 Case inspection prior to rebuild |
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| Cevan |
 Dec 20 2009, 09:10 AM
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#1
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Senior Member  Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351  |
What is the normal practice in terms of inspecting the case halves prior to a rebuild? Is this something I can do myself?
All the bearing surfaces looked fine and the connecting rod play was between .008 and .010. Assuming I don't see any visual signs of damage, does it need to be sent to a professional who I assume has an expensive tool that checks the alignbore? |
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| underthetire |
Dec 21 2009, 01:30 PM
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#2
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
QUOTE(Cevan @ Dec 20 2009, 07:10 AM)  What is the normal practice in terms of inspecting the case halves prior to a rebuild? Is this something I can do myself? All the bearing surfaces looked fine and the connecting rod play was between .008 and .010. Assuming I don't see any visual signs of damage, does it need to be sent to a professional who I assume has an expensive tool that checks the alignbore? Now i have not done a type 4 yet, did a T1 years ago. Worked in high school as a automotive machinist ( couldn't stand that dirty loose tolerance stuff ! ) but .008 to .010 sounds like a lot of clearance to me. I would think .002-.004 would be more the norm. Maybe i'm wrong again, i'm used to working on .00001 of an inch stuff now. |
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| Cevan |
Dec 21 2009, 03:06 PM
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#3
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
QUOTE(underthetire @ Dec 21 2009, 02:30 PM) QUOTE(Cevan @ Dec 20 2009, 07:10 AM) What is the normal practice in terms of inspecting the case halves prior to a rebuild? Is this something I can do myself? All the bearing surfaces looked fine and the connecting rod play was between .008 and .010. Assuming I don't see any visual signs of damage, does it need to be sent to a professional who I assume has an expensive tool that checks the alignbore? Now i have not done a type 4 yet, did a T1 years ago. Worked in high school as a automotive machinist ( couldn't stand that dirty loose tolerance stuff ! ) but .008 to .010 sounds like a lot of clearance to me. I would think .002-.004 would be more the norm. Maybe i'm wrong again, i'm used to working on .00001 of an inch stuff now. Accordinging to Tom Wilson's book, .027 is the wear limit for connecting rod side clearance with .004-.016 being within spec. Hey Rich, the cost of a piece of machinist granite or some other flat surface is probably more than the cost to have a shop measure up the case. Plus, I'd rather not remove the head studs if I don't have to. Of course, finding a shop around where I live that can do this for me is a whole other issue. |
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Posts in this topic
Cevan Case inspection prior to rebuild Dec 20 2009, 09:10 AM
DNHunt If you have a dial bore gauge you can measure the ... Dec 20 2009, 09:53 AM Cevan There are at least 3 shops in my area that work on... Dec 20 2009, 12:06 PM hcdmueller Make sure you get the registers checked out. I ha... Dec 20 2009, 02:44 PM HAM Inc Less than an hour ago I decked the case that we... Dec 20 2009, 03:54 PM davep Len, In your experience, is the sagging more an is... Dec 21 2009, 12:34 PM r_towle Chris,
For a farmer check...for those of us at hom... Dec 21 2009, 01:13 PM underthetire Oh, sorry. Thought you meant bearing clearance. My... Dec 21 2009, 03:10 PM HAM Inc
Dave I don't see to many of the cases I deck ... Dec 21 2009, 04:10 PM
Cevan
If the head studs are removed I charge $150.... Dec 21 2009, 06:35 PM ConeDodger All three cases that I have checked had sunk at th... Dec 21 2009, 04:42 PM Jake Raby Yes, studs need to be removed to do the procedure ... Dec 21 2009, 07:23 PM r_towle Chris,
Contact William Harris via this site.
He u... Dec 21 2009, 08:04 PM HAM Inc
Yes, the studs should come out. Use heat if you h... Dec 22 2009, 09:19 AM |
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