A light piston doesn't hurt
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A light piston doesn't hurt
The stock rod bolts r made to stretch when torqued. So if u reuse a stretched bolt it dosent have the tensile? strength left and will fail and send rod thru motor. When rebuilding pay close close attention to rod caps and torquing NEW rod bolts as per manual. I can get u A pic of a stretched bolt and a good boltQuote:
Originally Posted by Flabenk69
Hiii guys this is the results of rebuild motorAttachment 440043 new paint new decals
WHO CAN SAY ME THE RIGHT FUEL PUMP for race carb 2.0 outboard ????????
red Holley 2 amp 97 gph 7 psi ( 367 lph at free flow) not require fuel pressure regulator
Attachment 440060
blue holley 3 amp 110 gph 14psi ( 416 lph at free flow) require fuel pressure regulator
Attachment 440061
black Holley 4 amp 140 gph 14 psi ( 530 lph at free flow) require fuel pressure regulator
Attachment 440062
This is the Oem replace
Attachment 440063
I have ran a blue and regulated it down. For racing, The best pump to use is a Weldon and have it set to run the lower pressures. You do not want to lean it out.
an alternative to the cheap holley and high $ Weldon
is the Mallory 110 marine,,,,flows plenty for a carb merc,,,and has an adjustable regulator made into it'
gear rotor pump like the Weldon,,,not a slinger pump like the holley
ran them on lots of drag and sst120/140 motors with great results and life
The mallory pump work great but need a prefilter before them.
This is the best forum of the world! Very very good guys!
I want to make a list of right fuel pumps for mercury race 2.0L
-Holley blue 3 amp 110 gph 265$ (pump , regulator, shipping ,duty)
Attachment 440133
-Mallory marine 110 gph 400$ only pump 175$ regulator
Attachment 440135Attachment 440139
-WELDON marine saeJ1171 825$ Only pump 218$ regulator
Attachment 440136Attachment 440138
Very hight price different!
what is the difference of a 2.0 with Mallory set ?Holley set ?Weldon set?
all 3 pumps will flow more fuel than 2.0 merc can use
so if set at 6 lbs should not over power seats
so all 3 will work
Mallory and Weldon are gear rotor pumps so are more precise
holley is a vein slinger,,,,when 1 or more of the 4 veins sticks,,,,less volume,,,,,not a good thing
Mallory has a allen adjuster on bottom of pump can see in pic,,,so no need for the regulator as can lower pressure built in the pump,,,
also the non marine is over 100 cheaper and same pump just not extra coatings on windings and the black paint,,,
if going on a race only motor not a pleasure rider,,,,,,standard pump works well and has good long life,,,
ive raced sst120 for 10 yrs and ran Weldon and Mallory,,,,Mallory was less then 1/2 price and no issues ever
Thank you John!
i bought the 110 gph Mallory 7 psi fuel pump item number 29256 ( 335$ pump, shipping, duty)
Attachment 440193
I don’t have bought the fuel pressure regulator, with this pump I don’t need it at 100%???
The Carter is the best pump for a carburated engine.
yes do not need regulator,,,,'
as stated can adjust allen to 6 lbs and wont overflow the seats and still produces more fuel than need on 2.5
I don’t have bought the fuel pressure regulator, with this pump I don’t need it at 100%???[/QUOTE]
Hi guys the Mallory 110 (416LPH) is arrived and mounted yesterday in the boat Attachment 441996
with factory pressure regulator (7psi ) with this high pressure and flow , the mercury 2.0 liter
not exceed 4500rpm and run very very overflowinng!
I adjusted the pressure by unscrewing the adjustment screw almost to the maximum , the engine was up to 5000 rpm but it still seems very full of gasoline, don't run well !
i think , it’s possible that running with overfloating will ruin the spark plug?????
Part#? 6psiQuote:
Originally Posted by Markus
https://www.jegs.com/i/Carter/180/P4389/10002/-1
You may want to put new needles and seats in the carbs.
agree on above or ur floats are set too high,,,,,,