EZ30R Cam Specs, EZ30D and EJ255 comparison

Posts specific to the 3.0 litre NA H6 engine

EZ30R Cam Specs, EZ30D and EJ255 comparison

Postby EZ_Bloke » Sat Jul 12, 2025 8:12 pm

Recently, I went on a deep dive and measured a set of EZ30R cams and derived real valve motion for the curved buckets. I could not find the results of anyone having done this. They turned out to be pre facelift spec. I had a pair of EZ30D and EJ255 WRX cams with which to compare.
I was very interested to see the comparison to the EZ30D, as that’s what I have swapped into my car. Turns out, they are not that different.

Testing the forum capabilities before making the full post. More to come

Group plot INLET cams.png
Group plot INLET cams.png (62.02 KiB) Viewed 11540 times

Group plot EXHAUST cams.png
Group plot EXHAUST cams.png (51.22 KiB) Viewed 11540 times
EZ_Bloke
 
Posts: 2
Joined: Sat Jul 12, 2025 8:06 pm
Car: EZ30D swapped 1993 Liberty

Re: EZ30R Cam Specs, EZ30D and EJ255 comparison

Postby EZ_Bloke » Wed Jul 16, 2025 4:40 pm

While I was waiting for admin approval, I posted here:
http://www.ultimatesubaru.org/forum/topic/186584-ez30r-avls-cam-specs-deep-dive/

EZ36 specs are there too
EZ_Bloke
 
Posts: 2
Joined: Sat Jul 12, 2025 8:06 pm
Car: EZ30D swapped 1993 Liberty


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