|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 1999
Location: Boulder, CO, USA
Posts: 392
|
Oil Gallery Plug Sizes?
Has anyone replaced all the oil gallery plugs with npt plugs? Can you tell me the sizes of plugs and quantity you used? I have measured the rough oil gallery diameters and am putting together a list but wanted to sort of double check. I am planning on tapping every single hole that currently has a stock plug-is there any reason this isn't a good idea? I've heard about people leaving in certain plugs on other applications but I'm not sure that applies here. I would post the list of plugs I think I need but of course it's on my home computer-I can add it later if anyone is curious. Thanks!
Ben |
||
04-01-2003, 10:46 AM
|
|
|
Registered
|
3/8 NPT. Use a 9/16-in drill to ream the holes to size after removing the plugs, then tap with a 3/8 NPT tap. I used allen head plugs. When you do the rear of the engine, be sure to set the plugs fulsh with the boss area or else they will hit the flywheel. Measure the depth of the thread to the oil passage, if you insert a plug too far, you will block off a passage. This is especially true on the plugs by the oil filter on the front of the case.
Ed
__________________
Basically, I'm One Giant Train Wreck. http://community.webshots.com/user/evill914 |
||
|
04-01-2003, 12:44 PM
|
|
|
Registered
Join Date: Jul 1999
Location: Boulder, CO, USA
Posts: 392
|
Even the 8mm holes? Why not a 1/8" NPT?
|
||
|
04-01-2003, 12:55 PM
|
|
|
Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
|
If you are doing all or most of the plugs then there are 3/8, 1/4 and 1/8 NPT plugs. I don't know the exact count and I can't check till tomorrow.
I'm doing this to 2 cases right now, 1 I bead blasted the other just hot tanked. I cleaned the cases 3 times with a powerwasher then pulled some plugs. Both cases still had crap in the oil passages. 
|
||
|
04-01-2003, 01:29 PM
|
|
|
Registered
Join Date: Aug 2002
Location: Kalamazoo, MI
Posts: 136
|
Plus, if you have a cam/lifter combination go flat, it makes scrubbing the oil galleys much easier to get all the metal out of the corners....
Don't ask me how I know....  Later, Tom |
||
|
04-01-2003, 08:26 PM
|
|
|
Registered
Join Date: Jul 1999
Location: Boulder, CO, USA
Posts: 392
|
My plug size count
I checked my notes:
Front side of engine (impellar) 2x 3/8" NPT plugs 1x 1/8" NPT plugs 1x plug for 20mm diameter hole Left-Dr side None Rear-flywheel 3x 3/8" NPT Right-Pass side 4x 1/4" NPT plug I do want to look into this before I buy the plugs because I thought I've used 1/8" NPT plugs for the holes behind the flywheel, so maybe I've overestimated the sizes needed. |
||
|
04-01-2003, 10:45 PM
|
|
|
