merc pistons

**wzguy** · 08-02-2015, 08:31 AM

getting ready to purchase pistons for 2.5 carb motor what is a good fordged choice. thanks leo

**Slimm** · 08-02-2015, 08:54 AM

subscribed

Slimm

**TEXAS20225** · 08-02-2015, 09:00 AM

2.5 carbed mota as in 245 nic sleeve

**wzguy** · 08-02-2015, 11:07 AM

no it will have to be bored. looking for best bang for buck thanks leo

**wzguy** · 08-02-2015, 11:09 AM

motor will be spun to 7500 on short burst . its on a 17 ft. action

**TEXAS20225** · 08-02-2015, 02:07 PM

i would not do any forged pistons myself i would do vertex or wsm thin ring , 7500 is well within there capacity and so much more affordable

**TEXAS20225** · 08-02-2015, 02:10 PM

plus only forged oversize i know of are wizards get out the second mortage

**eli** · 08-03-2015, 01:05 PM

contact john marles us1 ask him .

**outasite** · 08-03-2015, 02:55 PM

X2 on the vertex! 7500= cast every time. That is the best bang $.I ran one set of WSN with no problems as well.You can get a new set of wisecos top pinned by Marles, or mortgage the farm and go Wizards.

**wzguy** · 08-05-2015, 06:50 PM

thanks for the input. does anyone use wisecos or is there a problem with them. thanks leo

**outasite** · 08-05-2015, 07:25 PM

Originally Posted by wzguy

thanks for the input. does anyone use wisecos or is there a problem with them. thanks leo

Used to be a lot of problems.Then people figured out they need more clearance,and wiseco changed the recipe a little,and started making a better outboard piston.I have heard the new ones are ok,I have a new set that I had Marles top pin,but have not run them yet.Time will tell!

**Go Time** · 08-06-2015, 06:32 AM

I like the WSM pistons...they are cast, but with a high strength alloy (developed by NASA) and made in Germany and very high quality. They make oversized pistons for promaxes (with 1.5mm rings) and 300X motors that no one else does. Never had one fail or a pin come out. They are a little more $ than the vertex...which I have also used and are good as well.

**ChrisCarsonMarine** · 08-06-2015, 07:09 AM

Originally Posted by Go Time

I like the WSM pistons...they are cast, but with a high strength alloy (developed by NASA) and made in Germany and very high quality. They make oversized pistons for promaxes (with 1.5mm rings) and 300X motors that no one else does. Never had one fail or a pin come out. They are a little more $ than the vertex...which I have also used and are good as well.

We have used several hundred WSM's...Very happy with them,we are a dealer,Chris

**wzguy** · 08-12-2015, 02:35 PM

thanks guys leo

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