Go Back   DIY Go Kart Forum > Announcements & Suggestions > FAQ & Articles


Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 12-10-2013, 08:06 PM
Scout's Avatar
Scout Scout is offline
Join Date: Nov 2008
Location: Indiana
Posts: 540
Thanks: 27
Thanked 86 Times in 61 Posts
Default Predator 212 Engine - Collected Info

I'm collecting Predator 212 info and thought I'd make a thread on it.

The easiest things to do are to replace the stock intake and exhaust. The intake is designed to do a couple things, one is to be compact, and another is to keep the intake noise down. Unfortunately it is also restrictive, and restrictions cause a loss in power, so it's a good idea to ditch it.
The exhaust is supposed to be a spark arresting type. that, plus the baffles to keep it quiet, also is restrictive. Actually, the quieter the muffler, the more restrictive it is.
Here is a webpage where the 212 was ungoverned, with a new intake and exhaust. According to the article, the motor is rated at 6.5 hp (but we knew that) and with these mods it put out nearly 9 hp at 3600 rpm (governed speed) and 9.8 at 4700 rpm. It goes on with a few more mods to pull a max of 12.13 hp.

You might read something about the Hemi head motor. I don't know the specific differences, I can only find that the hemi head motors are better, they came on motors built after June 2013, and have a cast aluminum valve cover. Here's a thread about how the hemi head flows.
According to this post http://karting.4cycle.com/showthread...ll=1#post42607 it sounds like you can use a head from a GX160 (5.5 hp) on a Predator with a stock piston and decent cam, and get 17 hp. I wouldn't try it unless I had money to burn.

Here is a debate on ethanol vs methanol. It sounds like E85 is a cheaper alternative to methanol. I would think that if you were going to run methanol you'd want to bump up the compression and build a motor for the fuel. Since I can't get E85 where I live, I'll just stick to regular.

Here is a thread on an all out Predator build. It was at 15 page when I linked it here. (He had just over $1000 in it too) http://www.oldminibikes.com/forum/ho...upgrade-s.html

Parts websites
Cams and valvetrain http://www.smallenginecams.com
Predator engine parts http://www.parsonsracingengines.com/...20kart%20parts
"Hop up kits" (cheap way to get a bunch of parts) http://www.nrracing.com/category-s/1819.htm

Torque specs http://brainlubeonline.com/clone/

Fuel injection? Heck yes! http://www.brainlubeonline.com/clone/fuelinjection.html

Video time! I don't know this guy and have nothing to do with him, I just thought he has some good videos.

I highly discourage this. It is no way to accurately lighten a spring. With all the money this guy spent on his engine, he should have just bought the right springs.

http://www.diygokarts.com/vb/showthread.php?t=2473 Pile o'crap http://www.diygokarts.com/vb/showthread.php?t=23757 Lights!
The Following 11 Users Say Thank You to Scout For This Useful Post:
adsum (10-14-2014), Axx3d (01-11-2015), Ckolin725 (08-05-2016), Doc Sprocket (12-11-2013), firemanjim (12-23-2013), Jr. Mechanic (01-03-2017), landuse (12-11-2013), machinist@large (12-11-2013), Oxymoron (12-11-2013), rocketkart (12-10-2013), Slimmpd (11-22-2016)

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

All times are GMT -6. The time now is 05:32 AM.