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Old 01-24-2011, 10:17 AM   #1226
i2cou4u2
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The shop that will be tuning the car is telling me that it will pass just fine with the twinscroll setup using just the two o2 sensors in the downpipe and the JDM ECU. My only concern was the visual inspection of the emission control systems on the motor. I dont see a problem with the up pipe not having an EGT in it, since the twinscroll setup is completly covered with factory heat shielding.

Thanks for the input.

Tom
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Old 01-24-2011, 05:12 PM   #1227
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Quote:
Originally Posted by i2cou4u2 View Post
The shop that will be tuning the car is telling me that it will pass just fine with the twinscroll setup using just the two o2 sensors in the downpipe and the JDM ECU. My only concern was the visual inspection of the emission control systems on the motor. I dont see a problem with the up pipe not having an EGT in it, since the twinscroll setup is completly covered with factory heat shielding.

Thanks for the input.

Tom
as long as they see the cat in your downpipe, all the factory shielding and your car throws no cel (usdm ecu), your fine
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Old 01-24-2011, 06:30 PM   #1228
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So I got my v8 STI EJ207 in my car last night. And started piecing together the other bits. Went to bolt on an HKS catted twinscroll downpipe I got for cheap. Turns out that doesn't fit at all with a 5-speed gearbox.

When trying to tighten the DP to the turbo, it lifts the DP up to the point it is jammed hard against the tranny crossmember in the rear. And then cannot tighten the turbo down enough. Will be trying to solve that issue soon...
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Old 01-24-2011, 07:41 PM   #1229
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Has anyone ran a Forced Performance 68HTA turbo on a Version 8 207? I have been kicking around the idea of swapping out the twinscroll setup for a 68HTA turbo. I am thinking of doing this so I don't have to mess with building a custom downpipe or spending a fortune on one either. Also the bigger turbo should help it pull harder to red line.

Thanks

Tom
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Old 01-24-2011, 08:05 PM   #1230
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That would be a horrible idea and a big step back wards man.

C
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Old 01-24-2011, 08:11 PM   #1231
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Originally Posted by MConte05 View Post
So I got my v8 STI EJ207 in my car last night. And started piecing together the other bits. Went to bolt on an HKS catted twinscroll downpipe I got for cheap. Turns out that doesn't fit at all with a 5-speed gearbox.

When trying to tighten the DP to the turbo, it lifts the DP up to the point it is jammed hard against the tranny crossmember in the rear. And then cannot tighten the turbo down enough. Will be trying to solve that issue soon...
Not sure the gear box is the issue, the shape of the downpipe between jdm and usdm is identical as far as bends and the way it sits, so in theory it should fit with both gear boxes.

do you have a link to the downpipe in question? Are you sure the turbo is seated properly with the uppipe or uppipe with header, as an improper angle in those locations can cause your issues.
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Old 01-24-2011, 08:18 PM   #1232
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anybody out there have a 207 out of a s202? or is that like impossible to find lol
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Old 01-24-2011, 08:27 PM   #1233
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Quote:
Originally Posted by i2cou4u2 View Post
I am thinking of doing this so I don't have to mess with building a custom downpipe

Its not that hard or $$ really!!

Trust me try the stock twin-scroll before you research an upgrade, its actually a great DD turbo.

Quick story, when I first did my swap, I logged the car on Shell 93 and can verify you get way too much knock. Through sharing knowledge and making friends on the site, I was given a several AH581 maps made by Clark. (Hey this is a good ad so) I slightly modified one of those to run safe till I was able to complete my mods and go for my final tune. I can vouch that from my real experience that Clark's advices and tunes are dead on when dealing with these ej207's.
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Old 01-24-2011, 09:03 PM   #1234
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Quote:
Originally Posted by Clark Turner View Post
That would be a horrible idea and a big step back wards man.

C
Is the 68HTA turbo a bad turbo? Why do you say it is a huge step back words?

Thanks for all the help and input by the way!!!

Tom
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Old 01-24-2011, 11:28 PM   #1235
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Quote:
Originally Posted by Clark Turner View Post
That would be a horrible idea and a big step back wards man.

C

After thinking about what you have said Clark, I am going to follow your advice. I figure you know what you are talking about seeing how much experience you have had with these JDM 207's. Thanks for your input!!! I just picked up a twinscroll downpipe bellmouth.

http://cgi.ebay.com/ebaymotors/Turbo...item2a0cf165fd

My plans are to use my existing 3" downpipe, cut the bellmouth off of it and weld the twinscroll one on. I have not decided yet if I am going catted or catless...any one have any opinions on this?

Thank you everyone for all the great input!!!

