Did I port this OFH too much?(pics)

[DROPthatCLUTCH]

Just looking for opinions, I went pretty far on the top of the piston side.

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Second picture is with the piston pulled out a bit so you can see how deep it goes in comparison.

 

[RamenPride]

It might be okay, but for the most part all you need to do is make a "D" shape at the area near the top of the piston and leave the sides alone. Each car is different, though.

 

[TSIfreek]

The bottom is were you want to concentrate on it were the piston starts to open to releive the excess oil pressure doing anything to the top is really useless. Just be carefull on how much you port the bottom as you dont want to loose the pistons seat in the housing. You should be fine with what you have done I would do no more.

 

[DROPthatCLUTCH]

The bottom is were you want to concentrate on it were the piston starts to open to releive the excess oil pressure doing anything to the top is really useless. Just be carefull on how much you port the bottom as you dont want to loose the pistons seat in the housing. You should be fine with what you have done I would do no more.

Ya that's why I was worried, the last part o the piston side wall only tucks in about 1mm from where I stopped porting. So I'm pushing it real close...

 

[DROPthatCLUTCH]

Any other opinions on whether or not I should fire the engine up with this housing, or just save my time and get a new one?

 

[white92talontsi]

You will be fine.

 

[EGLTAWLN]

you should prove it still supplys enough oil pressure.
or else.

 

[DROPthatCLUTCH]

you should prove it still supplys enough oil pressure.
or else.

You on boostedalberta?

 

[DROPthatCLUTCH]

If I do experience low oil pressure, could I not just shim the spring?

 

[JusMX141]

You're not going to experience low pressure.

The pressure relief valve is basically a wastegate to your oil system. All you're doing there is giving the oil bypassing the valve a larger hole to exit back into the oil pan. The hole at the base of the piston is the same size...much like adding a 3" exhaust to a car, yet the wastegate hole itself remains the same size.

 

[TSIfreek]

Justin nailed this one! I wouldnt worry about it dude. Guys have ported more than you and are on running engines. I have 22 psi at idle and over 80 WOT on 25/50 hot engine. I also use a kiggly HLA regualtor in the head that ups the pressure a little i have noticed. I would highly recommend it.

 

[DROPthatCLUTCH]

Alrighty thanks guys. And I was aware that it works like a wastegate I was more just worried about how close I got to the end of the piston.

 

[TSIfreek]

Alrighty thanks guys. And I was aware that it works like a wastegate I was more just worried about how close I got to the end of the piston.

Keep in mind the top of the piston is were it seals not the sides. The sides are were the oil is dumped back into the oil pan and also supports the piston.

 

[DROPthatCLUTCH]

Keep in mind the top of the piston is were it seals not the sides. The sides are were the oil is dumped back into the oil pan and also supports the piston.

Okay. That's great to hear I thought it was the sides that sealed. Thanks man!