I would like to know what is the most boost that it has been put through? Has anyone tested it yet? Does anyone know, maybe by a chart, of what pressure it can handle?
Mine is currently on 12lbs and doing great... but, my motor is fully built and im ready for 15-18lbs... PM if you dont mind...

Thanks

 

its not about PSI...its about CFM...u could run 30psi on a turbo u took off a nissan pulsar...would not do a damn thing to the stock manifold, now take a gt40 and run that to 30psi u can bet your ass off your gunna blow something up...u need to say what turbo u have, and u need to get a compressor map and tell us how much CFM that thing will be blowing at the boost ur looking to turn it up to. if your really worried about blowing it up, why dont u get a saab or a 2.4 manifold? they are not expensive, the saab cost ~120, the 2.4 cost ~150, both will handle boost just fine, hell the saab one is a equal lenght one made for a boosted ecotec...

 

Pressure is pressure. But when it comes to airflow its different per turbo. He can blow the manifold just as fast on 20psi on a small turbo as 20psi on a big turbo. Now if he was asking about POWER then yes you are correct jn2, but hes just asking about how much pressure the stock manifold can take.

To answer your question OP, find my thread about when I ran 20psi through it for about 3 pulls.(Actuator hose came off and I overboosted). I blew it to pieces If you want to save a bit of money(like I'm going to do for the time being), buy the 2.4 intake manifold. It can take 20+psi consistantly for a long period of time.

 

I agree, the manifold will only hold so much pressure. If you increase the CFM at the same PSI it will blow faster.

 

How? If the manifold is blowing up because of internal pressure, not airflow, how is say a GT30 @ 15psi vs a GT28 @ 15psi going to blow it any faster? Its the pressure thats causing the manifold to split, and if your running the SAME pressure, theres no difference. Yes there is a difference in airflow but not pressure, so therefor doesnt matter.

Please correct me if im wrong, but I cant find anything on google to disprove this.

 

In engineering terms, its the pressure that would cause it to come apart, not the flow.

The only way that increased flow would cause it to fail would be if you were forcing an abrasive through it, sand or crushed glass. That would be the only way for increased flow would cause it to fail.

 

15psi is 15psi

 

Thanks for the backup there

 

It's a garrett super60 with a flow of 35lbs min. Can I get 15-18lbs out of it?

 

I'm going to go ahead and say, no. You might get it one or two runs, but people have blown it apart as little as 15 psi. I would say just to keep it on the safe side, upgrade to the 2.4 manifold at the very least.

Hey you can buy my intake manifold, 6061 aluminum powder coated black, good for more psi than your block can handle.

 

^^^ the 2.4L manifold flows better anyways you might show an extra psi just using it maybe?

 

If anyone isnt sure, ive put 17lbs with a garrett super60 on this manifold and had no problems at all... So, consider it done... haha... however, im still going to replace it with the vulcan manifold, bc they flow a lot better... Just thought id do a little myth busters experiment...

 

I always put sand in my intake, I hear it cleans it from the inside out, isnt that right?

 

oh ya, adds 10whp