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Old 06-04-2008, 07:27 AM   #1
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D16z6

ok i'm about to get a pretty good deal for a motor. its the D16Z6 for $200 i wanted to buy it for a direct replacement on mine (knocking) but started to think about how can i modify my knocking motor into a gas sipping monster?! do i raise the compression? cam? what would i do with the bottom end? help me build my monster with your suggestions.

here's what i was thinking:

raise compression to about 10:1
buy a mild cam skunk stage 1 or 2
buy shorter rods, to make it a shorter stroke
and thats about it. anything else you guys would suggest?
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Old 06-10-2008, 04:12 PM   #2
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what tranny are u going to be using?
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Old 06-10-2008, 08:20 PM   #3
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Chip the ECU. Dual modes, switch on the fly, econo and performance. Get a wide band O2, chipped P28 and data logging. Go for aero mods and light rims. 38mpg is possible.
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Old 06-11-2008, 07:38 AM   #4
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what tranny are u going to be using?
my oem ex tranny with a vx 5th gear. i do highway all day pretty much every day.
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Old 06-11-2008, 07:39 AM   #5
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Originally Posted by maxxgraphix View Post
Chip the ECU. Dual modes, switch on the fly, econo and performance. Get a wide band O2, chipped P28 and data logging. Go for aero mods and light rims. 38mpg is possible.
how can i get the dual modes? would i need two ecu's? and if i got the vafc can i tune it with that and how many maps can i get on there? thanks for the help guys!
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Old 06-11-2008, 07:46 AM   #6
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on my transmission will a hf fifth gear fit? or am i better off with the vx? which would you guys do?
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Old 06-11-2008, 01:09 PM   #7
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which one would yield better fe at 60-90 mph?
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Old 06-11-2008, 01:21 PM   #8
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Quote:
Originally Posted by 93dagsr View Post
buy a mild cam skunk stage 1 or 2
buy shorter rods, to make it a shorter stroke
Shorter rods will only change you rod-to-stroke ratio, not your stroke. Changing the stroke requires a different crank, not something I'd consider worthwhile.

However, with that in mind, you can lower the "effective" displacement by using a custom ground Aktinson Cycle camshaft that leaves the intake valve open after BDC. This would allow you to build the engine with a much higher mechanical compression ratio (and greater efficiency) but without risking detonation. . .ala the Prius engine that has a 13.6:1 mechanical compression ratio yet runs on regular unleaded.
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Old 06-11-2008, 05:37 PM   #9
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my oem ex tranny with a vx 5th gear. i do highway all day pretty much every day.
thats not going to do anything, they both have the same 5th gear ratio
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Old 06-12-2008, 10:24 AM   #10
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thats not going to do anything, they both have the same 5th gear ratio
really? i thought it had a longer ratio? i noticed that at 60 mph yesterday i was dead on at 2500 rpms.

what about the hf (crx) fifth gear i heard that will drop me to 1500 rpm @ 60 mph
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