Safe HP/TQ on stock engine

z6cyl · Oct 26, 2015

Do we know or have a general idea of the safe HP/TQ on the stock engine? I know MAP is hitting like 500hp, but is this reliably safe to any extent?

Tamadrummer88 · Oct 26, 2015

I think its been said already, but 350RWHP and about 400RWTQ is the limit for the stock turbo.

z6cyl · Oct 26, 2015

Tamadrummer88 said:
I think its been said already, but 350RWHP and about 400RWTQ is the limit for the stock turbo.

I don't care about the stock turbo.

I care about the engine, the block, rods, pistons etc. What is the limit for the engine.

Tamadrummer88 · Oct 26, 2015

z6cyl said:
I don't care about the stock turbo.

I care about the engine, the block, rods, pistons etc. What is the limit for the engine.

The stock turbo will restrict you before you can even reach the limit of the motor.

Its about 425/410.

z6cyl · Oct 26, 2015

Tamadrummer88 said:
The stock turbo will restrict you before you can even reach the limit for the motor.

Its about 450/450, give or take 25/25 or so.

Yes... I am aware of that.

Tune+ · Oct 26, 2015

The limit of the turbo is 380whp, that is what I push them to if customers request on racegas. I have made 500whp/465wtq with the stock motor with no problems but it is not recommended. The furthest I will push a stock block for a customer with a big turbo kit is 450whp/400wtq.

z6cyl · Oct 26, 2015

Tune+ said:
The limit of the turbo is 380whp, that is what I push them to if customers request on racegas. I have made 500whp/465wtq with the stock motor with no problems but it is not recommended. The furthest I will push a stock block for a customer with a big turbo kit is 450whp/400wtq.

Adam,

Would you say the engine longevity at that 450/400 is safe for long term or would you keep it lower say under 400 to maintain stock like engine longevity?

ThirtyThreePointThree · Oct 26, 2015

Tune+ said:
The furthest I will push a stock block for a customer with a big turbo kit is 450whp/400wtq.

Sounds coincidentally close to the numbers expected from VTTs stage II turbo upgrade with FBO and e30 :-) like a match made in heaven.

Can't wait!

Tune+ · Oct 26, 2015

z6cyl said:
Adam,

Would you say the engine longevity at that 450/400 is safe for long term or would you keep it lower say under 400 to maintain stock like engine longevity?

I don't anticipate any problems in the long run.

MAPerformance · Oct 26, 2015

The quality of the tune is going to become more and more critical as the power levels go up... longevity definitely factors into that equation as well. Assuming you have a good tune under your belt, 450HP has been a threshold we have been recommending for stock block

Brad · Oct 26, 2015

Tune+ said:
I don't anticipate any problems in the long run.

I will gladly be a test subject.

Tune+ · Oct 26, 2015

Brad said:
I will gladly be a test subject.

Put some race gas in your car.

richard0ne · Nov 3, 2015

Adam, you don't use the SCT X4 handheld device tuners correct?

EcoSwag1990 · Nov 3, 2015

He just said he will be using that by the end of next week in another thread

neodark · Nov 3, 2015

EcoSwag1990 said:
He just said he will be using that by the end of next week in another thread

This I'd love to see

Safe HP/TQ on stock engine

z6cyl

Well-Known Member

Tamadrummer88

Finicky

z6cyl

Well-Known Member

Tamadrummer88

Finicky

z6cyl

Well-Known Member

Tune+

Well-Known Member

z6cyl

Well-Known Member

ThirtyThreePointThree

Well-Known Member

Tune+

Well-Known Member

MAPerformance

Well-Known Member

Brad

Owner

Tune+

Well-Known Member

richard0ne

Well-Known Member

EcoSwag1990

Well-Known Member

neodark

Left 4cyl @home