HomemadeTurbo - DIY Turbo Forum - Safe to tap a coupler for WG?

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Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by Dmc1

For real if you know anything about a turbo car at all you can tell when you have any kind of boost leak at all.

No you can't. Not with the refererce at the manifold.

Whitey, this thread is too much for you to understand; go back to your ABC blocks.

Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by MADMAX

No you can't. Not with the refererce at the manifold.

Whitey, this thread is too much for you to understand; go back to your ABC blocks.

I know with all this advanced turbo theoretical physics using Corky Bell as a main reference, I’m just way out of my league here. ::) I'll sit this one out while you keep explaining how your not able tell if your car has a boost leak. :3

Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by Whitey

No references are needed. This is a simple concept that most people can understand, except that you're a monkey, so you're kind of hindered I guess.

Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by MADMAX

No references are needed. This is a simple concept that most people can understand, except that you're a monkey, so you're kind of hindered I guess.

Your the one who has no idea if your car has a boost leak or not. It doesn't get any simpler than that. whats your excuse?

Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by Whitey

Your the one who has no idea if your car has a boost leak or not. It doesn't get any simpler than that. whats your excuse?

You are seriously mentally handi-capped. Your family should stop inbreeding.

Quote:

Originally Posted by MADMAX

The only way the turbo is NOT going to overspin is if the leak is small enough.

If the leak is so bad that you don't build any boost, then that means the WG is not opening and the turbo is free to overspin from the uncontrolled exhaust. This is easy to spot and correct though, unless you're a retard and just keep driving it like that.

The very bad situation is when the leak is just large enough to facilitate the boost level you want, but the turbo is actually spinning so fast to flow that huge CFM (flow for the engine PLUS flow for the leak) at the low boost pressure.

The other downside is that at that point on the compressor map, it is so inefficient that your IAT's will skyrocket.

Re: Safe to tap a coupler for WG?

Quote:

Originally Posted by robbie2883

persoanlly i would rather always tap as close to the compressor as i can. if you tap manifold and have a leak between the source and the turbo you could be spooling (hypothetical) 30 psi just to make 10 psi in the manifold....WAY overspinning the turbo...also robbing power....

First off, if you have a leak like that somewhere, overspinning your turbo won't be a problem, as you won't be making enough power to spool it up much. I can understand using it if you're maxing the turbo and can't run any higher due to not getting that last CFM out of the turbo. But not because you're a twat and can't produce a turbo setup that has zero leaks - you should be checking that before turning the key:

Pop off your IM coupler and the turbo coupler. Pop in a 2" pvc cleanout w/plug, tap a gauge in one end, a valve step in the other. Pressurize with a bike pump, compressor, your mom's lips, etc. BOV might leak if you don't pressurize its port, otherwise the gauge will not move if there's no leaks. I did this in a minute, after I tracked down the cleanout with the gauge. Damm think popped off at 25psi, shot out of the garage 20ft!