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I would have a hard time not switching to roller cams while you have the mills apart. Because with my luck at 100 hours I'd lose a lobe or two off of one of the cams and be kicking myself in the a$$ for not making the switch while the motors were out of the boat.
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Originally Posted by 1 MAIDEN AMERICA
(Post 3783298)
I did head gaskets and the cam broke. Do cams.
.030 over, cleaned head and block surfaces(pistons are .010 below deck at TDC, Crane 16HR00110 cam I .610 298* and E .632 306*, Chillers, 3.5 pulley, stock ECU and ignition, 200 hours, 704HP. No black soot, no melted pistons. Dyno fuel #'s were great and the engine was still making power when the limiter kicked in. |
Originally Posted by 4bus
(Post 3783325)
Nice, what kind of speeds are you seeing? What is your rev lmt set at after the ecu map?
104 is all she's got. |
Originally Posted by Knot 4 Me
(Post 3783318)
I would have a hard time not switching to roller cams while you have the mills apart. Because with my luck at 100 hours I'd lose a lobe or two off of one of the cams and be kicking myself in the a$$ for not making the switch while the motors were out of the boat.
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as noted the stock ECU cal leaves a lot on the table
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Originally Posted by 1 MAIDEN AMERICA
(Post 3783492)
Stock ECU and limiter (5350ish)
104 is all she's got. Are you side by side or semi staggered? What drives? Props? I must know more! :lolhit: With the changes you made do you feel the drivability issues were resolved keeping the stock ECU? My issues on both are super rich, high idle after runs, long warm up time with loading up. Thanks |
Originally Posted by 1 MAIDEN AMERICA
(Post 3783298)
I did head gaskets and the cam broke. Do cams.
.030 over, cleaned head and block surfaces(pistons are .010 below deck at TDC, Crane 16HR00110 cam I .610 298* and E .632 306*, Chillers, 3.5 pulley, stock ECU and ignition, 200 hours, 704HP. No black soot, no melted pistons. Dyno fuel #'s were great and the engine was still making power when the limiter kicked in. |
Semi-stagger
Tall windshield Anchor, 5' chain, 100' line No porti-potti 2 people, full of fuel SCX-4 16.8" 5bl 38P 16* Hering 104 @5200 17" 5bl 35P 16* Hering 100 on limiter @5400 w/chillers and 3.5" pulley, 4# boost stock plugs, wires, ECU, limiter, timing, etc. Every once in awhile it'll load up a little but clears out easily and never covers the back of the boat in soot. Even before I ever touched the engines. 705 ft lbs @ 3200 745 @ 4400 718 @ 4900 609 HP @ 4300 699 HP @ 5450 as limiter kicked in BSFC .45 @ 4000RPM-4500 avg .48 to 4800 avg .50 to 5200 .45 @ 5400 |
4bus glad your enjoying your boat! 38 fountain is on my wish list if I ever get back into big blocks. I'm very happy with my outboards. Post some pics of that bad boy!!!
PS. are you going to paint the engines green this winter? You know I got the paint if you need it :lolhit: Gotta have some fun. Congrats with the boat bud! |
Originally Posted by 272bajadriver
(Post 3784218)
4bus glad your enjoying your boat! 38 fountain is on my wish list if I ever get back into big blocks. I'm very happy with my outboards. Post some pics of that bad boy!!!
PS. are you going to paint the engines green this winter? You know I got the paint if you need it :lolhit: Gotta have some fun. Congrats with the boat bud! |
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