TwinTurbo.NET: Nissan 300ZX forum - Great info Greg! Are there negative consequences to just
Subject
Great info Greg! Are there negative consequences to just
Posted by
ConVerTT
on July 04, 2012 at 1:35 PM
This message has been viewed
154
times.
In Reply To
GT35 Compressor Map Plot against dyno Chart
posted by Greg D. (Specialty-Z)
on July 03, 2012 at 09:18 PM
Message
"living" with the surge for this type of drag race application? Aside from the obviuos innefficiency of having the surge in the middle of his powerband LOL?
Follow Ups
GT35 Compressor Map Plot against dyno Chart
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Greg D. (Specialty-Z)
21:18:37 07/03/12
Why not go with larger exhaust housings? Should help shift
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zxtuner161
21:41:01 07/03/12
That is way to move the surge line, but your giving the
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Greg D. (Specialty-Z)
21:58:55 07/03/12
And surging isn't? Lol. Can't have your cake and eat it too.
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zxtuner161
22:01:59 07/03/12
Of course I want to find a way to have my cake and eat it! (n/m)
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Greg D. (Specialty-Z)
22:17:27 07/03/12
Tial only offers the .63 and .82 A/R housings...
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Machtavian
00:45:40 07/04/12
Steve has the larger exhaust housings on the shelf...
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Machtavian
00:33:41 07/04/12
Thanks for the explanation! So are these snails just too big
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marklar182
21:43:19 07/03/12
No, the turbines are mismatched for the motor. (n/m)
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zxtuner161
21:53:07 07/03/12
Things that will help without increasing exhaust housings...
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Greg D. (Specialty-Z)
01:24:25 07/04/12
Larger tubing on the exhaust manifolds & a better merge
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induetime
11:28:20 07/04/12
Thank you very much for sharing that. (n/m)
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Boosted1
21:47:36 07/03/12
Great explanation. So in essence, you don't think the
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MixManMash
21:50:28 07/03/12
The issue with compressor surge is caused by back pressure
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zxtuner161
21:59:37 07/03/12
At the cost of slow response with a turbo that size on this
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Greg D. (Specialty-Z)
22:20:01 07/03/12
So this is mostly an issue being associated with the Auto?
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91300zxttkid
07:13:03 07/04/12
A manual trans will actuate the BOV/Recirc if you lift to
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marklar182
11:20:28 07/04/12
I like the spool and personally would want to keep it....
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Greg D. (Specialty-Z)
22:14:21 07/03/12
That would be awesome to see. (n/m)
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zxtuner161
22:27:13 07/03/12
So basically having some form of active control where you
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MixManMash
22:54:53 07/03/12
Already running MAP (n/m)
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Greg D. (Specialty-Z)
23:06:14 07/03/12
Stand alone? (n/m)
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Piranha
02:46:55 07/04/12
+1, MAP owns MAF, the sooner the community catches up,
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samsung-Z [Houston]
13:45:06 07/04/12
When do you plan on providing data to support your claims?
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aliaZ
07:19:35 07/05/12
whoa - Greg recommending BOVs ? Now I have heard it all ..
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The Devils Z
07:27:44 07/04/12
nothing wrong with BOV's IF they are bigger valves than
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ztunerz
16:59:09 07/04/12
I'm thinking about getting these:
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MixManMash
18:04:11 07/04/12
BTW, did you get the runfiles I sent you?
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MixManMash
18:04:50 07/04/12
yeah got it, need to get everything on the same computer... (n/m)
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ztunerz
20:45:05 07/04/12
Cool. (n/m)
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MixManMash
23:38:53 07/04/12
Link inside >>>
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ztunerz
22:10:10 07/05/12
Thanks for posting. This is food for thought for me. (n/m)
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Inzane
00:31:33 07/07/12
what do you know ..like you work on Z's or something
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The Devils Z
18:38:21 07/04/12
lately i feel i know very little. Things will turn around i
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ztunerz
20:43:08 07/04/12
Makes sense. (n/m)
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Boosted1
07:42:29 07/04/12
Great info Greg. (n/m)
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sfarrah
23:31:20 07/03/12
Just put a little red nose on it and....
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RAGTPZ
23:47:51 07/03/12
That was a fun read, thanks! (n/m)
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SeedyROM
03:09:34 07/04/12
Greg - what are your thoughts on the lag / response
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The Devils Z
07:58:05 07/04/12
looking at my boost plot chart ..the difference is that
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The Devils Z
08:08:14 07/04/12
Don't forget that this Z has a JUN stroker kit. The
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MixManMash
08:49:27 07/04/12
thanks .. I forgot the details .. (n/m)
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The Devils Z
10:57:31 07/04/12
i really wonder if it has to do with the 4mm stroke or the
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ztunerz
20:46:27 07/04/12
I vote for neither
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aliaZ
22:03:08 07/04/12
You think head work / cams would make the biggest difference
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MixManMash
23:42:10 07/04/12
yes
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aliaZ
07:13:33 07/05/12
Is the Crower crank using stock stroke? (n/m)
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MixManMash
07:36:40 07/05/12
yes
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aliaZ
07:45:14 07/05/12
good info! raising rev limit to drop into non surge zone? (n/m)
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JaffaUK
15:36:25 07/04/12
I realized that the correction factors were not the same
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The Devils Z
16:40:23 07/04/12
That dyno pull was at 4500 feet above sea level in Reno, NV
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Machtavian
14:22:05 07/05/12
Re: GT35 Compressor Map Plot against dyno Chart
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VERTTZ
08:38:32 07/04/12
Yes...
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Machtavian
09:45:24 07/04/12
Electronically controlled BOV?
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Zbullet
08:45:11 07/04/12
Great info Greg! Are there negative consequences to just -
ConVerTT
13:35:34 07/04/12
In other words, is it terminal or just innefficient? (n/m)
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ConVerTT
13:43:59 07/04/12
Damaging! High pressure surges are like a heart attack.
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OverZealous (CT)
13:56:02 07/04/12
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