How high boost can a ca18det handle?

[Giallo spyder met]

With forgde lowcomp bottom.Just the block how high boost can it take?

[The_Chosen_One]

Stop looking at boost psi. 20 psi on Turbo A is NOT the same as 20psi on Turbo B. You could have a turbo that flows more at 7psi than a smaller turbo that flows at 20psi.

[Giallo spyder met]

I have a Precision Sc6162sp spec 650hp.If a change the question to how much Power do the stock blockhandle?

Stop looking at boost psi. 20 psi on Turbo A is NOT the same as 20psi on Turbo B. You could have a turbo that flows more at 7psi than a smaller turbo that flows at 20psi.

[meminto]

Yeah agrere with this, its about efficiency in the turbo, remember more boost = more heat too...

However to answer your question, it depends on your bore size and overall health of the bottom end..

If you are concerned about it, there are ways to strengthen the block, grout filling is the easiest, you will find info about it through hi comp old school V8 enthusiasts...

As an example, my engineer has almost finished my balanced bottom end, forged rods, forged pistons, cryo treated + nitirded crank and rings/bearings to suit.

This will be safe for 30-35psi, however I will be much happier to have the turbo reach efficiency beforehand, which if I have matched everything correctly it should do...

[Giallo spyder met]

Yeah agrere with this, its about efficiency in the turbo, remember more boost = more heat too...

However to answer your question, it depends on your bore size and overall health of the bottom end..

Right now i boost 30psi and rev 8800rpm.But next week im going for E85 and 37psi boost.

If you are concerned about it, there are ways to strengthen the block, grout filling is the easiest, you will find info about it through hi comp old school V8 enthusiasts...

As an example, my engineer has almost finished my balanced bottom end, forged rods, forged pistons, cryo treated + nitirded crank and rings/bearings to suit.

This will be safe for 30-35psi, however I will be much happier to have the turbo reach efficiency beforehand, which if I have matched everything correctly it should do...

[boost_boy]

I have a Precision Sc6162sp spec 650hp.If a change the question to how much Power do the stock blockhandle?

The simple answer to your question my friend is "We don't know". I don't think the block is the one you should be concerned with, but moreso how much fatigue can the components in that block can take before their structural integrity is compromised thus causing catastrophic damage which could very well find their way out of your block and perhaps through your radiator or firewall or wherever they may end up.

Dee

[themadscientist]

I have never heard of a CA block failure or an SR for that matter, RB26s, yeah, they crack.

[The_Chosen_One]

I've seen a picture of a CA block with a big *** hole through the black. It was pretty gnarly.

[themadscientist]

That's the failure of a rod not the block. I've seen a tore up SR block but it was failed piston and rings fault. He is talking about a pressure failure of which i have on seen RBs succumb to.

[ILoveMyRHS13]

Uhhh, just crank it up to 18psi then send me the motorset.

[NUT-CSE]

Doesnt Big Tone run 2.5bar (35psi) with no problems?

[Giallo spyder met]

My goal is 35psi + and over 530whp on E85.

Doesnt Big Tone run 2.5bar (35psi) with no problems?

[Giallo spyder met]

Right now i run 2.1bar on regular pumpgas.

My goal is 35psi + and over 530whp on E85.

[bentvalves]

TMS, you've said it yourself in the past I think....CA was japans choice of high power 4cyl drag engine for a while, for a reason ; )

p.s. high five giallo, congratulations.

It must sound utterly terrifying.