3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

New Oil Filler Neck in production

Old Oct 23, 2024 | 06:45 AM
  #1  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
New Oil Filler Neck in production

We are releasing our new cast FD3S oil filler neck soon. This unit is a little more unique that most offerings on the market. It features a more indepth baffle system, and a drain back port for your catch can. Over the years we've seen many complaints about catch cans filling up on track driven cars, and we are hoping to solve that issue. Your oil catch can will need to be mounted higher than this return port, and use a check valve on this line. We are going to look at making a bolt in catch can/oil seperator to complement this neck. An aftermarket fill neck is also a necessity when changing your lower intake manifold to an aftermarket one, and with the release of our new units, it only made sense to start making these. Demand seems extremly high if we can hit our current target price of $199, so we might up production to 300 units from 200. We are doing one last fitment check today with a 3d printed model, as we made a few tweaks to ensure this fits every possible flavor of setup( DBW, oem throttle body, greddy elbow, our new throttle body elbow, etc etc). We should have the final pricing and production ETA later this week. It should be about 90-100 day range however.

Product Link


__________________
Rotary Performance Parts


Reply
Old Oct 23, 2024 | 09:16 AM
  #2  
boostin13b's Avatar
Rotary Enthusiast
Tenured Member: 20 Years
Liked
Loved
Community Favorite
 
Joined: Mar 2003
Posts: 1,293
Likes: 404
From: Tampa, Florida
Yes. I feel like this solution is long overdue. How does this fit with the factory intake, Throttle body, strut tower bar etc. for those of us that will be running mostly factory stuff but want to run an effective catch can setup?
Reply
Old Oct 23, 2024 | 10:40 AM
  #3  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Originally Posted by boostin13b
Yes. I feel like this solution is long overdue. How does this fit with the factory intake, Throttle body, strut tower bar etc. for those of us that will be running mostly factory stuff but want to run an effective catch can setup?
We have checked clearance against every combination of every part with the following items: OEM lower, OEM upper, Our upper, Our lower, OEM throttle body, Bosch DBW with our adapter, greddy elbow, and our elbow. I have not checked with an OEM strut tower bar, because we don't have one, but it looks like it will clear based on photos.
Reply
Old Oct 24, 2024 | 12:21 AM
  #4  
scotty305's Avatar
~17 MPG
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Jan 2004
Posts: 3,478
Likes: 334
From: Bend, OR
It looks good. What size is the vent port near the filler neck?

Also, how are people measuring that their crankcase ventilation setups are working well on rotary engines? Do similar rules-of-thumb apply as the piston engine guys, where they might measure pressure and want to see less than 1psi? Are we stuck putting up with higher crankcase pressure numbers, assuming the rotary engine doesn't seal as well as piston engines?
Reply
Old Oct 24, 2024 | 06:24 AM
  #5  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Originally Posted by scotty305
It looks good. What size is the vent port near the filler neck?

Also, how are people measuring that their crankcase ventilation setups are working well on rotary engines? Do similar rules-of-thumb apply as the piston engine guys, where they might measure pressure and want to see less than 1psi? Are we stuck putting up with higher crankcase pressure numbers, assuming the rotary engine doesn't seal as well as piston engines?
10AN. Best way to know if its working properly is by how fast your catch can is filling up

Reply
Old Oct 24, 2024 | 07:46 PM
  #6  
Djseto's Avatar
Senior Member
Tenured Member: 5 Years
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Apr 2018
Posts: 636
Likes: 197
From: NC
I need one. Where do I preorder so I don’t miss this batch?
Reply
Old Oct 25, 2024 | 06:44 AM
  #7  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Originally Posted by Djseto
I need one. Where do I preorder so I don’t miss this batch?
We haven't opened this up yet, will make an annoucement within a couple days. Just waiting on the ETA from our foundry so we can be clear on the delivery dates.

