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*Jeff240sx* · 06-28-2005, 07:12 PM

I don't think I'm on the high side. Mattback's crappy running '91 got a dyno tune by Scott (enthalpy) and made 160whp 150tq. I dropped about 10whp from this number guesstimating about a off the shelf JWT tune. Numerous dynos have shown 3" exhausts to give 10-15rwhp - SCC magazine and Alex from FA both repeated these power gains. Search FA for his independant dyno. Header and intake should give ~5whp each, simply due to how much the KA likes to breathe (the reason for the massive exhaust gain). 5hp from the s13 cams has to be a low estimate, or people wouldn't be buying the cams for $150/pair and spending 4 hours installing them. TY from FA showed something huge.. like 15-20hp at 300hp on his KA-T. If you already have a s13, removing the butterflies will give the same power gains (s13/s14 have the same hp, and s14 has mild cams. The intake manifold, mainly the lack of butterflies, is this difference).
I haven't seen a dyno on a Unorthodox pulley, but I know that underdriving gives massive gains on v8s. 5hp is very reasonable, I believe. 185rwhp for (600 ecu, 500 exhaust, 400 header/intake, 150 cams, 150 pulley) $1800.
Then, with machine work, SOHC slugs increase 1.6:1 cr. That's 8% increase, or 14.8whp at 185hp. That puts a NA KA at 200whp. Then, dyno tuned ecu or standalone will give back the 10whp I removed above (see Matts car). Aftermarket cams - PDM showed 15-20whp gains with theirs.. 220whp is doable fairly easily. But it'll cost about $3000.
RBS14 - How about rather than calling me wrong, you prove where I overestimated. I didn't do the math on the SOHC pistons, and said 20hp, and it was 15. OMGSUEME.
I really hate being called wrong without anything to back yourself up. I am actually using numbers I've seen, and being fairly conservative. Because everything working together makes more power than the sum of their parts. The cams will make more power as engine hp rises. Same with the high comp pistons.
-Jeff

06-28-2005, 07:12 PM	#18
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0)	I don't think I'm on the high side. Mattback's crappy running '91 got a dyno tune by Scott (enthalpy) and made 160whp 150tq. I dropped about 10whp from this number guesstimating about a off the shelf JWT tune. Numerous dynos have shown 3" exhausts to give 10-15rwhp - SCC magazine and Alex from FA both repeated these power gains. Search FA for his independant dyno. Header and intake should give ~5whp each, simply due to how much the KA likes to breathe (the reason for the massive exhaust gain). 5hp from the s13 cams has to be a low estimate, or people wouldn't be buying the cams for $150/pair and spending 4 hours installing them. TY from FA showed something huge.. like 15-20hp at 300hp on his KA-T. If you already have a s13, removing the butterflies will give the same power gains (s13/s14 have the same hp, and s14 has mild cams. The intake manifold, mainly the lack of butterflies, is this difference). I haven't seen a dyno on a Unorthodox pulley, but I know that underdriving gives massive gains on v8s. 5hp is very reasonable, I believe. 185rwhp for (600 ecu, 500 exhaust, 400 header/intake, 150 cams, 150 pulley) $1800. Then, with machine work, SOHC slugs increase 1.6:1 cr. That's 8% increase, or 14.8whp at 185hp. That puts a NA KA at 200whp. Then, dyno tuned ecu or standalone will give back the 10whp I removed above (see Matts car). Aftermarket cams - PDM showed 15-20whp gains with theirs.. 220whp is doable fairly easily. But it'll cost about $3000. RBS14 - How about rather than calling me wrong, you prove where I overestimated. I didn't do the math on the SOHC pistons, and said 20hp, and it was 15. OMGSUEME. I really hate being called wrong without anything to back yourself up. I am actually using numbers I've seen, and being fairly conservative. Because everything working together makes more power than the sum of their parts. The cams will make more power as engine hp rises. Same with the high comp pistons. -Jeff __________________ Whatup?