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Old 01-25-2012, 07:33 PM   #2401
Clark Turner
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You need some good 2.0 forged pistons and a good machine shop to install them properly. Mahle weiseco or cosworth would be my choices.
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Old 01-25-2012, 07:44 PM   #2402
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Quote:
Originally Posted by Clark Turner View Post
You need some good 2.0 forged pistons and a good machine shop to install them properly. Mahle weiseco or cosworth would be my choices.
I just did mine with a renowned shop / machine shop.

Mahle's were B/O. We put wossner's instead. Never heard of em. any clue ?

seems deutchlandish.
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Old 01-25-2012, 07:54 PM   #2403
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http://www.wossnerpistons.com/company/history

Yeah. I have heard of them before but never used them. Most machine shops cant bore the subaru block correctly as they do not have the trq plate and do not want to invest in one. So do your homework.

On the pistons. The boxer piston is laying over. So the taper at the top of the piston crown is very important. I always liked mahle pistons as they have been making porsche/vw boxer motor pistons for many many years. I figure they know what they are doing here...

I do know that I really like the cosworth pistons and I feel they are worth some power on the 2.5's. However, I rarely see them in the 2.0 motors.

C
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Old 01-25-2012, 08:09 PM   #2404
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I was looking into cp or je pistons. I have one of the best machine shops on the east coast about 40 mins away (Larry's Power). Also have EFI Logics an hour away (they send their blocks to Larry's Power).
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Old 01-25-2012, 08:17 PM   #2405
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Quote:
Originally Posted by Clark Turner View Post
http://www.wossnerpistons.com/company/history

Yeah. I have heard of them before but never used them. Most machine shops cant bore the subaru block correctly as they do not have the trq plate and do not want to invest in one. So do your homework.

On the pistons. The boxer piston is laying over. So the taper at the top of the piston crown is very important. I always liked mahle pistons as they have been making porsche/vw boxer motor pistons for many many years. I figure they know what they are doing here...

I do know that I really like the cosworth pistons and I feel they are worth some power on the 2.5's. However, I rarely see them in the 2.0 motors.

C
good read, thx.

I've had SwapShop do my short block. they do most top 10 cars in the CRC championship ( canadian rally championship ). I've known them for years, but this is the first short block I give them. I guess we'll see on friday when I start her up.

:anxious:

edit :

I guess I'll also let you know how they last on the long run. Sent a cheque today for 2 lapping days @ Le Circuit Mont-Tremblant.
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Old 01-25-2012, 10:17 PM   #2406
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Not sure if this is the right thread, but I'll ask anyway--I have a ver 9 EJ207 and I need to replace the ignition coil pack on the rear driver's cylinder (LHD USDM car)

Do I need to get the coil pack for that specific cylinder or do they all fit in any location?
Do I need to get one specifically for the ej207 or will one from an ej205 work? I saw in another thread that the coil pack is a slightly different size in the ej257 vs ej205, so I wasn't sure.
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Old 01-25-2012, 10:22 PM   #2407
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there are upgraded grey color coil packs that are supposed to last longer but the black version will also work i believe. pretty sure all the coil packs on 02-07 subaru's are the same as far as i know.
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Old 01-25-2012, 10:25 PM   #2408
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I saw the first reply in this thread (http://forums.nasioc.com/forums/show...=ignition+coil) saying they're slightly different size from the 205 to 257 which is why I was worried.

So I guess I should just grab one for an 02-05 wrx?
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Old 01-25-2012, 10:40 PM   #2409
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okay so basically you can use either or. if your not hi perf than just get the wrx ones. the sti ones just needed wrx boots to go into a wrx.
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Old 01-25-2012, 11:09 PM   #2410
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Would 330-350 whp be considered high performance? Really just going to run the engine with an e85 tune.
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Old 01-26-2012, 07:40 AM   #2411
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Quote:
Originally Posted by mark342 View Post
Not sure if this is the right thread, but I'll ask anyway--I have a ver 9 EJ207 and I need to replace the ignition coil pack on the rear driver's cylinder (LHD USDM car)

Do I need to get the coil pack for that specific cylinder or do they all fit in any location?
Do I need to get one specifically for the ej207 or will one from an ej205 work? I saw in another thread that the coil pack is a slightly different size in the ej257 vs ej205, so I wasn't sure.
The coil packs for the 207 have a different part number, at least for the V9.
Edit:
There are two part numbers for USDM EJ205 coils, the cutoff is around 2003.
The coils sell by the set of 4 from what I can tell, and both the late (after 2003) 205 and V8-9 207 end up being substituted by 22433AA550.
I had early 205 brand new coils on my 205 and those are a different part number than my V9, I could not re-use them.

So, to answer grab a 03-05 set of WRX coils, stay away from the 02-03 coils, use 257 coils if you're going to update the table.

Last edited by Vlad; 01-26-2012 at 10:37 AM.
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Old 01-26-2012, 11:31 AM   #2412
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So with a v7 motor I should have 02-03 coil packs?
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Old 01-26-2012, 11:58 AM   #2413
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Quote:
Originally Posted by Clark Turner View Post
http://www.wossnerpistons.com/company/history

Yeah. I have heard of them before but never used them. Most machine shops cant bore the subaru block correctly as they do not have the trq plate and do not want to invest in one. So do your homework.

On the pistons. The boxer piston is laying over. So the taper at the top of the piston crown is very important. I always liked mahle pistons as they have been making porsche/vw boxer motor pistons for many many years. I figure they know what they are doing here...

