so i bought a set of eagle rods and a set of nippond racing jdm b16b pistons for my jdm b16a wich are just stock replacement pistons but were the rods and pistons go together the eagle rods wont fit in the piston but my stock pr3s will? when using eagle rods do you have to get special pistons?

 

Don't know why there is a fitment issue. I know of other applications where only eagle rods have been used. There are many builds where eagle rods have fit other pistons. i.e. alot of people like the eagle rod/JE piston combo or eagle rods/SRP pistons. Maybe just some bad luck, or you received incorrect parts either on the rod or piston end.

 

im not totally sure whats going on but it is weird. i ran the part number on eagle rods.com and it came up with b16a rods but they dont fit my pistons but pr4 rods fit them fine

 

cause b16 and ls have a narrower small end of the rod. your pistons probably aren't even machined to accept c clips either.

 

ya i know their not made to take c clips but the ls rods fit the pistons but my eagles wont fit them at all and they are b16 pistons

 

thats cause aftermarket rods have wider small ends. nippon does make aftermarket cast pistons that are made for aftermarket rods.

 

alright well i am holding a set of pr3s and pr4s rite now and the small end is the same width and their 20mm wide and the eagles are 23mm wide. but that answered my question that aftermarkets are wider thanks. i didnt plan on putting these pistons in this motor just the guy wanted 100$ for the eagles so i had to buy them