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Old 10-01-2012, 04:51 PM   #451
FuJi K
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Quote:
Originally Posted by Dr. octagon

So i assume that double d port is not an issue on ej205 head correct? Thinking 2.1l more and more

Also, do you have any idea on price (general/rough idea) to convert to shimmles buckets?
I can apply the Double D port to the 2L heads. Shimless buckets are all that's needed. $300ish
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Old 10-01-2012, 09:41 PM   #452
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Quote:
Originally Posted by FuJi K View Post
I can apply the Double D port to the 2L heads. Shimless buckets are all that's needed. $300ish

excited already and i dont even have the cash yet
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Old 10-06-2012, 02:08 PM   #453
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Quote:
Originally Posted by Dr. octagon

excited already and i dont even have the cash yet
Here is the JDM-like work done to a WRX 2L head. DD shape applied.



Here is the exhaust. Clean up around the valve guides, smoothed out short turn and splitter work. Valve job soon to come.
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Old 10-09-2012, 08:43 AM   #454
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Very nice, thank you for the visual on the 2.0l heads
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Old 10-30-2012, 11:00 AM   #455
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Coming to Cali!!! JDM size with +1mm valves. Intake Valve guides where pushed down while porting and pushed back to position after.



Last edited by FuJi K; 10-30-2012 at 11:21 AM.
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Old 10-30-2012, 12:21 PM   #456
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Very nice Fuji!! What grit are you finishing with?
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Old 10-30-2012, 11:04 PM   #457
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Quote:
Originally Posted by manitou
Very nice Fuji!! What grit are you finishing with?
Finished the exhaust with a worn out 240 grit. Could go more but it all gets covered in carbon at the end of the day. Intake Ports are bit finish.
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Old 10-30-2012, 11:47 PM   #458
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Very very nice! You look to be getting them dialed. Have you flow tested any of your latest ones? Thanks!
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Old 10-31-2012, 12:41 PM   #459
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Quote:
Originally Posted by manitou
Very very nice! You look to be getting them dialed. Have you flow tested any of your latest ones? Thanks!
Thanks for the kind words! I like it that I can port all the current '02+ heads the same style.

I have not flowed the heads since the last flow numbers posted in the thread. Flow numbers vary slightly head to head depending on the valve job done and valve size. My flow numbers from the start was all on stock valves using the stock cams to open the valves. There was actually one head that was flowed with +1mm valves and porting work. The link can be found in the first post. I don't think we actually came close to getting the full .400" lift but as far running stock cams, that's how much more gains you have. You can expect more flow with performance cams.
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Old 10-31-2012, 04:11 PM   #460
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Cool, thanks for the reply! I'll go back and check those values.

I just got my heads back from the machine shop (Detroit area) and the motor is going together now. I'm using my D25 heads with with cnc PnP dogleg straighten and mild hand work, bowl blend, +1mm valves and Kelford r199b cams. They look good but are definitely not the DD style like your doing.

I should have the flow data from them this week. We'll see what values I get. Putting them on a MPS long rod 2.5 block so the CR will be fairly high +9.2/1.
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Old 11-01-2012, 01:05 AM   #461
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Here is the valve seat blending. If you wanted to blend the stock seats, you can make it almost a radius.

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Old 11-01-2012, 10:45 AM   #462
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But if you are using +1 valves you should open the throat up with a 75* bowl hog cutter to 85-90% of the valve size. You could grind it, but its much faster and accurate with a cutter.
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Old 11-16-2012, 02:08 PM   #463
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I'm about to start a ej20 set to go onto a ej257 build. I will be relieving the chambers as per previous posts here. Hats off to you FujiK. I've done an old practice set and let me tell you all it is not easy to get the shape around the edges of the valves right. One slip with the die grinder and perfection is lost.
I want to remove all sharp edges from the chambers to help with det while I'm about it. I have a question about the sharp edge along the quench pads. If you have a look at TK's photos on page 7 of this thread you can see what has been done there to blend them out.....but I have some concerns about removing that amount of quench pad area and what effect that might have. Can anyone provide any usefull information regarding this concept?
The 257 heads look to have a little more clearance between the valve and the quench pad but I don't have one here I can measure. I was wondering if some body might be able to measure the distance across the head from pad to pad on a 25 head and post it up so I can get an idea on relative areas Subaru has used between the motors.
What is the purpose of the raised pad around the spark plug. Is that designed for strength, or does it play an important role in how the spark is distributed in the chamber?

Last edited by ripman; 11-16-2012 at 02:46 PM.
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Old 11-16-2012, 05:24 PM   #464
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The distance from pad to pad are around 75mm on the D25/S20 heads and about 76mm on the B25 because it's a little rounder at the edges. If you want to make use of the pads you need a matching piston.

Something like this
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Old 11-18-2012, 12:54 AM   #465
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Thanks Fuji. What brand piston in the photo?
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Old 11-18-2012, 09:25 AM   #466
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Quote:
Originally Posted by ripman
Thanks Fuji. What brand piston in the photo?
That was a custom CP piston i had made.
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Old 11-18-2012, 10:53 AM   #467
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Fuji, is that an Outfront closed deck block and if so have you been running the same block for a while?
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Old 11-18-2012, 10:57 AM   #468
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Quote:
Originally Posted by manitou View Post
Fuji, is that an Outfront closed deck block and if so have you been running the same block for a while?
It's an ej22t that he had the rear thrust bearing converted to accept the newer style crank.
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Old 11-18-2012, 11:27 AM   #469
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Quote:
Originally Posted by manitou
Fuji, is that an Outfront closed deck block and if so have you been running the same block for a while?
Quote:
Originally Posted by 04ImprezaWRX

It's an ej22t that he had the rear thrust bearing converted to accept the newer style crank.
Correct! Just my EJ22T block. It's been running on and off since i change the bolt on setup on it every year to test certain things. It wasn't running this last summer because pistons where made wrong without my authorization on changing the specs.

I will try to get it running forsure this coming year '13 with a 79mm stroke, new custom Wiseco pistons and my custom Puater rods. Once we decide on a right turbo, i can select my cams to go with it. We'll likely be running my ported heads if not doing a back to back test with a stock pair that i have.




Custom on the bottom


Run stock head first then ported or run ported first then stock to coke it?
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Old 11-23-2012, 10:43 PM   #470
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Here is my same bottle cap in a '98 EJ25D intake port.


Here is the bottle cap in an EG33 intake port. A little bigger than what i bring my Double D size out to.
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Old 11-24-2012, 03:17 AM   #471
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Now this looks like it could be fun.
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Old 12-30-2012, 07:30 PM   #472
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Here are the differences in the rough single cut bit vs the smoother double cut.

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Old 12-30-2012, 10:36 PM   #473
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Here are the caps stuffed into a gutted TGV, then into the port runners.



Last edited by FuJi K; 12-31-2012 at 08:35 AM.
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Old 12-31-2012, 08:51 PM   #474
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.......

Last edited by MSR; 12-31-2012 at 09:12 PM.
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Old 12-31-2012, 10:28 PM   #475
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have any pics of the 2 bits?
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