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  #61  
Old 02-17-2017, 01:38 PM
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Hemi vs milled 18cc

Alcohol carb, timing adjustment, and reassembly should take place in the morning. I'm drinking beer for the remainder of today.
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  #62  
Old 02-17-2017, 02:59 PM
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I haven't. I'm going to swipe the valves and springs out of my hemi head and put in this one and probably won't bother driving the 45 min to my buddy's shop that has all the cc stuff. It really shrank it up, I can tell a big difference in chamber size just by looking at the before and after pics.

For reference, here it is next to the 14cc head I just had built for my clone.
What are your plans for the hemi head?

btw, where do you live? I watched a few of the videos you posted and it looks like my back yard..lol
  #63  
Old 02-17-2017, 03:08 PM
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What are your plans for the hemi head?

btw, where do you live? I watched a few of the videos you posted and it looks like my back yard..lol
Not sure yet, thinking about just selling it. I live in NW Arkansas. I'm on a little plateau so you can't really see how mountainous it is around here.
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  #64  
Old 02-17-2017, 09:55 PM
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Wait I thought the plan was to leave the Predator stock and run it hard.
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  #65  
Old 02-17-2017, 10:11 PM
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Wait I thought the plan was to leave the Predator stock and run it hard.
It started that way, but I've decided that it just ain't going to give it up stock. I've put a full 5 gallons of gas through it pretty much at valve float on the track without even changing the break in oil. So now I'm upping the compression and putting it on methanol to give it more woopow off the corners while leaving the governer mod intact. The next step will be zero decking the block as ideally I want it around 13:1 compression.

Short version: it won't blow up stock with the kart art Gov mod, so screw it, let's soup it up.
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Old 02-17-2017, 10:18 PM
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Rock on!
I think you definitely proved the Stock configuration is pretty Bullet Proof.
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  #67  
Old 02-17-2017, 10:22 PM
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That gov mod is rock solid as far as I'm concerned as well, I even went up on valve spring pressure and rpm's trying to break it. It's getting turnt the F up now. We'll see just what it will take to break it.

Edit: my thing now is stock bottom end with the gov in it, I won't pull the side cover for any other reason than to take pics of the carnage.
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  #68  
Old 02-17-2017, 10:27 PM
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That gov mod is rock solid as far as I'm concerned as well, I even went up on valve spring pressure and rpm's trying to break it. It's getting turnt the F up now. We'll see just what it will take to break it.
It's just too bad you can't just put a bigger button in it.
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  #69  
Old 02-18-2017, 11:57 AM
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Gentlemen, place your bets.....

http://youtu.be/egbCDT4J518
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  #70  
Old 02-18-2017, 02:08 PM
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Got a little muddy on it
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  #71  
Old 02-18-2017, 02:10 PM
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I smoked it, but not how you'd think. I overlooked a little port on the airbox and it sucked in mud and water. No more compression.
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  #72  
Old 02-18-2017, 02:26 PM
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Looks like you had fun at least!! No video???
  #73  
Old 02-18-2017, 04:38 PM
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No video. I threw my clone back together with the same head that was on the predator after I killed it and rode go karts all afternoon. I let my daughter ride it for a while and it was losing power, but she kept going I guess hoping it would heal up on it's own. It was smoldering hot when I finally stopped her, hopefully it's not blown up too. I may quit letting anyone else ride my go kart as that's usually when the motors get wiped out, I guess I have a better feel for them or something, maybe it's that I care since I'm the one paying for all of this.
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  #74  
Old 02-18-2017, 07:51 PM
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Dang man sorry about the bad luck with the predator getting blown up.
How much harder was it pulling with the new head and methanol?

Im seriously considering going to methanol on the predator kart.
If you got an extra set of those rear tires on the kart ill take em off your hands.
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  #75  
Old 02-18-2017, 08:31 PM
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It ran like a scalded dog. I went from a 68t rear sprocket to a 58 with a 12t clutch which put me at 4:83 gear ratio and could keep it sideways all the way around the track. That thing giving it up was 100% my fault, I simply forgot to plug the valve cover vent in the airbox and it got mud in the engine. I'll probably hone it, slap in a new piston and rings and go again. The cool thing is that I have the hemi head sold for enough to buy the piston and rings I need.
As far as the tires go I just grooved some ht3 maxxis blues. They worked really well, but the edges wore pretty fast on the tread blocks. To set the pattern I just took my leatherman and held it against the edge of the tire with the engine reved up enough to spin the tires to make my first mark, then put one jaw on that line and laid out that pattern across the tire, then I just used my finger to figure the length of the tread blocks. It was pretty easy. I had both tires done in an hour.

Edit: I'm not going to stop letting people ride my go kart, but I'll probably pay a little more attention to how it sounds while they are. It's too much fun not to share.
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  #76  
Old 02-18-2017, 09:06 PM
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What did you use to groove the tire itself?
I have lots of extra rear tires and i need a grooved set bad.
If you dont mind text me.
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  #77  
Old 05-30-2017, 07:48 PM
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Knowing FHB he used Beer. Buck knife and his TEETH...
  #78  
Old 05-30-2017, 07:55 PM
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Knowing FHB he used Beer. Buck knife and his TEETH...
I carry a Case knife
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  #79  
Old 06-02-2017, 04:01 AM
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Have you replaced the Flywheel yet on the predator?
  #80  
Old 06-02-2017, 12:00 PM
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Never did. I traded it off after I wiped it out and the guy took the hemi and a non hemi and made predator soup. He went with a billet rod and flywheel when he did.
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