how much whp?

seans-fbp-si · 07-23-2007, 05:38 PM

what would be an estimate of wheel hp if someone had these parts on an si

PARTS: Forged Pistons, Forged Rods, SS Valves, Valve Seals, Main Bearings, Rod Bearings, Oil pump, Water pump, Cam seals, Timing belt, Head-gasket, Oil pan gasket, Oil pick-up tube gasket, fujita sri, skunk2 60mm exhaust..

i found a place in new hampshire that has this all in a package for our Si's

truflip · 07-23-2007, 05:43 PM

If you count the threads you've started in the last month, the WHP you gain from those parts wont even come close

quality_sound · 07-23-2007, 05:55 PM

not to mention nothing but the sri and the exhaust would make more power anyway. the rest is just making the internals stronger.

06Si_LoveR · 07-23-2007, 05:58 PM

why would they offer a package like that for a car w/ no EMS is beyond me... you can't possibly pull the true power from everything w/o tuning the car

Cuban Si · 07-23-2007, 05:59 PM

sadly the most u see out of all that is bout 185 - 190 TOPS! dont kill the piggy like that... not till later at least when the ret is needed.

ouija · 07-23-2007, 06:07 PM

Why do people think forged piston heads and rods automatically increase horsepower?

While lighter piston heads/rods and better rod bearings can free up hp, all it does is make your engine stronger.

Now if you're talking different style piston heads you can gain some power.

RANGERSi07 · 07-23-2007, 06:09 PM

stroke that motor

damnu · 07-23-2007, 06:12 PM

i would say about -30hp off of stock

***Freq18hz*** · 07-23-2007, 06:21 PM

Quote:

Originally Posted by seans-fbp-si

what would be an estimate of wheel hp if someone had these parts on an si

PARTS: Forged Pistons, Forged Rods, SS Valves, Valve Seals, Main Bearings, Rod Bearings, Oil pump, Water pump, Cam seals, Timing belt, Head-gasket, Oil pan gasket, Oil pick-up tube gasket, fujita sri, skunk2 60mm exhaust..

i found a place in new hampshire that has this all in a package for our Si's

Pretty much nothing extra. The motor might last 300k miles or longer though.

Pretty much all those modifications just reinforce the motor from wear. If you wanted more performance, youd need to increase the displacement, lower the compression, etc.

-Freq

slostjoe · 07-23-2007, 06:49 PM

The only parts on that list that could even get power at all would be Intake and Exhaust

Jardiniboy · 07-23-2007, 08:53 PM

Is the pistons ment for N/A or boost?

***FijiPhil*** · 07-23-2007, 08:58 PM

waste of money. unless ur building up the engine its pointless.

BATANG CITY JAIL · 07-23-2007, 09:05 PM

id say 285 whp..

***Sirbelch*** · 07-23-2007, 11:08 PM

If the Pistons increase compression ratio and you put in stiffer valve springs with cams that have a higher lift and more duration and polish that head, AND get something that can tune it, I'd agree with Batang's 285

iknowmysh1t · 07-23-2007, 11:27 PM

forged pistons and all that other stuff is just to get your car ready for a turbo setup. then you can run full bosst pretty much.

***CaliGuy*** · 07-23-2007, 11:30 PM

At least 500 whp, at least! Do it!

damnu · 07-24-2007, 12:29 AM

the thing is, he said forged pistons, which means forced induction basically, theres no point in running forged pistons for NA. So im guessing either 9.5 or 8.5 to 1 compression, ideally of course. Which for the mods he listed, would LOWER hp.

Asif22 · 07-24-2007, 12:31 AM

I saw a build on an rsx-s and they gained 90hp with pistons and rods...not sure style piston or anything...But i would think that would free stuff up and just make the engine stronger

mO 64 StAnG 06 · 07-24-2007, 12:59 AM

Quote:

Originally Posted by Freq18hz

lower the compression

-Freq

How would that make you gain more HP on a N/A motor?

adamhoud · 07-24-2007, 01:29 AM

It wouldn't.

07-23-2007, 05:38 PM	#1 (permalink)
seans-fbp-si Senior Member Join Date: Apr 2007 Location: Raynham, MA Age: 23 Posts: 817 Sean iTrader: 0 / 0%	how much whp? what would be an estimate of wheel hp if someone had these parts on an si PARTS: Forged Pistons, Forged Rods, SS Valves, Valve Seals, Main Bearings, Rod Bearings, Oil pump, Water pump, Cam seals, Timing belt, Head-gasket, Oil pan gasket, Oil pick-up tube gasket, fujita sri, skunk2 60mm exhaust.. i found a place in new hampshire that has this all in a package for our Si's

07-23-2007, 08:58 PM	#12 (permalink)
*FijiPhil* ZILLLAAAAAA!!!!!!!!!! Join Date: Jun 2007 Location: Tampa Age: 19 Posts: 2,426 Phil iTrader: 0 / 0%	waste of money. unless ur building up the engine its pointless. __________________ FG Squad Member #382 Tampa Crew Member #3 15% Tint///JDM FD2 Shift knob///JDM Red H emblems///Injen CAI Join the forum where you can exercise freedom of speech and say what you want -----------> http://tampastreetracing.lefora.com/forum/