We were able to sneak a few more baffles into the final design too!
Reply
Old Oct 29, 2024 | 08:16 AM
  #8  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Pre order is now live, we were able to get these to come in under $200...

https://turbosource.com/products/tur...il-filler-neck
Reply
Old Nov 14, 2024 | 02:45 AM
  #9  
StarletRick's Avatar
Junior Member
 
Joined: Jan 2024
Posts: 12
Likes: 4
From: Essex, UK
Is this required for your UIM/LIM combo? I’ve got both on order so may as well add this now if it’s going to hold me up..
Reply
Old Nov 14, 2024 | 07:47 AM
  #10  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Originally Posted by StarletRick
Is this required for your UIM/LIM combo? I’ve got both on order so may as well add this now if it’s going to hold me up..
Our LIM requires an aftermarket oil filler neck, UIM only does not. Every single turbo car, or anything above 15 psi should have one regardless.

So yes you will want to add this if you are still on the OEM unit.
Reply
Old Nov 14, 2024 | 09:23 AM
  #11  
StarletRick's Avatar
Junior Member
 
Joined: Jan 2024
Posts: 12
Likes: 4
From: Essex, UK
Looks like I’m ordering one then 🤣
Reply
Old Jan 20, 2025 | 11:17 AM
  #12  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Samples have checked out. We have a small amount shipping out to customers now for some feedback, while we start casting 300 of these units.



__________________
Rotary Performance Parts


Reply
Old Jan 22, 2025 | 07:50 AM
  #13  
Smokey The Talon's Avatar
Long time on-looker
Tenured Member: 20 Years
Liked
iTrader: (33)
 
Joined: Oct 2005
Posts: 886
Likes: 50
From: Columbus, OH
Very cool to see this development. Question for you on this requirement “Your oil catch can will need to be mounted higher than this return port, and use a check valve on this line.” Have you found a catch can that will work for this? I’m assuming with the auto drain back, that a much smaller can with less capacity is needed, but I’d be curious as to what can and where it’d be mounted.
Reply
Old Jan 22, 2025 | 08:45 AM
  #14  
ptrhahn's Avatar
Lives on the Forum
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (11)
 
Joined: Feb 2002
Posts: 9,282
Likes: 703
From: Arlington, VA
I'm wondering if it will actually drain at all until the car is shut off. There's nearly always going to be pressure while the car is on.

This is a really cool development and it'll be great to see how it works. Thus far i've focused on breathing it all out so less pressure is built up, and less oil displaced.
Reply
Old Feb 3, 2025 | 07:44 AM
  #15  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Originally Posted by ptrhahn
I'm wondering if it will actually drain at all until the car is shut off. There's nearly always going to be pressure while the car is on.

This is a really cool development and it'll be great to see how it works. Thus far i've focused on breathing it all out so less pressure is built up, and less oil displaced.
In theory with a proper size vent on the catch can there shouldn't be much pressure on the system when the car is on decel. I have not personally run this, but I have two customers who swear by it( track only race cars).
__________________
Rotary Performance Parts


Reply
Old Feb 3, 2025 | 07:45 AM
  #16  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Will require a custom fabricated one. Its on our do to list of parts to make, but that list is HUGE, and we are trying to finish our current plate.
Reply
Old May 25, 2025 | 04:52 PM
  #17  
InspectorSeb's Avatar
Junior Member
 
Joined: Sep 2023
Posts: 13
Likes: 2
From: NY
Can't say I'm overly impressed with the finished product. There were metal shavings in mine. Pictured is just what came out in a light knock.








Reply
Old Oct 20, 2025 | 06:14 PM
  #18  
Turblown's Avatar
Thread Starter
Turn up the boost
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (12)
 
Joined: Dec 2001
Posts: 7,174
Likes: 236
From: Twin Cities, MN
Can you DM me about that? I would be more than happy to swap that out, these are cleaned 2X( once by our machine shop, and once in house by us before shipping). So I am not sure how that happened. I even use a inspection camera on a lot of them to make sure of this.

I can report that multiple track only cars have completely fixed their catch can issues( having to pit stop to drain their catch cans) after installing these.

We have over 300 + in stock also.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Aarkaah
3rd Generation Specific (1993-2002)
20
Sep 15, 2020 02:06 PM
adictd2b00st
3rd Generation Specific (1993-2002)
2
Jun 15, 2006 05:29 PM
scott(pittsburgh)
Rotary Car Performance
3
Nov 3, 2002 08:14 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:34 PM.