Jeep Strokers

Ishihara- Johnson has offered a crank scraper for our engines for a while now. http://www.crank-scrapers.com/amc.html


They also have a new offering for a windage tray

Thanks Chris, bookmarked for future use.

Very nice! Thanks!

Nice pieces for a NHRA stock eliminator application but would there be any benefit for most of these guys building low RPM Street/off road engines?

I don't know if there will be a measurable difference but it is always a good idea to keep the oil as free of aeration as possible besides the potentially increased power from removing some of the oil cloud around the crank. Many modern engines include some form of baffle, tray and/or screen stock. I wouldn't say its necessary, but I found it fun to make one for mine.

Does anyone have any long term review of this? I'm interested for my current build.

I used the scraper a few years back on one of my customers race engines.

Good product and well-made along with good customer service. With that said I would find it hard to justify the expense of it especially in any street or light off road applications.

My .02

The scraper I can see being an expensive upgrade. The windage tray I feel would be a bigger improvement due to keeping more oil close the sump.

Buy a Moroso 4.0 oil pan and tell us how it works.

I would, but I'm not so keen on buying a $400 pan that may have clearance issues with my header.

One thing I've always been curious about reference these in our motors; don't our cams rely on oil splashed from the crank to lubricate them?

I believe the cam gets oil from its oil delivery holes.

Just to throw this out there. I've seen reports from life long winning engine builders who tried all manner of crank scrapers. Nothing really worked. What actually worked.. was getting the oil away from the crankshaft. So a really deep pan or not running as much oil. Sometime the pan shape would help if it had a ledge it would peel some of the oil off.

So pans with mesh screens and actual scraping devices were rarely worth it. Now baffles and solid inserts that separate oil reserve from the crank seem like a good idea.

These were race engines, too. Not 4200 peak rpm, 140hp engines.

Sailboy42 wrote: ↑September 21st, 2020, 10:21 am I believe the cam gets oil from its oil delivery holes.

Maybe I just didn't know, but I am not familiar with those? I mean, I know there are aftermarket lifters with holes designed into them, but stock? You aren't referring to the cam bearings are you?

I am referring to the cam bearings. If your talking about the lifters idk.