Category: Drivetrain
Price: $0
Private or Vendor Listing: Private Listing
Part Fits (you may select multiples): Series I
Location (US State/Canada/Int): AZ
Item Condition: New

Looking for new or briefly used ACT counterweight. PM me if you have one.

 

Its just a rebranded Mazda OE part, all the RX8 counterweights are the same thing so no need to specify ACT

I posted the info in the other WTB counterweight thread

 

rofl, ACT said their CW is better balanced. cuz omg it was originally balanced for 4AT front counter weight not the 6MT.

for me, I don't give a ****, factory balancing was never perfect to begin with and I use stock counter weight in my NYC 8 without 1 bit of an issue.

I do have a ACT CW though, got it for less than 100 bux couple yrs ago. but I need it for my 2nd RX8 soon I think.

 

The front counterweights are all the same part.

 

https://www.rx8club.com/rx-8-parts-s...9/#post4520903

The only way for it to be better balanced is to have the entire rotating system balanced. Otherwise they are just guessing.

Poor balance from the factory is one of the leading causes of poor Renesis engine life, excessive bearing wear, etc. supposedly they did better on the S2 engines, but still not anywhere near what a pro engine builder will provide.

 

OS geinkin, and the lot in japan say to use the stock auto one for all the rotaries. They have them on ebay that will fit the ACT for 120 bucks, I know I just bought one.

 

Call Mazmart or a junk yard and get one off automatic that is being parted out.

 

I kept reading that the front automatic counterweight was different and the rear needed to be different too for 6speed use. Finally looked at the parts and they're the same... I'll just buy one from mazdaspeed motorsports it's only like 110 from them IIRC.

 

Well duh ...