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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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 $59.95 unless noted.  When available (please enquire) our zero-clearance TeflonŽ 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.

 

Datsun/Nissan

 

 

L4: A10 through A15 -- please specify stroke, L16, L18, L20B, 1500 G 3-main, 1600 R 3-main, 1600 R 5-main, 2000 U20 5-main, H20

New!

A-series crank scrapers in steel and TeflonŽ versions 59mm through 82mm strokes -- please specify engine and stroke. $59.95 in steel; add $100 for TeflonŽ

General A-series windage tray: $159.95  Please note that the scraper is sold separately.

Here is a picture of the tray installed alone -- there are two mounting tabs provided for the tray supports:

Baffles for the A-series type oil front sump pan.  There is a replacement baffle for the sump but with trap doors.  The one in the pan measured had two attachment points that were cracked and broken.  The replacement is made from heavier gauge steel.  Also included is an anti-surge baffle with a trap door leading to the rear of the pan.  Both of these baffles are to be welded or brazed into place.  $99.95

 

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Roadster engines!  1500 G 3-main, 1600 R 3-main, 1600 R 5-main, 2000 U20 5-main, H20

$59.95

R16-5 main example

U20 example

 

  

NEW!  Dual scrapers that work on both the upstroke and downstroke of the engine are now available for the L16, L18 and L20B; only $74.95:

 

The picture below show an installed upstroke scraper for the L-series:

 

L20B TeflonŽ upstroke pattern below

       

Here is an example of an installed upstroke pattern for a knife-edged crank:

 

NEW! 

Internal baffles and incorporated crank scraper for Nissan SR20DE, SR20DET, SR20VE, SR20VET, SR16VE.  These new parts are backwards compatible with our crank scrapers and windage trays for the SR20 that sit nestled in the girdle (see next product description in this section).  The versions for the SR16VE and SR20VE and SR20VET will look slightly different due to the absence of a girdle and the partially counterweighted crank.  There is another point of variance and that is if your block is of the narrow or wide form.  The narrow form has both pan rails close to the girdle whereas the wide form (pictured below) has one pan rail that is substantially further away.

The baffles above serve to direct draining oil from the head away from the rotating assembly and to more smoothly guide windage past the girdle arms.  There is a crank scraper for the rod area incorporated into the baffle.  On wide blocks there is another scraper present on the mounting frame.  This scraper can be made into a TeflonŽ version if so desired.  Baffle assembly $249.95; add $100 for TeflonŽ if you have a wide block.

To determine if you have a wide or narrow block is very easy:

Wide:

Narrow:

 

SR20   NEW!  Please be sure to read the last section -- there are now scrapers and windage trays available for the SR20 with complete coverage for the fourth piston bay.  The SR20 design we make is actually a two-layer combination crank scraper and windage tray.  Both layers nestle within the existing main bearing girdle and attach to the existing mounting points for louvered pan baffles.  The layer closest to the rotating assembly has two scraper louvers for each of the first three piston bays.  They are chisel edged with the second larger louvers being relief cut so that it follows the contour of the factory rods and counterweights (other rods can simply be adjusted for by grinding).  The louvers can be bent down or up to get very close tolerance fits.  The last piston bay has a single louver that is bolted to the scraper.  It is made to be removable so that it can be more easily adjusted.  The lower layer is a windage tray that has offset oval drain ports so that the oil removed by the scraper can be ejected but the stream of oil running underneath the tray to the sump will not be directly in line with the louver openings.  This makes it far more difficult for the ejected and draining oil to be re-entrained into the windage cloud.  This tray also allows that layer of draining oil (that allowed by the original cast sump floor) to be even more isolated from the rotating assembly.  This is a continuation of the design philosophy seen in the SR20 which already has extensive windage control features.  The new windage tray also slopes in the same manner as the sump floor it shields.

The SR20 already has a louvered plate that covers the forward two piston bays so why is the scraper and windage tray offered here an improvement?  First, the chiseled scraper louvers in the first three bays approach the rotating assembly much more closely and exactly.  Second, the fourth piston bay is highly obstructed by a cylindrical indentation in the stock sump -- despite this a scraper louver is included forward of that inward facing bulge.  So now all four bays have active windage control.  Third, the incorporated windage tray further isolates the entrained oil that is skimmed from the windage cloud as well as the draining oil from other areas of the engine that passes along the floor of the sump.  In the stock engine this skimmed and draining oil is still exposed to the rotating assembly.

