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Old 04-23-2018, 05:54 PM   #1
muppetman342
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Question Yoshifab Catch Can or Provent Feedback?

Thinking of upgrading my PCV system to keep all that oil out of my intake. I'm currently eyeing the Yoshifab setup or the Mann Provent. The Yoshifab setup looks nice, but I can't help but think I'd get more filtering out of the Provent, and the Provent is cheaper. Tbh not entirely sure how to justify the Yoshifab price other than that it looks nice, but to me it seems like it wouldn't be any more effective, maybe even less, than running some generic can inline with the stock breather.

Anyone have any experience with either and how much cleaner they did/didn't make your intact tract?
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Old 04-23-2018, 10:16 PM   #2
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I have never heard of the Mann product, looks nice and simple.

I have used the yoshifab unit and liked it a lot so I just purchased a second unit for my wagon but next time I might pick up one of the Mann units for one of the other cars.
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Old 04-23-2018, 10:29 PM   #3
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Originally Posted by thelostartof View Post
I have never heard of the Mann product, looks nice and simple.

I have used the yoshifab unit and liked it a lot so I just purchased a second unit for my wagon but next time I might pick up one of the Mann units for one of the other cars.
Did you notice a difference in the amount of oil in your intake with the yoshifab kit?
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Old 04-23-2018, 10:47 PM   #4
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I would say less, but the 744 doesn't really put a lot of DD miles on it to much these days so I only had maybe 3000 miles on it over the last year or so. Once I get the 744 back together and running I can say for sure, but in those 3000 miles there was little to zero oil heading into the turbo, I am sure it helps that my HY35CW has less than 50k miles on it as I bought it new 10+ years ago as most TB'ers are running either self rebuilt turbos or 150k+ mile used units. Once Yoshifab ships my current kit I paid for I can get it on the wagon and see if that helps but even then I do not have a ton of oil in the intake system currently but my dipstick does pop out from time to time.

https://oe-products.mann-hummel.com/...ProVent_en.pdf



I always liked mann products but this looks great. myself I would prefer the Provent 400 unit. The Provent 200 is $140 tho so not a lot cheaper than the yoshifab unit unless you add in all of the block and other fittings.

My largest complaint on the yoshifab kit is that the fittings are a bit small being -10 but since there are two points for flow into the catch can maybe not as much of an issue.

Last edited by thelostartof; 04-23-2018 at 11:03 PM..
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Old 04-24-2018, 08:59 AM   #5
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I have been running the provent 200 for the last 40k miles. Changed the filter ~3k miles ago. I've never had oil buildup issues in my turbo(s). Even at higher boost. I kept the stock oil separator and connected the provent after that. It also drains to the sump via a check valve.
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Old 04-24-2018, 09:11 AM   #6
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I've bought and returned both (due to packaging constraints with my setup). I would run the Mann if it suited my needs, it's a nice piece. It is large, check the dimensions on the Mann site.

Yoshi can is nice but, yes, really just a generic can. I returned mine with the intent to order a Saikou Michi because I could have it built to spec.
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Old 04-24-2018, 09:15 AM   #7
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Here is a more budget-friendly option that I am using. You will need to gather the appropriate fittings to connect to your setup but overall works well. I don’t have oil in my pre-turbo piping (I removed the included filter and ran a line to the pre-turbo pipe) Can also be plumbed to drain back to oil pan if desired.

https://rover.ebay.com/rover/0/0/0?m...2F262628636931
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Old 04-24-2018, 09:30 AM   #8
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Quote:
Originally Posted by Stiggy Pop View Post
I've bought and returned both (due to packaging constraints with my setup). I would run the Mann if it suited my needs, it's a nice piece. It is large, check the dimensions on the Mann site.

Yoshi can is nice but, yes, really just a generic can. I returned mine with the intent to order a Saikou Michi because I could have it built to spec.
+1. I have the Yoshi can in mine, and it's not as baffled as it could be. I just put some stainless steel scrubbers in the can to try to help with that, but the Provent filter system looks really nice.
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Old 04-24-2018, 10:48 AM   #9
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What way would the Provent be plumbed into the existing system ??

