Go Back   Infamous Nissan - Hardbody / Frontier Forums > Model Specific > Hardbody Forum (D21)

Reply
 
Thread Tools Display Modes
Old 12-08-2018, 02:56 AM   #1
CameronLarsen21
 
Join Date: Nov 2018
Location: Houston, Texas
Posts: 7
Vehicle: Nissan 1986.5 D21 Hardbody Z24i
Thanks: 10
Thanked 0 Times in 0 Posts
Default Homemade Electric Forced Induction Turbo/Supercharger...?

In my profession, I often find myself in the possession of used old electronic parts - many of which are (yes, don't groan, I know) electric fans for computers and servers. Very, very strong ones.

I own a 1986.5 Nissan D21 TBI Z24i Truck. Very small engine for a truck by today's standards, giving only about 107HP. I know that these are famously indestructible. I was thinking about purchasing a Spectre TBI Dual Air Intake Kit to put on top of the Throttle Body, but those, including the mounting accessories, air filters, and every other little thing to buy, it came to be almost $300-$350, all for some steel tubing and a few filters.

I came to the conclusion that maybe, just maybe, there was a better, less expensive way. A DIY electric air intake, with some tubing and a few filters.

Would it be possible to wire up a two electric server fan motors to the battery/alternator (two because I figured that two air intakes could be better than one), and put air filters on front of the tubing, right in front of the fans...? Would this do much of anything, and if so, would I need to adjust the air/fuel ratio, and how would I go about getting this done??

Thank you much, and I appreciate the help!!
CameronLarsen21 is offline   Reply With Quote
Old 12-08-2018, 04:05 AM   #2
LugNut1990
 
LugNut1990's Avatar
 
Join Date: Jul 2015
Location: N.E. Kansas
Posts: 359
Vehicle: 1990 Nissan Hardbody
Thanks: 0
Thanked 32 Times in 29 Posts
Default

Don't bother with the muffin, etc. fans -- similar scam devices have been on the market before.


You'd need a real roots- or centrifugal-type supercharger. There's some threads on this site about various attempts.
__________________
Original owner
1990 Nissan Hardbody, Aztec Red
Standard cab, 4x4, KA24E, 5-speed
Intentionally near-stock
Mods: Second OEM horn, stereo/speakers/sub,
mud and snow tires, HD trailer hitch (cat 3+),
liquid bed liner, G1W dashcam
Definitely not for sale!
LugNut1990 is offline   Reply With Quote
Old 12-08-2018, 04:24 AM   #3
Deerhurst
4/86 SE-V6 2 tone 4x4 HB
 
Deerhurst's Avatar
 
Join Date: Apr 2013
Location: Oregon
Posts: 5,248
Vehicle: 1986.5 Hardbody
Thanks: 717
Thanked 497 Times in 459 Posts
Default

The amount of power you will need to power a fan capable of making a difference will be probably more than you'll gain.
__________________
1986.5 SE-V6 4X4 D21 Hardbody
Pacesetter Long Tube Headers
Morimoto Mini D2S HID Projectors and Hella 500s
VG33i
Deerhurst is offline   Reply With Quote
Old 12-08-2018, 03:31 PM   #4
jp2code
Software Developer
 
jp2code's Avatar
 
Join Date: Dec 2011
Location: Longview, TX [USA]
Age: 49
Posts: 8,861
Vehicle: 94 LB 2x4 Manual VG33e
Thanks: 1,284
Thanked 1,103 Times in 973 Posts
Default

Turbos are driven by the engine exhaust, and superchargers are driven directly from the engine crank.

As such, both of those setups pump less air at lower engine speeds and more air at higher engine speeds.

A server fan operates at a constant speed.

Say the throttle body on your truck flows a whopping 400 CFM (that seems like a lot for a Z24i, but I'm just using an example).

Your server fans would need to be able to push 200 CFM each. Probably achievable. This Amazon's Choice fan claims 110 CFM at 2600 RPM:

https://www.amazon.com/dp/B009OWRMZ6

It has a 67,000 hour lifespan, but it is also AC powered at 18 Watts - so you'll need to add an inverter.

