Ishihara-Johnson Crank Scrapers

 

(727) 808-8602

If you are in need of a dry sump system we suggest you contact Armstrong Race Engineering.  They provide top quality components and many times our scrapers can be used in combination with their pans.

They make top quality parts.

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Makers of Custom Solid Copper Head Gaskets

 

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

 

 

We will try to keep this list updated but if you do not see your engine listed here please ask!  We can  do custom stroker or knife-edge crank designs.  We can provide plastic templates for initial fitting and adjustment.

 

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.

 

Our standard scrapers cost only $59.95 unless noted.  When available (please enquire) our zero-clearance Teflon® scrapers run an additional $100.00 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

 

 

 

Porsche L4: 2.5L 2479cc and 2.7L 2681cc (both 78.9mm stroke as used in 944 variants); 3.0L 2990cc (88mm stroke -- as used in 968, stroked version of scraper)  Customer request led to this advanced composite scraper.  It uses steel with vibration absorbing doubling plates and a sandwiched polymer layer.  Only $79.95

Teflon® stock and knife-edged versions $199.95; the Teflon® version includes the rear screening found on the windage tray setup:

 

NEW! Porsche 924 2.0L: Dual scraper that works on both the up and downstroke $99.95

Upstroke section:    Downstroke section:

Teflon® bladed version: $199.95

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

NEW!  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).  $329.95; Teflon version (below) available for $429.95.

 

 

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!"


 

 

New product:

Windage tray with incorporated crank scraper for the Porsche 944/968 type engines.  We have had good feedback on how the 944 scraper reduces oil pressure variation during racing and this piece is a long requested upgrade from that.  The 968 and 944 Turbo pan have different internal pan baffles and the tray looks different.  The tray is designed to work in concert with the stock pan in controlling oil.

The crank scrapers for the 924, 944 and 968 have been successfully used in racing world-wide for years now. 

 

July 2nd, 2008:

I installed my 944 Turbo Windage tray/Teflon crank scraper and I’m happy to report my oil pressure is consistently 1 bar higher than previously.  Normally after working the engine at sustained high rpms and coming back down to idle I would see the gauge fluctuating above and below the 2 bar line.  Now under the same driving conditions using the exact same oil, I never see below 3 bar at idle.  I just thought I’d share my experience with your product.

Thank you,

Chris Jurkiewicz

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July 29th, 2006:

The Porsche 944S Scraper and Windage tray you made up for us WORKS GREAT!
The engine revs more freely near the top and really pulls. It would actually labor at the top end of the range before.
I wish we had a chance to hit the Dyno but the performance I would say speaks for itself.

Todd Randolph

 

 

Failure of the rod bearings from aeration can easily cause extensive damage to the 944/968 block:

New! Now with additional scraper that works on the downstroke of the engine.

$309.95

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928 -V8

$657.00  Well tested windage control system.  Please enquire.

This system is also carried by our distributors:

928 Motorsports

928 Spares

Paul Anderson of 928 Spares in the UK

 

 

 

 

Copyright 2002-2008 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.

We Ship World Wide!
Jean-Claude 1919-2003
A good friend.