Super Hawaii
08-16-2008, 09:16 AM
#33
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Cockpit of Red 34
This is the rooster tail from #38 running in a beam sea, you can see the differnt lenght tails from right and left drives as she rolled on the waves.
Not trying to show up your rooster tail because I always loved them on the Areneson boats but the TriMax drives really made a statement when running hard!!!
This is the rooster tail from #38 running in a beam sea, you can see the differnt lenght tails from right and left drives as she rolled on the waves.
Not trying to show up your rooster tail because I always loved them on the Areneson boats but the TriMax drives really made a statement when running hard!!!
08-16-2008, 09:42 PM
#35
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Run right around 55 mph or a little faster?
Do the engines have 3" pipes between the intake manifold and the aftercooler instead of the stock 2.5" pipes and hose? Also is there a welded strap on the pipe from the turbo to the aftercooler that is bolted on the engine somewhere?
Do they turn 3,000 or 3,300 rpm's?
Do the engines have 3" pipes between the intake manifold and the aftercooler instead of the stock 2.5" pipes and hose? Also is there a welded strap on the pipe from the turbo to the aftercooler that is bolted on the engine somewhere?
Do they turn 3,000 or 3,300 rpm's?
08-17-2008, 12:25 PM
#36
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Run right around 55 mph or a little faster?
Do the engines have 3" pipes between the intake manifold and the aftercooler instead of the stock 2.5" pipes and hose? Also is there a welded strap on the pipe from the turbo to the aftercooler that is bolted on the engine somewhere?
Do they turn 3,000 or 3,300 rpm's?
Do the engines have 3" pipes between the intake manifold and the aftercooler instead of the stock 2.5" pipes and hose? Also is there a welded strap on the pipe from the turbo to the aftercooler that is bolted on the engine somewhere?
Do they turn 3,000 or 3,300 rpm's?
The OD of the pipe on the two elbows between the aftercooler and the intake manifold measure 2-1/2". The pipe from the turbo has a clamp attached to a long angle that bolts to the flywheel housing.
These engines are set to 2600 rpm.
My thoughts are based on the 12,000lb weight and a true 300 HP per side the boat should really run closer to 60 mph than 50.
Gold Member
08-17-2008, 09:01 PM
#38
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Easy answers first - 40's were side by side, at least all that I was involved with.
If they are governed for 2,600 I really doubt they are 300 hp. I thought we have a conversation about this boat once before or soemone else with a 40' diesel???
Take those pumps off, take them to a good pump shop, set the deliver at the high end of spec and balance them all to flow at the same cc at max rpm. Don't look for total fuel delivery but balnce all the plungers at max. You might have some inbalance at idle or mid-range but topend will be better and set those pumps for at least 2,800 if not 2,900-3,000 or 1,400+ pump speed. If you can't turn up those revs after that your props are just too big!!!
The Cummins spec was never 2,600 for the 300hp it was 2,800 or 3,000??? but not 2,600 that was the 250hp.
The 2 1/2" question was to see if you had 380hp versions that were turned back down. Some had 2 1/2" pipes but all the 3" where 380 hp engines.
Does it look like the engines were green at one time? If they were then those had their pumps taken off by someone in Fl and set to the low end of 300 hp which means 285 hp at best. Remember Cummins spec is 5% + or - so those engines could be anywhere from 285 hp to 315 hp and still be within spec.
Joe Gere
If they are governed for 2,600 I really doubt they are 300 hp. I thought we have a conversation about this boat once before or soemone else with a 40' diesel???
Take those pumps off, take them to a good pump shop, set the deliver at the high end of spec and balance them all to flow at the same cc at max rpm. Don't look for total fuel delivery but balnce all the plungers at max. You might have some inbalance at idle or mid-range but topend will be better and set those pumps for at least 2,800 if not 2,900-3,000 or 1,400+ pump speed. If you can't turn up those revs after that your props are just too big!!!
The Cummins spec was never 2,600 for the 300hp it was 2,800 or 3,000??? but not 2,600 that was the 250hp.
The 2 1/2" question was to see if you had 380hp versions that were turned back down. Some had 2 1/2" pipes but all the 3" where 380 hp engines.
Does it look like the engines were green at one time? If they were then those had their pumps taken off by someone in Fl and set to the low end of 300 hp which means 285 hp at best. Remember Cummins spec is 5% + or - so those engines could be anywhere from 285 hp to 315 hp and still be within spec.
Joe Gere
08-18-2008, 04:41 PM
#39
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I do have a 40. They are side by side. I just put 17K into balance & blue printing my 502's (now 509's) Motors, Assemblies, drives and tabs now color coded to the boat. This hull, #11 (they only made 13 when Super Hero) and this hull was bought at the Miami show, was sent back to the factory, and the entire inside was replaced with swede. One of a kind! Except for 2 hours (half hour each on the dyno included) they have only been used one weekend, our poker run this past week. Dyno sheet shows a 45 degree climb until limiters kicked in at 430 hp each (I replaced everything with stock except roller rockers so limited to 5050 RPM) Just given a job change, or I'm looking, and am selling it. Pictures available, did 69 prior to rebuild but GPS speedo needs work (I have had no time) so I will not quote till then, but never hit the limiters prior and I had 9, yes 9 people on board for the HRPA Rendezvous. New guages, vinyl (with new wood in cockpit, drives in 2002, and 2003, and new assemblies in 2005. The motors were box new in 2001. I will be posting it on the classified thread if any interest. Send a PM if you want pics before I get to it.
91 Super Hawaii
91 Super Hawaii