07-23-2007, 11:30 PM	#16 (permalink)
*CaliGuy* VIP Member Join Date: May 2006 Location: SoCal Age: 30 Posts: 10,520 J. M. back by popular demand! iTrader: 4 / 100%	At least 500 whp, at least! Do it! __________________ Visit my city! Free vagin for every resident (in direct contrast to the other cities that only provide free Fleshlites!) http://eat-mykhram.myminicity.com/

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07-23-2007, 05:43 PM	#2 (permalink)
truflip Senior Member Join Date: Dec 2006 Location: Ottawa, ON Age: 22 Posts: 7,617 iTrader: 11 / 100%	If you count the threads you've started in the last month, the WHP you gain from those parts wont even come close

07-23-2007, 05:55 PM	#3 (permalink)
quality_sound Senior Member Join Date: Jul 2007 Location: Beale AFB, CA Age: 33 Posts: 707 Paul iTrader: 1 / 100%	not to mention nothing but the sri and the exhaust would make more power anyway. the rest is just making the internals stronger.

07-23-2007, 05:58 PM	#4 (permalink)
06Si_LoveR Senior Member Join Date: Nov 2005 Location: Baton Rouge Age: 26 Posts: 1,505 Shuzoku 4 Life iTrader: 3 / 100%	why would they offer a package like that for a car w/ no EMS is beyond me... you can't possibly pull the true power from everything w/o tuning the car

07-23-2007, 05:59 PM	#5 (permalink)
Cuban Si Senior Member Join Date: Aug 2006 Location: Melbourne, Fl Posts: 238 iTrader: 0 / 0%	sadly the most u see out of all that is bout 185 - 190 TOPS! dont kill the piggy like that... not till later at least when the ret is needed.

07-23-2007, 06:07 PM	#6 (permalink)
ouija Senior Member Join Date: Jun 2007 Location: Enfield/Windosr Locks, CT Age: 22 Posts: 300 Jason iTrader: 0 / 0%	Why do people think forged piston heads and rods automatically increase horsepower? While lighter piston heads/rods and better rod bearings can free up hp, all it does is make your engine stronger. Now if you're talking different style piston heads you can gain some power.

07-23-2007, 06:09 PM	#7 (permalink)
RANGERSi07 Senior Member Join Date: Dec 2006 Location: NC/CT/GA Posts: 500 iTrader: 0 / 0%	stroke that motor

07-23-2007, 06:12 PM	#8 (permalink)
damnu Senior Member Join Date: Mar 2007 Location: West Covina Posts: 277 iTrader: 1 / 100%	i would say about -30hp off of stock

07-23-2007, 06:49 PM	#10 (permalink)
slostjoe Senior Member Join Date: Apr 2007 Location: Springfield, MO Posts: 3,804 Skyler iTrader: 3 / 80%	The only parts on that list that could even get power at all would be Intake and Exhaust

07-23-2007, 08:53 PM	#11 (permalink)
Jardiniboy Senior Member Join Date: Jan 2007 Location: Waipahu, Hawaii Posts: 3,789 Jasten iTrader: 2 / 100%	Is the pistons ment for N/A or boost?

07-23-2007, 09:05 PM	#13 (permalink)
BATANG CITY JAIL Senior Member Join Date: Jul 2006 Location: Durham, NC..£╖╒◙o├æ Posts: 8,316 iTrader: 10 / 100%	id say 285 whp..

07-23-2007, 11:08 PM	#14 (permalink)
*Sirbelch* Louder than 4 F404-GE-400 Join Date: Jan 2007 Location: Vacaville CA Age: 26 Posts: 5,542 Paul iTrader: 1 / 100%	If the Pistons increase compression ratio and you put in stiffer valve springs with cams that have a higher lift and more duration and polish that head, AND get something that can tune it, I'd agree with Batang's 285

07-23-2007, 11:27 PM	#15 (permalink)
iknowmysh1t Senior Member Join Date: Mar 2007 Posts: 973 iTrader: 0 / 0%	forged pistons and all that other stuff is just to get your car ready for a turbo setup. then you can run full bosst pretty much.

07-24-2007, 12:29 AM	#17 (permalink)
damnu Senior Member Join Date: Mar 2007 Location: West Covina Posts: 277 iTrader: 1 / 100%	the thing is, he said forged pistons, which means forced induction basically, theres no point in running forged pistons for NA. So im guessing either 9.5 or 8.5 to 1 compression, ideally of course. Which for the mods he listed, would LOWER hp.

07-24-2007, 12:31 AM	#18 (permalink)
Asif22 Senior Member Join Date: Jul 2007 Location: United States Posts: 2,300 Mohamed El-Mubaslat iTrader: 0 / 0%	I saw a build on an rsx-s and they gained 90hp with pistons and rods...not sure style piston or anything...But i would think that would free stuff up and just make the engine stronger

07-24-2007, 01:29 AM	#20 (permalink)
adamhoud Senior Member Join Date: Sep 2006 Location: Bay Area, CA Posts: 1,031 Adam iTrader: 3 / 100%	It wouldn't.