Crank Scrapper

[david-b]

Hey all,
Ive seen on ebay a crank scrapper thing that supposedly cleans the crank. I doesnt let the oil build up on the cranks, and supposed to keep performance. On DSMtuners, there was a post saying that it worked great. Does anyone here have one of those? Im thinking of picking one up and installing? Does this replace the oil pan already there? Or is it jst a piece that does between the block and the oil pan? Thanks!

[kjewer1]

To start, its scraper, not scrapper. Like timing and tuning vs timming and tunning Sorry, pet peeve of mine

It typically goes between the block and crank. It doesn't actually touch the crank despite its name. Basically keeps the oil out of the air reducing the amount of resistance the crank encounters as it moves. I've heard estimates of the amount of oil that can remain suspended in the air at any given time and they were pretty alarming. At any rate, this is one of those things where the gains can be hard to quantify. You have to go on what the other types of motors have seen (nascar and other v8s have been doing this forever), and general theories (like at 10k rpm this will probably be much more valuable than a motor that doesnt see over 7500, etc). They tend to be relatively cheap, and I can't think of any negative side effects, so there is no reason I am aware of to not use one in your next motor build up.

[david-b]

Cool. Sorry about the spelling. That runs in the family. Sad, aint it?!?!

So basically, there's really no way with the smaller engines to really say if there is any gain, but it wouldn't do bad? Sounds good enough for me. Taking off the oil pan seems pretty easy. Might get it and do it before the winter picks up. Thanks Kev.