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Author
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Topic: Scatter shield runout/centering? Moneymaker?
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H8CHEVY
Gearhead Posts: 286
From: Southern Cali
Registered: Jun 2000
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posted 06-17-2002 01:29 AM
   
How do you center a Lakewood Scattershield? I know I will need a dial indicator, to check the runout. But how do you setup the dial indicator on the crank, and know it in it's self is centered? Can someone take me through the best process of doing this? thanks... ------------------
"In the wise words I was once told bye Jiggy"
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Rory McNeil
Gearhead Posts: 1687
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 06-17-2002 03:22 AM
You need to check for runout from the crank ceterline, as well as for being perpandicular to the back of the block. I used a magnetic based dial indicator, mounted on the crank for both tests. For concentricity, put the plunger of the dial indicator on the inside of the bore, & rotate the crank a full revolution, noting the amount & location of the mis-alignment. This can be adjusted using Lakewoods off-center bellhousing dowel pins, which come in 3 different amounts of offset. To check for being perpandicular, mount the plunger on the flat area of the scattershield, where the transmission mounts, about 1" from the bore center.Rotate the crank again to get your readings.Adjustments can be made by using front suspension wheel alignment shims between the block & the housing. On my 428`s scattershield, I needed to move the housing upwards by .017", but the backside was OK. Hope this helps. By the way, I got my offset dowels from Summit, who had them in stock.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
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Buster
Gearhead Posts: 1635
From: Hurricane alley
Registered: May 2002
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posted 06-17-2002 08:40 AM
So much for making something that fits correctly to start with....
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 06-17-2002 09:59 AM
That's about it.  ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl
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SundanceKid
Gearhead Posts: 1274
From: UT
Registered: Feb 2001
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posted 06-17-2002 02:30 PM
How do you know the dial indicator is centered? basicly, if you get a reading that is off how do you know it's the bellhousing and not a human error caused by not centering the dial indicator properly?Also what kind of measurment is needed and where can you get a dial indicator from? Price? Or dare I ask?
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SundanceKid
Gearhead Posts: 1274
From: UT
Registered: Feb 2001
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posted 06-19-2002 03:17 PM
Anyone?
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Butch Jennings
Gearhead Posts: 633
From: No. California
Registered: Apr 2000
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posted 06-19-2002 03:33 PM
The dial indicator doesn't need to be centered.------------------
Butch
460 powered 1967 Comet Cyclone
10.271 @ 130.231
Butcher's Home Page
"Friends don't let friends drive Chevys"
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cpmaverick
Gearhead Posts: 1666
From: Santa Clarita, CA
Registered: Jan 2000
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posted 06-19-2002 04:02 PM
If you bolt it securely to the crank and the crank spins then it will always remain in the same relationship to the crank. As long as the relationship from the bellhousing to the crank is within spec then you are OK. ------------------
-Charlie Ping
1970 Maverick Grabber
[email protected] with AC and overdrive.
http://www.maverickgrabber.com
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SundanceKid
Gearhead Posts: 1274
From: UT
Registered: Feb 2001
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posted 06-20-2002 11:33 PM
Ah, I was over thinking it! Thanks. I bought an actualy decent Dial indicator from Harbor Freight. They even had a good magnetic base as well. The indicator seemsnice and tight and should be pretty accurate for an analog. The salesman said you have to be carefull because there are two differant types being sold in the same box.
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SundanceKid
Gearhead Posts: 1274
From: UT
Registered: Feb 2001
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posted 06-21-2002 04:11 PM
I measured my bellhousing today. It had a runout of .008-.009 Will I be ok with this amount of runout? I think I've read somewhere .005-.006 is the maximum? Thanks for all the help.
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