The problems I see would be getting the air flow to match the engine needs as the engine speed changes.

If you are bored and looking for a project, do it! Take notes so you can tell others how it's done.
__________________
Joe (not a mechanic!) Don't have an account? EMAIL ME
Free Service Manuals: https://ownersmanuals2.com/make/nissan
Walk-through: Checking Nissan Trouble Codes
1994 VG30E to VG33E with H256 Cams

jp2code is offline   Reply With Quote
Thanked by:
CameronLarsen21 (12-08-2018)
Old 12-08-2018, 03:41 PM   #5
Foul_Mouth
Infamous Autocrosser
 
Foul_Mouth's Avatar
 
Join Date: Mar 2010
Location: Western NY
Posts: 4,179
Vehicle: 1986.5 4WD Reg Cab/ 1991 2WD Reg Cab(Red)/ 1995 2WD Reg Cab(Green)/ 92 WD21 4WD PathFinder
Thanks: 439
Thanked 619 Times in 503 Posts
Default

I thought the days of bilge pump turbos were long gone.
__________________
Nissan Truck Videos (Builds-Racing-Shows-Tech)
https://www.youtube.com/c/NissanTruckguy
IG@ rainmaker_d21








Foul_Mouth is online now   Reply With Quote
Old 12-08-2018, 04:05 PM   #6
Deerhurst
4/86 SE-V6 2 tone 4x4 HB
 
Deerhurst's Avatar
 
Join Date: Apr 2013
Location: Oregon
Posts: 5,248
Vehicle: 1986.5 Hardbody
Thanks: 717
Thanked 497 Times in 459 Posts
Default

Quote:
Originally Posted by jp2code View Post
Turbos are driven by the engine exhaust, and superchargers are driven directly from the engine crank.

As such, both of those setups pump less air at lower engine speeds and more air at higher engine speeds.

A server fan operates at a constant speed.

Say the throttle body on your truck flows a whopping 400 CFM (that seems like a lot for a Z24i, but I'm just using an example).

Your server fans would need to be able to push 200 CFM each. Probably achievable. This Amazon's Choice fan claims 110 CFM at 2600 RPM:

https://www.amazon.com/dp/B009OWRMZ6

It has a 67,000 hour lifespan, but it is also AC powered at 18 Watts - so you'll need to add an inverter.

The problems I see would be getting the air flow to match the engine needs as the engine speed changes.

If you are bored and looking for a project, do it! Take notes so you can tell others how it's done.



Don't forget that even if you can move 400CFM on a motor capable of using 400CFM you've only created no vacuum and no positive pressure. The fan should become less efficient the closer to that 0 you get requiring more power and more RPM to achieve 0.



I believe roadkill did manage to get a little bit of boost with 3-4 gas powered leaf blowers in an AMC.
__________________
1986.5 SE-V6 4X4 D21 Hardbody
Pacesetter Long Tube Headers
Morimoto Mini D2S HID Projectors and Hella 500s
VG33i
Deerhurst is offline   Reply With Quote
Old 12-08-2018, 05:51 PM   #7
CameronLarsen21
 
Join Date: Nov 2018
Location: Houston, Texas
Posts: 7
Vehicle: Nissan 1986.5 D21 Hardbody Z24i
Thanks: 10
Thanked 0 Times in 0 Posts
Default

Alright, thank you all for the help! It is much appreciated! Any other ideas to pimp out just a Standard Z24i?
CameronLarsen21 is offline   Reply With Quote
Old 12-08-2018, 10:33 PM   #8
h.stickeye
 
h.stickeye's Avatar
 
Join Date: Nov 2014
Location: Brisbane AUSTRALIA
Posts: 1,074
Vehicle: 91 Nissan Navara d21 Single Cab
Thanks: 155
Thanked 113 Times in 98 Posts
Default

the two easily done ones are exhaust and cam. If done right you might cram another 30 ponies in.

You can do a weber conversion, and that will raise your HP another 20 or so.

Anything else would require a complete tear down (internals upgrades) and then for real power you're looking at blow through (if you went the conversion).
h.stickeye is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:42 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.