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Old 12-22-2013, 06:13 PM   #176
Homemade WRX
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Who's recommend clearances did you run on the pistons?
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Old 12-22-2013, 06:33 PM   #177
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I went with JE's clearances based on power range and bore. I used a ring gapping tool and did the 1st and 2nd rings. I used the guidelines for street moderate which was very close to street. I multiplied the bore x .0050 for top ring and bore x .0055 for second ring. The oil rings had the bent ends so I had no way to measure those accurately. No smoke comes out of the oil neck at idle but it blows just enough so a piece of cardboard won't sit on the neck. I measured bores several times to get the diameter.

.019" top ring, .021" middle ring

Last edited by 2slofouru; 12-22-2013 at 06:45 PM.
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Old 12-22-2013, 07:01 PM   #178
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So what are your actual clearances? Use torque plates?
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Old 12-22-2013, 07:09 PM   #179
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Quote:
Originally Posted by Homemade WRX View Post
So what are your actual clearances? Use torque plates?
I posted ring clearances I got above. PTW clearance was .0040", no I did not use a torque plate. I don't want this to devolve into a torque honing rant especially since the actual cause of my issue hasn't been verified. From what I've read many of the concerns with blowby in this thread haven't even been rectified, people just keep routing hoses back and forth. I'm curious as to how many OEM engine manufacturers use torque plates when honing. I checked with a shop that regularly does subaru engines and they usually do .022" top ring and .024" middle ring so unless I damaged a ring or rings somehow when using the tapered ring installer. I will have to get compression and leakdown numbers but haven't had the chance to stay after work long enough.

Last edited by 2slofouru; 12-22-2013 at 08:42 PM. Reason: missed one decimal point on ptw
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Old 12-22-2013, 08:08 PM   #180
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Well I asked for a reason and not to rant. If you want to be narrow minded and limit what may be your cause, have fun.

Your PTW is huge, btw.
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Old 12-22-2013, 08:28 PM   #181
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Quote:
Originally Posted by Homemade WRX View Post
Well I asked for a reason and not to rant. If you want to be narrow minded and limit what may be your cause, have fun. Your PTW is huge, btw.
That's what she said


I agree that PTW is gigantic. How do they sound cold?? Why such a huge PTW and small end gap?
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Old 12-22-2013, 08:34 PM   #182
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Quote:
Originally Posted by Homemade WRX View Post
Well I asked for a reason and not to rant. If you want to be narrow minded and limit what may be your cause, have fun.

Your PTW is huge, btw.
Lol, my mistake in the ptw. I missed one 0, its .0040". And no its not being narrow minded aa you say, more like trying to make it clear I don't want to head that direction. I see it too much here. If you are just asking out of your own curiosity I understand.
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Old 12-22-2013, 08:36 PM   #183
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Quote:
Originally Posted by sidewayz View Post
That's what she said


I agree that PTW is gigantic. How do they sound cold?? Why such a huge PTW and small end gap?
Lol it was a typo, and they actually aren't very loud. In cold weather you hear them but not much with the hood closed. I expected them louder.
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Old 01-12-2014, 10:22 AM   #184
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Ok more work on the car. I removed my turbo and measured my drain per Precision. According to them the opening in the drain needs to be at least .51" in diameter. That is what the Precision part opening measures if you buy from them. The fitting I have which came from Precision but they say isn't theirs measures .53".

So my fitting is larger then their recommended and therefore should be sufficient. I'm about to send them another email with all my findings etc. the turbo has a very small amount of movement. You can pull the cartridge up and down. Just enough to hear a sound. It does not wobble or move off the axis. I assume when people talk about shaft play it is more off the axis than on the axis.

They mentioned that they were concerned with the bend of the drain tube back to the head as well. I think they are starting to grasp at straws.
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Old 01-12-2014, 02:58 PM   #185
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mann hummel provent 400 is good for 500 Kw 675 hp




http://www.marind.ca/medias/pdf/mote...er/ProVENT.pdf
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Old 01-12-2014, 04:36 PM   #186
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^ That is made for large industrial diesel engines. HUGE flow and it's a media (filter) type separator so there will be some serious resistance to flow, even though it's rated at a massive 400l/min. It has its place, and on a Subaru is not one of them.
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Old 01-12-2014, 05:50 PM   #187
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Quote:
Originally Posted by KillerBMotorsport View Post
^ That is made for large industrial diesel engines. HUGE flow and it's a media (filter) type separator so there will be some serious resistance to flow, even though it's rated at a massive 400l/min. It has its place, and on a Subaru is not one of them.

