Subject	Re: Nope. NA heads are the 30p designation. I don't know what
Posted by	Tech@EPR on April 02, 2013 at 1:12 PM
	This message has been viewed 596 times.
In Reply To	Nope. NA heads are the 30p designation. I don't know what posted by ConVerTT on April 01, 2013 at 10:39 PM
Message	Port volume is the same. The port divider is more towards the flange (essentially higher in the port) than the 40P or TT heads. The port angle is also steeper on the NA heads as well, meaning they are steeper and more straight up and down. For a forced induction application the NA head is actually better suited than the 40P heads. Line of site is more direct on the 30P castings. I've used a few NA heads in some turbo builds and they've done quite well and made just as much power if not more as the TT heads. Mind you both the TT heads and the NA heads I speak of were both ported. I've not had a chance to run stock modified heads (cams/springs) on stock valves to compare between the two variants. Hope that helps Ep Racing | Create Your Badge
Follow Ups	VG30DE - Manley Rods + CP Pistons - NA $100? - evan_aggie 13:34:24 04/01/13 Do it. (n/m) - TriniTT 13:45:37 04/01/13 Do what though? Keep the block + heads as spares and - evan_aggie 13:55:52 04/01/13 I'd do what you suggested, pull it apart to inspect it. - TriniTT 15:06:36 04/01/13 Build a NA spray motor with it. (n/m) - Schmeal 15:15:48 04/01/13 make a table - fuzzymonkey 17:05:57 04/01/13 you guys are all the little red guy on my left shoulder. - evan_aggie 17:09:58 04/01/13 come to the bright side. - fuzzymonkey 17:51:05 04/01/13 The devil is keeping it to use it, and the angel is part it - TriniTT 19:52:51 04/01/13 A high compression with aftermarket pistons is still viable - ZinnZ32 15:13:18 04/01/13 I would take the block apart, keep the rods, sell the CP's - ZXoltan 16:07:43 04/01/13 Well, when you put it that way, now I have to buy it. I - evan_aggie 16:37:21 04/01/13 Re: VG30DE - Manley Rods + CP Pistons - NA $100? - Tech@EPR 19:28:23 04/01/13 I just assumed they were design to a certain specification - evan_aggie 20:05:34 04/01/13 Re: I just assumed they were design to a certain specification - Tech@EPR 20:33:59 04/01/13 Well, "perfectly built" with NA heads... - ConVerTT 22:14:47 04/01/13 Heads different? I thought they were the same. (n/m) - evan_aggie 22:35:19 04/01/13 Nope. NA heads are the 30p designation. I don't know what - ConVerTT 22:39:45 04/01/13 Re: Nope. NA heads are the 30p designation. I don't know what - Tech@EPR 13:12:21 04/02/13 Hmmm. Good intel. Thanks... - ConVerTT 16:28:54 04/03/13 Think of it like $100 in tuition ... - ConVerTT 22:10:21 04/01/13 If the heads are fresh, there's another $100 for you ;-) - ZXoltan 06:41:39 04/02/13
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