Crank Case Breather SBC

[fastco]

DHGTR said:

wow thats some kind of great looking engine in that 3rd picture.!!!

Yes in indeed a real head turner & snapper.. how you come'n along with the beast? Up and run'n yet?....Cheers! Dr,Dee

[BogBeast]

fastco said:

Hello..your best PVC system is to use billet alum valve as in some photos and plumb 3/8 ID braided hose to carb base from PCV valve, and on other rocker cover use 1.25 OD K&N useable filter... job done!

I take it that that air is sucked in thru the K&N, around the crankcase and then out through the PCV? (sorry just trying to get it straight in my head...)

[steve_d]

BogBeast said:

fastco said:

Hello..your best PVC system is to use billet alum valve as in some photos and plumb 3/8 ID braided hose to carb base from PCV valve, and on other rocker cover use 1.25 OD K&N useable filter... job done!

I take it that that air is sucked in thru the K&N, around the crankcase and then out through the PCV? (sorry just trying to get it straight in my head...)

Yes you read/interpreted that correctly although I don't agree with it.

What you could be doing is drawing air into the system at a time of high manifold vacuum which will enter below the carb and mess with the AFR. If the filter were removed and the vent sealed then the inlet would only be able to draw blow-bye gasses. It would be a roughly balanced system as the max vacuum will be on full power coinciding with the highest blow-by.

Steve

[scuff]

Hello all,

I have completed the mod and fitted the engine breather. Nothnig ground breaking as there a quite a few who have fitted similar. Here is the result. Thanks to all who contributed and offered advise.

The final proof will be in the testing. Guess that when the car goes for a tune up at Track and Road (2nd April) will better know the results.

Thanks again.

Edited by scuff on Thursday 15th March 21:39

[tuxman]

looks good scuff ,you did not happen to have a bit of -10 hose spare did you ? i need a bit . simon

[scuff]

Sure I have about 20cm left, you can have it. Either ring me an give me your address and i will post or drop by and I can give you the hose and a beer.

Scuff