Subject	In the case of the ATK motor it was N/A heads on a TT
Posted by	Kyle(Houston) on May 22, 2013 at 8:17 AM
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In Reply To	People Brag about TT heads. Why grind it off? posted by Cjw3 on May 21, 2013 at 10:07 PM
Message	The problem with that is they also left in the stamped 30 N/A exhaust valves which are not Inconel like what is in the TT heads(stamped 40). This may not present a problem on a stock turbo car but for someone who is using bigger turbos and pushing the limits this could cause some valve issues. As far as the port sizes I have never personally measured them so I can not comment. I was always under the assumption that they were smaller. But Mitch at EP Racing said he has found that they are the same(mind you after porting) and he has used the 30P N/A heads on some of his TT builds. I am sure he switched out the exhaust valves though. LaZy Link So for the OP I would take the heads off and check the valves to see if they are the stamped 30 N/A valves and have them changed out if they are. Kyle "Grumpy Bear" Puckett Import Parts Pro Phone: 281-288-0700 AIM: KyleatIPP Yahoo: KyleatIPP
Follow Ups	Numbers/Letters on side of cylinder head - beaverretriever 15:57:29 05/21/13 Is the motor in or out of the car? Is your car TT or N/A? - Kyle(Houston) 17:36:11 05/21/13 Re: Is the motor in or out of the car? Is your car TT or N/A? - beaverretriever 17:53:46 05/21/13 More then likely the heads are from a N/A - Kyle(Houston) 18:14:20 05/21/13 Here are some pictures from said motor just for reference - Kyle(Houston) 19:59:45 05/21/13 Lets see pictures of the head Intake Port at the Injector - Cjw3 21:32:27 05/21/13 I don't have pictures of ports but they were early style (n/m) - Kyle(Houston) 21:45:12 05/21/13 People Brag about TT heads. Why grind it off? - Cjw3 22:07:16 05/21/13 In the case of the ATK motor it was N/A heads on a TT - Kyle(Houston) 08:17:53 05/22/13 not that hard to melt NA valves even on stock turbos (n/m) - Antihero 09:33:56 05/22/13 Yeap...hence why I said *may* not present problem (n/m) - Kyle(Houston) 10:03:22 05/22/13 Dont forget about 10Y for late NA, and 48P for late TT (n/m) - KongZTT GT28RS MD 20:28:41 05/21/13 Thanks...I was assumimg it was an early model (n/m) - Kyle(Houston) 20:53:32 05/21/13 figured that.. I was just pointing out for others (n/m) - KongZTT GT28RS MD 21:31:58 05/21/13 Did you get the Email I sent you?? - Kyle(Houston) 14:47:06 05/22/13 Re: Is the motor in or out of the car? Is your car TT or N/A? - beaverretriever 17:55:25 05/21/13 Re: Numbers/Letters on side of cylinder head - beaverretriever 01:48:51 05/23/13
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