Gramma's Car: the new project!

[njsteve]

Thanks for the moral support! [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

[njsteve]

I decided to &quot;blueprint&quot; the oil pump today. Not much to it other than verifying that there is no crap inside the casting.

I'm glad I took a look. This is a brand-new Melling M54DS oil pump. Inside, all of the machined surfaces were incredibly sharp and I found tiny metal burrs and little shards that were just sitting there, waiting to get pumped in to engine. NEVER trust a new pump without looking inside it first.

Here is the housing once I pulled the gears out. See how sharp the edges are?



Now take a closer look and you can see a metal splinter leftover from the machining process that was under the gear, as well as burrs on the edges of the machined passages.




I spent a while with a Dremel tool and some fine sandpaper smoothing all the internal edges. I also used a 1/2&quot; drill bit to open up the feed hole that mounts to the block to it's correct 1/2&quot; size. It was rough cast from two halves and they were not matched up correctly. I then washed and scrubbed and brushed the housing out in hot water and soap.

Here is the housing after the edges were smoothed and before washing:




And the final pump reassembled. I packed it with grease so it will prime instantly when the times comes.

[njsteve]

Update from the machinist: He examined the crank and said I could run the crank &quot;as is&quot; but if it was his engine he'd cut it .010/.010 just to make it perfect. So that's what we're gonna do. We should know about the block dimensions tomorrow.

[njsteve]

Got the block update this morning. It needs a little cleaning up of the .030 bore, so it will be bored to .040. The machinist said, &quot;yeah you could leave it at the existing .030, hone it, and slap it together, but if it was mine I'd make it perfect at .040 and start from there.&quot;

Since I have to order a set of forged pistons anyway, I went for the .040 (same price as the .030).

$312 for http://www.summitracing.com/parts/slp-l2359nf40