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#1
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ECUtune SVX pistons
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. |
#2
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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 |
#3
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Note the sheer awesome-ness of this thread...
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Chris SVX World Network Administrator -1993 Subaru SVX LS-L, Barcelona Red, #46, 160,000+ Miles (Sold to SomethingElse) -2011 Toyota Sienna SE, Black, 30,000+ Miles (Swagger Wagon ) -2002 BMW R 1150R ABS, Black, 26,000+ Miles (Daily Driver ) SVX Owner from February 1997 to March 2008 SVX Online Community Member since February 1998 SVX World Network Member since February 2002, Member #520 Life is a game. Play to win. The world belongs to those who can laugh at it. |
#4
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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.
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#5
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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.
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Former: 1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2) Current: 2017 Ford Raptor 2017 Kawasaki KLR 1995 Guards Red Carrera 1995 Spec-ish Miata - track car 1957 CJ-5 |
#6
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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
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Michael Emery, MBA, MS 94 SVX LSI, Ebony Pearl profile 94 SVX LSI, Ebony Pearl from back Performance and Multi-Fuel Tuning Last edited by longassname; 04-23-2007 at 02:41 PM. |
#7
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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?
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Former: 1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2) Current: 2017 Ford Raptor 2017 Kawasaki KLR 1995 Guards Red Carrera 1995 Spec-ish Miata - track car 1957 CJ-5 |
#8
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no news on the rods yet. I'm going to go ahead and ship the pistons out. I don't want to hold onto all these while I wait for the rods.
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#9
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Mmmmmmm, yummy......
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#10
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soooo nice and shiney...
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
#11
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looks like I will need to call that machine shop sooner than later eh?
tom |
#12
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omfg i gotta start saving....these are way to shiny to resist
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[SIGPIC][/SIGPIC] STi BBS wheels,legacy gt 4.44, 3" catback exhaust, Stance GR+ 7k/5k, QS Teflon adjustable endlinks, Hankook EVO 245/40/17, 95-LS escaine seats, GC8 V7 steering wheel, JDM clear corners, small car clear lenses, Alcyone badge, JDM rear taillight, 97 grille, stevesby bumper, PWR radiator, Perrin Crank pulley, Urethane Swaybar bushings, urethane diff bushings, DDM 6k 55watt lows and 4500k 35watt fog lights; $15/15min mod, Motorsport whs 22mm rear swaybar, QC shift kit, ToMyx intake, z32 aluminum calipers 13" rotors, nitrous express proton + wet kit. |
#13
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oh beautiful and shiny
looks like SVXi can withstand more boosts and be even faster...
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-SSSVX 92 LS-L TEAL since Aug '01 92 LS-L YELLOW since Mar '05 |
#14
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Yet again, my wishlist grows even longer...
Congrats, very nice looking. What kind of abuse can stock rods take, as TomSVX i believe shattered his piston on his one car, not the rod. Could the rods take up to 15psi without worry, as long as the pistons can?
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*No SVX at the moment...* 1987 Winnebago Elandan 35' 2001 Yamaha Roadstar 1600 2004 Ford Excursion Eddie Bauer, 6.0litre Power Stroke Diesel - Daily Driver. Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways, scotch in one hand, body thoroughly used up, totally worn out and screaming HOOOOYA !!!!! |
#15
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I think the rods and bearing are good to at least 500 hp. Just don't **** it up
tom |
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