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Eric Scantlebury
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Hello all,

First post - hope for some advice. I inherited my fathers 67 r60/2. I'm getting ready to put it on the road and in doing some maintenance I dropped the oil pan to clean the sludge out of it since it hadn't been done in 10 years or so. In trying to get the pan back up I have discovered one of the holes in the engine is stripped. So now I have the pan slung up under the thing with a new gasket but a stripped screw hole. This might explain some of the oil that I was noticing on the pan and that part of the engine.

When I pulled the screw out of the hole it looked like someone at some point tried to jbweld or something to get the thing to stick as some sort of stuff came out of the hole. Other than this the bike is in real good shape.

In any case - is there a fix for this? Any suggestions welcome.

Thanks,
Eric

Matteo
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Helicoil
Eric Scantlebury
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Thanks, So a helicoil is the

Thanks,

So a helicoil is the way to go? I'm wondering now if the JBweld "stuff" that pulled out was a previous helicoil install? Anyone know of the top of their heads what size helicoil kit to get? Any advice on doing the procedure? I have never done it before but really don't want to screw up on the engine block.

IF what I saw come out of the hole was a previous helicoil can I just up another in without retapping?

Matteo
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I won't claim to have done it

I won't claim to have done it myself, but my machinist friends say this is the way to fix it. The coil is steel so it would be stronger than the Al case. You do need to tap a larger hole that will then accept the coil. The coils come in specific sizes so depending on the final thread size, you need to tap a fixed new thread. You have to make sure your new tap is square, but I think that is the only trick.

Given that this on the oil pan, it is one of many screws, you may be able to get away with just "gluing" in a bolt that will not let oil to leak out. I don't think you have to worry about the mechanical integrity. You just have to deal with the mess each time the oil pan comes off, which isn't very often.

speight1823
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Helicoil

Advice from someone who has worked 50 years as a fitter machinist and professional engineer.
Take it to an automotive workshop and let them do it.
They do this sort of thing often. It is not as easy as you may think.
All the best
Bill

jrapose
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The only "hard" part of that

The only "hard" part of that job is getting a straight hole drilled in the old hole.... I agree about having an automotive mechanic do it... they can put the bike on their hoist and get under that engine...makes the job much easier.... once you have good access the actual job is really easy.... when I do it, I put "helii-coils" om all the holes..only takes a few more minutes to do them all once you are ready to do it.... and they are WAY stronger than threads in aluminimum. When you buy a Heli-coil set it will come with a tube of the inserts (usually 5 or 6) a special drill, a special tap and tool to insert the coils. You can also buy additional coils fairly inexpensive...they make a nice repair...... you will need to special order the kit...metric heli-coils are available but not often in stock at most tool stores. (I live in a rural area)

Joel

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schrader7032
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Should be able to lay the

Should be able to lay the bike over on a jug and get good access to the holes. I've never done it before either but they seem to be common fixes. Maybe it's possible to design a small jig that helps align the drill bit. Say you want to do a specific hole. The jig would be say 25-30mm thick and span 3 holes in the block, on either side of the hole that needs fixing. Use longer bolts in the outer two holes to gently hold the jig, then drill the middle hole. Obviously, it gets harder near the corners, except that the hole to be fixed could be on either end, using the other two to hold the jig. I'm not sure if the holes are evenly spaced around the circumference, though.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Eric Scantlebury
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Well - as luck would have it

Well - as luck would have it the stripped hole is a corner hole. I figure I could create a jig out of wood to span the two adjacent holes and epoxy a brass bushing in the jigs hole which will align to the hole to be drilled but I'm still a little concerned about accessing the hole straight while on my back and if there is enough clearance for the drill even with a jig. I have a call in to my nieces fiancé who works at a place up the road that does work on newer touring bikes (including BMW's - he also owns an 65' R25) to see if they have a mechanic that is more "comfortable" doing this than myself. I'm fairly "handy" when it comes to wrenching things but I really don't want to mess this up.

I assume I can probably drive it the 3 miles up the road without loosing too much oil to the bad bolt section.

malmac
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Also remember the filings that result

When you drill the hole and then cut the new thread for the helicoil - there will be filings/swarf.

I know that using grease on your drill bit and on the tap will greatly assist - but because many of the holes used to bolt the sump on, go straight through to the engine sump, you will need to make sure you clean out this debris from inside after the repair is completed.

Best of luck

Mal

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rimcanyon
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They also make stepped studs.

They also make stepped studs. Most VW repair shops will have some to repair the oil cover studs on VW 40hp cases. Typically they are 8x1.25 on one end and 6x1.0 on the other, and about 1" long.

*IF* the hole for the corner stud goes through into the case interior and the inside of the case is flat at that point, you can also make a temporary repair by screwing a bolt down from the top until it bottoms out against the case. If its the right length it will project the same as the stud and you can use it with the original nut, no problems. If it rotates and won't tighten, use a hacksaw to make a slot in the end and you can use a screwdriver to hold it while you tighten the nut.

-Dave

Eric Scantlebury
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Thanks for all the replies.

Thanks for all the replies. On a side note - anyone have a recommendation for a mechanic that will work on these older machines in the Rhode Island area?

808Airhead
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Do your bike a favor and have

Do your bike a favor and have a TIMESERT installed. This is far superior to helicoil. You can buy a kit on Amazon,it is a M5X1.50 IIRC.

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R69s - R60/2 - R67/2 - R51/3

schrader7032
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San Antonio, TX
Joined: 10/27/2006
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This site shows one location

This site shows one location in RI that is "Airhead friendly". You might contact them and see if they're familiar with this repair or know someone who is.

http://micapeak.com/bmw/Airhead-Shops.html

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'78 R100/7 '69 R69S '52 R25/2

stagewex
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Old Airhead Friendly List

Have that same old list tucked into my laptop. I see Razzee in Kingston, Rhode Island. I traveled there years ago for some parts for my r1100rt. Don't know anything about their service department. Might have to travel a bit or better yet get a recommendation from one of the shops on the list.

Of the 4 MAX BMW's in the northeast at least 2 of them now really specialize in older Beemers having found a real market in restoration and maintenance of these old girls. I'm thinking about the the one in Brookfield, CT where master mechanic Phil Cheney operates out of and also their location in New Hampshire. They do pick-up and delivery as well. Notice that some of the other big BMW dealers like Mortons and Bob's now offer vintage service.

Where in R.I. are you located. I'll be spending a week up in Newport the first week in August and unless its a washout will be riding up or at least trailering my '69 r60/2. Kinda small state but beautiful to ride so wherever you are I'm sure I'll be able to day-ride to you if you are around.

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mike wex/stagewex
1969 BMW r60/2, US Model, 1995 BMW K75, 2006 Yamaha TW200, 2007 Ural Patrol, 1991 Honda XR250L

Eric Scantlebury
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I need to make a trip to MAX

I need to make a trip to MAX BMW and get in touch with Phil Cheney at some point. My bike is at 25000 and I know the slingers have never been serviced. I've seen his name come up on the net in a few places in regards to that service. I've ordered parts through MAX as well. I was just looking for something a little closer to do this more "normal" type of thing. Brookfield, though, is more than 2 hours from my location - a little far for just fixing this.

I'll stop in at Razee if I cannot get this other place to do it and see if they will do it. I used to by all my motocross gear there when I was much younger - forgot they did BMW work.

I'm located in Southern RI on the CT boarder. There are many roads out here that are fun to ride and you don't have to hit a major highway to enjoy them.

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