Builds Fly By Night (3 Viewers)

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Couple of minor updates -

Talked to Marco, the guy I bought the engine from. He said if I want to, bolt the engine back together and bring it back to him for an exchange.

Talked to Jack, the owner of the Tucson machine shop. He suggested to try fitting a new bearing into the bore of the spun bearing and see how it fits. He said that if I were to take it to him to replace cam bearings or main bearings or anything else, he would then only do a complete rebuild due to liability issues. Top to bottom, $3,000 (which really isn’t bad).

I went ahead and pulled the main caps and crank. Everything looks good. Got a better view of the spun cam bearing bore. Very slight wear on the bottom, virtually untouched on the sides and top.

Gonna go ahead and order the cam bearings that Megadoomer supplied the part numbers to earlier in the thread, a removal/install tool, main bearings, rod bearings, and rings and get going on this mamma jamma.

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Finished cutting the rest of the pieces. So everyone knows, all cuts have been made with a circular saw, and not even a very good one, just a new metal cutting blade.
This should just about round out the tank project - maybe just 2 - 3 days to weld it out and, poof, that project is done.

Funny little reflection on this build process - there’s probably more time and money spent on getting setup to handle each step than the actual hardware itself. Every little step seems to be so nerve-rackingly critical, and then, BOOM, it’s done and you’re on to the next thing with its load of unknown variables and you just work through it step by step. Very rewarding process.

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Funny little reflection on this build process - there’s probably more time and money spent on getting setup to handle each step than the actual hardware itself. Every little step seems to be so nerve-rackingly critical, and then, BOOM, it’s done and you’re on to the next thing with its load of unknown variables and you just work through it step by step. Very rewarding process.
The magic feeling :clap:
 
all cuts have been made with a circular saw, and not even a very good one,
You are way ahead of me, my tool box just has the two hammers. Flat hammer is for smashing and pointy hammer is for cutting.

Nice job on the tank with all your fancy tools!
 
You are way ahead of me, my tool box just has the two hammers. Flat hammer is for smashing and pointy hammer is for cutting.

Nice job on the tank with all your fancy tools!
This is what he tells Leslie but she’s the sharpest tool in his drawer.
 
He’s probably got more tools in his night stand than I have in my MATCO roller toolbox at work.
Those might be HER tools in the night stand... :flipoff2:

aw hell I'm getting another frown ain’t I?
 
Got the baffles cut out and welded together, and tacked on the inside - but only on the sides. Trying to tack it out along the bottom proved to be futile. Going to see tomorrow about using a spool gun to lay some stitch welds along the bottom before putting the top on.

The last pic is a layout of the mounts. 1/4” x 2” angle welded to some sizable 3/16” scab plates.

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So I’m yet to weld allu in my life, why would it not weld on the bottom but was happy on the sides in the same material?
 
Interesting design for the baffles. Did you have a reference or just got creative? Regardless I like it. I know the holes won't hurt anything but do you need them with the clipped corners on the bottoms? Just curious as I know nothing about designing a fuel tank.
 
So I’m yet to weld allu in my life, why would it not weld on the bottom but was happy on the sides in the same material?

I’m thinking it was the angle of the torch and angle from which I was able to see and feed rod that was preventing me from either seeing a puddle form or actually create a suitable puddle to dip the rod in. For whatever reason, it wasn’t happening. And then the bottom of the tank would warp so much from the heat that it was creating a huge gap under the baffle by the time I was able to create anything that resembled a tack weld. After try number three failed, I decided to call it. The baffle portion could all be constructed and welded I with a MIG anyways which would be a hell of a lot faster. With as tight as this baffle setup fits in the tank, it probably could get by without welding, but I want to so gonna give it a try. I put in some bosses on the top of the baffles to plug weld the top to and tie the whole works together.
 
Interesting design for the baffles. Did you have a reference or just got creative? Regardless I like it. I know the holes won't hurt anything but do you need them with the clipped corners on the bottoms? Just curious as I know nothing about designing a fuel tank.

Purely creative. Originally wanted a lateral baffle to separate the sump from the back half, but the placement of the fill hole would have caused the baffle to run into it, which may not have really been a problem, but decided to be different and angled the ends forward. It progressed from there to attempt to keep as much fuel in the front sump area as possible while on an incline or side-hill. The rest was just an excuse to use up some of the leftover aluminum. Hopefully they will help to reduce slosh as a side effect.

The clipped corners are the areas where the fuel will ideally flow through the most under a half tank. They were easier to do than cutting more holes.
 

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