Greddy sells 2 catch cans a 15mm and a 9mm, do I need the bigger one? Advantages/disadvantages to each?
Catch can size?
- Thread starter 7Mboost
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I think the 15mm has a 15mm hose barb, and the 9mm has a 9mm. Since the stock size tubing off the PVC hookups are 3/8", I think the 9mm would be the one you'd want 
Fitting size depends on the motor's condition and amount of blowby.
My stock motor used to breathe pretty heaving on the Dyno and used to blow the dipstick out so a quick fix was bigger hoses from the Cam covers to the CC and then to the Vacc source.
My stock motor used to breathe pretty heaving on the Dyno and used to blow the dipstick out so a quick fix was bigger hoses from the Cam covers to the CC and then to the Vacc source.
No, they are the same.high psi 1jz said:
Note: Greddy offers two sizes of cans, one medium & also a very large model that wouldn't fit in most engine bays. The problem with both cans is that they are not baffled in any way, so the input has nearly a direct shot to the output that does not allow full efficacy of the vapor condensation effort to be realized.
I bought the very large Greddy can then loped the bottom off, welded a P-III Slot-One alum heat sink inside the can between the in/out. This created a near twin chamber- a flow-disturbing finned barrier with large surface area maximizing condensation & fluid collection in the can instead of the intake. The can was shortened to just shy of heat sink height, & it's new demure size facilitated install on the cold side of the bay.