vtec4max

How much power can I expect out of my stock rods fastened with ARP bolts? what's the highest you guys have seen?

crxnj

there are 400whp motors here in nj..

vtec4max

I would assume that with boost right?

crxnj

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec_avenue &raquo;</TD></TR><TR><TD CLASS="quote">I would assume that with boost right?</TD></TR></TABLE>

Yes. completly stock bottoms,minor headwork or vtec head conversion,and turbo.

EK FLY

jason hunt tuned my friend ls/vtec ek hatch about 3 weeks ago made 509 whp on 21 psi
t67 ,c16 and all that

vtec4max

and that's with LS rods? do you happend to know what he had done to it besides boost? I would assume that's with ARP bolts right?

EK FLY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec_avenue &raquo;</TD></TR><TR><TD CLASS="quote">and that's with LS rods? do you happend to know what he had done to it besides boost? I would assume that's with ARP bolts right? </TD></TR></TABLE>


on stock rods bolts

vtec4max

that engine must be very well tuned...***** that's a killing of horse power....

RC000E

Well, to be honest, arp's were more of a demand for ls/vtecs due to revving the motor. When the piston approaches and crosses tdc from the exhaust stroke, there is little pressure on the piston so inertia makes the piston/rod combo want to continue skyward. This is the phase where the rod bolts are tested.

Putting alot of pressure on the piston from the intake to compression phase (tdc) basically gets distributed by the rod to the bearing and the crank throw. The rod bolts aren't playing as large a role in holding the assembly together.

Making big power basically places alot of stress right below the wrist pin on a rod and S bend them when overloaded. Rod bolts hold the assembly together at high rpms when there is little pressure in the cylinder and the rod/piston combo is at tdc.

EK FLY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec_avenue &raquo;</TD></TR><TR><TD CLASS="quote">that engine must be very well tuned...***** that's a killing of horse power....</TD></TR></TABLE>


jason is the best tuner on the east coast

vtec4max

so what do you guys and gal if theres any, think i should do, just go with my stock LS rods or should I upgrade them? I do plan on running boost but will limit it to 12 PSI with ITR pistons. I'm going to decked out my block and head just a hair or two just to make damn sure i have good mating surfaces for a peace of mind. but running boost on ITR pistons, am i crazy? please let me know. remember max out at 12PSI

TheShodan

iTrader: (14)

maxing out at 12psi means nothing. What hp goals are you trying to obtain? How? which turbo? what injectors? These things assist in reaching many goals. If you plan to tear apart the block anyway, why not upgrade for extra insurance?

vtec4max

well, I believe that with 12PSI boost with high compression I can build a little 4 banger monster for me to toy around with. I believe If with the right setup I can hopfully reach about 320HP and that's more than enough for me. It's not for no competition, it's like a trophy from myself to myself. to be honest, I don't really know what the setup is but I do know that boost pressure has different effect with different size of turbo. right now, just trying to build my LSV on a budget, turbo later.


Modified by vtec_avenue at 6:01 PM 12/24/2006

RC000E

I personally wouldn't go with the Type R pistons...I spend that money elsewhere. The higher compression is going to make tuning just that much more critical. LS's (bottom ends) have been boosted and put down in excess of 320whp bone stock by many, many people...myself included. The compression obviously gives you a better "out of boost" experience, but detontation will simply kill a stock piston if you ring it hard. The higher compression simply isn't needed IMO.

HiProfile

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec_avenue &raquo;</TD></TR><TR><TD CLASS="quote">well, I believe that with 12PSI boost with high compression I can build a little 4 banger monster for me to toy around with. I believe If with the right setup I can hopfully reach about 320HP and that's more than enough for me. It's not for no competition, it's like a trophy from myself to myself. to be honest, I don't really know what the setup is but I do know that boost pressure has different effect with different size of turbo. right now, just trying to build my LSV on a budget, turbo later.</TD></TR></TABLE>

8:1 LSV with a 60trim straight T3 could give you low 300's with the right tuning - ~11:1 with a more common size turbo at 12psi will just be a bitch to keep from pinging. The only way I'd suggest that combo is if its a track-only car that you always keep filled with 100+ octane fuel. 93 octane would be fine if you can always keep a wideband in it and run a very conservative tune. Its ESPECIALLY important because you plan on using OEM cast pistons too. ANY bit of detonation at 300whp will definately crack your ringlands.

Basicly going from 9:1 to 11:1 or 12:1 will net you all of 10-20whp at the most with an NA motor. If its going to see boost, then that little extra NA whp is just pointless. Do what you want, I'm just sick of people boosting in WI because its a fad, not because they have intimate knowledge of turbocharging - and blowing their **** up a month later.

vtec4max

you have a very good point it make sense

vtec4max

ttt