How much Boost is safe on a stock engine.
On 5psi and running alittle lean i made 127hp at the wheels and the i got 460cc injectors and then i was running 16psi and im pretty sure i was up around 180hp then one of my rods started knocking but the money had like 240xxx on it and a stay 47 hrs of driving on it.
/\ this.
as long as you can keep the boost coming on progressively and not within a couple hundred rpm you can run surprisingly high pressures on the stock block.
leatherface was running what, 27psi?
as long as you can keep the boost coming on progressively and not within a couple hundred rpm you can run surprisingly high pressures on the stock block.
leatherface was running what, 27psi?
well I've built it according to corky bells formula for a maximum effort system. 3000 rpm is soft for sure but at and beyond 4 k it's monsterous. With the head work and mbsp I have raised the rev limiter to 7500 rpm and there is no boost Droop
On 5psi and running alittle lean i made 127hp at the wheels and the i got 460cc injectors and then i was running 16psi and im pretty sure i was up around 180hp then one of my rods started knocking but the money had like 240xxx on it and a stay 47 hrs of driving on it.
I took my motor apart today and found that the noise was a piston that was melted due to the injector shorting out and i had the same effect when i was running 16psi, after 4 grand the car turned into and animal lol
Joined: Sep 2010
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Total Cats: 1,087
From: Lake Forest, CA
"How much boost can it handle" without further details is one of the dumbest questions ever. In order to be able to make any sort of estimation we would need to know all the details. You changed all the metals? What kind of rods? What sort of turbo/manifold/exhaust/etc? Engine management? Who is tuning it?
It is known that, on average, stock rods tend to fail somewhere around 250 wtq assuming good tune and such. if the boost comes on hard and soon it is more likely to break than boost onset softer and later.
It is known that, on average, stock rods tend to fail somewhere around 250 wtq assuming good tune and such. if the boost comes on hard and soon it is more likely to break than boost onset softer and later.
"How much boost can it handle" without further details is one of the dumbest questions ever. In order to be able to make any sort of estimation we would need to know all the details. You changed all the metals? What kind of rods? What sort of turbo/manifold/exhaust/etc? Engine management? Who is tuning it?
It is known that, on average, stock rods tend to fail somewhere around 250 wtq assuming good tune and such. if the boost comes on hard and soon it is more likely to break than boost onset softer and later.
It is known that, on average, stock rods tend to fail somewhere around 250 wtq assuming good tune and such. if the boost comes on hard and soon it is more likely to break than boost onset softer and later.
good answer.









