GMCforum: GMCnet » Question for Matt Colie

Home » Public Forums » GMCnet » Question for Matt Colie

Show: Today's Messages :: Polls :: Message Navigator

Re: Question for Matt Colie [message #323116 is a reply to message #323098]

Fri, 01 September 2017 15:49

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma:

Senior Member

JohnL455 wrote on Fri, 01 September 2017 09:30

Why the idle at 350? At that speed I would think oil slinging off the crank would only be thrown about an inch above the rod big end and never get up to the walls or to cool the underside of pistons.

John,

I have seldom decided where I wanted an engine to idle. I always let them tell me. This engine does not like 600~650 and the 1100 to set the timing even less so.

While you concern about lubrication and cooling is understandable. Think about the fact there there is no load on the engine and no BMEP contributing heat to the system. There should still be adequate lube on the cross-head and such low cylinder temperatures, and just the charge air can cool the crowns. A thermocouple in the exhaust stream will read a high temperature because there is not much boundary layer to make it shed the heat even with the engine running so expansively.

Also consider that 360 rpm (close enough) is still 6 revolutions a second and with the high lube oil pressure it is usually showing, I am not worried. If I am wrong, I will know it before the end of October.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

Report message to a moderator

[Message index]

		Question for Matt Colie By: Jim Wagner on Thu, 31 August 2017 20:12
		Re: Question for Matt Colie By: Matt Colie on Fri, 01 September 2017 08:14
		Re: Question for Matt Colie By: JohnL455 on Fri, 01 September 2017 08:30
		Re: Question for Matt Colie By: Matt Colie on Fri, 01 September 2017 15:49
		Re: Question for Matt Colie By: JohnL455 on Sat, 02 September 2017 12:01
		Re: [GMCnet] Question for Matt Colie By: k2gkk on Sat, 02 September 2017 12:34
		Re: [GMCnet] Question for Matt Colie By: Matt Colie on Sat, 02 September 2017 16:26
		Re: Question for Matt Colie By: Matt Colie on Sat, 02 September 2017 16:29

Previous Topic:	Re: [GMCnet] Horn noise maker
Next Topic:	Looking to see if this is something we could use

Goto Forum:

-=] Back to Top [=-

Current Time: Mon May 13 12:35:47 CDT 2024

Total time taken to generate the page: 0.01406 seconds