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View Full Version : Does this look right - dialing in scattershield

scherp69
10-22-2009, 05:24 PM
I know I had another thread started, but wasn't sure if anyone would look at it so I started another one. Just wanted to make sure this looks right. Unfortunately I my scattershield didn't have all the nuts with it so I have to wait until the morning to get them and tighten everything down. I got the dial indicator and base mounted and it looks to me like it will do the job. Hopefully I have it right. From this point what I understand is I need to zero the indicator, turn the engine to the 4 marks (every 90 degress) and get the readings. My dial indicator reads in 0.001 so what would be my acceptable readings?? Any advice would be great. For those that are also in this situation, once I have it all figured out, I will post a thread on how to do it with lots of pics. Thanks in advance.

http://i222.photobucket.com/albums/dd68/scherp69/PICT0103.jpg

http://i222.photobucket.com/albums/dd68/scherp69/PICT01082.jpg

http://i222.photobucket.com/albums/dd68/scherp69/PICT0104.jpg
Vegas69
10-22-2009, 05:55 PM
You may have trouble with that much angle and the paint on the surface. All you need to be concerned with is your high and low spot. Find either your high or low spot and 0 the indicator, now rotate it around until you find the opposite of your high or low. That number divided in half is your runout. Anything under .005 is good. I had to use offset dowels and was able to achieve .0055 and said close enough!
gearheads78
10-22-2009, 06:28 PM
I agree you need the indicator close to straight on with the hole. That much angle will give a false reading.
ccracin
10-23-2009, 06:03 AM
It would be easier with an indicator like these.

http://www.starrett.com/download/260_p139_145.pdf
scherp69
10-23-2009, 01:07 PM
I got the rest of the hardware I need to secure the scattershield. Once everything was tight, I was able to adjust the dial indicator to get it as flat as possible. I took two sets readings as I've seen it explained both ways. Doing it the way you mentioned Todd, my high point was 0.045 and the opposite was around .007, so giving me a difference of 0.038.

When I did it the other way, while looking at the scattershield my quarter readings were: .010 at 3 o'clock, 0.041 at 6 o'clock and 0.031 at 9 0'clock. The highest reading was at about 7 o'clock or so.

Now that I know I need new dowels, which sizes would you recommend? Thanks for all the help guys, I really appreciate it.

Hope this looks right:

http://i222.photobucket.com/albums/dd68/scherp69/PICT01092.jpg

http://i222.photobucket.com/albums/dd68/scherp69/PICT01102.jpg

http://i222.photobucket.com/albums/dd68/scherp69/PICT0114.jpg
Vegas69
10-23-2009, 02:14 PM
.019.......................+or- 2
scherp69
10-23-2009, 05:41 PM
Thanks for the help Todd. I just ordered some .21 dowels. The next ones down were 0.14. Hopefully I can get this done next week and get it ready to drop in the subframe. Thanks again.
XcYZ
10-24-2009, 07:29 AM
Is that a Lakewood bellhousing?
GregWeld
10-24-2009, 08:12 AM
You're on the right track. And people often skip this step - at their own expense.

I once had a guy 'help me' on this - he talked a good game - so I set him off in the corner to work while I did some floor mods... Well - I'm inside the hollow body - cutting etc - when I finish up and stop for a minute... I hear this moron banging on stuff and cussing - so I figure I better see what's up.

Well - he's jammed the offsets in the aluminum block - no anti seize etc - and they're in there HARD - and he's galled the aluminum now - and can't turn them with a screwdriver - so now he's got "water pump pliers" on 'em - and man - they're a mess... as in "extract and toss".

He hasn't been asked to help any more.

My rule is - if it doesn't fit or isn't working like it should - then stop and figure out why... Hammers are for carpenters. :>)
GregWeld
10-24-2009, 08:14 AM
Is that a Lakewood bellhousing?


Scott - sure looks to be the right color for a Lakewood...
GregWeld
10-24-2009, 08:18 AM
Here's a YouTube video on how it's done....

http://www.youtube.com/watch?v=9Woh-fS3DJA
Vegas69
10-24-2009, 08:26 AM
Greg...you're really turning into a post whore extrordinare:D
GregWeld
10-24-2009, 08:39 AM
Greg...you're really turning into a post whore extrordinare:D

Says the man with 2200+ Posts!!

EEEEEEEEEHHHHHHHHHHAAAAAAAAAAAAAAAA!!

But it is a true statement.
Vegas69
10-24-2009, 08:45 AM
The pot calling the kettle black!:D
DFRESH
10-24-2009, 05:49 PM
Greg...you're really turning into a post whore extrordinare:D

LOL---now that was funny. Retired = Ability to read and respond to all threads.
GregWeld
10-24-2009, 05:55 PM
LOL---now that was funny. Retired = Ability to read and respond to all threads.

:rofl: :rofl:

I have to tell ya! Being retired - the problem is not what you're going to do all day... but you do have all day to do it in!!
DFRESH
10-24-2009, 06:00 PM
:rofl: :rofl:

I have to tell ya! Being retired - the problem is not what you're going to do all day... but you do have all day to do it in!!


Greg, right now, that sounds awesome--see you in Pahrump!
GregWeld
10-24-2009, 06:14 PM
I have two "sayings" being retired...

My friends used to call and say - "what are you doing today" -- and my stock reply was -- Whatever I feel like!

The other is when someone asks what day it is... because I rarely know.. and when they ask how I couldn't know that. I have to tell them that my week has 6 Saturdays and a Sunday.

It's kinda true. But I AM BUSY!

Pahrump here we come!! See ya all there! We are going to have such a good time! Driving or watching - we're going to soak it all in!

:thumbsup: :thumbsup:
scherp69
11-23-2009, 05:16 PM
Today I tried to do the final dialing in. I need to know if this is close enough. I know I am supposed to try and get the readings to within .0025 difference, but I am at .0035 difference and the offset in my dowels are already turned completely towards the 0. My readings were:
12 o'clock - zeroed
9 o'clock - 14
6 o'clock - 7
3 o'clock - 14

Like I said, the offset in my dowels are already pointed all the way towards 12 o'clock so I don't think I will get them any closer. Will the .001" cause me any problems. Thanks.

Here's a pic of my readings

http://i222.photobucket.com/albums/dd68/scherp69/PICT00834.jpg
Vegas69
11-23-2009, 08:26 PM
You should be able to spin the crank 360 degrees and the needle shouldn't move over .010 from you high on low point. Those reading are very strange. Are the readings the same side to side or +.014/-.014? My guess would be the latter which means you need to move your bellhousing towards the positive side.
scherp69
11-24-2009, 03:50 PM
Thanks Todd. I went back out and checked it. It was a positive 14 and a negative 14. For some reason, I never even paid attention. Today though I was able to get it within .005 both ways. Once I got it there, that was close enough. Thanks again for all the help.

Here's my readings:

http://i222.photobucket.com/albums/dd68/scherp69/PICT000110.jpg