[GMCnet] Power ignition timing distoried a good 455. [message #323681] |
Sat, 09 September 2017 23:40 |
BobDunahugh
Messages: 2465 Registered: October 2010 Location: Cedar Rapids, IA
Karma: 11
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We talked about this here a few weeks ago. A friend told me that he was going to do it to his GMC. I told him don't. He called me Wed. And said he should have listened to me. As I told him that I'd never do it to my GMC. Track car . yes. Well, he now has 7 pistons damaged. And one right rear piston with the top blown out. His 455 had just over 36,000 miles on a rebuild. Just something to think about. Bob Dunahugh
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Re: [GMCnet] Power ignition timing distoried a good 455. [message #323710 is a reply to message #323681] |
Sun, 10 September 2017 15:29 |
JohnL455
Messages: 4447 Registered: October 2006 Location: Woodstock, IL
Karma: 12
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Senior Member |
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There were some cockamamie posts on how to set your timing for "max" a while back. One involved WOT brake torque in drive. I warned about this and how there is much more fine skill and art involved, including a variety of driving and weather conditions to get the thing set right. Probably set for max RPM which would be grossly over advanced.
John Lebetski
Woodstock, IL
77 Eleganza II
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Re: [GMCnet] Power ignition timing distoried a good 455. [message #323729 is a reply to message #323710] |
Sun, 10 September 2017 18:56 |
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USAussie
Messages: 15912 Registered: July 2007 Location: Sydney, Australia
Karma: 6
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Senior Member |
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John,
My sentiments exactly, power timing a 26 ft motorhome? What the "F" for? A few extra HP / a bit more torque? So you can out
accelerate who? Why?
It's as dumb as drag racing them! If you want a hot rod build a hot rod!
As we say Downunder; "bloody stupid, Mate, bloody F'n stupid!"
The Maintenance Manuals provide a procedure that will time the engine so that it performs well and DOESN'T S#!T itself!
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of John R. Lebetski
Sent: Sunday, September 10, 2017 3:30 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Power ignition timing distoried a good 455.
There were some cockamamie posts on how to set your timing for "max" a while back. One involved WOT brake torque in drive. I warned
about this and how there is much more fine skill and art involved, including a variety of driving and weather conditions to get the
thing set right. Probably set for max RPM which would be grossly over advanced.
--
John Lebetski
Woodstock, IL
77 Eleganza II
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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