7 Bolt Oil Jets

[talonalex92]

Looking for information on how you deleted or disabled your 7 bolt oil jets. Im more interested in welding. Questioning whether you guys welded the jet itself shut, or the hole in the galley itself. I want results of how you did it. Not interested in why or anything more. Tech discussion only please!

 

[gofer]

The bare block I bought that had been previously built by SBR had the jets themselves welded closed, the correct way to do it, however, is to punch them out and plug them by welding the oil port closed. Unfortunately, I've never undertaken this job myself so I don't have pictures to follow.

 

[talonalex92]

Damn..Corey, I honestly though you were going to be the first one with pictures! Do you know if they welded up the stock jets and punched them back in or used new all together? Im really leaning towards welding the block but depending on feedback, I may or may not end up sourcing out a long ass tap and put some stainless set screws in it...

 

[delta448]

I may or may not end up sourcing out a long ass tap and put some stainless set screws in it...

I don't think you'll need a long tap.

In this picture I borrowed from the Magnus Motorsports tech pages, you see the main journals of a 2G engine (keep in mind the oil squirter difference is not between 6/7 bolt, but 1G/2G). The hole in the center of the bearing surface is the location of the 2G squirter.

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[talonalex92]

Excellent! Thats what I was looking for that I couldnt find online. I wasnt sure what galley they are fed from.. Are guys welding the hole closed right underneath the bearing surface and grinding the groove back in? Or are you welding the hole closed at the exit point in the cylinder? I never realized thats where they feed from...crazy..Thanks delta! Any more feedback on the procedure is definatly welcomed.

My long tap reference was my impression of them needing to be plugged from the cylinder end, and not the bearing..makes much more sense now..

 

[bryanwheat]

I drill, tap and install a plug. I wouldn't want to weld that close to the mains on the block. You could possibly distort the block.

 

[BogusSVO]

I drill, tap and install a plug. I wouldn't want to weld that close to the mains on the block. You could possibly distort the block.

I will go +1 on this.

tap and plug would be the way I go.

 

[delta448]

^Exactly. Don't weld there. Shallow drill, partial tap and a dose of locktite on your plug. You can also hammer and punch an exposed thread on the bearing side after you have the plug in place.

 

[gofer]

I agree that the punch/drill/tap idea's better than the punch/weld the oil port, however, would heating up the block to weld that small port up do damage? I don't want to find out the hard way but I can't see it being a problem if its done before the rest of the machine work that would follow.

 

[JacksonAuto]

+3, don't weld. We knock 'em out, tap and install a plug.

 

[talonalex92]

I was thinking that, but I was hoping for the consistency of a weld. I dont have a tig, nor access to one and was pretty hesistant about trying to mig it. The bearing area was an issue too, I dont know about the block warping but I wouldnt put it past it. Im gunna punch those squirters out, and mic them to see about a tap thats close in size. Thanks guys, any more input is definatly welcome!

JAM, why material plug do you recommend? Im thinking SS, with some red or green lock tite. A steel one may be an option, and some loc-tite or jb weld even. Thoughts?