225 Mariner new block, composite reeds exhaust tuner

[Wendy lou]

Talked with my mechanic

he is getting me a remanufactured clock assembly
new sleeves, crank, rods, pistons everything

I am looking at having him install Carson composite reeds

to help acceleration on bottom and mid range

also putting a Bob’s exhaust tuner on it to help it breathe a little better

any experienced with these?

[Gamblinman]

I doubt either will provide much in performance gains. Reeds will save the powerhead should it ingest one. 3.0 liters have a good tuner already and the aftermarket ones are loud. Until you do some serious modifications to the powerhead, I would stick with the stock tuner

What year 3.0 do you have?

[Wendy lou]

1997 EFI 225 Mariner

[cajunrgfm]

needs a 4 hole front,and tighter heads,before it will show any gains,if ya' know anybody that can grind and flow blocks,the tuner can easily have a ton of slag,and piss poor casting lines, ground out of it,and flowed better. or just get a stock 250/300pm tuner,and grind away.

1997 EFI 225 Mariner

[lpugh]

needs a 4 hole front,and tighter heads,before it will show any gains,if ya' know anybody that can grind and flow blocks,the tuner can easily have a ton of slag,and piss poor casting lines, ground out of it,and flowed better. or just get a stock 250/300pm tuner,and grind away.

I will second that

[EuropeanAM]

Please see the Forum Announcements, and be sure to update your thread with the Required info. Thanks!

[lpugh]

Talked with my mechanic

he is getting me a remanufactured clock assembly
new sleeves, crank, rods, pistons everything

I am looking at having him install Carson composite reeds

to help acceleration on bottom and mid range

also putting a Bob’s exhaust tuner on it to help it breathe a little better

any experienced with these?

If this is your only concern, get higher compression heads. By far the best bang for the buck. Increased compression and/or reprograming will require 91 octane fuel
klrbee has a lot of good info that would apply in your case
Contact Eric Simonson about reprograming.

Simon Perfomance Technology
1900 Joe Crosson Dr.
El Cajon CA 92020
760-440-9334
Exhaust and intake change may actually hurt the bottom end torque
In all case the boat setup should be done first, there a lot of good info on this site that can help you