I use the 200 no "flow resistance at all"... what do you think separates oil from air ? why cant it be on a subaru have you even used one to say that ?


thats on my 1993 subaru legacy turbo ej22t build 400,000kms 427whp on that one, works flawless !




here is my 1986 Subaru Leone STi TURBO ej22t full race twin scroll s300sx build another proven fact that it works flawless !




I all so seen 2 used on race cars at sema last year.... one subaru owner was making 500+, said it was the best one he ever used !
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Old 01-12-2014, 06:49 PM   #188
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Quote:
Originally Posted by NICO TURBINE View Post
why cant it be on a subaru have you even used one to say that ?
On a forum this size it's easy to see LOTS of things done in questionable way. That doesn't mean it's right.

Quote:
Originally Posted by NICO TURBINE View Post
another proven fact that it works flawless !
Great, I'd love to use a flawless product. Show us your qualitative data (flow, backpressure, separation, air quality, track testing etc.) compared to other products known to perform well. I'd be all for using, and even endorsing, a product that works flawless.
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Old 01-12-2014, 07:39 PM   #189
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flawless product
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Old 01-12-2014, 09:54 PM   #190
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Quote:
Originally Posted by KillerBMotorsport View Post
On a forum this size it's easy to see LOTS of things done in questionable way. That doesn't mean it's right.



Great, I'd love to use a flawless product. Show us your qualitative data (flow, backpressure, separation, air quality, track testing etc.) compared to other products known to perform well. I'd be all for using, and even endorsing, a product that works flawless.


data flow is right on the Mann Hummle page >>> http://www.marind.ca/medias/pdf/mote...er/ProVENT.pdf





aircraft AOS have same design
http://www.aircraft-spruce.com/menus...eparators.html



million dollar WRC ones

see that monster black box in the middle of the picture thats a AOS.. you see how big those things are ! not coke a cola cans !!
















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Old 01-12-2014, 10:04 PM   #191
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Quote:
Originally Posted by KillerBMotorsport View Post
On a forum this size it's easy to see LOTS of things done in questionable way. That doesn't mean it's right.



Great, I'd love to use a flawless product. Show us your qualitative data (flow, backpressure, separation, air quality, track testing etc.) compared to other products known to perform well. I'd be all for using, and even endorsing, a product that works flawless.


here is some more reading why you need bigger... data flow >>> http://www.airwolf.com/products/air-...r-much-better/
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Old 01-12-2014, 10:07 PM   #192
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Quote:
Originally Posted by KillerBMotorsport View Post
^ That is made for large industrial diesel engines. HUGE flow and it's a media (filter) type separator so there will be some serious resistance to flow, even though it's rated at a massive 400l/min. It has its place, and on a Subaru is not one of them.


you said "HUGE flow" then say "some serious resistance to flow"



what are you talking about ??



where is your data sheets ? and flow charts ?
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Old 01-12-2014, 10:57 PM   #193
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Here's my mann hummel provent 200 a/o separator with my Fpred turbo set_up.



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Old 01-12-2014, 11:06 PM   #194
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A quick search didn't turn up any sellers for that unit. Where did you buy it from?
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Old 01-12-2014, 11:09 PM   #195
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You're taking what I typed out on context. That unit is rated for a large amount of flow encountered on a large industrial diesel engine that has a very different purpose than a small gasoline powered turbo Subaru engine. The ports are a massive 1.5" (3X the combined are a of the Suby PCV outlets) and it uses a filter as means of separation. Any filter is a restriction, any restriction causes pressure to rise. Most Suby enthusiasts will agree that the lower the crankcase pressure the better, which explains why most Subaru specific products are swirl pot or coalesce designs because they offer the least restrictive flow out of the PCV system. The separation process and design also determines size, bigger is better for some, but not all designs.

Yes there are many A/O separator designs, including aircraft (I prefer the Christen design, as their products are top notch) and many many race cars run elaborate ones per class rules to maintain a functioning PCV. I'm not familiar with ALL WRC (prodrive) designed setups, but I've never seen any of them that contained and kind of filter.

I have no A/O separator data to share.

IMO someone is going to have a higher probability of success using a product designed for a high performance Subaru vs one that is not. That's all I'm saying here.

