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September 5th, 2006, 04:10 PM
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TRW Turbo Hypereutectic Pistons
I am in need of input regarding the current turbo hypereutectic pistons offered by TRW. Looking at installing these in a production 4.1 Buick motor instead of custom pistons due to a tight budget. Any of you using these pistons in your engine? What is the max boost you can safely go using these hyper pistons? Anybody in the low 11's or high 10's using these pistons?
    
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September 5th, 2006, 06:40 PM
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Get The Trw Forged Not Much More
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1987 Buick Grand National.BoostJunkie 30 over 109, Forged Pistons, 204/214 cam, BB.TE-60, 50# MSD Inj., Razors Alky kit, 24 Row Stretched Intercooler, THDP. LS-1 Maf ,Translator, Ultraflows, Hotwired Walbro 340, Billit Regulator, Rjc valve and plate, BoostJunkie 200r4, Pats 3200 10" lock up, 93 Alky Tweak Chip. Vacuum Brakes with S-10n's, Alum. Brake Drums. Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. POSTONS TRUNK KIT  best ET ON TA-49 IS 11.62@114.00. 1.609 60' 25# of boost 27/24. 93 octane and alky 9# launch. Brian Roman
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September 5th, 2006, 06:43 PM
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As far as I know, TRW does not offer forged pistons for the Buick 4.1 (252) engine. Please correct me if I'm wrong.
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September 5th, 2006, 06:44 PM
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You Maybe Right
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1987 Buick Grand National.BoostJunkie 30 over 109, Forged Pistons, 204/214 cam, BB.TE-60, 50# MSD Inj., Razors Alky kit, 24 Row Stretched Intercooler, THDP. LS-1 Maf ,Translator, Ultraflows, Hotwired Walbro 340, Billit Regulator, Rjc valve and plate, BoostJunkie 200r4, Pats 3200 10" lock up, 93 Alky Tweak Chip. Vacuum Brakes with S-10n's, Alum. Brake Drums. Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. POSTONS TRUNK KIT best ET ON TA-49 IS 11.62@114.00. 1.609 60' 25# of boost 27/24. 93 octane and alky 9# launch. Brian Roman
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September 6th, 2006, 07:09 AM
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The TRW hypers are a stout peice, but as with any hyper piston they are brittle and have a tendancy to self destruct when subject to detonation. I have a customer that has gone low 10's in his GN with them, but his tune up is dead on. I think for the power you are looking to make,you will be fine with them provided the tune up is good,But I would recommend a forged piston if you can afford it ,just because they are more forgiving, and for peace of mind. Andrew
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Powerhouse Machine-Racing Engines & Cylinder Heads 508-328-9884 www.Powerhousemachine.net
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September 6th, 2006, 02:33 PM
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Call Kenny Duttweiler. He'll know where to send you. He built my uncles 10.0 sec buick engine. It had a 4.1 N/A motor....actually I think it was like a 272 cube motor, that spun 10,000 rpm through the traps. I doubt those were hypers. Many of you know this car as the N/A buick regal cop car. He sold it to some sheriff back in the early 90's who turned it into a black and white. It used to be red.
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September 6th, 2006, 04:08 PM
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I have them in my car for 3 years now 24psi of boost on Alky and they are fine. It's all about the tune. Just don't run lean you'll be fine. Look up Banning on tbs.com in the MAGNA section. He's been beating the balls out of those pistons in the 10's for some time now. I like em!
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Jim from NE Philly 87 Buick Grand National w/ all the typical mods. Fresh rebuilt everything! 86 Buick Grand National Astroroof. 82K Sexy Stocker! 89 Turbo Trans AM #396 w/ 30K on it. T-tops leather. Featured in Hemmings Muscle Machines. Feb. 06 issue #29  http://turbobuicks.net/gallery2/v/Philly/ Pennsylvania State Representative for MAGNA Join Today! http://www.magnabuick.com/ TTA owners sign in.. http://www.turbotransam.com
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