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240Z | 260Z| 280Z | 300ZX (Past Z Cars) The original Z cars - ones that started it all.
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Old 10-14-2004, 01:36 AM   #1
Zgringo
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Often overlooked upgrade

Intercoolers were designed for lazy drivers not wanting to take the time to check their water/alky level in their injection system. I'm not going into alot of details as the sites i've posted says it all pretty much. I do know you can get a bigger temp. drop with water/alky than you can with intercoolers, but if you already have intercoolers you can upgrade your turbo's bigtime without spending bigbucks for larger intercoolers by adding water/alky injection.

http://www.key-ideas.com/2ndWaterInjection.htm

For the DIY guys here's a good homemade system.

http://members.cox.net/stevemonroe/AlcoholInjMod.html

I have 2 friends that have converted NA Zed's to TT. One has 10:1 pistons and the other 10.5:1 pistons. For a normal TT to be equal to the power of these conversions it would take the following:

The NA w/10:1 pistons
12# boost

VG30DETT w/8.5:1 pistons
18# boost

The NA w/10.5 pistons
16# boost

VG30DETT w/8.5:1 pistons
24# boost
Both guys run water/alky injection with no problems. The one with 10.5:1 pistons also uses Toluene 25% mix to 92 octane gas.
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Old 10-14-2004, 01:59 AM   #2
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wow...thats some nice info there zgringo. hmm...water/alky injection + 2 turbos = boost happy Z.
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Old 10-14-2004, 02:00 AM   #3
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/\ Thats the plan.
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1989 240SX Fastback. . . . . . . . . . . . . . . . . . . . . . . . . . . 1995 300ZX Twin Turbo


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