Art
Art
I don't quite understand your post, but what I think you're proposing to do
is to add ductwork from the front of the HVAC box, through the firewall to
provide more airflow into the cockpit. That MAY help with cooling -- quite
a few people have done something similar. BUT, the fairly recent
experience of a friend prompts me to issue a caution: Their engine battery
"exploded", causing a sudden burst of flame. The flame should have
followed the firewall up to the base of the windshield and perhaps been
extinguished for lack of oxygen. Or, at worst, burned through to the
outside of the windshield. Unfortunately, a PO had added a plastic duct
firewall above the passenger's feet. That duct was immediately burned
through, allowing the flame to penetrate the firewall, and follow the
cockpit side of it up behind the dashboard, along the inside of the
windshield, over the passenger's head, etc., all the way to the back of the
coach. Essentially everything above the beltline was burned or badly smoke
damaged. Little damage below the beltline.
Without that ductwork through the firewall, the coach might well have still
been totalled -- but with little or no interior damage.
Just something to think about. I know if I were tempted as you are, I'd
use very fire resistant materials (my custom HVAC box is made of 12 gauge
aluminum).
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com
On Thu, Aug 22, 2019 at 10:33 AM amansfield1104--- via Gmclist <
Sully
Bellevue wa
Art
Art
Why don’t you run the genset and the roof air?
Dolph Santorine
DE AD0LF
Wheeling, West Virginia
1977 ex-Palm Beach TZE167V100820
Howell EFI/EBL , Reaction Arms, Manny Transmission
I changed and put a fuel pump that would mount to the generator. It did not help. I moved the fuel pump off the generator and that did not help.
I never thought about vacuum in the tanks. I not going to leave the cap off the tank, I did not get it tight one time and I had to stop as the smell of gas was to strong. Not going to do that.
I’ve removed the finder liner to allow more air flow around the engine and the headers. I ws going to drop the headers but the center bolt did not want to come out with out some help. I did not feel like fighting them at the time. It was suggested I take the fender liner out. It should help increase the air flow around the headers and under the RV.
Thanks everyone.
Art
Fundamentally there is no reason the Onan cannot run indefinitely while in its enclosure as long as it has 12VDC and uninterrupted fuel.
It is a trivial task to determine if an Onan quit due to a fuel delivery problem: Loosen the carb bowl bolt and see if gas comes out. If it does not then there is a fuel delivery issue. If tuel comes out then the problem lies elsewhere and proceed down that side of the troubleshooting flowchart.
—Jim
Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH
Douglas & Virginia Smith
dsmithy18 at gmail
Lincoln Nebraska
’73 “Canyonlands” since ‘95: “Wanabizo”, Anishinabe Indian for “He gets lost driving” Yes, really.
Quadrabag/6 wheel disks/3;70 final/Paterson QuadraJet/Thorley’s/Sundry other
P&W PT6, no wait, that's the wish list...
--
Jim Kanomata
Applied/GMC, Newark,CA
ji...@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502