Technical Discussion [Archive] - Page 147 - Scream And Fly Powerboat and High Performance Powerboating Discussion Forums

225X overheating @ 2500 (12 replies)
235 crossflow (12 replies)
200 carb w/ an Optimax Cowling (0 replies)
Paralift Problem, NEED HELP PLEASE!!! (13 replies)
Mirage tunnel hull questions (1 replies)
Inline 6 dies above 2000 rpm (7 replies)
96 2.5 EFI looses hp (1 replies)
NOSE CONE BONDING/fixing questions (3 replies)
land and sea OMC reed question (5 replies)
WOW I got my boat runnin so fast..... (17 replies)
98 Pro Max 225 (2 replies)
low egt temp (19 replies)
compression question (2 replies)
Mercury 225 EFI Not same as 250 EFI (3.0L) (7 replies)
260 stumble --> cure (5 replies)
merc carb ? (0 replies)
260 block (5 replies)
2.5 guestion (5 replies)
Now What??? (4 replies)
RPM Readings: Tach vs Smartcraft Monitor (0 replies)
Tps (18 replies)
Timing and Jetting question?? (15 replies)
Hood pin rubbing and rattling (9 replies)
Solved the overheating problem.....lesson to be learned (8 replies)
carb question (4 replies)
XR2 problems continue (14 replies)
Help! removing seastar steering support bracket(Pics) (33 replies)
Jiack Plate (5 replies)
Coil Pack Leads (5 replies)
merc block question (3 replies)
compression....how bad are these numbers? (22 replies)
water/exhaust leak? (2 replies)
idle stablizer (7 replies)
Gumout, does it work?? (5 replies)
280 Piston Scuffing (30 replies)
245 2.5 carb motor questions (2 replies)
I need your help making 1 good PH out of 3 (15 replies)
Omc? (3 replies)
97 225ProMax looses power? (17 replies)
Jack plate or not (12 replies)
1997 Johnson venom model j225steud back fire (3 replies)
Update: Connecting Rod Information on all 280 Long Blocks, ROS and Consumer (1 replies)
cutting a offshore mid???? (10 replies)
Lower fluid leaking (5 replies)
wmh carb rebuild kit...is there such a thing?? (3 replies)
I could use some help on prop selection (4 replies)
Needed: general prop info and clipart! (9 replies)
88 Eliminator Tunnel with tired Johnson 225 (17 replies)
Another Steering Question (3 replies)
Need a new Mercury Sportjet 175 replacement powerhead (2 replies)
Question On Props And Pitch (4 replies)
Engine hot for 10secs? (2 replies)
questions about merc 150 xr4 (6 replies)
New toy; what is it? year and model... (5 replies)
Evinrude V4 compression (6 replies)
4 Butterfly intake / 250EFI question (0 replies)
Pros and Cons in the choise of Nosecone brand? OMC V8 on deep V hull (2 replies)
surge problem (1 replies)
Yamaha Vmax 200ish plugs/jetting (2 replies)
225 EFI Lighter Flywheel (6 replies)
Low pressure fuel gauge (21 replies)
sportsmaster (6 replies)
Promax 225 hard start when cold? (4 replies)
Fuel Pump question (11 replies)
Frozen lower unit fill screw (10 replies)
Teflon tape for water pressure gauge? (5 replies)
Why HP but no TQ? (15 replies)
300 Promax Lacking HP (12 replies)
No water pressure on Merc XR2 (16 replies)
1977 Evinrude 200 crossflow:cracks in exaustports? (3 replies)
Simon 3 liter intake (10 replies)
omc v8 mods (0 replies)
What is a 2.4L drop on worth these days? (2 replies)
Prop selection 200 Merc (9 replies)
omc v6 stator question. (0 replies)
evinrude 250 V8 (0 replies)
Mirage goes bounce bounce (9 replies)
