.

 

[we4Mateo]

street car,the alky and turn the boost up on the stock turbo,be prepared to upgrade the tranny.after that a 44/49 and the proper monitoring devices to tune the motor along with a 2800/3200 stall converter in the 10.5 inch range if you want to stay with the lockup.

x2...100% street driving with unlimited burnout potential? Can't go wrong with a 44/49.

 

[hensleyt]

when did precision ditch the 5857?Never owned 44/49 I went for the new Tec wheels 11.88,112mph @24psi 18mpg

 

[John Wilde]

Precision was sourcing the 57 turbIne wheel, the 58 is theirs.
From what I have noticed they are doing a lot more stuff in house.
Based on your goals I would go with the 5858.

 

[jasjamz]

Precision was sourcing the 57 turbIne wheel, the 58 is theirs.
From what I have noticed they are doing a lot more stuff in house.
Based on your goals I would go with the 5858.

Agreed...5858

 

[we4Mateo]

The 5857 and now 5858 are just modern TE44's basically right? I've been thinking 6262 to upgrade my TE44 but I don't really need more turbo so it was recommended to go 5857 which is now 5858 from my understanding. I've never really gotten a straight answer, but what is the wheel in a TE44? TA49?

Thanks!

 

[jasjamz]

ITSNOTAGN said: ↑​

the 5857 IS a TE 44, just uses the new numbering system. Exact same turbo basically​

Hate to correct you, but that's not a true statement.

​

I'm pretty sure the OP was referring to our Billet 5857 turbo, which is completely different than the cast 5857 turbo. The cast 5857 does use the same compressor wheel as the older TE44 does, but it has the HP57 turbine wheel, instead of the T-31 turbine wheel.​

​

The TE44 uses a 58mm cast compressor wheel, and the T-31 turbine wheel. This turbine wheel measures 64.9mm inducer and 56.5mm excuder.​

Compressor wheel measures 58mm inducer and 74mm exducer.​

​

Our Billet 5857 uses our CEA billet compressor wheel that does have a 58mm inducer and 76mm exducer. HP57 turbine wheel measures 64.8mm inducer and 56.5mm exducer. It is a more efficient design than the older T-31 turbine wheel and spool up is faster.​

​

The TE-44 was rated to support 565 flywheel hp when maxed out and the Billet 5857 is rated to support 605 flywheel hp when maxed out.​

​

​

So, just to review:​

Cast 5857 = same cast compressor wheel as the TE-44 and HP57 turbine wheel. Rated to support 570 flywheel hp when maxed out. ​

​

TE-44 = cast 58mm compressor wheel and a Garrett T-31 turbine wheel. Rated to support 565 flywheel hp when maxed out. ​

​

​

Billet 5857 = Billet CEA 58mm compressor wheel and the HP57 turbine wheel. Rated to support 605 flywheel hp when maxed out.​

​

​

Hope this helps.​

​

Patrick Rubio​

 

[bison]

The 5857/58 has a lot more potential on the hot side. The hp ratings are a little optimistic on these low revving ohv engines though. Probably because it's used most often as a stock replacement with stock heads and cam.

 

[we4Mateo]

ITSNOTAGN said: ↑​

the 5857 IS a TE 44, just uses the new numbering system. Exact same turbo basically​

Hate to correct you, but that's not a true statement.

​

I'm pretty sure the OP was referring to our Billet 5857 turbo, which is completely different than the cast 5857 turbo. The cast 5857 does use the same compressor wheel as the older TE44 does, but it has the HP57 turbine wheel, instead of the T-31 turbine wheel.​

​

The TE44 uses a 58mm cast compressor wheel, and the T-31 turbine wheel. This turbine wheel measures 64.9mm inducer and 56.5mm excuder.​

Compressor wheel measures 58mm inducer and 74mm exducer.​

​

Our Billet 5857 uses our CEA billet compressor wheel that does have a 58mm inducer and 76mm exducer. HP57 turbine wheel measures 64.8mm inducer and 56.5mm exducer. It is a more efficient design than the older T-31 turbine wheel and spool up is faster.​

​

The TE-44 was rated to support 565 flywheel hp when maxed out and the Billet 5857 is rated to support 605 flywheel hp when maxed out.​

​

​

So, just to review:​

Cast 5857 = same cast compressor wheel as the TE-44 and HP57 turbine wheel. Rated to support 570 flywheel hp when maxed out. ​

​

TE-44 = cast 58mm compressor wheel and a Garrett T-31 turbine wheel. Rated to support 565 flywheel hp when maxed out. ​

​

​

Billet 5857 = Billet CEA 58mm compressor wheel and the HP57 turbine wheel. Rated to support 605 flywheel hp when maxed out.​

​

​

Hope this helps.​

​

Patrick Rubio​

This helps a lot. Thank you. Thank you too Bison. Instead of a 6262, do you think that the hot side efficiency of the new Billet 5857 would be enough to get me over 120mph vs my current TE44? Can I get these new wheels installed in my current housing or do I need a whole new turbo?

 

[we4Mateo]

Patrick. Are you not with Precision any more?

 

[bison]

This helps a lot. Thank you. Thank you too Bison. Instead of a 6262, do you think that the hot side efficiency of the new Billet 5857 would be enough to get me over 120mph vs my current TE44? Can I get these new wheels installed in my current housing or do I need a whole new turbo?

