Vertex or Wiseco?

[Bullet89]

What do you guys prefer and why?

[FMP]

Wiseco, lighter stronger faster. Coated

[davemvegas]

siezeco is good if you run them loose and put some break in time on them. vertex has a better reputation from what i have read in the forums.

[Bullet89]

Actually the Vertex is lighter. 473 grams

[FMP]

Can't say for all application, I save near 1/4lb reciprocating weight plus crowns are coated. Yes break in is slow and deliberate.

[Bullet89]

Where are you saving weight?

[FMP]

Total piston weight, which is part of the reciprocating weight.Recip being piston, pin, clips, rings, rollers, and small end of the rod.
Where did you save over a pound? In may case Wiseco is significantly lighter than Vertex.

[ChrisCarsonMarine]

Wsm has been good for us,Chris

[Bullet89]

I have a Vertex and Wiseco piston, complete with wrist pin and rings and the Vertex is much lighter. I have never used the Wsm, Chris. What do you like about them?

[Bullet89]

What motor are you building, FMP?

[racer]

A lot depends on the engine, power level and rpm.

[Bullet89]

The reason I am asking is I have always used Vertex and they are on back order at Pro Marine. I was building a motor the other day (225pm) and noticed a big difference between them. I looked on ProMarine website and the Wiseco is advertised at 1.6 lbs and Vertex at 1.5 lbs.

[tux974]

What motor are you building, FMP?

Good and important question!

A lot depends on the engine, power level and rpm.

This will tell all for me!

For a stock 225PM or around 7000ish+/- the Vertex is an excellent choice. Been using them in plenty 225PM motors will exceptional results.
Even the ProV is a good piston. For me a steel bore motor get cast pistons.
I have never tried the WSM that Chris mentioned, just may try a set in the near future. I think the one advantage is the 1.5 rings.

[mrcrsr]

i just put a set of wsm's in a 3 litre, they seem like a decent piston. never had good luck with the wiseco's(at least in the mercurys), thanks for the tip chris, the wsm seems like a nice piston. vertex are great when you can get them, pro stopped carrying them for 3 litre mercury applications. i personally would run a wsm if the vertex weren't available.

[Go Time]

For a PM, WSM is the best choice. Top quality cast piston coated and comes with 1.5MM rings like the factory...Vertex are good but use the 2 mm ring. I have several PM w/ WSM pistons and they run great and never had one problem. WSM also offer oversized pistons for the PM with 1.5mm rings.