limegreen70
Pokorny Enterprise's
I bought a clean pair of MT valve covers. 0 holes in them for the breather or pcv. My question is, what is the proper grommet size for them? I've been reading conflicting things and I just don't want to mess them up.
MT Valve Cover Grommet
- Thread starter limegreen70
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B3422w5
Well-Known Member
Most VC’s use 1.25 size holes for grommets and breathers, etc
greendart408
Active Member
Ran into this same issue, figured it out finally. Here is the part number. It’s a Mopar number for a moroso push in breather.
B3422w5
Well-Known Member
If they currently have no holes in them at all , obviously you can cut the holes out any size you need.
The reason I mentioned the 1.25 inch hole is because that seems to be the most common size I have seen, as I have actually been looking at new valve covers and am finding most come with that size holes that I have looked at.
This is the moroso push in breather that comes with grommet
Moroso 68781 Moroso One-Piece Push-In Valve Cover Breathers | Summit Racing
And I you are using the push in breathers for a moroso pan evac deal, they are used with 1.25 holes too( actually 1.22)
K&N and other push in type breathers also use a 1.25 hole as well, like these, for example
K&N 62-1490 K&N Crankcase Vent Filters | Summit Racing
But you can put holes in them any size you want as long as you can use the holes you made…lol
But 1.25 is by far the most common size and gives you the most options as far as breathers, etc. I have been looking at enough of them the last couple of weeks to know
The reason I mentioned the 1.25 inch hole is because that seems to be the most common size I have seen, as I have actually been looking at new valve covers and am finding most come with that size holes that I have looked at.
This is the moroso push in breather that comes with grommet
Moroso 68781 Moroso One-Piece Push-In Valve Cover Breathers | Summit Racing
And I you are using the push in breathers for a moroso pan evac deal, they are used with 1.25 holes too( actually 1.22)
K&N and other push in type breathers also use a 1.25 hole as well, like these, for example
K&N 62-1490 K&N Crankcase Vent Filters | Summit Racing
But you can put holes in them any size you want as long as you can use the holes you made…lol
But 1.25 is by far the most common size and gives you the most options as far as breathers, etc. I have been looking at enough of them the last couple of weeks to know
Last edited:
skrews
Well-Known Member
Dorman # 42324 for the PCV valve
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