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Re: Ishihara-Johnson Crank Scrapers
[Re: Max Weg]
#875337
12/09/10 02:47 AM
12/09/10 02:47 AM
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Joined: Aug 2003
Posts: 43,232
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,232
Bend,OR USA
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I make my own crankshaft scrapers for B-RB and 426 Hemi out of soft aluminum sheets. I shoot for .030 to .060 clearances on steel rod motors and .075+ on aluminum rod motors 
Last edited by Cab_Burge; 12/09/10 03:57 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Ishihara-Johnson Crank Scrapers
[Re: Locomotion]
#875338
12/09/10 03:13 AM
12/09/10 03:13 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Actually I recently had my first teflon scraper sent to my engine builder. I've been running the regular ones. Never read the instructions for the teflon version, but from what I recall, they can be set pretty close and are suppose to be "self-clearancing".
I see they have your pic on their web site ... congrats
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Re: Ishihara-Johnson Crank Scrapers
[Re: slantzilla]
#875343
12/09/10 11:08 PM
12/09/10 11:08 PM
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Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
Quicksilver440
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
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Quote:
I have a Johnson scraper in my Slant. I have never been able to get Kevin to provide any proof as to how much gain there is. Whenever I asked him he started quoting off the wall numbers for 4.6 Fords and such. 
You wanted dyno results from a /6? 
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Re: Ishihara-Johnson Crank Scrapers
[Re: Max Weg]
#875344
12/09/10 11:45 PM
12/09/10 11:45 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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You can use the scrapers with a windage tray..there are some very neat engineering on some one off scrapers that you wouldnt see commercially. Believe me, a lot of the stock eliminator guys use these succesfully, and Kevin has made some very trick scrapers with special additions and requirements.
You want .040 clearance on a standard steel scraper that does not use the Teflon. On the Teflon lined versions, you can run with an interference fit with the Teflon. yes it actually will self clearance to some degree.You aim for a "slight" drag.There are several methods to secure the scraper properly so it doesnt move, I have my methods, but the everday accepted practice is to lay a bead of silocone on the pan rail after doing your final ,mock up and check fit,mark it, then place the scraper in the bead of silicone. Let it set up.Smear silicone again on the surface of the scraper tht will be against the windage tray. Double check for fitment and any interference,then silicone your oil pan and install against windage tray.
Thats a pretty simple , quick explanation .If I get the time, I'll post a Teflon scraper pic later.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Ishihara-Johnson Crank Scrapers
[Re: CompWedgeEngines]
#875346
12/10/10 01:26 AM
12/10/10 01:26 AM
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Joined: Jan 2010
Posts: 139
Canada
Max Weg
OP
member
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OP
member
Joined: Jan 2010
Posts: 139
Canada
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Quote:
You can use the scrapers with a windage tray..there are some very neat engineering on some one off scrapers that you wouldnt see commercially. Believe me, a lot of the stock eliminator guys use these succesfully, and Kevin has made some very trick scrapers with special additions and requirements.
You want .040 clearance on a standard steel scraper that does not use the Teflon. On the Teflon lined versions, you can run with an interference fit with the Teflon. yes it actually will self clearance to some degree.You aim for a "slight" drag.There are several methods to secure the scraper properly so it doesnt move, I have my methods, but the everday accepted practice is to lay a bead of silocone on the pan rail after doing your final ,mock up and check fit,mark it, then place the scraper in the bead of silicone. Let it set up.Smear silicone again on the surface of the scraper tht will be against the windage tray. Double check for fitment and any interference,then silicone your oil pan and install against windage tray.
Thats a pretty simple , quick explanation .If I get the time, I'll post a Teflon scraper pic later.
I have ordered one with the teflon option and will give it a try. I just was curious to see if anyone had done a Dyno session with and without. I intend on using dowel pins just like a typical crank scraper. Do you use the down stroke scraper? If so is the downstroke clearance the same?
Thanks
Max Weg
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Re: Ishihara-Johnson Crank Scrapers
[Re: VanishPt]
#875349
12/10/10 06:20 PM
12/10/10 06:20 PM
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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The Ishihara-Johnson scraper has a full pan rail.
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
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Re: Ishihara-Johnson Crank Scrapers
[Re: VanishPt]
#875350
12/10/10 06:34 PM
12/10/10 06:34 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Quote:
It woulds seem that the oil pan would no longer lay flat on the rail if you install a piece of metal on just one side of the rail.  What would keep the oil pan from leaking if it were not sitting flush all the way around?
It is bolted to the main caps and does not interfere with the pan rail unless my eyes are playing tricks on me. 
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Re: Ishihara-Johnson Crank Scrapers
[Re: VanishPt]
#875351
12/10/10 07:06 PM
12/10/10 07:06 PM
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Joined: Feb 2005
Posts: 4,318
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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Quote:
It woulds seem that the oil pan would no longer lay flat on the rail if you install a piece of metal on just one side of the rail. What would keep the oil pan from leaking if it were not sitting flush all the way around?
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Re: Ishihara-Johnson Crank Scrapers
[Re: BSB67]
#875352
12/10/10 07:18 PM
12/10/10 07:18 PM
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Joined: Jan 2003
Posts: 2,521
Richmond Va, KeislerTKO 60...
VanishPt
master
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master
Joined: Jan 2003
Posts: 2,521
Richmond Va, KeislerTKO 60...
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DOH.  that explains it. Thanks for the info and the picture. How would you get one of those made for a motor in the car. Call up a guy and say " I have a Callies 4.5" stroke crank on a Hemi. Please send me one."?
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at least) but I'd say its worth a call or email/PM to Kevin as well, you'll get a genuine answer
