twinturbogbody

Hey guys hello new member here was wondering if you guys had any input on these 2 turbos through my homework they are obviously different turbos but seem to be close in numbers. I've been retired for a few years and getting back into it. I currently run twin super T 76's now and looking to update,my motor is 427 cubic inches with eddlebrock 18 degree heads car made great power and got down the track and basically just looking to update my turbos no other changes I also currently have .96 housings. So that's about it any opinions on those 2 turbos would be greatly appreciated.

LS1NOVA

iTrader: (12)

Precision will tell you the 6870's will do the same power as the Turbonetics. I've never used them so I can't tell you but I do have a pair of the Turbonetics 7575's on a customers 427 LS and it is a beast. 1000whp on 17lbs and ran an 8.70 on 20lbs in a 3500lb car.

twinturbogbody

Thanks for the response it's greatly appreciated it's a tough call I hear they are both great turbos but 6870 has a more efficient wheel. I've only owned turbonetics turbos about 10 of them on different applications but I've also been out of it for about 6 years and I know the technology has changed. I will say those are great numbers out of the car you speak of though again thanks for the response how are the spool characteristics of that vehicle and what kind of tranny

stevieturbo

More important is what you intend to use them for ?

Do you need faster spooling units, do you need more or less power ? What do you need from a turbo ?

willizm

iTrader: (10)

The 6870 is a potent turbo in the supra world where spool comes on quick and holds power through redline making 1000whp on a 3L. I'd imagine in a twin configuration and 427ci it's going to spool nicely and make serious power. If it were me I'd seriously try the 6870's if the price is within your budget.

stevieturbo

If on a smaller budget I'd aim for some of the new BW SXE's assuming you've room for them, but the 6870 does look good, would be nice to see some comparisons for it against the EFR's

slowride

iTrader: (3)

Friends 6 speed iron 6.0l fc rx7 went 9.8@150 on a single Turbonetics 7575. You could also build a smaller Turbonetics turbo that would be more in line with the PTC like a billet 6968, etc for less coin. Turbonetics warranty is one year no fault so that's nice.

transam69230

iTrader: (49)

The warranty is what swayed me towards Turbonetics. Twin 75/75s, 427 Dart LS Next and I just went 8.53@168 at 3850 raceweight on 26.5lbs of boost and 14degrees of timing.

twinturbogbody

Thanks guys for the great responses car will be street driven a little bit but a track car the car has already been in the low 8's. I will say cost is not a factor and my choice will only be between a Precision or a Turbonetics my turbos are on center older Super T76's with .96 housings im basically looking to update and these 2 seem to be my best choices and definitely looking for some good spooling I take it these 2 turbos are pretty close ive heardthe 6870 can make 1100hp im kinda conservtive so I say 950 to 1000 thats just my business style im conservative Im just not sure what a 7575 puts out im sure they can both do the job I just would like to get a little more info on each leaning towards turbonetics

stevieturbo

A 6870 may make that number on a smaller engine at higher boost, on a much larger engine as twins I doubt they'd do 2200hp at low-medium boost.

Are you looking to make say 1500-1800hp ?

On a 427 I'd say they'd spool very well and make great power.

twinturbogbody

Thanks for the last response I believe I'm already somewhere in the 1500 to 1600 range I could be wrong though. What's caused me to do some homework is when I bought these turbos turbonetics told me they would make about 900 each today they say that number is more like 750 to 800 so I'm not happy and that's caused me to look at there competitor. I know technology changes I get it efficiency wheels etc. I would like to be in the 1800 to 2000 range. I know before this setup the car had twin 72's and made great power 1250 rwhp and 1200 torque at 25lbs of boost. I sold the 72's put on 76's and car never went back to the track or dyno but man what a difference didn't spool as quick as the 72's but power was in the seat of your pants difference I actually did go to dyno one day on pump gas and I believe the number was like almost i believe 900 rwhp at like 14lbs of boost didn't have any c16 so left it there I run a turbo 400 with gear vendors again thanks for your response

LS1NOVA

iTrader: (12)

Now that we know a little more about your deal, Borg S476R's with a T4 turbine housing would be my choice.

twinturbogbody

I'm not really up to speed with the Borg Warner stuff I will admit that but since I have got back into this I see they are a huge player now when I was doing this 15 years ago they were Obviously a big company but we're not in this world even when I got out of it 6 years ago it was all turbonetics and precision but I know some people with some Borg 88's and they love them so thanks I will dig a little into the model you mentioned

slowride

iTrader: (3)

BW stuff is so popular as they have large efficient housings and vendors are stuffing them with some sweet billet wheels, etc. If you have the space for them it opens up a lot of exhaust housing/wheel combos to dial in what you would like.

In the turbonetics t series 7575 I would guess you could pick up 200-300 hp over what you have and it drops right in place, but I'm not sure that would be enough for you either. I haven't see these in twin configuration really pushed hard. You might need to look at the newer mid frame 8382, etc. A lot of this depends on if you NEED it to just drop in and go or require some fab work.

I'm not sure if anyone has compared the PTE 7675 vs the gen 2 6870, but the 7675 might get it done for you also.

stevieturbo

They make a load of great stuff now, and no need to have others put billet wheels into units they build, when BW do them themselves.


http://www.agpturbo.com/s300sx-e-series/

twinturbogbody

Thanks for the Borg Warner video i see they have some quality stuff i would never doubt that company the stuff seems to be priced right also thank's again would love to learn a little more about i believe he said there efr line

twinturbogbody

Did a lot of homework i think the mid frame 75/75 turbonetics is the one for me with the 1.0 housing i thank you guy's for all your input even though it may change by tomorrow lmao