WPC treated motor, too extreme?
10-16-11, 01:39 AM
#1
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WPC treated motor, too extreme?
Newbie to WPC treated. Already call and talk to the office in Torrance.
Haven't put the motor together yet, plan to have NeptuneSpeed assemble the motor, boost around 12psi, mild street port, and low miles non-seq. stock turbo, looking for 350rwhp. Purpose of car is for autocross and weekend drive.
Should I WPC treat the whole internals? $1800.
New Rotors
New rear housing
Front housing
New 3 pc 2mm apex
New bearings
Used eccentric shaft
All side seals, springs, corners..etc..
Or should I just spent that money on AI and dual Mocal?
Haven't put the motor together yet, plan to have NeptuneSpeed assemble the motor, boost around 12psi, mild street port, and low miles non-seq. stock turbo, looking for 350rwhp. Purpose of car is for autocross and weekend drive.
Should I WPC treat the whole internals? $1800.
New Rotors
New rear housing
Front housing
New 3 pc 2mm apex
New bearings
Used eccentric shaft
All side seals, springs, corners..etc..
Or should I just spent that money on AI and dual Mocal?
10-16-11, 06:41 AM
#6
Radioactive Rotary Rocket
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This WPC treatment isn't really anything new. This is called shotpeening. But I get that it is different:
I think heat is a bigger killer of rotary engines.
WPC offers some advantages over shotpeening. Due to the small low mass projectiles and high impact velocities, WPC produces a higher amount of compressive stress and an increase in the degree of grain refinement to the base metal over shotpeening. The velocities are so high that in addition to shotpeening-like grain refinement via cold working, there is also a melting and quenching phenomena going on at a very micro level as well.
10-16-11, 07:57 AM
#7
Rotary Enthusiast
So... reduced friction and increased strength? I wonder if the reduced friction would have a significant effect on the efficiency of the rotary engine?
I like that the process doesn't affect clearances. $1,800 doesn't sound completely unreasonable, but would you feel the difference?
I like that the process doesn't affect clearances. $1,800 doesn't sound completely unreasonable, but would you feel the difference?
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10-16-11, 08:06 AM
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Absolutely not. Shotpeening reduces stress concentrations in metal and makes it slightly stronger. Unless you plan on being on the razor edge of blowing your motor due to breaking your components, this will do nothing.
Low friction coatings would be a better investment if you wanted to eak out that last bit of power. However, with the amount of power you are going for it doesn't seem like you need either.
Low friction coatings would be a better investment if you wanted to eak out that last bit of power. However, with the amount of power you are going for it doesn't seem like you need either.
10-16-11, 09:52 AM
#9
RX-7 Bad Ass
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I agree. I'd spend the money more wisely, I just don't think you'd get any benefit from this.
Some of these processes are really only worthwhile on race engines that you need the absolute last 10/10th performance to win races.
Dale
Some of these processes are really only worthwhile on race engines that you need the absolute last 10/10th performance to win races.
Dale
