[Compressor Wheel Damage]

 evowrx said:

What were old cams?

factory v3 sti

[Compressor Wheel Damage]

 evowrx said:

What power do you want and where do you want power? Also are you prepared to push boost up to 30psi?

i'm running 26psi on high boost on my 2.1 CDB with kelford cams and seeing 400hp atw. I think my cam's arent dialed in correctly as i should be seeing more power than that. I was seeing 430hp on my 2L ODB, same turbo different cam's.

[Compressor Wheel Damage]

 evowrx said:

This but depends what you want out of it and where you want your powerband.

im just wondering if the 3082 is right for my setup. I could look to just replace the comp wheel and leave things as they are or possibly look at a gtx 3071 or 3076.

[Compressor Wheel Damage]

What's peoples thoughts about upgrading to a gtx core and cover and reuse my existing exhaust housing?

I don't believe they do a gtx3082r, what would one use?

GTX 3071 or 3076?

Any ideas would be awesome.

Cheers

[S2 industries Air/Oil Separator]

Anyone got one second hand?

[S2 industries Air/Oil Separator]

 Rosssub said:

Not sure on fitment, but the base of the valve is open to the big side. The smaller hose is probably matched to the PCV valves opening. So no pressure change between the valve and manifold.

would this work on my early 89 CDB?

[S2 industries Air/Oil Separator]

 Rosssub said:

Not sure if it would make any difference either way. Later models have the PCV valve mounted into the T piece near the crank outlet:

Hmm interesting, the pcv hose to the manifold is smaller than the hose to the intake / catch can.

what year and model were these on?

[S2 industries Air/Oil Separator]

 nismovzr2003 said:

still running v3/v4 manifold.

its a bit sill actually, although i need to run a -12 line 'T'ed from the crank breather back to the pcv in the manifold, the actual hole within the pcv is barely 7mm in diameter lol

Would having the pcv as close to the crank breather instead of being mounted in the manifold generate more of a path of least resistance?

[S2 industries Air/Oil Separator]

 Rosssub said:

Which manifold have you got? Be easiest to mount the PCV valve back into it's original hole, if it will still fit? Then a long hose to the new T at the crankcase breather.

still running v3/v4 manifold.

its a bit sill actually, although i need to run a -12 line 'T'ed from the crank breather back to the pcv in the manifold, the actual hole within the pcv is barely 7mm in diameter lol

[S2 industries Air/Oil Separator]

Ok cool. Now, ive got a reversed manifold, do i want to mount the pcv as close to the 'T' junction as possible then run a hose from that to where it would normally attach to the manifold?

[S2 industries Air/Oil Separator]

 Rosssub said:

Should be perfect, pretty much the same as the OEM hose size differences.

Ok so the hose from the crank breather to the catch can needs to be smaller than the hose from the 'T' to the pcv?

Sh*t I think I'm just confusing myself now lol

[S2 industries Air/Oil Separator]

Ive just measured the pcv, the barb end that fits in side the hose end is approx 16.40mm. Therefore ill need to use -12 line. Hows this going to affect things taking into consideration the line between the crank breather and catch can is only -10?

[S2 industries Air/Oil Separator]

Are pcv valves a type of check valve, one way directional valve?

[Air Filter Replacement Options]

 evowrx said:

See if you can find a cfm rating. Bigger the better you want something round 1000cfm. You want the least restriction possible between filter and exhaust tip. Ive seen standard size pods make 400wkw but any improvements an improvement in my book.

sweet cheers.

[Air Filter Replacement Options]

 evowrx said:

Cheap. Yep but damn thats long will it fit?

yeah i got a **** load of room. Maybe the 9" would suffice?

[S2 industries Air/Oil Separator]

 Rosssub said:

Sweet. Should probably also install the T piece close to the crankcase outlet, rather than at the catch can end.

will do, cheers.

[Air Filter Replacement Options]

 evowrx said:

Nope just means it looks like a piano accordion lol.

Rodger.

http://nzairfilter.co.nz/air-filter/re-0860.html

Hows this for price?

[S2 industries Air/Oil Separator]

 Rosssub said:

Sweet. Not really sure how crucial the sizing is, but the OEM PCV valve needs a 16mm ID hose (5/8"). So probably good to use that size hose from T to PCV valve.

With the -10 having an ID of 12.5mm, you should end up with near OEM sized pipework.

Cheers for all the help.

[Air Filter Replacement Options]

 evowrx said:

Pleated k&n or simota as big as you can fit.

pleated?

Is that a weave type material?

[Air Filter Replacement Options]

Hey guys,

I'm looking to replace my existing HKS foam pod type filter, does anyone have any preferred options?

Was looking at the 9" or 12" K&N 4" inlet pod/cone type filter?

Any thoughts or ideas would be awesome.

Cheers

[S2 industries Air/Oil Separator]

 Rosssub said:

Yip, the PCV valve needs to feed straight into the intake manifold.

I'm running -10 line between the crank breather and catch can, can i use the same size line from the 'T' to the pcv on the manifold? Or do they need to be different sizes?

Cheers for all the help.

[S2 industries Air/Oil Separator]

 Rosssub said:

Only with the hoses recirced back to the intake, which is a constant low pressure/vacuum source. The faster you go the more it's sucking.

I think it's about the air taking the path of least resistance. If you look at the OEM hose/fitting sizes, the biggest port/hose is between the PCV valve and crank outlet. With a smaller 10mm hose going to the intake. So when the PCV valve opens it will suck through the biggest straw, (pipe to crankcase).

Also with positive pressure in the crank case and negative pressure in the intake, the PCV will draw from the positive pressure side. Again the least resistance.

So when the pcv is 'T'ed in between the crank breather and catch can, does the pcv need to be connected back into the manifold under the throttle body?

[S2 industries Air/Oil Separator]

 Rosssub said:

Spot on, positive crankcase ventilation = vacuum.

With a venting can the crankcase will always be in positive pressure. Reinstalling the PCV valve will cause it to get some vacuum when off boost.

Manifold Vacuum - PCV valve wide open, drawing from crankcase gasses.

Manifold boost - PCV valve closed, all crank gasses venting through catch can.

wouldnt the crank case get vacuum without the pcv anyway? Wouldnt it just suck back thru the catch can as the line between the crank breather and catch can is not restricted?

[S2 industries Air/Oil Separator]

 Rosssub said:

Nah that's a pic of the OEM setup. You can just put a T into your crankcase-catch can hose, then a new hose from T to PCV valve.

Ok so to get it right in my head, when the vehicle is at idle there will be vacuum and therefore the pcv will allow air to be sucked in, when the engine is under load there will be positive pressure and the pcv will close and therefore the crankcase will have positive pressure?

If so, if i'm slimply 'T'ing the pcv into the current line between the crank breather and catch can, when the engine is under load the pcv will be closed and all pressure will pass directly to the catch can?

I'm trying to work out how positive pressure is maintained in the crank case if the pressure is simply bypassing the pcv and going straight to the catch can and venting out the air breather?

Sorry if im confusing the situation

[S2 industries Air/Oil Separator]

 Rosssub said:

Probably easiest to use the original valve, but you can get after market inline PCV valves from most places.

On the OEM PCV setup the PCV valve is T'd into the crankcase-intake pipe line, so it would draw about the same as a stock PCV valve setup:

So the top 12mm line would go to the pcv and vent to atmosphere?

The bottom 10mm line that normally goes back into the air intake would got to the catch can?