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Search: Posts Made By: lr172
Forum: RV Ongoing Maintenance Issues 10-17-2022, 08:20 AM
Replies: 42
Views: 5,974
Posted By lr172
From my understanding, the hollow dowels in the...

From my understanding, the hollow dowels in the through stud bores were only used on the narrow deck engines and some early WD transition engines. After the 70's, interference fit (Lyc calls them...
Forum: RV Ongoing Maintenance Issues 10-11-2022, 09:51 AM
Replies: 42
Views: 5,974
Posted By lr172
That makes sense. YOu can see where the fretting...

That makes sense. YOu can see where the fretting and broken o ring allowed pressurized oil from the journal cavity to reach the through stud bore.

The pics show what appears to be almost 1/16" of...
Forum: RV Ongoing Maintenance Issues 10-10-2022, 12:00 PM
Replies: 42
Views: 5,974
Posted By lr172
I would not recommend this approach. A through...

I would not recommend this approach. A through bolt that has loosened up a bit due to fretting is not going to pour oil out; Just doesn't make sense. I remain of the opinion that the amount of oil...
Forum: RV Ongoing Maintenance Issues 10-08-2022, 12:16 PM
Replies: 42
Views: 5,974
Posted By lr172
That would be my guess as well. Highly likely...

That would be my guess as well. Highly likely that any crack in that area will be visible on the interior. So stick some mirrors or a borescope in there and examine the upper web area and see if...
Forum: RV Ongoing Maintenance Issues 10-07-2022, 08:18 AM
Replies: 42
Views: 5,974
Posted By lr172
The middle through bolts are what creates the...

The middle through bolts are what creates the rear #2 cyl attach studs and the #3 forward studs. The top through bolt bore through the webs is less than an inch from the bored passage in that web...
Forum: RV Ongoing Maintenance Issues 10-06-2022, 07:28 AM
Replies: 42
Views: 5,974
Posted By lr172
An interesting test would be to clean again and...

An interesting test would be to clean again and rig an adapter to add compressed air at the oil pressure port. Run 50 PSI into the oil system and observe. It may be easier to watch the oil appear...
Forum: RV Ongoing Maintenance Issues 10-05-2022, 08:41 AM
Replies: 42
Views: 5,974
Posted By lr172
Pooling oil after a 30 second engine run is a...

Pooling oil after a 30 second engine run is a really bad sign. That is a serious leak! I don't see a bad oring at the base flange loosing that much oil in 30 seconds. It has to get past a tight...
Forum: RV Ongoing Maintenance Issues 10-04-2022, 09:26 AM
Replies: 42
Views: 5,974
Posted By lr172
throw some talc powder up there then blow off...

throw some talc powder up there then blow off with compressed air. It tends to stick to oil and highlights the oil path. Due to gravity, it tends to leave only a limited trace between the PR tube...
Forum: RV Ongoing Maintenance Issues 10-04-2022, 09:23 AM
Replies: 42
Views: 5,974
Posted By lr172
Look for oil streaming from the bottom of the...

Look for oil streaming from the bottom of the case up by the flywheel. A leaking front oil seal can be significant and the air flow will stream that oil along the bottom of the case all the way from...
Forum: RV Ongoing Maintenance Issues 10-03-2022, 11:36 AM
Replies: 42
Views: 5,974
Posted By lr172
While that is a good idea, they don't leak due to...

While that is a good idea, they don't leak due to insufficient torque. They are interference fit bolts and excessive case movement causes wear between the stud and case hole. Once you get a thou or...
Forum: RV Ongoing Maintenance Issues 10-03-2022, 08:35 AM
Replies: 42
Views: 5,974
Posted By lr172
The base O ring is a pretty uncommon place for...

The base O ring is a pretty uncommon place for oil leaks. When mine appeared to leak from that area, it was actually the push rod tube seals that were the source, just hard to see the oil on the top...
Showing results 1 to 11 of 11

 
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