Crank scraper maybe little too tight?
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Crank scraper maybe little too tight?
The windage trays maybe a little tight in this engine?
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Re: Crank scraper maybe little too tight?
Trim back the drawer handles a little. Should be fine.
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Re: Crank scraper maybe little too tight?
Just to cover the bases did you have the rods resized lately?
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Re: Crank scraper maybe little too tight?
Yep, those were rebuilt. I don’t recall those marks after the rods were rebuilt, but that doesn’t mean anything.Dave Koehler wrote: ↑Sun Feb 09, 2020 8:37 pm Just to cover the bases did you have the rods resized lately?
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Re: Crank scraper maybe little too tight?
I think you will find all the rods have that rub mark.ptuomov wrote: ↑Sun Feb 09, 2020 8:40 pmYep, those were rebuilt. I don’t recall those marks after the rods were rebuilt, but that doesn’t mean anything.Dave Koehler wrote: ↑Sun Feb 09, 2020 8:37 pm Just to cover the bases did you have the rods resized lately?
Plus your scraper is cut to clear the big end of the rod is it not?
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Re: Crank scraper maybe little too tight?
Yes. The marks were a mystery to me, but if they came from resizing the rods then that’s a logical explanation. I threw out the windage tray hypothesis, even though the geometry doesn’t really make that explanation terribly likely.Dave Koehler wrote: ↑Sun Feb 09, 2020 8:49 pmI think you will find all the rods have that rub mark.ptuomov wrote: ↑Sun Feb 09, 2020 8:40 pmYep, those were rebuilt. I don’t recall those marks after the rods were rebuilt, but that doesn’t mean anything.Dave Koehler wrote: ↑Sun Feb 09, 2020 8:37 pm Just to cover the bases did you have the rods resized lately?
Plus your scraper is cut to clear the big end of the rod is it not?
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Re: Crank scraper maybe little too tight?
I think the scraper/windage tray sheets clear the big end, where the geometry is tighter.Kevin Johnson wrote: ↑Sun Feb 09, 2020 8:25 pm Trim back the drawer handles a little. Should be fine.
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Re: Crank scraper maybe little too tight?
That would be my guess too. From the marks, I'd say both end of the rods were sized.
That isn't the part of the rod that's closest to a windage tray or scraper.
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Re: Crank scraper maybe little too tight?
That’s where the marks came from, so mystery is solved. Windage tray comment was just for fun, they obviously can’t touch the rod so high up.
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Re: Crank scraper maybe little too tight?
As others said -
https://www.statesidetuning.co.uk/machining/rods2.JPG
Honing pin bushings is not my favorite, except for tweaking clearance after rod straightness is measured and confirmed satisfactory.
https://www.statesidetuning.co.uk/machining/rods2.JPG
Honing pin bushings is not my favorite, except for tweaking clearance after rod straightness is measured and confirmed satisfactory.