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 Post subject: Cam options for 25D heads
PostPosted: Mon Nov 13, 2017 7:39 pm 
First Gear
Joined: Fri Mar 15, 2013 10:47 am
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Location: Portland, OR
So my hybrid build will be coming out soon, and figured I should look at cam options while there's easy access.

What options are there out their for cams? I know EJ20k cams fit, but they aren't too easy to track down. Tomei? Anyone else make them?


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 Post subject: Re: Cam options for 25D heads
PostPosted: Mon Nov 13, 2017 11:26 pm 
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Delta has or had a couple different options for ej25d/20k/20r/any other head in that family.

I've driven a couple cars with stock ej25d cams, and they were quite impressive. Tremendous torque and decent top end.

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 Post subject: Re: Cam options for 25D heads
PostPosted: Wed Nov 15, 2017 5:07 am 
First Gear
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Location: Vancouver, WA/ Spokane, WA
I'm running Kelford 272's in my EJ25D heads. That was the only company I could find at the time that made cams for EJ20K/25D heads. I don't know if they still make them though. I thought I read something that Kelford was going to stop producing them.

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 Post subject: Re: Cam options for 25D heads
PostPosted: Thu Nov 16, 2017 11:16 pm 
First Gear
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Mister Anderson wrote:
I'm running Kelford 272's in my EJ25D heads. That was the only company I could find at the time that made cams for EJ20K/25D heads. I don't know if they still make them though. I thought I read something that Kelford was going to stop producing them.


How long ago was that? Their site has nothing listed.

I'm thinking my best bet is to just source some 20k cams at this point.


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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 3:41 am 
Second Gear
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Tomei, JUN, Roger Clark Motorsports, TechWorks, and Kelford have or had offered off the shelf Cam's for the JDM ver.4 STi ej20k/USDM ej25d.

Or alternatively, Delta Cam's, Web Cam's, and Kelford offer regrinding services.

Finding OEM JDM ej20k Cam's is a great option, one of, if not the hottest cam that came in a production Subaru, though they very difficult to find.

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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 3:57 am 
First Gear
Joined: Fri Mar 15, 2013 10:47 am
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Location: Portland, OR
dankberries wrote:
Tomei, JUN, Roger Clark Motorsports, TechWorks, and Kelford have or had offered off the shelf Cam's for the JDM ver.4 STi ej20k/USDM ej25d.

Or alternatively, Delta Cam's, Web Cam's, and Kelford offer regrinding services.

Finding OEM JDM ej20k Cam's is a great option, one of, if not the hottest cam that came in a production Subaru, though they very difficult to find.


My mechanic suggest Tomei, as he thought they made them for the 20k, but I don't see it listed on their site anymore. Looks like Kelford is the same, but it looks like they are still available as a regrind from Web.

JUN, RCM, and TechWorks, i'll have to look into. This is exactly the info I was looking for that is harder to come by these days.


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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 6:49 am 
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Unless you have a hard on for aftermarket, Ej20R cams are the same as ej20k.

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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 6:51 am 
First Gear
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Location: Portland, OR
mike-tracy wrote:
Unless you have a hard on for aftermarket, Ej20R cams are the same as ej20k.


Not that I don't believe you but do you have any info to back that up? I know the 25D heads are very similar if not the same as 20R heads so I wouldn't be surprised.


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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 7:40 am 
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Same cam part numbers as STI, though it got the wrx valvetrain.
https://forums.nasioc.com/forums/showth ... ?t=2168230

Marnix breaks it down with specs:
https://forums.nasioc.com/forums/showpo ... ostcount=5


Translation of a translation, but offers general specs:
https://web.archive.org/web/20141207170 ... t/ej2o.htm

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 Post subject: Re: Cam options for 25D heads
PostPosted: Fri Nov 17, 2017 7:50 am 
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I'd wager you could find ej20r heads for cheaper than just ej20k sti cams. If you could find anyone willing to sell ;)

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 Post subject: Re: Cam options for 25D heads
PostPosted: Sat Nov 18, 2017 2:17 am 
First Gear
Joined: Mon Feb 20, 2012 5:44 pm
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Location: Salt Lake City, UT
This is good info! I am thinking 25D or 20G heads are in my future. I can find 25D heads all the time at the junkyard so if I can just get the cams reground by WEB that would be pretty cool. Also good to know the stock 25D cams are pretty impressive.

I've read through some 25D conversion threads but if anyone knows of a super complete thread I'd love a link or two.

Are the 96 25D heads what I should be looking for?

