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What a crank-scraper is and other technical info... Some comments on our products...
Alfa-Romeo, AMC, BMC, BMW, Buick, Buick-Rover, Cadillac, Chevrolet, Chrysler/Mopar, Datsun-Nissan, Fiat-Lancia, Ford, GM, Honda/Acura, IHC, Jaguar, Lotus, Mazda, Mercedes, MGA/MGB, Mitsubishi, Oldsmobile, Opel, Pontiac, Porsche, Renault, SAAB, Studebaker, Suzuki-Geo, Toyota, Triumph, VW, Volvo

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.


L4: scraper and pumping deflection baffle $99.95    Teflon bladed scraper version of set $229.95

Steel scraper alone: $59.95

This engine has a number of oil control issues starting with an overly high fill level in combination with a pickup that has an opening so high above the floor of the pan that about 1.5 quarts is unavailable during running.

The additional oil does allow a higher residence time for air release and helps to keep the average oil temperature down.  However, both of these are at least partially a result of the high oil level in the first place -- a vicious circle of sorts.

It is suggested that the pickup level be lowered.  It is also suggested that a drain be made at the lowest level of the pan and be protected by a skid plate.

The deflection baffle helps to more efficiently reflect airflow surges from the cylinders to oneanother.  There are oil witness marks that indicate a poor pumping pattern.  This is primarily an unintended consequence of dividing a V8 engine in two with the downstroke "pressure" side pan volume being too large and irregularly shaped.  The bank of pistons enters at an angle unusual for a straight four. The deflection baffle still allows the shielded volume to be available but its movement is damped.

Here is a picture of the interior of a well used oil pan.  The circled discolored area indicates very little oil flow and that is abnormal and undesirable. 

Triumph block interior:

Copyright 2002-2018 © 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.