Like Tree0Likes

who runs custom power?

Reply
Old 01-14-2002, 08:14 AM
  #1
Registered
Thread Starter
 
thunderdan's Avatar
 
Join Date: Oct 2000
Location: medford, nj usa
My Boats: 37 Active Thunder
Posts: 2,185
Post who runs custom power?

Trying to get and idea who runs custom power. Let us know who's engines you run, how much hp, how relible, what you like and dislike, how they idle, how many hours, are they blown or naturaly aspirated, would you use the same builder again, etc.
thunderdan is offline  
Reply With Quote
Old 01-14-2002, 09:09 AM
  #2
Registered
 
skatermike24's Avatar
 
Join Date: Mar 2001
Location: St.Cloud , Florida Osceola County
My Boats: 1995 Skater 24
Posts: 879
Post

Does this include outboards?
skatermike24 is offline  
Reply With Quote
Old 01-14-2002, 09:24 AM
  #3
Registered
 
26scarab's Avatar
 
Join Date: Mar 2001
Location: st. clair shores mi ,us
Posts: 1,620
Post

I currently run a single naturally aspirated 540.
Myself and a friend (he owns a marine repair shop) did all the machine work and assembly.
I did not dyno the 540 , I originally built the motor as a 502 and had some reversion problems. I dynoed the 502 and that made 625hp , the motor is the same except it is a 540. I'm guessing around 675hp. It makes my non efficient boat run 80 on gps.
I have no dislikes about this motor ,it is very user friendly . It will idle at 800rpms all day without fouling a plug.
Right now it has 50 hours on it and I had one problem which was partially my fault. I broke a lifter, other than that it has been trouble free. I plan on using it one more season and then I will freshen it up.
26scarab is offline  
Reply With Quote
Old 01-14-2002, 09:28 AM
  #4
Guest
 
Posts: n/a
Post

I run a 625HP 454 Whipple charged engine in my 222 Stinger. 5 lbs of boost, 8:1 pistons, Crane Roller Cam. Forged pistons, rods and crank. 454 Magnum heads with no work other than crane valve springs, crane roller rockers and Inconel valves. It was built by Maximum Performance Marine in Wilmington, Del. It ran all last season without a single problem. What a great motor....

- jeff

[ 01-15-2002: Message edited by: JeffreyBoy ]
 
Reply With Quote
Old 01-14-2002, 09:47 AM
  #5
jr
Guest
 
Posts: n/a
Post

I'm running a pair of natural 409's. Comp Cam, World Heads ported and polished, 1.6 roller rockers, Eagle Crank, Speed Pro Pistons, Bowtie Block, Performer Intake, and Holley carb. I built them and I'm pretty happy with them. They idle good, and have plenty of power. But I need to spend time tuning them. I've got about 6 hours of breakin on them now. Desktop Dyno puts them at 425 HP and 480 Ft/lbs for torque. Not to bad for SBC's.

Heres a pic of one of them. http://photos.yahoo.com/bc/jeffsnova...r=boat&.view=t

By the way, anybody know how much advance I can run at 10:1 compression? I'm running 31 degrees now, but I think thats alittle conservative.

[ 01-14-2002: Message edited by: jr ]

[ 01-14-2002: Message edited by: jr ]
 
Reply With Quote
Old 01-14-2002, 11:19 AM
  #6
Registered
 
traviss's Avatar
 
Join Date: Oct 2000
Location: On the river
My Boats: 1989 18.5 ft XLT powerplay
Posts: 3,372
Post

we run SWENSON engines LOL!! we build our own.. baja runs a mild 502 around 480 hp , JE pistons, cam motion roller cam, dual plane intake, 850 holley, which is now being changed to a 750 for this year and we are in the process of building a sbc 383 for the powerplay wich hopefully will be aorund 390-400 hp.. srp pistons, eagle forged crank and h beam rods, vortec heads, air gap intake, 750 holley, IMCO exhaust and a crane roller cam with all roller valve train.
traviss is offline  
Reply With Quote
Old 01-14-2002, 11:43 AM
  #7
jr
Guest
 
Posts: n/a
Post

Travis, Tom Z built a 383 with pretty much the same setup, but he used a Comp Cam Extreme Marine cam, sam as me. I think he got around 380 out of his. But I don't think he had a roller valve train. You gotta love small blocks. Simple and easy to build.
 
Reply With Quote
Old 01-14-2002, 12:03 PM
  #8
GOT MERC?
 
Goodfella's Avatar
 
Join Date: Aug 2001
Location: Boynton Beach FL
Posts: 574
Wink

Good Morning Thunderdan!
You really need to get yourself a plane ticket to Miami and check out the Miami International Boat Show. There will be many custom engine builders present to talk to face to face. February 14th-19th.
Goodfella is offline  
Reply With Quote
Old 01-14-2002, 12:07 PM
  #9
Registered
 
traviss's Avatar
 
Join Date: Oct 2000
Location: On the river
My Boats: 1989 18.5 ft XLT powerplay
Posts: 3,372
Post

Quote:
Originally posted by jr:
<STRONG>Travis, Tom Z built a 383 with pretty much the same setup, but he used a Comp Cam Extreme Marine cam, sam as me. I think he got around 380 out of his. But I don't think he had a roller valve train. You gotta love small blocks. Simple and easy to build.</STRONG>

thanks jr.. thats nice to know what kinda power he was getting... I talked to crane and they set me up with a roller marine #109831.. the same cam is sold by GM as #1230846.... its 222/230 dur. .509/.528 lift 112 LSA...
traviss is offline  
Reply With Quote
Old 01-14-2002, 11:34 PM
  #10
Platinum Member
Platinum Member
 
Tinkerer's Avatar
 
Join Date: Jan 2002
Location: ALTO, MI
My Boats: 2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
Posts: 4,144
Post

JR Boy do you need a bigger flame arrester and aftermarket exhaust would help. JUST MY.02
Tinkerer is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
slik22
Wanted
0
03-05-2008 12:30 AM
dreamer
General Boating Discussion
2
04-11-2005 06:32 PM
Maximus
General Boating Discussion
13
02-12-2004 08:59 AM
Cord
General Boating Discussion
10
03-10-2003 02:43 PM



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 04:59 PM.


Copyright 2011 OffShoreOnly. All rights reserved.