6870 precision turbo on a stage 2 any one?

[nat86]

What blade would you recommend for my ptc

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[sackracing]

17 should be ok

 

[forcefed3.8's]

I would get it going and make a decision to swap of needed. Your engine might not want the rpm.

 

[nat86]

time to get busy with my downpipe and header can't believe the size difference but according to precision they said there's only 300 rpm difference I don't know man[emoji15] but boy is it pretty

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[Mr.Spool]

Wow that's a huge difference between the 6870 and the 6766 .81s starting at 30psi, didn't expect it to be that much.
Back pressure problems maybe?

that's a graph with data off a supra motor where the engine could use more than a 6766 could deliver.the 6870 spooled within 70rpm of the 6766 on that car.

 

[V6sleeper]

that's a graph with data off a supra motor where the engine could use more than a 6766 could deliver.the 6870 spooled within 70rpm of the 6766 on that car.

Gotcha

 

[nat86]

Going over to my friends shop he has a 7 sec eagle talon running the new Precision V band exhaust housing the one that I bought he says it's Spools way faster then the old school 4 bolt 96 housing .I thought I would pass that along to you guys. There's really not a whole lot of information about this since its so new.

 

[nat86]

Ok so I called up sound performance there the ones that did the testing on the Toyota Supra With the 6870 and different exhaust housings. They told me they put a 3 bolt 6870 on a grandnational he said that the exhaust back pressure was so much the owner wanted to go with a 96 housing. I would like to know more about the grandnational so I will probably call them back I just thought I would pass this on to my fellow Buick friends

 

[Mr.Spool]

They told me they put a 3 bolt 6870 on a grandnational he said that the exhaust back pressure was so much the owner wanted to go with a 96 housing.

at what power level?

 

[nat86]

at what power level?

I will find out more tomorrow. I wish I had more time to talk to him but I Was needed back in the shop

 

[forcefed3.8's]

The 3 bolt cant be that bad, Richie just went 8.68@154.6 with one.

 

[sackracing]

Richie is doing something right with his combo. I make a ton of backpressure with that turbo, I haven't been able to get it over 30 pounds of boost yet.

 

[forcefed3.8's]

My concern on my car is the e85 making even more back pressure. On top of that I do have extra cubes.

 

[BEATAV8]

Probably the same car I posted about

 

[nat86]

My concern on my car is the e85 making even more back pressure. On top of that I do have extra cubes.

The extra cubes would make it worse Right.

 

[forcefed3.8's]

Potentially.

 

[nat86]

since I'm waiting for my TA stroker i decided to use my decorative engine in my shop that is just for looks for my mockup for the downpipe and I can start on my EGT probes and I had to weld the V band flanges on the header and downpipe .the downpipe is a GN 1 performance 3 1/2 I had to cut off the flange and weld the V band flange on. same with the 3 bolt on the headers .I still need to weld the stainless steel pipe coming from the header up to the external wastegate but I'm going to wait till the engine is in the car too fab that up. When all is done time for polishing and powder coating

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[Boost231]

Housing looks killer

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[nat86]

Housing looks killer

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Thanks man

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[Boost231]

Alot better looking then my 4 bolt housing which is the same old look.

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