View Single Post
  #17   IP:
Old 07-12-2019, 06:52 PM
Dave Neptune Dave Neptune is offline
Afourian MVP
Join Date: Jan 2007
Location: Lake Arrowhead Ca.
Posts: 4,053
Thanks: 429
Thanked 384 Times in 266 Posts
Greg, my ole E-35 MKII idled at about 15" of vac but at cruise I got 2100RPM's @ 6~7" of vac with the Indigo. I could go much harder when necessary but why bother as I was getting 6.2 kts with a 25'6" waterline.

Your engine is lugging bad if you are at anything under 4" @1450RPM's, IE only about 10HP. With the Indigo I could get 25~2600 wide open or about 25HP. I would guess the cruise load to of been around 15HP or just about a gallon an hour. Load duty gas engines make around 2HP per pound of fuel per hour when running well.

Dave Neptune
Reply With Quote