Welcome to the North American Subaru Impreza Owners Club Sunday April 18, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 03-01-2021, 06:22 AM   #26
hotdog
Scooby Specialist
 
Member#: 197520
Join Date: Dec 2008
Chapter/Region: MWSOC
Location: Columbus, OH
Vehicle:
2020 WRX STI
Magnetite Gray Metallic

Default

Quote:
Originally Posted by a5m View Post
So what constitutes a 'long drive'? 30 minutes? I remember reading about short trips not being good for these engines and was concerned my 15 min drive wasn't enough. I guess so...
It's mostly an issue of temperature, not 'length'. In 15 minutes of normal driving, during the winter (as in stop and go, driving to the store type of thing) the motor oil will not be up to temperature. There is almost zero correlation between 'what the cute little temp needle says' and 'what the oil temperature actually is', and if you just take a normal, 15 minute drive, the temp gauge will 100% be 'in the middle', but your oil temperatures will be like... 140, 150. Which just isn't warm enough.

I have a loop I do if I don't drive all week; starts out nice and slow, gets it up a bit in temperature. Then a 'backwoods' route, where I can legit beat the **** out of it, then a return route, and some stop and go; the stop and go will legit let the oil temperatures rise more than a lot of the 'faster' stuff. I return home after ~25-30 minutes, and everything is nice and warmed up; oil temps 190+, etc etc.

If you don't have an oil temperature gauge, you're basically flying blind, but assume 20+ minutes of actual 'driving' to get the oil up to 190+.

This isn't a Subaru specific thing, either. All cars, from my wife's Mini Cooper S to my mother's boring Mazda 3, need to get up to temperature; charges the battery, burns off **** in the oil, etc etc. The EJ motor is not special.
* Registered users of the site do not see these ads.
hotdog is online now   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-01-2021, 08:57 AM   #27
rtv900
Scooby Guru
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by Mucho Maas View Post
The best place for me will be the simplest install, and I'm guessing that might be the oil gallery access port underneath the intercooler. .
Easiest would be a pan bolt with a temp sensor.
I have a 1950 vehicle with that set up.
Probably doesn't give the best reading being down in the pan with all that air passing over the pan, but it still comes up to temp as expected.

It would still give you a decent reading and no doubt easiest.

My sensor just came from the gauge company I used, which was Classic Instruments. Temp gauge, pan bolt, that's basically it. The bolt has a tiny electrical connection where you just put a ring terminal on it that goes to the gauge and the gauge needs 12v, done.
Probably the most annoying part is having to take off the wire for an oil change because I don't like twisting up the wire again and again.
Otherwise it's been working now for over 15 years trouble free.
rtv900 is offline   Reply With Quote
Old 03-01-2021, 09:02 PM   #28
Mucho Maas
Scooby Newbie
 
Member#: 212389
Join Date: May 2009
Location: SE MI
Vehicle:
2009 WRX 5-door
DGM

Default

Quote:
Originally Posted by rtv900 View Post
Easiest would be a pan bolt with a temp sensor.
I have a 1950 vehicle with that set up.
Probably doesn't give the best reading being down in the pan with all that air passing over the pan, but it still comes up to temp as expected.

It would still give you a decent reading and no doubt easiest.

My sensor just came from the gauge company I used, which was Classic Instruments. Temp gauge, pan bolt, that's basically it. The bolt has a tiny electrical connection where you just put a ring terminal on it that goes to the gauge and the gauge needs 12v, done.
Probably the most annoying part is having to take off the wire for an oil change because I don't like twisting up the wire again and again.
Otherwise it's been working now for over 15 years trouble free.
Pan bolt would be my choice, but I can't bear to let go of the Fumoto drain valve. Poking around some more, I discovered sandwich plates, which go in-between the engine and oil filter and provide ports for sensors (or an oil cooler). Leaning in this direction at the moment. Simple install, pretty cheap, and haven't heard of problems, but maybe someone here has.
Mucho Maas is offline   Reply With Quote
Old 03-01-2021, 09:40 PM   #29
K3rm1tth3fr0g
Scooby Newbie
 
Member#: 508105
Join Date: Nov 2019
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2002 Black WRX Wagon
VF39 + 4.44 5MT

Default

Quote:
Originally Posted by Mucho Maas View Post
Pan bolt would be my choice, but I can't bear to let go of the Fumoto drain valve. Poking around some more, I discovered sandwich plates, which go in-between the engine and oil filter and provide ports for sensors (or an oil cooler). Leaning in this direction at the moment. Simple install, pretty cheap, and haven't heard of problems, but maybe someone here has.



Perrin makes what you are looking for
K3rm1tth3fr0g is offline   Reply With Quote
Old 03-03-2021, 12:02 AM   #30
a5m
Scooby Newbie
 
Member#: 519868
Join Date: Nov 2020
Location: Chicago
Vehicle:
2010 Impreza WRX
Satin White Pearl

Default

Quote:
Originally Posted by hotdog View Post
It's mostly an issue of temperature, not 'length'. In 15 minutes of normal driving, during the winter (as in stop and go, driving to the store type of thing) the motor oil will not be up to temperature. There is almost zero correlation between 'what the cute little temp needle says' and 'what the oil temperature actually is', and if you just take a normal, 15 minute drive, the temp gauge will 100% be 'in the middle', but your oil temperatures will be like... 140, 150. Which just isn't warm enough.

I have a loop I do if I don't drive all week; starts out nice and slow, gets it up a bit in temperature. Then a 'backwoods' route, where I can legit beat the **** out of it, then a return route, and some stop and go; the stop and go will legit let the oil temperatures rise more than a lot of the 'faster' stuff. I return home after ~25-30 minutes, and everything is nice and warmed up; oil temps 190+, etc etc.

If you don't have an oil temperature gauge, you're basically flying blind, but assume 20+ minutes of actual 'driving' to get the oil up to 190+.

This isn't a Subaru specific thing, either. All cars, from my wife's Mini Cooper S to my mother's boring Mazda 3, need to get up to temperature; charges the battery, burns off **** in the oil, etc etc. The EJ motor is not special.
Thanks for the explanation. I get it. I should look into installing an oil temp gauge. Probably more important than a boost gauge honestly.

I had a short drive today that was just barely 20 mins. Late at night so not much traffic but still lots of stop and go. Was getting on her a bit to warm things up. Not sure if that even helps vs driving like a grandma. I guess as long as some longer drives are thrown in the mix throughout the week it should be fine?
a5m is online now   Reply With Quote
Old 03-06-2021, 09:33 AM   #31
Mucho Maas
Scooby Newbie
 
Member#: 212389
Join Date: May 2009
Location: SE MI
Vehicle:
2009 WRX 5-door
DGM

Default

In case someone missed this thread's bottom line - the consensus is unequivocally YES, it is a bad idea to block off my hood scoop in cold weather. And presumably any weather.

Instead, I should avoid short trips, which don't allow the engine oil to get hot enough to get rid of the water in the blowby. Sounds like the AOS didn't so much cause my issue as contributed to it.

I've already extended my commute, and ordered a block heater, sandwich plate, oil temp and oil pressure gauges.

Oh, and discovered this gauge faq late in my process - https://forums.nasioc.com/forums/sho....php?t=1193843
Mucho Maas is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 05:18 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.