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SharpByCoop · 01-08-2013, 10:20 AM

I ran the OEM components up to 591 hp and at that point the rods bent like an S. Fortunately no damage, but that happened. 550 is really close to that.

Lower end built to exactly your query: K1 rods, ARP studs, OEM gaskets and bearings, and Wiseco 9.0:1 pistons. Had the rotating assembly/pistons/rods balanced as well.

This has the ability to sustain more than 600whp now, with upgraded fuel components (which I also did.)

I thought the 9:1 pistons would be doggish. No way. The engine has SO much torque that after the tuner added ignition timing there, it drives as responsive as it used to. Not a notable loss at partial throttle.

My experience. It also costs a FORTUNE to remove engine to do all this. I would lock it at 525whp and ride into the sunset if you don't plan on pushing further.

Coop

01-08-2013, 10:20 AM	#31 (permalink)
SharpByCoop Enthusiast Member Join Date: Sep 2010 Location: Connecticut Posts: 286 Drives: '08 G37S - Graphite Rep Power: 15	I ran the OEM components up to 591 hp and at that point the rods bent like an S. Fortunately no damage, but that happened. 550 is really close to that. Lower end built to exactly your query: K1 rods, ARP studs, OEM gaskets and bearings, and Wiseco 9.0:1 pistons. Had the rotating assembly/pistons/rods balanced as well. This has the ability to sustain more than 600whp now, with upgraded fuel components (which I also did.) I thought the 9:1 pistons would be doggish. No way. The engine has SO much torque that after the tuner added ignition timing there, it drives as responsive as it used to. Not a notable loss at partial throttle. My experience. It also costs a FORTUNE to remove engine to do all this. I would lock it at 525whp and ride into the sunset if you don't plan on pushing further. Coop __________________ Jim Cooper - (Retired: '08 Infiniti G37 Sport • TheShopCT built • 11.13 @ 123 mph (click for vid) • GTM Stage II Twin Turbo • 5-speed A/T Level Ten built • 591whp @17 lbs boost)