Jump to content
SAU Community

Recommended Posts

  • Replies 41
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

i am undecided which way to go...

1. 'border' catch can which vents out the top of the unit with a flat filter (from greenline or rhd)

OR

2. 'essential' catch can as pictured which dont vent out (from greenline or rhd)

what is better for engine? as i understand it venting out is illegal however it does its job better by keeping the air cleaner & not returning it back into the engine...thoughts?

Is it essential to have a catch can?

I have an after market intake pipe and just have a hose off there to the rocker cover breather (the one that usually plumbs into the plumb back pipe) as I have taken the plumb back pipe out

Is it essential to have a catch can?

I have an after market intake pipe and just have a hose off there to the rocker cover breather (the one that usually plumbs into the plumb back pipe) as I have taken the plumb back pipe out

can u post a pic of your setup?

Thats fine abu. I run mine the same at the moment, though i do plan on reinstalling a can at some stage.

I ran without a catch can for 3 or so track days with no issues. I found the can was always dry afterwards so wasn't worth keeping when it got in the way of reinstalling the stock airbox

From what I understand catch can is used on turbo engines running higher boost levels for long periods,

like motorway or racetrack.

The factory system works by air starting at the intake pipe side (before turbo) and ending up inside the

intake plenum via the PCV (Positive Crankcase Ventilation) valve.

You have to block PCV valve hole off and block the intake pipe hole (before turbo) and run 2 hoses from each

camcover to the catch can. Then run a single vent line to under the back of engine. Or vent via a filter

on top of the catch can.

Size in litres, depends on engine capacity and racing regulations. I think 1 litre is minimum

for a RB20DET.

This is probably one of the best guides to building your own catch can, swirl pot that I have seen

with the vent on top of catch can -

http://www.autospeed.com.au/cms/A_1576/article.html

Autosport Engineering are the people to contact in the above link.

From what I understand, what's good about the above catch tank, is it separates the oil from

the air.

Edited by SKYPER
call Performance Metalcraft on 9638 2419 and speak to Leon. He makes the ones that sit in front of the battery and they work a treat

do u remeber off hand what performance metalcraft charge for this catch can?

i will speak to leon tomorrow

Thats fine abu. I run mine the same at the moment, though i do plan on reinstalling a can at some stage.

I ran without a catch can for 3 or so track days with no issues. I found the can was always dry afterwards so wasn't worth keeping when it got in the way of reinstalling the stock airbox

Awesome, thanks Dave

Thats pretty much all the information I was after

u funny farker :) i dont touch that stuff, im a responsible married gentleman

don't lie i know you want to smoke my mums pantyhose your a sick farker (i know you) siko...........................

i am undecided which way to go...

1. 'border' catch can which vents out the top of the unit with a flat filter (from greenline or rhd)

OR

2. 'essential' catch can as pictured which dont vent out (from greenline or rhd)

what is better for engine? as i understand it venting out is illegal however it does its job better by keeping the air cleaner & not returning it back into the engine...thoughts?

essential cant vent out? ;)

just put a filter on the outlet your not using....vented....

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...