If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
proceed to the Forums area and select the forum that you want to visit.
I have yet to see a problem with the stock rods on anyones boosted engine.
I have seen plenty of trashed pistons on other boosted cars. never seen a bad rod in a LQ1 or a L67/32. but its wiser to build the engine the right way the first time then to tear it apart and rebuild a couple of times.. Im guessing tim went the custom route to know he has a perfect fit the first time. That and he is a baller! and now has bragging rights for the most modified custom LQ1..... and hopefully when done the most powerfull daily driven LQ1 as well...
S
Shane "RedZMonte" 2004 Corvette Z06 Commemorative Edition-VIRGIN 1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
-Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors 2004 Subaru WRX STI -Lightly Modded (SOLD) 1994 Lumina Z34 -VIRGIN (SOLD) 1992 Lumina Z34-VIRGIN (RIP) 1992 L67 Lumina Z34 (SOLD) 1990 Turbo Grand Prix (SOLD)
I have seen plenty of trashed pistons on other boosted cars. never seen a bad rod in a LQ1 or a L67/32. but its wiser to build the engine the right way the first time then to tear it apart and rebuild a couple of times.. Im guessing tim went the custom route to know he has a perfect fit the first time. That and he is a baller! and now has bragging rights for the most modified custom LQ1..... and hopefully when done the most powerfull daily driven LQ1 as well...
S
Cost effectiveness is an important part of the build for me, I have to limit custom parts to what's absolutely necessary and given the relatively low cost of highperformance aftermarket chevy rods I'm curious about the choice to go with the custom rod instead that appears costs considerably more than the chevy option.
I plan on purchasing forged pistons for my 3900 swap later as a back up but I'm going to tune the stock engine along with a cam upgrade and a port and polish to reach my power goal at a moderate boost level, 400 hp/ 400 lb/ft @ 6500 rpm on 10 psi. Desktop Dyno shows 483 hp, 390 lb/ft @6500 but the baseline was about 20 hp lower than stock pwr output so I believe that's a safe estimate. That's more than enough power for a 2700 lb car.
That piston damage appears to be from severe detonation as opposed to stress overload during normal operation above its limits. It looks like the damaged area is the result of a projectile impact.
The aftermarket SBC rods I liked were $600+ per set and would then need hundreds of dollars of custom work. They also seemed to peak at 500-600 horsepower for a V8. I want that much from a V6. Those considerations led me to go fully custom (same cost, weaker rod, plus custom/unreliable mods to the rod). I have Pauters in my S2000 and they have been able to withstand 440+ whp on a 4 cylinder. There are S2000's using them past 700 whp. Based on that track record, I thought that I couldn't lose. They are expensive, but doing it right the first time is ALWAYS cheaper than doing it right the second time.
Comment