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06-08-2019, 12:25 AM #1
Oil Gear Removal and Epoxy Fill Need Help With Finding Old Thread
I know I'm asking for a lot, but I've looked for an old thread posted about a year ago that had images of the oil pump shaft removed and filled with JB Weld or similar epoxy. I purchased the block-off kit, but have decided that I want to address the compression loss the void will cause.
Here is another question - is there a general rule for the increase in main jet sizes and the idle air jets to work with the new, thicker fuel/oil mixture that the premix brings about? I'm finally getting back on my 2.0L fatblock project. Thanks, Gordon
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06-08-2019, 08:02 AM #2
Is the block split? Or r u just tryin fill the cavity in front half?
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06-08-2019, 08:18 AM #3
It's fully split. I'm doing a complete rebuild. Rods being balanced, pistons top-pinned, balanced, new bearings at both ends of the rods, all new crank bearings at the top and bottom, and some smoothing work on the ports in the exhaust chest.
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06-08-2019, 08:33 AM #4
Well I thought I had a pic ov my block filled , Perry used marine tex. sry I thought I had a pic for you but I didnt think to take a pic
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06-08-2019, 09:59 AM #5
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06-08-2019, 10:09 AM #6
I also drive the bushing out of the floor of the cylinder and fill the hole left behind with epoxy. This is important, because there is nothing there to keep the bushing from falling out with everything filled in.
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06-08-2019, 10:43 AM #7
I run a small bearing 260 crank or an early 2.0 non-oiler crank when I do this.
I usually use a block off kit and cut it short and fill the back side with marine tex. Mine ends up looking like it has a delete kit installed.
James Perry fills the whole front half and grinds the block down so his looks like a non-oiler.
Many different ways to skin this cat!Josh Peterson
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06-08-2019, 10:55 AM #8
Here’s a pic with the crank installed to make more sense of it. If you remove the gear on an Oiler crank you would have to make the complete diameter of the block and crank smaller to match up to crank. Or you can use a non oiler like nitro said and do the block the same way as I have In pic. and it’ll match without having to add any more epoxy.
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06-09-2019, 07:15 AM #9
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06-11-2019, 03:14 PM #10
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06-11-2019, 06:25 PM #11
A lot of experimenting and jacking things up. Found that I have best results and less work using splash zone. A lot also has to do with the way you mix it and work it. I’ve found for strength purposes and ease of working, it’s best to mix the two parts with as little water as you can and still be able to mix it.( the water causes little voids when dries that look like air bubble pockets in the epoxy and makes it weaker). I start with a thin layer and nead it back a forth with dry hands on a roughed up surface until it gets a good hold. Then I start building it up packin’ it to make sure no air pockets until I have built up a tad larger than I need. Then I wet my hands and work it and shape it to the shape I want ( kinda like doing pottery) Then while it’s setting I check on it every few minutes and if it’s sagging at all I give it a little lift with wet hands. The next day I work it and grind it to my liking.(Usually very little grinding needed if I took my time and made sure it was right before it totally set). Once you get the hang of working the stuff, you could make a bowl out of it lol. I use it for all kind of things, I made my torque tab out of it and shaped it like I wanted it and smoothed it smooth as a babies butt with my wet hands and hardly no grinding needed. And it’s held up unbelievably well.
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nitro_rat thanked for this post
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06-11-2019, 06:43 PM #12
Kinda like Forbes has done. When Perry did my (void) , besides the color it looks like part of the block. I'm guess just lots of practice! My hats off these guys for sure
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nitro_rat liked this post
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10-13-2023, 01:31 PM #13
This is an old thread, but I'm doing this to a buddies block now. There are a bunch of different epoxy choices, mostly I have PC-7 and marine -tex. Guessing either on will work, I plan on leaving the gear on as well, I don't like the idea of that much epoxy being built up. I've searched a lot of threads, some don't even fill this and say there is zero difference, but hell if I know lol
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10-13-2023, 08:18 PM #14
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VkingMike thanked for this postDavid - WI, VkingMike liked this post
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10-16-2023, 09:19 AM #15
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