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#59472 04/23/2006 1:45 AM | Joined: Aug 2002 Posts: 455 Shop Shark | | Shop Shark Joined: Aug 2002 Posts: 455 | Depends on your valve and how much manifold vacuum drop it causes at idle.
I found the Deutsch PCV125 had the lowest drop of only 3" at idle, but still enough suction to excavate the crankcase gases.
You hardly have to adjust your carbs at all with this valve.
Also stays more open at high rpm and cruising.
Vacuum wiper motors work also better.
The pcv valves recommended in the new books seem too tight for the 235.
They lose almost all manifold vacuum already at idle and start shutting off too soon at part throttle. | | |
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