If the product you are using works so well, then document the results vs a current Subaru product known to perform well. If it is truly proven with quantitative data to performs better, many will follow your results and be thankful for your contribution, including myself. Getting upset when someone questions bolting bulldozer parts onto a Subaru doesn't really help any point you're trying to make.
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Old 01-13-2014, 12:06 AM   #196
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Quote:
Originally Posted by 05_wRex View Post
A quick search didn't turn up any sellers for that unit. Where did you buy it from?

there is a part number for them... and make sure its made in german not the chinese knock off ones ! there becoming very popular now












Quote:
Originally Posted by KillerBMotorsport View Post
You're taking what I typed out on context. That unit is rated for a large amount of flow encountered on a large industrial diesel engine that has a very different purpose than a small gasoline powered turbo Subaru engine. The ports are a massive 1.5" (3X the combined are a of the Suby PCV outlets) and it uses a filter as means of separation. Any filter is a restriction, any restriction causes pressure to rise. Most Suby enthusiasts will agree that the lower the crankcase pressure the better, which explains why most Subaru specific products are swirl pot or coalesce designs because they offer the least restrictive flow out of the PCV system. The separation process and design also determines size, bigger is better for some, but not all designs.

Yes there are many A/O separator designs, including aircraft (I prefer the Christen design, as their products are top notch) and many many race cars run elaborate ones per class rules to maintain a functioning PCV. I'm not familiar with ALL WRC (prodrive) designed setups, but I've never seen any of them that contained and kind of filter.

I have no A/O separator data to share.

IMO someone is going to have a higher probability of success using a product designed for a high performance Subaru vs one that is not. That's all I'm saying here.

If the product you are using works so well, then document the results vs a current Subaru product known to perform well. If it is truly proven with quantitative data to performs better, many will follow your results and be thankful for your contribution, including myself. Getting upset when someone questions bolting bulldozer parts onto a Subaru doesn't really help any point you're trying to make.


lol i like the bulldozer part


i'm not mad at all, but for some reason i sound mad when i type on the computer.. no worries i get that allot


but these are designed with high-boost applications in mind: think giant ass turbos on the 18-wheelers that generate upwards of 40PSI.

These things are specifically designed not to create back pressure AND capture and separate 100% of all oil fumes. The truck engines these are most found in run for million hours between opening the heads/manifolds/etc.


I know the IN & OUT port on it is huge.... but hey when your building a car and modifying things, you make it work..


these provents are on tons of makes of cars around the globe for a very long time now, every review is the same ! they work flawless.. in the subaru world not to many of people are using them but its catching on slowly.... a google search will show these on tons of turbo cars.


the subaru community has not one good AOS out there !.. so many gimmicks that are crap and don't work... every week a crank case thread shows up about Brand XXX not working the way it should.


if the motor dosent breath it can actually screw up the relief valve on the oil pump and make it surge.... I seen, heard, made it happen, on one of my built motors way back play back...


to each there own on there AOS in the end...but killer b try it out if you got some time on your hands..
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Old 01-13-2014, 12:09 AM   #197
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Originally Posted by subaru_sti293 View Post
Here's my mann hummel provent 200 a/o separator with my Fpred turbo set_up.





very nice job


and he is computer graphics designer which did a fantastic job putting the provent in !
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Old 01-16-2014, 07:56 AM   #198
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The larger the unit, the easier it will be for the air to slow and drop oil out. Just saying. That hummel unit looks legit if it has a drainback. I never found one similar to it. I ended up with the Perrin because it seems to be an improvement over the crawford. I do wish it was at least twice as large though. Because of its tiny size, it will rely totally on the swirl pot effect instead of allowing oil to drop out of the air it will sling the oil out. Hopefully it is worth the scratch, will see when the bolt extender comes in so it will fit my 95.
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Old 02-15-2014, 01:31 AM   #199
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Alright, as of now I'm partial to the new Perrin system... But since it's been out for a while now does anybody see any flaws in there AOS vs the Crawford? I know it sounds sort of ricey but I like the look of the Perrin much more so if like to go with it.

I've also come across another unit called an Ixiz?? Anybody have any thoughts on this, a few searches said it was AMAZING & then a few others said it was garbage lol... Anybody have some real information though as to whether it's ACTUALLY good/bad &/or why?
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Old 02-15-2014, 04:15 AM   #200
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Alright, as of now I'm partial to the new Perrin system... But since it's been out for a while now does anybody see any flaws in there AOS vs the Crawford? I know it sounds sort of ricey but I like the look of the Perrin much more so if like to go with it.

I've also come across another unit called an Ixiz?? Anybody have any thoughts on this, a few searches said it was AMAZING & then a few others said it was garbage lol... Anybody have some real information though as to whether it's ACTUALLY good/bad &/or why?
nobody's going to be able to take you seriously and thus give you serious advice if you're worried about what it looks like.
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