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Home » Public Forums » GMCnet » [GMCnet] Rettig Brothers engines/Oil Analysis?
[GMCnet] Rettig Brothers engines/Oil Analysis? [message #141219] Sat, 27 August 2011 12:30 Go to previous message
Dolph Santorine is currently offline  Dolph Santorine   United States
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma:
Senior Member
I'm still piecing together the history on my donor coach, and the last question is the engine.

It was rebuilt by Rettig Brothers in Modesto, CA.

Does anyone have any experience with this company?

Also, is there a baseline for oil analysis for the 455? We always analyze the oil on aircraft, so we have a known baseline. I've done oil analysis some automotive engines that I've built, and learned that it's almost always better to have some baseline for the power plant under scrutiny.

The engine runs strong and smooth, the oil pump is questionable (and would be replaced), but based on compression numbers and a lot of time peering through a borescope (high definition/digital... actually made for medical procedures - thanks to my neighbor), I'm willing to bet that the tolerances are spot on all around the internals of that engine.

It's going to come out, and the mains and rod bearings will be carefully checked, as will the valve train.

Being of the "if it ain't broke" school, yet wanting to avoid problems on the road, I would appreciate input and experiences.


Dolph Santorine

DE N8JPC
Wheeling, West Virginia
dolph@dolphsantorine.com

1977 GMC 26' Palm Beach
TZE167V100820

1976 GMC 26' Donor Coach
TZE166V101610







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