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 Post subject: Re: Cam options for 25D heads
PostPosted: Sat Nov 18, 2017 3:22 am 
Second Gear
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monkeyposeur wrote:

I've read through some 25D conversion threads but if anyone knows of a super complete thread I'd love a link or two.

Are the 96 25D heads what I should be looking for?



This is the most comprehensive thread you will find in regards to phase 1 DOHC info on this forum,
most other info is scattered from thread to thread. DOHC thread

Have a complete read through that thread if you have not so far.
The 96' heads are different in multiple ways from the 97-98' ultimately it boils down to the preference you want, but you will want to be clear on the differences of the heads and what they yield paired with your short block.

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89 Nissan 240sx sr20
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Dank is actually German for "silly term which the kids have come up with to describe exceptionally choice marijuana.''


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 Post subject: Re: Cam options for 25D heads
PostPosted: Sat Nov 18, 2017 3:41 am 
First Gear
Joined: Fri Mar 15, 2013 10:47 am
Posts: 125
Location: Portland, OR
dankberries wrote:
monkeyposeur wrote:

I've read through some 25D conversion threads but if anyone knows of a super complete thread I'd love a link or two.

Are the 96 25D heads what I should be looking for?



This is the most comprehensive thread you will find in regards to phase 1 DOHC info on this forum,
most other info is scattered from thread to thread. DOHC thread

Have a complete read through that thread if you have not so far.
The 96' heads are different in multiple ways from the 97-98' ultimately it boils down to the preference you want, but you will want to be clear on the differences of the heads and what they yield paired with your short block.


Oh man, i got some reading to do. Don't know how I never saw that thread...amazing that the photo links aren't broken. I should probably get in the habit of downloading stuff like this in case it ever dies.


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 Post subject: Re: Cam options for 25D heads
PostPosted: Sat Nov 18, 2017 5:03 am 
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A company called Cat Cams has some. I’ve been looking at their Rally profile for years.
http://www.catcams.com/engines/camshaft-setup.aspx#

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 Post subject: Re: Cam options for 25D heads
PostPosted: Mon Nov 20, 2017 3:35 am 
First Gear
Joined: Sun Aug 28, 2011 7:20 pm
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Location: Vancouver, WA/ Spokane, WA
BiNiaRiS wrote:
Mister Anderson wrote:
I'm running Kelford 272's in my EJ25D heads. That was the only company I could find at the time that made cams for EJ20K/25D heads. I don't know if they still make them though. I thought I read something that Kelford was going to stop producing them.


How long ago was that? Their site has nothing listed.

I'm thinking my best bet is to just source some 20k cams at this point.


I think that was back in 2013. At that time they had to be made by order, so it took a couple of months to get them. Another thing to note is I had to machine the "steps/notches" that are side to side on the bucket/shim bores. The lobes would not clear the existing steps/notches.

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 Post subject: Re: Cam options for 25D heads
PostPosted: Mon Nov 20, 2017 3:39 am 
First Gear
Joined: Fri Mar 15, 2013 10:47 am
Posts: 125
Location: Portland, OR
Mister Anderson wrote:
BiNiaRiS wrote:
Mister Anderson wrote:
I'm running Kelford 272's in my EJ25D heads. That was the only company I could find at the time that made cams for EJ20K/25D heads. I don't know if they still make them though. I thought I read something that Kelford was going to stop producing them.


How long ago was that? Their site has nothing listed.

I'm thinking my best bet is to just source some 20k cams at this point.


I think that was back in 2013. At that time they had to be made by order, so it took a couple of months to get them. Another thing to note is I had to machine the "steps/notches" that are side to side on the bucket/shim bores. The lobes would not clear the existing steps/notches.


Do you think there was a benefit to running the Kelfords over 20k cams?


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 Post subject: Re: Cam options for 25D heads
PostPosted: Mon Nov 20, 2017 5:17 pm 
Second Gear
Joined: Thu Oct 27, 2011 5:09 am
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Location: Dirt Roads, Colorado
BiNiaRiS wrote:

Do you think there was a benefit to running the Kelfords over 20k cams?


Kelford 272 cams will have a bit more lift and duration than ej20k Cam's. You can't really say there is a benefit of one over the other, they both are in a different category of performance, ultimately that's a personal preference to suit your build.

The 20k Cam's do not require machining, but anything with more lift than that profile is likely to need some material taken out for clearance.

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93 legacy ss Tarmac Terminator
89 Nissan 240sx sr20
90 Nissan 240sx 2jz
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