prop shaft seal part number needed (2 replies)
old 2.4 225..... help... help (8 replies)
crossflow to looper powerhead swap (2 replies)
Skater hop (17 replies)
What could be causing this? (9 replies)
Merc 3.0 liter mods (3 replies)
prop numbers (1 replies)
OMC gurus - can power packs limit RPM when they start to go away? (23 replies)
Peak performance in a tunnel? (10 replies)
2.5 tester (1 replies)
egt and rpm/ modded 2.5 200 (8 replies)
1996 Mercury 225 EFI at W.O.T. (7 replies)
Fuel pump question (4 replies)
Cutting Heads To Increase Hp (13 replies)
Carb Teck 101 needed (8 replies)
Hopping Up My 2.4 (14 replies)
head info (2 replies)
HELP 18ft baja+225 looper+14.5x24P raker = 54mph? (16 replies)
Balanced Motor? (10 replies)
1998 MErCruiser Alpha One Using Oil (22 replies)
Who is the best motor builder in or near Alabama (5 replies)
Reliability Of Staked Piston Ring Keeper Pins ? (2 replies)
optimax or pro xs? (6 replies)
Re hubbing a 4 blade Merc? (0 replies)
Block stud pulled out (2 replies)
optimax mods? (8 replies)
cubic inches? (1 replies)
Looking for more power out of a 150 hp OMC (14 replies)
04 Seadoo GTX SC will not start (11 replies)
97 225PM shut down? (9 replies)
Pennzoil XLF? (1 replies)
Lower unit Water Scoops - Dumb Question (8 replies)
115 inline 6, Trash or repair? (9 replies)
Plugs for 1964 6cly Merc 850 (4 replies)
50 yamaha won't get past idle (2 replies)
Cowl mod on a 150XR6??? Will it work? (3 replies)
what merc is this... (25 replies)
rev limiter on 225 efi merc (2 replies)
2.4 200 carb engine bogging issue (5 replies)
bridgeport only turning 6000 rpm's (3 replies)
how do i tell what powerhead i have (6 replies)
1998 2.5 260 EFI Trim Sender and Gauge? (2 replies)
promax 300 lazy seems like it should have more (2 replies)
24 Superboat Jetdrive Or Convert? (0 replies)
Steering (2 replies)
Best epoxy? (12 replies)
1995 Johnson 115 HP erratic tach? (0 replies)
What is this? Mod VP?? (15 replies)
Funny noise (7 replies)
Would you use this crank (5 replies)
Boat turns to the right (2 replies)
Marine Crankshaft Has Moved (5 replies)
Fast bottom (7 replies)
wiseco pistons ?? anyone (8 replies)
Bondo on gearcases? (20 replies)
Haunted Trim Ram? (17 replies)
? on 94 efi mercury outboard (4 replies)
Re-Side Pinning? (30 replies)
OMC Crossflow Overheat (17 replies)
when removing VRO do i need to jet up my 225 looper? (6 replies)
Gearing question. 1:73's vs. 1:87's (13 replies)
Plug help (4 replies)
Is there a S.L.O.W. system on an 87 OMC (11 replies)
building a 2.4 (2 replies)
Bridge port sleeving (6 replies)
How Big? (3 replies)
Prop Help (19 replies)
power packs (3 replies)
Promax 225x overheats (17 replies)
Non Gps Speedo's????? (11 replies)
1997 225 3.0 (2 replies)
2.5L powerhead on 150 mid? (6 replies)
3.0 225 compression (2 replies)
Sea Star Pro Fittings - Where can I buy? (10 replies)
86 merc timing (2 replies)
ECU Question - Mercury 1996 200 EFI (0 replies)
slow tilt (5 replies)
starter spinning (9 replies)
need help wiring trim. (going from in the boat pump to on the motor) (4 replies)
Carb cleaner (24 replies)
OMC 3Cyl Electronics? (3 replies)
225 and 250 3 litre-what's different???? (8 replies)
Any thoughts on a cracked piston? (7 replies)
98 Merc 115 Elpto...is it inherently slow???? (4 replies)