Tmk all the f1 small shaft stuff that precision used was sourced from t-netics exclusively for them. The housings are cut differently. You can't buy compressor wheels or turbines from precision either. Turbonetics wont even sell you a small shaft F1 even though their Name is on them. It's much more cost effective to sell your turbo and buy new. The 44 has been over 120 so the 57/58 should easily go further. If you can get the pressure ratio between 2.5 and 3:1 I'd expect that billet 5858 to support a lot more power than the old 44/49 turbos. Probably good for 60-65lbs/min if you have everything just right. No one I've seen that has used one of these yet is anywhere near that though. The wheel combo in the 44/49 turbos seems to be done around 50lbs/min. A lot of room for more power with the newer tech stuff even though we haven't seen it here yet.

 

[we4Mateo]

Tmk all the f1 small shaft stuff that precision used was sourced from t-netics exclusively for them. The housings are cut differently. You can't buy compressor wheels or turbines from precision either. Turbonetics wont even sell you a small shaft F1 even though their Name is on them. It's much more cost effective to sell your turbo and buy new. The 44 has been over 120 so the 57/58 should easily go further. If you can get the pressure ratio between 2.5 and 3:1 I'd expect that billet 5858 to support a lot more power than the old 44/49 turbos. Probably good for 60-65lbs/min if you have everything just right. No one I've seen that has used one of these yet is anywhere near that though. The wheel combo in the 44/49 turbos seems to be done around 50lbs/min. A lot of room for more power with the newer tech stuff even though we haven't seen it here yet.

I think I may have rethought my goals. I'd like to see what the new 5858 will do. I'm thinking of switching to the SP housing though. Any benefits to an S or SP cover vs a TE cover?

 

[we4Mateo]

Is there any difference in performance between the 5857 and the newer 5858? I know the turbine wheels are different but either should get me past my limits with my TE44 correct?

 

[bison]

Is there any difference in performance between the 5857 and the newer 5858? I know the turbine wheels are different but either should get me past my limits with my TE44 correct?

They should easily and willnperform better at higher pressure ratios than the 44/49 turbos do. Once you are going 117-118mph with a 44/49 you can benefit from more. I haven't seen it but I woulnt be surprised if the newer tech made 75whp than the older ones at 3:1 pressure ratio on a stock cammed/headed engine.

 

[we4Mateo]

They should easily and willnperform better at higher pressure ratios than the 44/49 turbos do. Once you are going 117-118mph with a 44/49 you can benefit from more. I haven't seen it but I woulnt be surprised if the newer tech made 75whp than the older ones at 3:1 pressure ratio on a stock cammed/headed engine.

Thanks. It seems the 5857s are still available and a little cheaper than the 5858s. I'm sure they're trying to get rid of the old stock so I think I'll get a 5857 and see what the improvement is over my TE44. I'm going to run the TE44 at 25psi with the new swaybar and CAS V4 in place first though so I have a good baseline before changing the turbo. If my 44 on pump and alky at 25psi gets me to 120mph though, I think I'll leave well enough alone until I wear it out. That's probably just wishful thinking though. Thanks again for all your help.

 

[bison]

Thanks. It seems the 5857s are still available and a little cheaper than the 5858s. I'm sure they're trying to get rid of the old stock so I think I'll get a 5857 and see what the improvement is over my TE44. I'm going to run the TE44 at 25psi with the new swaybar and CAS V4 in place first though so I have a good baseline before changing the turbo. If my 44 on pump and alky at 25psi gets me to 120mph though, I think I'll leave well enough alone until I wear it out. That's probably just wishful thinking though. Thanks again for all your help.

I doubt you will see much difference if you back to back them at 25psi. especially if youre running a tall tire.

 

[we4Mateo]

I doubt you will see much difference if you back to back them at 25psi. especially if youre running a tall tire.

I run a 27.2" tire 255/60/15 MT. I assume you mean there won't be much difference between a 5857 and 5858 at 25psi? The 5857 better make more power at 25psi than my TE44 or this will be a waste of money. I'm going with the SP housing though too so I can take the damn tornado out of my intake. I have just a bit of part throttle surge at 10psi with alky spraying and could never tune it out. This should free up the intake and get rid of surge so it won't be a total waste.

They should easily and willnperform better at higher pressure ratios than the 44/49 turbos do. Once you are going 117-118mph with a 44/49 you can benefit from more. I haven't seen it but I woulnt be surprised if the newer tech made 75whp than the older ones at 3:1 pressure ratio on a stock cammed/headed engine.

I'm just looking for 20-30whp by switching to this turbo at 25psi. Sound reasonable? Also, I'm not monitoring exhaust pressure. I have port matched stock heads and the erson 208/208 but otherwise stock everything. What kind of exhaust pressures do you think I'm seeing with my TE44 now at 25psi? And the 5857 at 25psi? Any downside to the ported housings?

Thanks for everything.

 

[bison]

Your tires are more like 26". I never measured a set on the car but they are definitely shorter than you posted. There is e.t. In a taller tire on your combo. Based on your numbers you should pick up some power at 25psi. Hard to say how much. You highest ex pressure is around 55-60psi most likely at the end of your 118mph pass. Dropping rpm via taller tire will result in the engine spending more time around peak tq/power

 

[we4Mateo]

Your tires are more like 26". I never measured a set on the car but they are definitely shorter than you posted. There is e.t. In a taller tire on your combo. Based on your numbers you should pick up some power at 25psi. Hard to say how much. You highest ex pressure is around 55-60psi most likely at the end of your 118mph pass. Dropping rpm via taller tire will result in the engine spending more time around peak tq/power

I thought my 255/50/16s on my regular wheels were 26" and the Mickeys are def taller. I've been thinking of going to the 275/60/15s but I don't have launch issues now and I'd like to not roll the fender lip plus I use narrow stock ttype wheels for my DRs. With the converter locked, I'm running around 4600-4800rpm at the end of a run. I should try a taller tire though but I'd rather test them once before I buy. I'll try to borrow a set and see what that nets me too before changing the turbo. Appreciate all the advice.