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Old 04-24-2018, 01:20 PM   #10
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Very much like the look of the provent.

Will have to get one and give it a try
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Old 04-24-2018, 01:47 PM   #11
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Stuff here.

https://forums.tbforums.com/showthre...rovent&page=11
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Old 04-24-2018, 01:55 PM   #12
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I've got a ProVent in my '80.




Had to relocate it, once I finally got the fresh ZF rack in there.

It's big, and I don't have it plumbed to drain back into the pan, but I haven't really noticed much collecting in it. I may try and move it higher to the PS of the bay at a later time.
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Old 04-24-2018, 02:10 PM   #13
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Quote:
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I've got a ProVent in my '80.

HERE and HERE

Had to relocate it, once I finally got the fresh ZF rack in there.

It's big, and I don't have it plumbed to drain back into the pan, but I haven't really noticed much collecting in it. I may try and move it higher to the PS of the bay at a later time.

No photos
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Old 04-24-2018, 02:39 PM   #14
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Provent's are the ****.
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Old 04-24-2018, 03:01 PM   #15
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Should give you a good idea of the plumbing.
Stock breather box--> Provent--> tee to intake manifold--> Pre turbo pipe
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Old 04-24-2018, 04:11 PM   #16
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Quote:
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No photos

Should go to the posts in my build thread, where there are photos.
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Old 04-24-2018, 04:50 PM   #17
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Quote:
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Should go to the posts in my build thread, where there are photos.

Still no photos.

Are they shared from FB?
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Old 04-24-2018, 08:18 PM   #18
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Quote:
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Still no photos.

Are they shared from FB?
Nope. From my personal host site.

I just added the pics, something was being dumb, evidently.
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Old 04-25-2018, 03:47 AM   #19
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Provent can be had from China-alixpress much cheaper

Going with a provent 200 too on my b230, running in series with the stock pcv box. Homer gave me the idea.
Pcv box directly to turbo intake gives oily mess and even some water turned into ice which damaged the compressor..
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Old 04-25-2018, 07:52 AM   #20
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Quote:
Originally Posted by JW240 View Post
Pcv box directly to turbo intake gives oily mess and even some water turned into ice which damaged the compressor..
Well the heater element on the intake hose should prevent the ice if it's hooked up

You planning on having the provent drain back to the block anywhere? I'm debating just putting barbed fitting on the drain side of the stock breather and draining into there, don't see why that wouldn't work.
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Old 04-25-2018, 08:58 AM   #21
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Quote:
Originally Posted by muppetman342 View Post
Well the heater element on the intake hose should prevent the ice if it's hooked up

You planning on having the provent drain back to the block anywhere? I'm debating just putting barbed fitting on the drain side of the stock breather and draining into there, don't see why that wouldn't work.
Same thing I was thinking, but with a YoshiFab kit on the way for my wagon maybe not. I like that the Provent is 1".

I guess I will get one of these for my other cars.
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Old 04-25-2018, 11:29 AM   #22
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I used Provent on VW pancake motor. It's a good part for the money.

On the related subject: draining oil back into the crankcase from the catch can should be avoided whenever possible.
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Old 04-25-2018, 11:30 AM   #23
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Quote:
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On the related subject: draining oil back into the crankcase from the catch can should be avoided whenever possible.
Seeking to understand...can you explain why?
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Old 04-25-2018, 11:47 AM   #24
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Because other than perfectly good reusable oil the can will contain water condensation, fuel and blow by contaminants mixed with it. Think of an oil catch can as filter- whatever it caught doesn't need to go back.
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Old 04-25-2018, 12:33 PM   #25
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Quote:
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Because other than perfectly good reusable oil the can will contain water condensation, fuel and blow by contaminants mixed with it. Think of an oil catch can as filter- whatever it caught doesn't need to go back.
You might want to have a chat with every engine manufacturer out there. The stock oil separator drains back to the crankcase. The provent is just doing a better job of separating the oil from the blowby gases. There's no functional reason not to drain it back. You should be getting your oil up to temp so the water vapor and other volatiles will evaporate.
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