Gains from the little thingss in shortblock prep? Experts inside..
#1
Gains from the little thingss in shortblock prep? Experts inside..
Rebuilding a bottom end, stock displacement, forged rods and pistons. For an NA/small nitrous application, meduim to high RPM, what would the benefits be for:
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
#3
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Rebuilding a bottom end, stock displacement, forged rods and pistons. For an NA/small nitrous application, meduim to high RPM, what would the benefits be for:
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
#4
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Rebuilding a bottom end, stock displacement, forged rods and pistons. For an NA/small nitrous application, meduim to high RPM, what would the benefits be for:
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
#5
Launching!
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Rebuilding a bottom end, stock displacement, forged rods and pistons. For an NA/small nitrous application, meduim to high RPM, what would the benefits be for:
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
- How low tension of a ring pack?
- oil squirters?
- dry sump?
- vacuum pump?
- coated skirts?
anything else suggested to look into?
Just looking for some suggestions!
Last edited by deadhorse66; 07-29-2008 at 09:56 PM.
#6
Good point about the squirters, I admit I don't know a lot about building a bottom end yet. I will leave those off, as I do not need them. I was going to ask about gas ports on the pistons as well, but figured they would get clogged with carbon over time and aren't worth it for a street/strip car. Those are the kind of numbers I was looking for deadhorse, I REALLY appreciate you sharing
JPH that is the second time someone recommended that Mahle setup for the piston, it must have it's merit and I've read good things about it. Looks like the way to go, thanks!
JPH that is the second time someone recommended that Mahle setup for the piston, it must have it's merit and I've read good things about it. Looks like the way to go, thanks!
#7
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The vacuum pump is something that must be implemented with low tension rings, however for a street application, I would not recommend either. Oil squirters would be a step backward unless you are heating the piston to insane levels with a power adder of some sort--they don't help power, they actually hurt it by creating more crankcase windage. They are more of a necessary evil in applications that really require them to maintain durability. Remember, you want to keep that oil off of your reciprocating assembly except what is absolutely necessary. Go with a coated piston, yes--thats almost free horsepower. Another thing I like to stress is plenty of oil clearance. Try to keep your rod side clearance around .025 or so, and you free up a lot of friction. Of course, your oil clearances should be around .0025 or so across the board. Keep your ring gaps at the low end of the spectrum (.016, add for nitrous) and watch it scream. All this stuff is crucial to a revver. Of course, these engines are built very well as they come with windage treys, baffled oil sumps, etc., so its hard to improve upon, but it can be done.