bad boost leak!!!

[gsxin]

I just boost leak tested my car and air is coming out of the turbo is there any way to fix that? I cant even find any other leaks cause its leaking so fast.

 

[oldman]

Where on the turbo? Use soapy water to verified.

 

[gsxin]

I think it might have leaked through the valves. cant seem to set the cams right for boost leak test. maybe I should work on it a little further before I post a problem. 30 degrees after TDC right?

 

[oldman]

Right.

 

[gsxin]

old man what would I do with out you

 

[dsm-onster]

We would all be compaining about sputtering on boost and slow spool! "boostleak test? what's that?"

I run my boost leak tests at TDC (crank timing). I don't know if this is ideal. I can't picture in my brain a moment in crank degrees where all the intake valves are closed. Though this would be ideal to run such a test.

 

[oldman]

old man what would I do with out you

I was hoping you would know to use proper capitalization and punctuation.

I run my boost leak tests at TDC (crank timing). I don't know if this is ideal. I can't picture in my brain a moment in crank degrees where all the intake valves are closed. Though this would be ideal to run such a test.

There are no position where all intake valves are closed, one set will always be open which means one of the combustion chambers will be part of a boost leak test. TDC is actually the worst place to be during a boost leak test because when #1 is in TDC, #4's valves are overlapping causing pressure to leak right through the combustion chamber straight out of the exhaust valves, 30* ATDC is about where overlap ends.

 

[dsm-onster]

There are no position where all intake valves are closed, one set will always be open which means one of the combustion chambers will be part of a boost leak test. TDC is actually the worst place to be during a boost leak test because when #1 is in TDC, #4's valves are overlapping causing pressure to leak right through the combustion chamber straight out of the exhaust valves, 30* ATDC is about where overlap ends.

Thank you.

 

[oldman]

Thank you.

No problem son.