Tom
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Old 01-25-2011, 02:05 AM   #1236
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Grow some ballz and go a GT30 on your EJ207
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Old 01-25-2011, 09:29 AM   #1237
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Quote:
Originally Posted by scoobystas View Post
Not sure the gear box is the issue, the shape of the downpipe between jdm and usdm is identical as far as bends and the way it sits, so in theory it should fit with both gear boxes.

do you have a link to the downpipe in question? Are you sure the turbo is seated properly with the uppipe or uppipe with header, as an improper angle in those locations can cause your issues.
I thought they would be exactly the same too. Laying my UDSM Perrin DP next to the HKS one, it is pretty clear that the HKS one has a stronger bend to it. I will try to take a picture tonight when I get back from work. But basically from some research, I found that the STI crossmember sits about 7/8" higher than the 5-speed, which would make sense why this DP isn't fitting as it needs just about a 1/2" of clearance to fit.

The turbo, exhaust manifold, and uppipe are all seated properly, as I was able to install all of that on the engine stand before dropping it in the car, and the turbo is properly bolted down.

Either way, looking to have this issue solved soon, whether it involves cutting up the DP to make it fit, or just a good ole heat-n-beat method.
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Old 01-25-2011, 01:57 PM   #1238
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Quote:
Originally Posted by MConte05 View Post
I thought they would be exactly the same too. Laying my UDSM Perrin DP next to the HKS one, it is pretty clear that the HKS one has a stronger bend to it. I will try to take a picture tonight when I get back from work. But basically from some research, I found that the STI crossmember sits about 7/8" higher than the 5-speed, which would make sense why this DP isn't fitting as it needs just about a 1/2" of clearance to fit.

The turbo, exhaust manifold, and uppipe are all seated properly, as I was able to install all of that on the engine stand before dropping it in the car, and the turbo is properly bolted down.

Either way, looking to have this issue solved soon, whether it involves cutting up the DP to make it fit, or just a good ole heat-n-beat method.
I was going to comment on this right away but I decided to go back and find the context of the original situation. I was going to mention that my modified twinscroll flanged MRT catted downpipe did not fit either due to the gear box as well. My issue however was that my downpipe fit in the 5 speed but when I did the 6 speed swap, the tranny was much larger and wider that the clearance for the cat was no longer present. I ended up with a JDM AVO catless downpipe. (wow, that was more writing than I anticipated)

In regard to Scoobystas' situation, you could probably use the crossmembers from the 05-07 wrx's as a cheaper solution to your issue. They are identical to the 05-07 STi crossmembers since they share the same steering rack. I know that it has 6 mounting bolts instead of the 4 mounting point that 04 and below share but you can use just the 4. It is not any less secure because that is how our crossmembers are mounted. The other 2 holes are for hindering lateral movement on the newer racks. I hope that helps
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Old 01-25-2011, 04:53 PM   #1239
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Very interesting to hear. Was hard to find if anyone had the same issues I did. Figured there HAD to be someone who had.

May still try to cheap out and just bend the DP a bit to fit, but if that isn't successful, will keep that Crossmember information handy.

Where did you locate your AVO DP?
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Old 01-25-2011, 06:01 PM   #1240
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Do the EJ207's take the same ancillary, radiator, and boost hoses as the EJ205? I'm replacing the motor in my wagon that has 160,xxx miles on it and figured that it would be a good time to replace all the hoses as well but I want to make sure that I get the right ones.

Also, what kind of clutch setups are you guys running? I'm doing a full v7 swap with a JDM 6 speed trans and my immediate goal is 300wtq w/350wtq being the goal down the line. What would some of you guys recommend to get the best bang for your buck?

Last edited by Sir Mangina III; 01-25-2011 at 06:19 PM. Reason: I may or may not have posted something stupid for a moment......
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Old 01-25-2011, 06:20 PM   #1241
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as for a clutch for a V7 JDM 6 speed, i just used a stock '04 STi clutch/flywheel. best driveability, and it'll hold the torque of a EJ207 just fine. reember the V7/8 JDM trannies are the same as the '04 USDM STi trannies, but with shorter 5th and 6th. so if you're looking for parts (gears, short shift kits, tranny mounts, etc.), just look for parts that fit the 04 STi 6 speed.
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Old 01-25-2011, 06:27 PM   #1242
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oh, and as for your first question, the boost hoses should be the same actual hoses, but maybe different length. probably a different restrictor pill in the wastegate hose. not sure about that because i never tried to install my VF37. i also did away with the JDM factory boost control solenoid before it went in the car. but the radiator hoses should fit just fine. and all the electrical stuff plugs right up as long as you have the JDM engine harness. i will say that the power steering hose does not fit on the PS pump. there's an extra bend in the JDM one. so you'll have to use your USDM PS pump. and also, the AC compressor doesn't match up to the USDM AC lines. all easily remedied by just transferring over the three accessories over to your new motor.
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Old 01-25-2011, 07:33 PM   #1243
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Quote:
Originally Posted by MConte05 View Post
Very interesting to hear. Was hard to find if anyone had the same issues I did. Figured there HAD to be someone who had.

