Pressure source for the WG...

[Falco]

Since I couldn't find a pressure source on the compresor side of my PT52 as on a stock turbo, I have to look after an other pressure source. For now I choosed the closest point on the upper intake and I'm running a line to my Innovative from there. However the lining from the intake to the WG is more than 1', so I'm a bit concerned about slow response from the WG. I tried to use the largest diameter possible, but I'm affraid it still won't be enough.

An other option could be to tap the metal turbo to IC line. It would be much closer. What do you think? Any experience with an intake vacum source connected to an external?

HTH,

 

[BillC]

Re: Pressure source for the WG...

Since I couldn't find a pressure source on the compresor side of my PT52 as on a stock turbo, I have to look after an other pressure source

On my PT52, PTE had installed a brass hose barb on the compressor housing, directly opposite the outlet (drilled and tapped the hole, then screwed the fitting in). I would guess that the compressor housing is probably the best pressure source, since it'll be the highest pressure in the system -- any where else, and you'll get minute pressure drops from viscosity losses (aka, drag), turbulence, etc.

I don't think it's all that critical where you drill the hole for the pressure tap, as long as it's not in the smallest part of the scroll.

 

[Falco]

Thanks Bill. I'd prefer to drill the turbo to IC pipe than the compressor's house. If something goes wrong it much easier to correct... :-?

Later,

 

[GEN3Typhoon]

I prefer to use the intake as the pressure source for boost control. Just seems to work better for me. A more accurate signal of what the engine is seeing than at the turbo.

If you are using the boose controller at the intake to IC pipe and set it for 18 psi.. and the IC has a 2 psi pressure drop.. then the motor may only see 16 psi..

It is of course all realative.. I just like to use the intake.. now if you are hooking you boost gage to the intake and you have an adjustable controller this makes no difference at all.. if you are using a chip it might.

Just my $ 0.02

 

[Falco]

Thanks your input, Nick! I'm using an adjustable valve to regulate pressure and I also will try to go with a source on the manifold for the exact reason you mentioned.

Later,

 

[smeagol]

If you use the compressor as a boost source, your control will be a bit more responsive I believe. I usually keep it this way, this is the way most turbos are setup from the manufacturers, I believe there is a reason.

 

[Falco]

Thanks Brian,

I'm trying the source on the intake and will see. If it wont work I'll drill the turbo to IC line next to the compressor outlet...

Later,

 

[leroy]

I've tried an adjustable regulator with an internal and didn't have much luck. Maybe I just didn't play with it long enough. Let us know how it turns out Falco.

Jim

 

[Falco]

Will do so Jim...