How much NOS can be used w/Hyperutecnic pistons

Alex89GT · 01-18-2002, 12:47 PM

I really want to get NOS for this upcoming summer, but the engine was rebuilt to a 306 w/hyperutecnic pistons and otherwise is completly stock. How much can I spray without blowing a piston?

91GTturbo · 01-18-2002, 02:44 PM

With the proper amount of fuel and timing pulled, you shouldn't have any problems, regardless of your pistons. Someone's going to disagree, but I have several friends spraying a 150 shot for many miles now and they haven't had any problems. A friend of mine makes a little over 400 rwhp with a turbo kit on a 93'. He has heads, intake, the usual, but the bottom end has never been apart.

Stang Runner · 01-18-2002, 03:33 PM

I would not good over a 150hp shot if I was you.

exgmguy · 01-18-2002, 04:35 PM

Those pistons will probably take even more than 150, but with the hyper pistons, you only go lean or detonate once.

I've melted the tips off many a spark plug and my forged piston bottom end is still rock solid.

speedytang · 01-18-2002, 08:01 PM

I have setup many cars with hyper pistons just run a wet kit and 150 is not a problem and 175 has been in two cars now three years and combined close to 80 bottles have been filled with not a problem. I always have guys who sell the dry kits for a wet kit but never a wet kit for a dry kit. The wet kits are always on the rich side to start with.

Idhomustang · 01-18-2002, 11:12 PM

I wrote a letter to KB-pistons on this subject a couple of years ago, they said go for it, make sure your not going lean and retard your timing. Of course they are selling parts and not worried to much amount how costly a melt down could be. I asked about a 200 hp shot, they didn't seem to concerned..

Mac.

01-18-2002, 12:47 PM	#1
Alex89GT Registered Member Join Date: May 2000 Location: edmonton Posts: 24	How much NOS can be used w/Hyperutecnic pistons I really want to get NOS for this upcoming summer, but the engine was rebuilt to a 306 w/hyperutecnic pistons and otherwise is completly stock. How much can I spray without blowing a piston?

01-18-2002, 02:44 PM	#2
91GTturbo Registered Member Join Date: May 2001 Location: Valdese, NC Posts: 361	With the proper amount of fuel and timing pulled, you shouldn't have any problems, regardless of your pistons. Someone's going to disagree, but I have several friends spraying a 150 shot for many miles now and they haven't had any problems. A friend of mine makes a little over 400 rwhp with a turbo kit on a 93'. He has heads, intake, the usual, but the bottom end has never been apart. __________________ 91 single turbo vert

01-18-2002, 03:33 PM	#3
Stang Runner Registered Member Join Date: Jun 1999 Location: Walker, MI, USA Posts: 1,202	I would not good over a 150hp shot if I was you. __________________ Engine: steel mounts, Under drive pulleys, K&N, GT-40 Intake ported Lower, No power steering, No A/C, Mac cold intake, 65MM TB, 255 Fuel pump, 24's, AFR 165 58cc, Rocker Arms 1.7with the stock Cam, 1 5/8 short headers, offRoad X-pipe Drive Train: 3.55, T-5 with a Pro 5.0 shifter 12.656@107.71MPH See It at www.T-racing.com/mustang.htm

01-18-2002, 11:12 PM	#6
Idhomustang Registered Member Join Date: Sep 1999 Location: boise,idaho Posts: 220	Nitrous What else? I wrote a letter to KB-pistons on this subject a couple of years ago, they said go for it, make sure your not going lean and retard your timing. Of course they are selling parts and not worried to much amount how costly a melt down could be. I asked about a 200 hp shot, they didn't seem to concerned.. Mac. __________________ 393,9.5" 351W,830 Holley,Victor Jr,Home made Cool Air Pan, Pro Billet MSD, MSD 6AL, XE 284H Xtr-Com cam, 240-246 @.050, 540-544, M/T Et streets, Mac Upper and Lower, Control Arms, 3:73 US Gear,Mini Spool, Eagle Long rods, Mac Windage tray, KB Pistons, Scat crank, 4000 rpm stall convertor, C-4 trans, Airflow Research 185cc, Hooker long tubes 3", exhaust, S&W 6 point roll cage, 11.2 at 121 mph.

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01-18-2002, 04:35 PM	#4
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Those pistons will probably take even more than 150, but with the hyper pistons, you only go lean or detonate once. I've melted the tips off many a spark plug and my forged piston bottom end is still rock solid.

01-18-2002, 08:01 PM	#5
speedytang Registered Member Join Date: Oct 1999 Location: Marengo, Ohio.USA Posts: 135	I have setup many cars with hyper pistons just run a wet kit and 150 is not a problem and 175 has been in two cars now three years and combined close to 80 bottles have been filled with not a problem. I always have guys who sell the dry kits for a wet kit but never a wet kit for a dry kit. The wet kits are always on the rich side to start with.