Have a slight annoyance with my Frankenstein PCV set up - any experts (or non experts - ) venture to guess what the problem and solution could be?
Carb - Holley P.O.C (ok I won't go there)
PCV incorporated into the base on the primaries.
Line runs from the back of the carb over to the PCV valve on the driver front valve cover.
p/n 2072 cross references to a Fram FV184 which is designed for a Chevy 350 (probably the trouble ) so figured it was about the right valve for the 352. Similar displacement. Did a lot of complex computations to pick this one (aka - needed the right angle that fit the grommet and this was the one I found).
Fresh air intake filter on the opposite valve cover.
Nothing special - push in style.
System works fabulous until........
Been riding for a while and have to descend a long grade.
Vacuum pressure would be at maximum and I suppose rather than just pulling gasses from the engine it's now pulling oil vapor or actual oil. Can smell it burning through the exhaust.
Was thinking that I could:
* Block off some of the holes in the breather cap to limit intake.
* Find a different PCV valve
* Limit intake with some type of in line restrictor.
* Maybe the system doesn't get enough air through the breather at max vac pressure rather than too much and so adding the in line restrictor would help?
Whatcha thunk?
Eric
Carb - Holley P.O.C (ok I won't go there)
PCV incorporated into the base on the primaries.
Line runs from the back of the carb over to the PCV valve on the driver front valve cover.
p/n 2072 cross references to a Fram FV184 which is designed for a Chevy 350 (probably the trouble ) so figured it was about the right valve for the 352. Similar displacement. Did a lot of complex computations to pick this one (aka - needed the right angle that fit the grommet and this was the one I found).
Fresh air intake filter on the opposite valve cover.
Nothing special - push in style.
System works fabulous until........
Been riding for a while and have to descend a long grade.
Vacuum pressure would be at maximum and I suppose rather than just pulling gasses from the engine it's now pulling oil vapor or actual oil. Can smell it burning through the exhaust.
Was thinking that I could:
* Block off some of the holes in the breather cap to limit intake.
* Find a different PCV valve
* Limit intake with some type of in line restrictor.
* Maybe the system doesn't get enough air through the breather at max vac pressure rather than too much and so adding the in line restrictor would help?
Whatcha thunk?
Eric
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