Re: Manifold header is ugly
Purdy - When the "Otwell Health Heater" people redesigned their heater (with the dip in the middle of the top), they also added a 'Heat Escape' door at the rear of the top, to allow heat to escape out into the engine compartment and NOT go into the interior of the cab. When the heater door to the firewall was closed and the connecting pipe from the heater to the firewall was removed for summer driving, this worked very well to prevent heat from entering the cab.
Also, on the new 'Improved' models with the 'dip' in the middle of the top (to allow access to the distributor), the dip creates a comfortable air space between the heater top and the distributor condensor. This increases the life expectance of the condensor - especially if an A&L 'heat proof' condensor is used.
- Doug Vieyra, Eureka, Calif
Western Sales Division, Othwell Health Heaters, Inc.