96 200 venom carb question (66 replies)
3 liter 300x sporty prob/? (6 replies)
Jackplate sizes? (1 replies)
Filling crankcase volume with epoxy (15 replies)
Best Oil (8 replies)
Evinrude 200 1977, small cracks in block near exhaust ports. (1 replies)
2.5L cooling question (12 replies)
260 not charging!! (12 replies)
Failed Leakdown. Now What (10 replies)
mad efi (1 replies)
part number veification (1 replies)
excess oil (10 replies)
Thx Texas225 (1 replies)
Inline 6 washed plug (1 replies)
2.0,2.4,2.5?? (1 replies)
HELP!!! Yamaha EFI problems (8 replies)
2.5 EFI Help? (5 replies)
rigging hose adapter part number (0 replies)
Changing BP front half (0 replies)
motor mounts (2 replies)
VRO question (5 replies)
Mercury software ??/testing ecu?? (1 replies)
problem restarting (6 replies)
cherry red 2.4 (15 replies)
150 Crossflow (Help Please) (2 replies)
225x promax #6 piston melting? (1 replies)
Driveshafts CLE v Sportsmaster (10 replies)
water pressure gauge on 96 Mariner 150 (3 replies)
bullet cut, bama cut, etc...eduucate me (3 replies)
How to make a 2.4 BAD! (6 replies)
mad efi (18 replies)
help needed from OMC guru's please (4 replies)
The rooster tail (13 replies)
Looper Rectifers (1 replies)
repair shop (0 replies)
200 X-flow??? (29 replies)
Sixpack carbs (12 replies)
E85 fuel in 2 cycles? (23 replies)
250XS v 225XS v 2.5XS (1 replies)
2.5 Merc (4 replies)
Merc 2 piece head gaskets. (2 replies)
timming Venom-LE (1 replies)
150 HP carbs (4 replies)
Prop Question (4 replies)
water pressure (13 replies)
Finally have the water pumping and bugs worked out, Thanks ALL!!! (0 replies)
65 Merc 90 won't rev (2 replies)
115hp V-4 OMC JOHSON, Want more power (48 replies)
converting to EFI.... (2 replies)
prop questions (6 replies)
Jetting Question for T-REX (2 replies)
merc trim pump (0 replies)
200 venom??? (7 replies)
1994 90hp X-flow (18 replies)
How much hp can i get from a Nissan 50 3 holer (6 replies)
Worried after pulling heads 3.0L OMC (9 replies)
GT40 inboard (0 replies)
Got thru chine walk...now what? (7 replies)
Switch box? (1 replies)
Carb problem? (3 replies)
TRIM how high can i go?? (7 replies)
help mariner 40 hp (1 replies)
HOW to - jack plate height/engine height (4 replies)
want help with max speed (2 replies)
260 rich@ starting warm (17 replies)
mercury 200 1986 water flow (2 replies)
3.0 merc alternator help. (7 replies)
88 200xp 3.0 engine weight? (2 replies)
psi for a 225x? please help? (13 replies)
fat propshaft ? (6 replies)
Optimax sensor test (1 replies)
No Fuel Pressure ? 1995 EFI Fishin Motor (2 replies)
Merc 2.5 Powerhead on a 2.0 (5 replies)
Motor decisions 2.4, 2.5 efi? (3 replies)
What’s Normal Temperature On a 2.5/260 EFI? (25 replies)
tell me more about these engines... (11 replies)
information evinrude 250 V8 1991/94 (3 replies)
crossflow cyl head racing questions (1 replies)
to fix or OK to leave as is (3 replies)
Need info on broken skeg (12 replies)
Merc 175 EFI wont idle...? Just dies... (0 replies)
Peak power on the 2000 Off Shore 280 (37 replies)
2.5 merc carb ? (0 replies)
225 PM Compression Numbers? (5 replies)
Tach Question (4 replies)
73 rude 115 little pee???? (12 replies)
'99 150 Optimax Problem (3 replies)
fuel pump question (9 replies)
Siezed Etec 200 (25 replies)