I do know that I really like the cosworth pistons and I feel they are worth some power on the 2.5's. However, I rarely see them in the 2.0 motors.

C
Clark, is there something particular about the dish or design of the cosworth that gives it a power advantage? Besides inherent strength, I was under the impression that given the same piston face design, there's no power to be made, just more can be supported.
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Old 01-26-2012, 12:21 PM   #2414
Clark Turner
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There are two major types of coils. Black or grey. Look at see which ones you have. Your V9 should have Grey coils which will be the same as the US STI. You can find used ones.

The cosworth piston has a different crown design. I have held them in my hand and compared them. The quench area is different and as a result, The det threashold is much higher. 20 to 30 hp is typical.

C
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Old 01-26-2012, 04:17 PM   #2415
Vlad
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22433AA560 USDM WRX02-03, V7 JDM Sti
22433AA550 USDM WRX04-05, V8-9 JDM Sti
22433AA540 GD USDM Sti
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Old 01-26-2012, 06:12 PM   #2416
Clark Turner
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Black or grey. Maybe Vlad has special JDM Pink Coils. LOL

C
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Old 01-26-2012, 06:33 PM   #2417
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Hey, don't blame me because Subaru didn't get the memo that there's only black and grey coil packs for EJ
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Old 01-26-2012, 06:34 PM   #2418
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clark is your motor a v7? running black coils? im going to buy a working set of coils for spare. cant seem to figure out my misfire issue at peak boost. im fine at 19-20psi with plugs gapped to .026. but 21 which im tuned for i get misfires under load.

hoping efi logics can set her straight on the re-tune day. previous owner gingertooth had it tuned by you and dave brown at mspt on a safe tune for the stock trans
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Old 01-26-2012, 06:48 PM   #2419
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Quote:
Originally Posted by mrxr250rider View Post
clark is your motor a v7? running black coils? im going to buy a working set of coils for spare. cant seem to figure out my misfire issue at peak boost. im fine at 19-20psi with plugs gapped to .026. but 21 which im tuned for i get misfires under load.

hoping efi logics can set her straight on the re-tune day. previous owner gingertooth had it tuned by you and dave brown at mspt on a safe tune for the stock trans

haha ive seen your car then. Well gingertooths car. He drove up to swap exhausts... hows the tanabe catback doing, still on there?
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Old 01-26-2012, 07:00 PM   #2420
Clark Turner
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Quote:
Originally Posted by mrxr250rider View Post
clark is your motor a v7? running black coils? im going to buy a working set of coils for spare. cant seem to figure out my misfire issue at peak boost. im fine at 19-20psi with plugs gapped to .026. but 21 which im tuned for i get misfires under load.

hoping efi logics can set her straight on the re-tune day. previous owner gingertooth had it tuned by you and dave brown at mspt on a safe tune for the stock trans
Are you using NGK plugs? Its probably not running right as it was not tuned for that boost. If you use stock or one step colder copper or IR NGK plugs gapped at 026. You wont misfire at the boost I tuned it for. If I tuned it, Send me some logs with the map and I will see whats going on.

Maybe you can get some of those special Race coil packs from Vlad. I hear they are bright pink and make another 15 whp.

Oh and yes, My V7RA motor came with black coil packs. The original ones. Pretty standard stuff.
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Old 01-26-2012, 07:45 PM   #2421
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Oh, stop already...Listen, pink or no pink, I posted a part number. What do you got? dancing banana?
And you know what? If I'm wrong and you're right, so be it, but tell me how the three work out to be two and don't give me the grey color as the reason...

If it just bothers you that you're wrong... hey, be my guest, flame away.
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Old 01-26-2012, 08:24 PM   #2422
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They are the same.

C
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Old 01-26-2012, 08:28 PM   #2423
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Quote:
Originally Posted by Clark Turner

Are you using NGK plugs? Its probably not running right as it was not tuned for that boost. If you use stock or one step colder copper or IR NGK plugs gapped at 026. You wont misfire at the boost I tuned it for. If I tuned it, Send me some logs with the map and I will see whats going on.

Maybe you can get some of those special Race coil packs from Vlad. I hear they are bright pink and make another 15 whp.

Oh and yes, My V7RA motor came with black coil packs. The original ones. Pretty standard stuff.
Yes ngk one step colder iridium gapped to .026 like you reccomended. Previous owner said it was tuned to 21. I'm peaking at around 19-20 now with no misfires.21 will pull fine but will mis underload like as it has the wrong plugs or gap. but fine with little load wot.which obviously isn't right and can't daily drive it like that. How do I go about sending a log? Feel free to email me [email protected]. I appreciate the help
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Old 01-26-2012, 08:36 PM   #2424
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Quote:
Originally Posted by Jubert39

haha ive seen your car then. Well gingertooths car. He drove up to swap exhausts... hows the tanabe catback doing, still on there?
Naw he traded it for an spt right before I got the car. I now have an autospeed on it now and love it. I remember the tanabe sounding good too
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Old 01-26-2012, 10:23 PM   #2425
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Hey I have a weird problem for you guys.

Currently in the process of tuning my recently swapped 207 v7. Did all the maf scaling etc. Then I did 3rd gear pulls and the Tuner dialed that in. 3-7200k rpm not one problem. So I was told to start doing 4th gear pulls.

First pull to 7k cut out at 6500. Tried it again and it won't go past 6500. Installed new spark plugs 1 step colder ngk and gapped them to .026. Car still will not go past 6500. Any ideas? It doesn't feel like fuel cut but more of a rev limiter....
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