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Forchs 97 Brighton Build
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Old 10-08-2016, 03:07 PM   #11
Forch72
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Made some more progress this week cleaned and painted the diff, pulled the motor and trans, and ordered some parts for the motor. My original plan of a budget build is to the wind now. I figured there was no point in me doing all this work with the swap and turbo with a high mileage stock motor so I'll be doing timing belt, water pump, thermostat, a lot of the gaskets and the oil separator plate. I have a ton more of parts to order and a lot of work ahead of me but that's what it's all about right?









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Old 10-17-2016, 08:28 PM   #12
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Just got back from vacation to find this sitting on my desk

Gates timing belt, Mishimoto 154* thermostat and OEM water pump with gaskets/bolts


Just need a few more gaskets and the oil separator plate and she should be as good as new.
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Old 10-18-2016, 12:12 PM   #13
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Nice progress. Time to clean that engine bay!
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Old 10-18-2016, 05:35 PM   #14
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Need some options/advice here. As stated I am going to turbo this motor so I realized I ran into a problem with my heads. Since I have the single port exhaust heads I have 3 options.

1. Get new single port header (my stock one is shot) then either buy a Subachad up pipe/down pipe or getting one custom made. Can't see this costing under $600.

2. Buy ej22 heads with the dual exhaust ports and since I already have a WRX subframe I will just need to buy a WRX header/UP/DP

3. Buy 97-98 ej25d heads. With this I will need to also run the WRX subframe, ej25d intake manifold, wiring harness, ECU (I think because I will be going from sohc to dohc), WRX header/UP/DP, and return the timing belt I just got.

I'm leaning towards option 2 since I found heads for cheap but I'm still not sure if they will even work with my motor. Any input or knowledge will be greatly appreciated. I am new to the whole Subaru scene so please bare with me also I will be getting the car tuned after all this.
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Old 10-18-2016, 05:50 PM   #15
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Option #4 - Spend $600 on a welder and some tube and build your own up/down pipe.
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Old 10-18-2016, 06:05 PM   #16
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Quote:
Originally Posted by FryphaX View Post
Option #4 - Spend $600 on a welder and some tube and build your own up/down pipe.
lol If I could weld I would. Option two is going to cost me under $500 plus I have so many more options with headers/UP/DP since I'll be able to use 02-07 WRX. The more I think about it I don't see how I don't go with option 2 unless the heads won't match up for whatever reason.
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Old 10-19-2016, 07:47 PM   #17
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Quote:
Originally Posted by Forch72 View Post
Need some options/advice here. As stated I am going to turbo this motor so I realized I ran into a problem with my heads. Since I have the single port exhaust heads I have 3 options.


3. Buy 97-98 ej25d heads. With this I will need to also run the WRX subframe, ej25d intake manifold, wiring harness, ECU (I think because I will be going from sohc to dohc), WRX header/UP/DP, and return the timing belt I just got.
I'm pretty sure it doesn't matter that you are going from SOHC to DOHC. They have the same number of sensors. You just have to make sure the cam gear on the new head matches the old one or swap it.
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Old 10-19-2016, 08:01 PM   #18
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Quote:
Originally Posted by GeronimoRS View Post
I'm pretty sure it doesn't matter that you are going from SOHC to DOHC. They have the same number of sensors. You just have to make sure the cam gear on the new head matches the old one or swap it.
Even though I'm not going this route currently it's still something I'm going to research further just for future knowledge in case I do decided to do it. I'm hoping these new ej22 heads I'm picking up Saturday with the dual exhaust ports will be a direct swap. If anyone knows please chime in other wise worse case scenario I'll have a set of heads for sale lol
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Old 10-19-2016, 08:10 PM   #19
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Quote:
Originally Posted by GeronimoRS View Post
I'm pretty sure it doesn't matter that you are going from SOHC to DOHC. They have the same number of sensors. You just have to make sure the cam gear on the new head matches the old one or swap it.
Out of curiosity, what are you basing your information off of? I'm not saying you're wrong as I've never explored a DOHC option but I'm having a hard time believing that.

Not to mention that the rate a SOHC cam pulley and a DOHC pulley are rotating at is forsure bound to be different which in theory should change the rate the ECU is expecting the signals. That being said the ecu pins of the DOHC and SOHC are also different I believe. I know the SOHC 01 RS uses a JECS 96 Pin. I'd bet a JDM grill that the 98 DOHC RS doesn't.
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Last edited by FryphaX; 10-19-2016 at 08:31 PM..
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Old 10-20-2016, 05:40 AM   #20
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I have dual port ej22e heads & alot of ej25d stuff around including an entire running engine, PM me if you can use this stuff.

Folks have swapped ej25ds into old ej18/ej22e cars using the sohc wiring - pretty common & easy swap.
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