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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,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.

Porsche

 

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.