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Forum: Scarab

01-07-2006, 07:52 AM

Replies: 5

approximate fuel consumption for ScarabIII and Mercruiser MCM370hp

Views: 4,075

Posted By jlavallee

Re: approximate fuel consumption for ScarabIII and Mercruiser MCM370hp

THIS IS FOR 2 ENGINES!!!!
Got some interesting numbers for you… RPM v US Gal per Hour Consumption for 7.4L Mercruisers:
1000
3.5

2000
6.8

2500
18

Forum: Scarab

11-10-2005, 07:52 AM

Replies: 13

Scarab III's

Views: 2,339

Posted By jlavallee

Re: Scarab III's

Hello--Just finished my first season with my Scarab 111--I love it!!! The weight, speed--and comfort--Nice boat. TRS drives are terrific if maintained properly. It's an 86 with 454's.

Forum: General Q & A

08-30-2005, 12:45 PM

Replies: 2

Cooling System Question--Fresh Water System

Views: 3,398

Posted By jlavallee

Re: Cooling System Question--Fresh Water System

Can anyone tell me proper running water temp on a scarab with 454's? Also--what temp thermostats ------considering water pressure. ?
I've heard of drilling 3--3/16th holes in the thermostats to...

Forum: General Q & A

08-30-2005, 10:19 AM

Replies: 5

Removing thermostats on carburated Mercury Outboard

Views: 5,893

Posted By jlavallee

Re: Removing thermostats on carburated Mercury Outboard

Eliminating thermostats revents the engines from reaching operating temperatures. Also--Water pressure exceeding 30 PSI will blow hoses. You probably do not have water pressure gages?
I have 454's...

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