May still try to cheap out and just bend the DP a bit to fit, but if that isn't successful, will keep that Crossmember information handy.

Where did you locate your AVO DP?
I picked up the AVO from a local member. His handle was "methaddict". He's pretty active on the boards. I actually bought my original twin scroll downpipe flange from him that I used to make my MRT downpipe.
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Old 01-25-2011, 09:19 PM   #1244
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I just re-read your post. Do you think I am talking about the front crossmember? The issue I am having is with the gearbox crossmember:



The pipe is jammed against the rear part of the crossmember.
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Old 01-26-2011, 01:03 AM   #1245
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Quote:
Originally Posted by MConte05 View Post
I just re-read your post. Do you think I am talking about the front crossmember? The issue I am having is with the gearbox crossmember:

The pipe is jammed against the rear part of the crossmember.
Does your downpipe have the mount on it for it to be bolted up to the bracket back there before the cat? ie, like the one pictured:



Also, do you have the stock JDM downpipe that you could do a test fit with to make sure it is indeed in your car correctly?

I think some bending or cutting would do the trick. Unless you can make some $ by selling your current DP, i don't think you should look at buying a new DP.
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Old 01-26-2011, 09:42 AM   #1246
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Yep, it has the mount, and is pretty close to lining up with the stock bracket. I took some pictures of the DP compared to a USDM one (Don't have an original JDM one) and the differences are clear.

However, my work internet is odd, and can't upload pictures to imagehosting sites right now... Maybe can find a way around that...

Anyways, right now it is looking like the only way around this issue is either sell the DP (would rather not) or buy an STI crossmember, which is looking like the better option, as it sits almost an inch higher in the chassis, allowing for more clearance
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Old 01-26-2011, 10:31 AM   #1247
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Originally Posted by lil'redwagon View Post
as for a clutch for a V7 JDM 6 speed, i just used a stock '04 STi clutch/flywheel. best driveability, and it'll hold the torque of a EJ207 just fine. reember the V7/8 JDM trannies are the same as the '04 USDM STi trannies, but with shorter 5th and 6th. so if you're looking for parts (gears, short shift kits, tranny mounts, etc.), just look for parts that fit the 04 STi 6 speed.
Ok, that's exactly what I though. Thanks for the help! How much torque are you running on your stock STi clutch and flywheel? I know that they are pretty stout but I just want to make sure I'm not going to have any problems with my goals down the line.
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Old 01-26-2011, 10:35 AM   #1248
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Originally Posted by lil'redwagon View Post
oh, and as for your first question, the boost hoses should be the same actual hoses, but maybe different length. probably a different restrictor pill in the wastegate hose. not sure about that because i never tried to install my VF37. i also did away with the JDM factory boost control solenoid before it went in the car. but the radiator hoses should fit just fine. and all the electrical stuff plugs right up as long as you have the JDM engine harness. i will say that the power steering hose does not fit on the PS pump. there's an extra bend in the JDM one. so you'll have to use your USDM PS pump. and also, the AC compressor doesn't match up to the USDM AC lines. all easily remedied by just transferring over the three accessories over to your new motor.
That sounds reasonable, but I think I missed something. What is the 3rd accessory that you mention in the last sentence? I see power steering pump and AC compressor but I don't see anything about a third accessory. These are obviously both pretty easy things to do but I just want to make sure I didn't miss something else. Thanks for your help!
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Old 01-26-2011, 11:56 AM   #1249
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the third accessory is the alternator. i don't recall if there were any issues with the JDM one, can't imagine there would be, but i just switched all three while i was at it. but it is worth mentioning that some people run the JDM AC compressor because it's lighter. i guess they get the lines that connect directly to it, and figure out the connectivity of the condenser side of them.

i'm running 346 lb/ft through the stock STi clutch, as per Airboy road dyno software. it's been holding for about 15K so far with no issues.
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Old 01-26-2011, 02:09 PM   #1250
02 Scoob-TN
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Sir mangina, you can use the jdm accessories fine I did, The usdm ac line only has one bolt in it and needs a little bend to reach perfectly but mine sealed fine with only one bolt. Same with the P/S you just have to bend it a bit and make sure your threads match, if they don't, remove the adapter you'll find in the JDM pump and your usdm hose should now connect to it fine. Use the lower mile accessories if you get them , why wouldn't you right?

Edit added some pics.

Ac lines sealed fine!!






You do have to repin this connector, easy and obvious..


PS lines






The clutch setup I currently run and recommend:

Stock newer version pressure plate
ACT 6 puck sprung or sprung full faced if your scared
mid-weight flywheel 11-12 lbs.

Stock disc material is old school tech, heats up and burns up too easily if you ask me. Plus this setup can be had for cheap, I did mine for under 300 with flywheel. You can use any clutch if you know how to properly shift. Im on the glass 5-speed and launch perfect all day.

Last edited by 02 Scoob-TN; 01-26-2011 at 03:09 PM. Reason: added more info
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