Subject	Sounds very interesting to me.
Posted by	Boosted1 on January 19, 2023 at 4:40 AM
	This message has been viewed 236 times.
In Reply To	CZP's new cast Bellmouth DPs... Thoughts? posted by KevinsFairlady on January 16, 2023 at 11:01 AM
Message	Their add indicates they are CAST Stainless, not welded tubing. Their description of boost creep on cars with major breathing mods is very accurate IMO. I am a huge SZ fan, however I experienced exactly what's in the CZP description. My car was tuned to 600whp on race gas. On the dyne with no wheel spin and gradual rpm build up there seemed to be no issue. However, on the street, when increasing rpm more quickly ( like with some tire spin ), I had boost creep and lost an engine. The fix was to remove the divider between the wastegate tube and the main tube. A quick fix. Since then, after replacing my engine, I have never attempted to run race gas & high boost again. Just not worth the headache. So these downpipes make sense to me. And the fact that they are cast means they are potentially more dimensionally consistent. Key word, potentially... src="http://i272.photobucket.com/albums/jj168/btskaggs/IphonepicsJuly1 0094.jpg" border="0" alt="Dynorun">
Follow Ups	CZP's new cast Bellmouth DPs... Thoughts? - KevinsFairlady 11:01:03 01/16/23 no 4 bolt, no care. (n/m) - Adam (NoVA) 13:12:04 01/16/23 "period correct" (n/m) - Zeus 11:59:17 01/17/23 They look alright - Drk93TT 14:39:00 01/16/23 Cost seems a bit high. They're a much less labor-intensive - Woodnutz (PA) 12:30:41 01/18/23 I was thinking the same, however it's probably reflective of - black300zx 14:29:36 01/18/23 Current SZ prices are in the same neighborhood. (n/m) - Denis 16:11:51 01/18/23 Sounds very interesting to me. - Boosted1 04:40:06 01/19/23 Interesting - Drk93TT 08:24:48 01/19/23 It was years ago so i don't have the dyno - Boosted1 18:12:44 01/19/23 How much boost were you running on race gas? - Denis 11:20:21 01/19/23 I'd have to go back and look, but I think it was just - Boosted1 18:14:35 01/19/23 Agreed. I experienced boost creep on the dyno - MixManMash 13:14:33 01/19/23 Have you ever used all 815? (n/m) - Mike@ZSpeed 14:09:59 01/19/23 Nope. It's completely useless. If you put your foot into - MixManMash 15:15:17 01/19/23 My RE71Rs were soooo noisy driving around - Drk93TT 06:14:05 01/20/23 Can't hear tire noise over the sound of the exhaust. (n/m) - MixManMash 09:09:26 01/20/23 I have bellmouth design / style right now - not the CZP - The Devils Z 12:45:12 01/20/23 Re: boost creep - NUTTZ 18:37:59 01/20/23 I'm running 2. 1 per turbo. (n/m) - MixManMash 01:26:12 01/21/23 That is an interesting topic. - Boosted1 13:07:21 01/21/23 That was my thinking on - Boosted1 12:24:38 01/21/23 I tend to agree with your list with small changes - ConVerTT 12:32:39 01/21/23 Funny you mention expansion DP & 3" to 2.5" exhaust - Boosted1 12:55:36 01/21/23 And i will also add, - Boosted1 13:01:33 01/21/23 Agreed. I think we’re trying to do the same thing… - ConVerTT 13:13:01 01/21/23 I think you're going to notice that trend reversing. As we - Inzane 15:38:17 01/23/23 I am with Kent - Denis 23:51:08 01/23/23 I agree with your conclusions - ConVerTT 12:40:23 01/21/23
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