So, im building an eco for boost, my goal is 400+ to the wheels. should i resleeve and o-ring the block?
horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Well, there's actually better news...here's what we see as required for this power level;
Rods
Pistons
Head Studs
Valve Springs
The stock sleeves will put up with as much as 575 engine HP, (call it 500 WHP) until they get delicate. We've run combos thus equipped for years with stock sleeves in the 400-425 WHP range with zero issues.
O-ringing and a copper head gasket would not be required unless you are spraying nitrous too, or running big power...more than 700 HP. The stock (or a Cometic) gasket will hold up to 500 + HP on boost only, but anything over 500 HP, I recommend also upgrading to 1/2" head studs.
Bill Hahn Jr.
Hahn RaceCraft
World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com
if you want to build the engine to support that without any worry, resleeve it, rods, pistons, leave the crank alone.
o-ring? waste of time..
why leave the crank alone? i was gonna knife edge it, or would that greatly reduce its power handling? knife edging drops alot of weight
horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
It's hardly worth the money at these power levels. You could better spend the cash elsewhere on pure durability instead.
Bill Hahn Jr.
Hahn RaceCraft
World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com
thanx for all the help guys, its greatly appreciated.
horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
do you think a hardened oil pump is in order at these power levels? i dont wanna find out the hard way, lol
horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Hardened?
Do you mean High volume?
Never heard of a hardened oil pump.
He probably means hardened oil gears. The eco has a problem with breaking them for a certain reason. I think it was like high rpm or something.
-Seth
02 silver cavy wrote:do you think a hardened oil pump is in order at these power levels? i dont wanna find out the hard way, lol
That would be money well spent, cetainly better than knife-edging...but we've also never failed a stock pump at 500 or less HP.
Bill Hahn Jr.
Hahn RaceCraft
World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com
02 silver cavy wrote:why leave the crank alone? i was gonna knife edge it, or would that greatly reduce its power handling? knife edging drops alot of weight
knife edging does not take off a lot of weight. maybe 2lbs at the MAX.
I must confess... I feel like a monster!
wizkiddrummer wrote:He probably means hardened oil gears. The eco has a problem with breaking them for a certain reason. I think it was like high rpm or something.
-Seth
Good point. Usually, this pump upgrade mod is good for cars that will see super-rapid acceleration and big RPM under load (such as engines in excess of 500 HP), and/or a lot of 2-step use (which can just rattle the stock pump to breakage).
As I mention, we've seen the stock pumps survive well under 500 HP, so anything below that won't typically hurt a stock pump.
Bill Hahn Jr.
Hahn RaceCraft
World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com
the oil gears are for when you use a 2 or 3 step limiter on the launch.
when you sit on the limiter for prolonged periods (like super high rev limits, or launch control), the oil gears expand, break, and the engine booms because of no oil pressure.
Not just because of that...
we have had 6 on the past 12 months have that happen here at work.
That may be a good idea just because.
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
