It wasn’t the bolts that I was worried about. It was the aluminum block that the threads were tapped into.
Don’t feel bad for the bolts… Feel bad for the shaft… That’s what the pump sits on
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You might as well have posted hieroglyphics. Holy smokes. 
@Dago52, did you use spacers between the pump and motor?
I used the stock 3/8" bolts that came with my sumo & added the 5/16" as well. I did not like how the gearbox mounting point for the 3/8" bolt pattern was not flush. The mounting point for the 5/16" bolt pattern was snug to the engine. If you zoom the pic, you should be able to see the different bolts.
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Great minds think alike? 
So no spacers, then.
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No sir! 70 hours and all is good.
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Whatcha got going on with the unloader? Just needed to adapt from the 1/2” thread to a barb? Or something more?
I am running the ZK1 with 3/8" in/ out & 1/2" bypass. Connected my whip lines straight and using an unloader block.
Hmm, do you mind sharing where this zk1 with 3/8 in/out was purchased? Two of my ports were 1/2 on my zk1.
Pressuretek. It was labeled as just a k1. But all the specs matched everything that the zk1 is marketed as being.
Enter the world of insane overkill. But I don’t trust the rivnuts or these isolation mounts to hold everything with only 4 or 6 mounting points.
And having everything in such a small footprint (12”x12”) means any torsional forces will be amplified.
Does anyone else feel like a wizard every time you tap threads in a piece of metal? Just me? That’s ok, I know I’m weird 
I didn’t have the right size bolt to go in the motor, so just drilled and tapped a 1/4-20 into the skid.
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@Dago52 or anyone else with an iGX- do the the hour meters on these machines have a built in tachometer?
No, they don’t. Buy yourself a tiny tach. They come in handy for lots of things. I keep one in the glove box on all the trucks
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It will bubble out what it doesn’t want
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Ha, sounds messy. I’ll get out the syringe 
Felix Unger 
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those rubber dampers will settle after a while with all the weight and twist of the motor, be sure to check and re tighten down the line.
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