Pistons...
#1
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Pistons...
M-Tuned rods have been ordered. Next step, pistons.
Wiseco 79mm, 8.5:1, $460: Rice Engineering
Supertech 79mm, 8.8:1, $440: Belfab Racing
Discuss.
Wiseco 79mm, 8.5:1, $460: Rice Engineering
Supertech 79mm, 8.8:1, $440: Belfab Racing
Discuss.
#2
Only appreciable difference joe is that you can run slightly less clearance with the supertechs vs the wisecos because of alloy differences. The cr ratio difference as you know is negligible.
I personally am a huge fan of wisecos, but having seen the supertechs in person I can say that they also look like great pieces.
I don't think you can go wrong either way.
I personally am a huge fan of wisecos, but having seen the supertechs in person I can say that they also look like great pieces.
I don't think you can go wrong either way.
#7
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call me crazy but wiseco offers a 79.5 and, lets be honest, you wont be re-boring your block for larger pistons in the future. take the minor bump in displacement. 1660cc
had I not picked my pistons up 2nd hand, I'd probably get the 85.5's for the 1.8...1951cc without a stroker! so what if the cylinder walls are foil thin?
had I not picked my pistons up 2nd hand, I'd probably get the 85.5's for the 1.8...1951cc without a stroker! so what if the cylinder walls are foil thin?
#8
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I'd actually be more inclined towards the 78.5s, which are also made by both Wiseco and Supertech. An extra 0.5mm bore diameter (79.5 vs. 79) buys you a whopping 27 cc (1.6 cubic inches), or an increase of 1.6%. I'm much more concerned about wall thickness, given that the B6ZE is already overbored 7mm beyond the original 71mm of the B3.
#9
It is indeed legitimate. Although the amount is small. I am talking 0.0005-0.001" type of difference. Still that can be the difference between cold slap and no cold slap. Depending on your power level your safe bet on clearance with these pistons is around 0.0035-0.004". Just remember that if you run too much clearance no one will know, run too little and everyone will.
Additionally, The alloy differences also correlate to the ability to withstand pre-detonation. The "softer" alloy of the wisecos can withstand a bad tune more so than the supertechs will be able to because they are "harder". Regardless both will be many times stronger than the stock hyper eutectic pistons.
Additionally, The alloy differences also correlate to the ability to withstand pre-detonation. The "softer" alloy of the wisecos can withstand a bad tune more so than the supertechs will be able to because they are "harder". Regardless both will be many times stronger than the stock hyper eutectic pistons.
#10
Between Wisecos and Supertechs, I had no real preference. I'll never approach the limits of either.
Not to get into the CR issue again, but I had a long talk w/ Marc at ETD Racing before buying my Supertechs (9:1, 84mm.) He strongly suggested close to stock CR (which is 9.5:1 for the 1.8L.)
Regarding bore diameter: the change in piston area is so small that the additional power would be in the order of 2%.
Maybe Marc will chime in w/ some advice.
Not to get into the CR issue again, but I had a long talk w/ Marc at ETD Racing before buying my Supertechs (9:1, 84mm.) He strongly suggested close to stock CR (which is 9.5:1 for the 1.8L.)
Regarding bore diameter: the change in piston area is so small that the additional power would be in the order of 2%.
Maybe Marc will chime in w/ some advice.
#13
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I can't wait to see how much torque you can make out of that little 1.6 with low-comp.
#16
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Joe, unless you are deadset on keeping your GReddy manifold, think about building a 1.8. You can get a longblock with crappy rings for next to nothing, and the 240cc displacement increase is impossible to ignore. Just grab an ETD manifold if you want to keep your GReddy turbo.
I did Supertechs and I have no regrets. 84mm 8.7:1. Car is a little sluggish off boost, but once the turbo is spooled it yanks plenty hard. You can't ignore the torque numbers that low-comp motors are producing.
I did Supertechs and I have no regrets. 84mm 8.7:1. Car is a little sluggish off boost, but once the turbo is spooled it yanks plenty hard. You can't ignore the torque numbers that low-comp motors are producing.
#20
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For starters, I don't want to spend the extra money on another longblock, manifold, etc. By the time you factor everything in, it's probably an additional $1k.
Second, I'm pretty sure my crank timing wheel would hit the swaybar with the longer engine.
And third, I just don't need the displacement.
You're asking this of the guy who does a comprehensive writeup every time he farts?