ECUtune SVX pistons

[longassname]

We've gotten in the first batch of custom SVX pistons so it's time to start this thread. This piston design is now established for us so we can offer them as individual sets. They will be made available on our website when I revise it for multitude of performance hardware options we are developing (pistons, cam sets, rods, transmissions, forced induction parts); except for the forced induction parts, the other performance parts allready have their own threads.

Price $1090 shipping $30 lead time 5 weeks

highlights:
compression ratio: 8.5
pins: tool steel
valve reliefs: -0.275"
anti detonation grooves

Description: These are forged pistons designed for use with either gasoline or E85 and boost levels up to and in the 30's psi range. They are machined from the strongest forgings possible with emphasis being placed on strength. Appropriate rings are included and optimum ring placement for the application was incorporated into the design. Latteral gas porting was incorporated to facilitate sealing of extreme cyllinder pressures. Tool steel pins were used for maximum strength. Pins are centered as this is better for higher cyllinder pressures. Piston tops are designed for optimum squish area performance, intake charge mix, charge to spark kernel pressentation, flame propagation, and expansion force application.

I'll follow this post with some pictures and some notes trying to illustrate the features.

[longassname]

Stack of the 1st seven sets. These are all spoken for not stock.


1 boxed set open


the boxes of rings and tool steel pins opened


bottom/inside of piston note the holes that allow the oil from the oil control rings to pass through--obviously much stronger than the factory slots which were prone to failure.


note the grooves for the Subaru Tru Arc pinston pin circlips
note the the oil dispersion grooves on the pin oilers



note the deep valve reliefs which maintain zero interference with high lift camsafts
note the symetry of the piston top
note the flat top matching the cyllinder head squish area




note the anti detonation grooves
note the deep ring placement
note the latteral gas porting on the top compression ring

[RSVX]

Note the sheer awesome-ness of this thread...

[92svxinmn]

Do you know the weights of the pistons and the weight of the pins? are they lighter then stock? Cool but I'll have to wait for awhile on a set. Still machining deck insert to close the deck on my block.

[sicksubie]

Which box is mine, which box is mine??? Those are awesome. They can withstand up to 30psi you said, but what is the peak boost that we will safely be able to run on pump gas? I think you might have said what it was on the phone (15psi I think) but I am not sure.

[sicksubie]

BTW any news on the rods? You said that you were going to match the pistons and rods into sets before you shipped them to me right?

[longassname]

pistons are 419 grams. I think the pins are around 120 grams.

the forged piston complete with tool steel pin is about two ounces lighter than the factory piston and factory pin

[JaySVX]

Originally Posted by longassname

Description: These are forged pistons designed for use with either gasoline or E85 and boost levels up to and in the 30's psi range.

That should answer your question.

[SilverSpear]

Originally Posted by JaySVX

That should answer your question.

**** I must have been drunk... embarrassing!!

[svxistentialist]

Originally Posted by SilverSpear

**** I must have been drunk... embarrassing!!

Again, Danny??

Hey, you must know some people who know some people to be even ABLE to get drunk in Quatar!!

Joe

[SilverSpear]

Originally Posted by svxistentialist

Again, Danny??

Hey, you must know some people who know some people to be even ABLE to get drunk in Quatar!!

Joe

Joe, I'm Christian, I am buying liquor over here... But is more expensive than usual

[cdigerlando]

Originally Posted by longassname

We've gotten in the first batch of custom SVX pistons so it's time to start this thread. This piston design is now established for us so we can offer them as individual sets. They will be made available on our website when I revise it for multitude of performance hardware options we are developing (pistons, cam sets, rods, transmissions, forced induction parts); except for the forced induction parts, the other performance parts allready have their own threads.

Price $1090 shipping $30 lead time 5 weeks

highlights:
compression ratio: 8.5
pins: tool steel
valve reliefs: -0.275"
anti detonation grooves

Description: These are forged pistons designed for use with either gasoline or E85 and boost levels up to and in the 30's psi range. They are machined from the strongest forgings possible with emphasis being placed on strength. Appropriate rings are included and optimum ring placement for the application was incorporated into the design. Latteral gas porting was incorporated to facilitate sealing of extreme cyllinder pressures. Tool steel pins were used for maximum strength. Pins are centered as this is better for higher cyllinder pressures. Piston tops are designed for optimum squish area performance, intake charge mix, charge to spark kernel pressentation, flame propagation, and expansion force application.

I'll follow this post with some pictures and some notes trying to illustrate the features.

Excellent specs. CP pistons are supposed to be top notch. Since this seems to be an obvious weak point from Tom's extensive experimentation, I think that this was a smart move. Can't wait to see them. Didn't you also mention that these were 97 mm diameter in a previous thread?

[JaySVX]

Originally Posted by cdigerlando

Since this seems to be an obvious weak point from Tom's expensive experimentation, I think that this was a smart move.

Fixed it.

Jay

[TomsSVX]

Originally Posted by JaySVX

Fixed it.

Jay

not as bad as you would think. I was able to work a deal with both LAN and the new motor's owner to get out of dodge fairly easily on that one... Now this one will be just a pinch more expensive

Tom

[JaySVX]

I defidently want to check it out at some point what your doing with it. Sounds like it's defidently out on the verge of invention.