The lower scraper tray alone is available for $89.95; the combination scraper tray and windage tray is available for $109.95. 

We also have a design for the RWD version of these engines.  Two major differences might help you to identify them: the oil pump pickup attaches to the front edge of the girdle and the indentation in the sump for access to the torque converter bolts is longer (see pics below).  Please be sure to mention if you have this type when you order.

We have also added a version for knife-edged cranks.  Please enquire for more information.

 NEW! The louver openings in the scraper plate are now covered with directional screening.

Pictures of the stock engine setup and then the installed combination scraper and windage tray are below:

This picture shows the single stock louvered tray in the SR20

Views of scraper plate installed showing close clearances with rotating assembly

This picture shows the louvers on the new assembly as well as the spacing between the windage tray and scraper plate.

Scraper and windage tray separated -- different spacers are used to keep them apart and also to provide a sloped relationship guiding the oil to the sump

New assembly installed.

View of space between tray and sump floor as well as the indentation obstructing the fourth piston bay.

View of installed assembly under the forward portion of the aluminum sump.

  Forward view of installed assembly showing the spacing between the sump floor and tray.

NEW!  Now available with complete coverage for the fourth piston bay: scraper louvers and directional screening.  The hump in the pan providing access to torque converter bolts needs to be removed by the owner or a local shop.  A formed piece of aluminum is provided to weld into this area to close the pan.  Obviously this modification is not recommended if you are running an automatic transmission.  Add $35.00

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KA24, KA24e, KA24de:  There are dual scrapers available which operate on both the up- and downstroke of the engine.  $74.95

There are also windage trays available for the Ka24, KA24e and KA24de engines. The windage tray is designed to work with the stock pan -- the directional screening panels nest above areas not previously shielded from windage. $169.95

Here is a picture of both the dual scraper and tray for a KA24de installed:

   

New! As of 11-07, there is an updated KA24DE three piece dual scraper design to make fitment easier while the engine is in the car: 

Shown without girdle in place for clarity.

With girdle in place

close-up of downstroke scraper

 

 

 

We have made many custom scrapers and trays for these engines. 

KA24e tray and dual scraper; the tray is custom as it includes the area at the rear of the pan where the indent has been bumped out:

This picture shows how a stock KA24E tray fits within the pan; it works with the existing structure:    

...and fits within the girdle:

 

 

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NEW! L6: L24, L26, L28  -- Now there are dual scrapers for these engines that operate on both the upstroke and downstroke.  Only $74.95

 

We can do a pattern for the L28 Diesel (stroker) but there is a plastic template charge of $35.  You must fit the template to your particular rotating assembly and then return the pattern to us.  There are TeflonŽ versions of these scrapers available for the upstroke scraper.

 Upstroke L28 scraper installed:     

V6: VG30 series

NEW!  Scraper for the QR25DE: $59.95 in steel and $159.95 for a TeflonŽ bladed version.  We have versions for the earlier partially counterweighted crank and the new fully counterweighted crank.  Will work with or without balance shafts installed.  It is totally compatible with the JWT balance shaft removal kit as well.

TeflonŽ version with baffle:

 

Fully counterweighted crank; steel and TeflonŽ versions:

 

TeflonŽ frame installed (baffle with trap door mentioned below is visible):

NEW!  Pan baffle with swinging trap door for the QR25DE.  The key weak spot in the alloy upper sump is the ability of the oil to move out of the sump well and into the shallow end of the pan under sustained hard turns to the right.  This baffle raises the G level that can be sustained in such turns and brings it more into line with the performance of the pan in other maneuvers.  This baffle works with or without the balance shafts and will work with the JWT balance shafts removal kit if about 10 mm is removed from the lower baffle plate edge nearest to it -- this is a very simple modification that will allow the trap door to swing freely.  $59.95    

NOTE: It is very important to check to see if your upper aluminum pan matches the one in the pictures.  The door it fit specifically to the interior of this pan.  Baffles for other sumps are probably possible but you would need to send us the sump (pics first, please).

 

Copyright 2002-2008 All rights are reserved on our product designs -- a great deal of hard work goes into each one.

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

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Jean-Claude 1919-2003
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