To bypass or not to bypass...
#1
To bypass or not to bypass...
I am wrapping up the bottom end on my 489, and I am undecided on whether to install a 30 lb bypass in the oil filter pad on the block (Gen VI), or to block it off altogether as some have done. I have seen all the arguments for and against doing this, and for the most part I like the idea of making sure ALL of the oil hits the filter before it gets to the bearings. My one limiting factor is that I am using a thermostatic sandwich adapter that mounts the filter low on the block in the stock location, and clearance is kind of tight in this area. Not much room for a big filter here. I plan on running a Melling 10778C pump and 15W40 oil.
Anyone have an opinion on this?
Anyone have an opinion on this?
Last edited by Budman II; 05-09-2013 at 09:39 AM.
#2
Hmmm, almost 100 views, and no one has an opinion on this?
No problem. I think I am going to go ahead and install a 30 lb bypass, since I am limited on filter size due to the location. Probably splitting hairs either way.
No problem. I think I am going to go ahead and install a 30 lb bypass, since I am limited on filter size due to the location. Probably splitting hairs either way.
#4
#5
Registered
No, the 20mm was a little to loose. I'm using a 13/16 plug that I turn down the height in the lathe. I couldn't find one short enough, so I just make it shorter. I use to just tap it for 1/2" NPT. It worked great, but it's a pain and it eats up taps. Most pipe taps are not made for cast iron, especially cast iron with a high nickel content. The hole is the perfect size to tap, but you have to be sure to tap it all the way to the bottom so that the plug screws in far enough. If not, it will stick up a little past flush and could hold up the filter adapter from sealing.
I do stake them just a little bit. But, I coat the plug in Loctite before I bang it in. The 13/16" is a tight fit. Between the tight fit and the Loctite, it's not going anywhere. The stake is a little extra insurance.
Eddie
I do stake them just a little bit. But, I coat the plug in Loctite before I bang it in. The 13/16" is a tight fit. Between the tight fit and the Loctite, it's not going anywhere. The stake is a little extra insurance.
Eddie
#6
No, the 20mm was a little to loose. I'm using a 13/16 plug that I turn down the height in the lathe. I couldn't find one short enough, so I just make it shorter. I use to just tap it for 1/2" NPT. It worked great, but it's a pain and it eats up taps. Most pipe taps are not made for cast iron, especially cast iron with a high nickel content. The hole is the perfect size to tap, but you have to be sure to tap it all the way to the bottom so that the plug screws in far enough. If not, it will stick up a little past flush and could hold up the filter adapter from sealing.
I do stake them just a little bit. But, I coat the plug in Loctite before I bang it in. The 13/16" is a tight fit. Between the tight fit and the Loctite, it's not going anywhere. The stake is a little extra insurance.
Eddie
I do stake them just a little bit. But, I coat the plug in Loctite before I bang it in. The 13/16" is a tight fit. Between the tight fit and the Loctite, it's not going anywhere. The stake is a little extra insurance.
Eddie
Thanks!
#7
Registered
It wasn't that the 13/16" plug was to large, it was to deep. Your 20mm plug may be to deep as well. They are all offered in differing depths. I felt the 20 mm was to loose. Personally, I would be concerned running it. That's why I went to the 13/16". You don't have to turn it in a lathe if its to deep. You could always use a grinder, belt sander, etc.
Eddie
Eddie
#8
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Tom, I do not know about using that style plug, have always threaded block way before assembly of engine and cleaning. You better go with Eddies, recommendation; if he has used both a expansion plug and pipe plug. If this thing is already together, I would be concerned with any small metal sliver, that could contaminate your oil galley.
#10
Tom, I do not know about using that style plug, have always threaded block way before assembly of engine and cleaning. You better go with Eddies, recommendation; if he has used both a expansion plug and pipe plug. If this thing is already together, I would be concerned with any small metal sliver, that could contaminate your oil galley.