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What a crank-scraper is and other technical info... Some comments on our products...

Please remember that we make these products to order.  Some of the most popular designs are kept in stock by our distributors.  There are hundreds of different engines listed with thousands of variants. 

We can  do custom stroker or knife-edge crank designs.  We can provide plastic templates for initial fitting and adjustment. Plastic templates cost $100 and are a separate charge from the scraper pattern chosen.

We have included some representative pictures of the scrapers we make.  If you would like to see a picture of a particular scraper please ask -- we would be more than happy to send one through.

When available (please enquire) our zero-clearance Teflon® scrapers run an additional $130.00 to the cost of the standard steel scraper unless noted.

Remember, your vehicle may have an engine made by a different manufacturer so check both product lines.  If you are still unsure, please contact us.



Remarks on Porsche 928 2/6 and 944 2 rod bearing failure

Kibort Effect

Kibort Effect understeer   http://www.youtube.com/b1JSv6WxigU

Kibort Effect neutral   http://www.youtube.com/NUh7KtFq09Y

Kibort Effect oversteer   http://www.youtube.com/-E5jNo0KfEk

Porsche 924, EA831 2.0 L I4 Audi/VW engine: Dual scraper that works on both the up and downstroke $149.95

Upstroke section:   Downstroke section:

Teflon® bladed version: $279.95

Here are some pictures of the bare Teflon® framework and dual scraper:

Porsche 924 Windage tray setup.  The kit includes the dual scraper as part of the subframe.  Ten socket head cap screws are included (12.9 grade -- same as factory fasteners, same torque should be used).  $529.95; Teflon version (below) available for $659.95.

Vaughan Scott, 924 owner and racer writes on 924.org:

"... I've been fine since installing the crank scraper and Accusump. I've even run races pushing 45 minutes without issue."

"Note that the design of the crank
scraper (even the single one I have) fits up very close against the oil pan on the "low" side. This acts then as a baffle to keep all the oil from climbing up the side of the block on the LH turns..."

"... a report on the condition of my bearings, as I replaced my piston rings yesterday, so was able to check them out. After 2 full seasons of racing, the rod bearings look about like a 30kmi street car - in excellent shape!"



Copyright 2002-2019 © All rights are reserved on our product designs -- a great deal of hard work goes into each one.

Teflon® is a registered trade mark of E.I. du Pont de Nemours and Company. Only DuPont makes Teflon® resin sourced by Ishihara-Johnson Crank Scrapers from authorized DuPont licensees.

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Jean-Claude 1919-2003
A good friend.