pjo046 Posted August 2, 2006 Share Posted August 2, 2006 Now I have all the parts so that I can start assembling my engine. The only problem is that instead of new regular press-in plugs for the main oil gallery I got some flush-seal/dry-seal bolts. The block is already hot tanked, cleaned and painted, so I really don't want to go through all of that again. Does anyone have any good suggestions on how to drill and tap the holes without getting metal-residues inside the oil-gallery? I thought of covering up the whole block, only leaving each side of the oil-gallery exposed, put some paper or something some centimeters into the oil-gallery and then drill and tap. And when I am done I could vacuum clean it, and then drag the paper out again so that it would drag any residues along. What do you guys think? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 2, 2006 Share Posted August 2, 2006 I don't think you need to drill, just tap. I stuffed some paper towels into the oil galley, then tapped, then vacuumed out most of the loose metal, then pulled the paper towel out. On the front there is the oil hole for the timing chain tensioner that is just inside the front of the block. You might want to pay special attention to make sure that that hole doesn't get clogged. Quote Link to comment Share on other sites More sharing options...
pjo046 Posted August 2, 2006 Author Share Posted August 2, 2006 I will have to drill, because one bolt and tap is just to small, and one bolt and tap is just to big. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted August 2, 2006 Share Posted August 2, 2006 You will need to drill for 3/8" pipe, and tap and leave 7 threads on the tap for the correct taper, or about 2/3 the length of the tap. NO you cannot just stuff paper in there, as the front number one main oil hole is only about 3/8-1/2" from the front of the block, and unless you block that hole, you WILL get chips in your main galley to the number one main. Why do you have to tap? If I were in your position I would just insert the press in plug, although it is better to have removable galley plugs, but since your motor is already complted you might as well, just use the press in style. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 2, 2006 Share Posted August 2, 2006 Whoa! I would definitely not do this on an assembled engine!!! 1 fast z is right, just use a press-in plug. I did mine after the machining was done, used the technique I described, then washed the block thoroughly and all that. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted August 3, 2006 Administrators Share Posted August 3, 2006 You will need to drill for 3/8" pipe, and tap and leave 7 threads on the tap for the correct taper, or about 2/3 the length of the tap. NO you cannot just stuff paper in there, as the front number one main oil hole is only about 3/8-1/2" from the front of the block, and unless you block that hole, you WILL get chips in your main galley to the number one main. Why do you have to tap? If I were in your position I would just insert the press in plug, although it is better to have removable galley plugs, but since your motor is already complted you might as well, just use the press in style. I concur and also back up “1 fast Z” 100% on this. Quote Link to comment Share on other sites More sharing options...
pjo046 Posted August 3, 2006 Author Share Posted August 3, 2006 Actually, the block isn't assembled, it's ready for assembling. TonyD sent me some parts from USA, and he was supposed to send me a pair of press-fit plugs, but sent me dry-seal plugs instead. So that's why I have to drill and tap. I guess I'll have to use a high pressure washer after doing it then. But another hot-tanking is unecessary right? Hope so!!! Quote Link to comment Share on other sites More sharing options...
1 fast z Posted August 3, 2006 Share Posted August 3, 2006 Yea you wouldnt need to hot tank again, as hot tanking is to remove oil and residue. You will just need to use some sort of solvent to get any chips out, then wash and re-wash and you will be good to go. Ive had to wash motors as much as three times before, so dont feel bad, haha. Quote Link to comment Share on other sites More sharing options...
pjo046 Posted August 3, 2006 Author Share Posted August 3, 2006 All done. I used 1/4NPT instead of 3/8 NPT, so I didn't have to drill, only tapp. The threads were a bit thin this way, but I used plenty of loctite so I hope it'll be ok. When I went on to install the freeze plugs I found out that Tony had sent me a wrong plug. The plug in the rear of the block(The big one facing the tranny), which size is this supposed to be? I have to try to get hold of one here in Norway. Quote Link to comment Share on other sites More sharing options...
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