Welcome to the North American Subaru Impreza Owners Club Tuesday October 21, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Pre-2002 Factory Turbo Powertrain

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.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 11-16-2012, 04:51 PM   #1
Cbgrandtheftauto
Scooby Specialist
 
Member#: 184977
Join Date: Jul 2008
Chapter/Region: South East
Location: TN
Vehicle:
99 Impreza RS
'13 BRZ

Default Whats up with the timing belt?

Finally getting around to finishing up my unbelievably 3 year long over stretched build and I ran into a problem at the timing belt.

A quick rundown..

ej20k heads
Ej22T block
Stroked out 2.35L
cosworth 272's
.40" Cosmetic HG

So I have the crank on TDC with the belt marks in the right place..




I've got the cams aligned in their correct place..





Why aren't my marks for the cams lining up on the belt?









Would it have anything to do with my belt being for a USDM motor?

Does it matter if the marks aren't aligned if the crank and cams are?
* Registered users of the site do not see these ads.
Cbgrandtheftauto is offline   Reply With Quote
Old 11-16-2012, 06:09 PM   #2
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

Line the marks on the pulleys up with the marks on the belt. Nothing else matters.

You have the belt on backwards now.
69subaru360 is offline   Reply With Quote
Old 11-16-2012, 09:12 PM   #3
Cbgrandtheftauto
Scooby Specialist
 
Member#: 184977
Join Date: Jul 2008
Chapter/Region: South East
Location: TN
Vehicle:
99 Impreza RS
'13 BRZ

Default

That's what I was thinking after I posted this, but figured it should be the same distance between the marks on each side. I haven't pulled the pin on the tensioner so I'll flip it around tomorrow.

Thanks for confirming I'm an idiot..lol
Cbgrandtheftauto is offline   Reply With Quote
Old 11-17-2012, 12:37 AM   #4
elislider
Scooby Specialist
 
Member#: 133923
Join Date: Dec 2006
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
03 Legacy GT wagon
I love goooollllllllddddd

Default

yes you have the belt on backwards.

also bear in mind the cam marks will be off ever so slightly before you pull the pin on the tensioner. once you do that everything will settle into place so kinda plan ahead on that.
elislider is offline   Reply With Quote
Old 11-17-2012, 02:36 PM   #5
Cbgrandtheftauto
Scooby Specialist
 
Member#: 184977
Join Date: Jul 2008
Chapter/Region: South East
Location: TN
Vehicle:
99 Impreza RS
'13 BRZ

Default

Quote:
Originally Posted by elislider View Post
yes you have the belt on backwards.

also bear in mind the cam marks will be off ever so slightly before you pull the pin on the tensioner. once you do that everything will settle into place so kinda plan ahead on that.
Thanks E,

I flipped it over this morning and noticed blue arrows underneath "Subaru". Not sure how I missed them. Everything lined up right on. I did notice the cams moving as I played with the slack so I set them to the right place and once I pulled the pin everything was spot on.

I rotated the motor over to make sure everything was settled in and going to stay spot on, but after rotating the belt all the way around once the cams weren't in line. How many times does the belt have to go around before everything lines back up? or is it a one time deal as to why everything has to be lined up right the first time?
Cbgrandtheftauto is offline   Reply With Quote
Old 11-17-2012, 02:49 PM   #6
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

Quote:
Originally Posted by Cbgrandtheftauto View Post
Thanks E,

I flipped it over this morning and noticed blue arrows underneath "Subaru". Not sure how I missed them. Everything lined up right on. I did notice the cams moving as I played with the slack so I set them to the right place and once I pulled the pin everything was spot on.

I rotated the motor over to make sure everything was settled in and going to stay spot on, but after rotating the belt all the way around once the cams weren't in line. How many times does the belt have to go around before everything lines back up? or is it a one time deal as to why everything has to be lined up right the first time?
As long as you had the marks on the belt lined up with the marks on the pulleys you have nothing to worry about at all. That's all that matters.

You'd have to spin it 200 and some times for everything to line up again.
69subaru360 is offline   Reply With Quote
Old 11-17-2012, 07:55 PM   #7
elislider
Scooby Specialist
 
Member#: 133923
Join Date: Dec 2006
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
03 Legacy GT wagon
I love goooollllllllddddd

Default

yeah the marks on the timing belt are only there for convenience of setting time. once you turn the engine, they are irrelevant, as long as the marks on the crank and cam gears all stay lined up, you're good

also technically you didnt have to turn the belt around. its symmetrical
elislider is offline   Reply With Quote
Old 11-17-2012, 07:59 PM   #8
69subaru360
Scooby Guru
 
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

Default

Quote:
Originally Posted by elislider View Post
yeah the marks on the timing belt are only there for convenience of setting time. once you turn the engine, they are irrelevant, as long as the marks on the crank and cam gears all stay lined up, you're good

also technically you didnt have to turn the belt around. its symmetrical
Actually he did, the arrows are the direction of rotation. Something about how the belt is internally constructed, the cords are directional or something like that. Yeah it would have run, but why risk it?
69subaru360 is offline   Reply With Quote
Old 11-17-2012, 09:40 PM   #9
Cbgrandtheftauto
Scooby Specialist
 
Member#: 184977
Join Date: Jul 2008
Chapter/Region: South East
Location: TN
Vehicle:
99 Impreza RS
'13 BRZ

Default

Quote:
Originally Posted by 69subaru360 View Post
Actually he did, the arrows are the direction of rotation. Something about how the belt is internally constructed, the cords are directional or something like that. Yeah it would have run, but why risk it?
Like a directional tire. If spun the wrong direction problems can and probably will occur.
Cbgrandtheftauto 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 05:03 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.