Timing on newly forged motor! - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-17-2013, 04:40 PM   #1
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default Timing on newly forged motor!

Hey guys! So I just rebuilt my motor and have been having a hell of a time getting the timing right. I took the CAS off and twisted it past the adjuster and the car runs great, however I know that this is only a temporary fix. I know there is a way to count the belt teeth or something to double check the timing.
Thanks!
Chase
Forged on Manley rods and 8.8:1 supertech pistons!!! Ready for a turbo!

Attached Thumbnails
Timing on newly forged motor!-krb0csk.jpg   Timing on newly forged motor!-yvvyy5r.jpg  
claurence42 is offline   Reply With Quote
Old 07-17-2013, 04:48 PM   #2
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

19 teeth between marks looks good. Does everything line up otherwise? The main crank notch, and then the upper two. It's impossible to tell at the angle this picture was taken.
Fireindc is offline   Reply With Quote
Old 07-17-2013, 04:53 PM   #3
Junior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Ellicott City, MD
Posts: 458
Total Cats: 6
Default

From this angle looks like exhaust is a tooph off. But that could be the angle of the dangle.

Also no coolant re-route no ready for trubo.
MicaCeli is offline   Reply With Quote
Old 07-17-2013, 04:53 PM   #4
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default

Hmmm ok, the yellow notch on the crank is top dead center right? I can take more pictures however I was hoping I did not have to remove the crank pulley.
claurence42 is offline   Reply With Quote
Old 07-17-2013, 04:56 PM   #5
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Talking

coolant reroute is on my list to do also
claurence42 is offline   Reply With Quote
Old 07-17-2013, 04:58 PM   #6
Junior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Ellicott City, MD
Posts: 458
Total Cats: 6
Default



Make sure the cam marks line up correctly like this.
Attached Thumbnails
Timing on newly forged motor!-tbelt7.jpg  
MicaCeli is offline   Reply With Quote
Old 07-17-2013, 05:01 PM   #7
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

Quote:
Originally Posted by claurence42 View Post
Hmmm ok, the yellow notch on the crank is top dead center right? I can take more pictures however I was hoping I did not have to remove the crank pulley.
I honestly was not aware that you could set the timing without pulling the crank pulley to see the "notch" on the timing belt cog.

However, i'll let others help you out on that.
Fireindc is offline   Reply With Quote
Old 07-17-2013, 05:06 PM   #8
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default


Ok I may just pull the crank pulley, but im almost posotive I got it right the cams are perfectly horizontal as well.
Attached Thumbnails
Timing on newly forged motor!-ilt5b09.jpg  
claurence42 is offline   Reply With Quote
Old 07-17-2013, 05:22 PM   #9
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default

Got the crew pulling the crank off. I'll keep you guys updated!!
Thanks!
claurence42 is offline   Reply With Quote
Old 07-17-2013, 05:27 PM   #10
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Quote:
Originally Posted by claurence42 View Post
Hmmm ok, the yellow notch on the crank is top dead center right? I can take more pictures however I was hoping I did not have to remove the crank pulley.
Maybe.

Crank pulleys have been know to deteriorate and slip.

Crank gears aren't always on mark either. Keyways deteriorate and there's even been one instance from a member this year where the the Woodruff key sheared, which means the crank gear wasn't aligned with the crankshaft (he had a supercharger though -- more stress).

Easy way to tell if you can rely on the crank pulley mark is to stick your dipstick into the #1 spark plug hole. You should reach TDC when indicated by the crank pulley mark. Otherwise, something else is off as described above.

Crew? You let someone else work on your Miata?
hornetball is offline   Reply With Quote
Old 07-17-2013, 05:42 PM   #11
Junior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Ellicott City, MD
Posts: 458
Total Cats: 6
Default

You want the little marks on the teeth of the cam gears to lign up with the back cover

Read here...is about the same as your 1.6.

Yeah I stole it from Revlimiter...what of it?

NB Miata timing belt change — revlimiter.net

Attached Thumbnails
Timing on newly forged motor!-dsc_1797-500x308.jpg  
MicaCeli is offline   Reply With Quote
Old 07-17-2013, 05:43 PM   #12
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default

My crew is just my two friends who are helping me out today haha. Thank you Mica I'm working on it now!
claurence42 is offline   Reply With Quote
Old 07-17-2013, 05:53 PM   #13
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

Exactly, I'd just time it off the cog the timing belt goes around. It has a notch you can line up perfectly and go from there.
Fireindc is offline   Reply With Quote
Old 07-17-2013, 06:05 PM   #14
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default





hmmmm
Attached Thumbnails
Timing on newly forged motor!-rz5t5ih.jpg   Timing on newly forged motor!-xusqmwr.jpg  
claurence42 is offline   Reply With Quote
Old 07-17-2013, 06:10 PM   #15
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default

The E and the I are aligned with the backplate its just hard to get a good picture.
claurence42 is offline   Reply With Quote
Old 07-17-2013, 06:34 PM   #16
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

Hard to tell in the pics, but as long as they are aligned you look good to go. 19 teeth between the top marks is right.

What was the problem with the motor? What ECU, injectors, etc ?
Fireindc is offline   Reply With Quote
Old 07-17-2013, 06:43 PM   #17
Newb
Thread Starter
 
Join Date: Jul 2013
Posts: 36
Total Cats: 0
Default

The motor will not turn over if the CAS is on the adjuster, if I remove the CAS from the adjuster and spin it 90 degrees it will fire up and run great. It is a fresh motor with Manley rods, 8.8:1 pistons, and everything replaced haha kind of depressing being so close...
claurence42 is offline   Reply With Quote
Old 07-17-2013, 07:35 PM   #18
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

On a megasquirt? Try messing with the trigger angle is megasquirt settings until it starts, then time it from there.
Fireindc is offline   Reply With Quote
Old 07-17-2013, 07:56 PM   #19
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Hmmm . . . .

90 out.

Hmmm . . . .

Might we have the spark plug wires connected to the wrong coils?

Hmmm . . . .
hornetball is offline   Reply With Quote
Old 07-18-2013, 01:56 PM   #20
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

Quote:
Originally Posted by hornetball View Post
Hmmm . . . .

90 out.

Hmmm . . . .

Might we have the spark plug wires connected to the wrong coils?

Hmmm . . . .
Injectors would have to be wrong too. Something in the ECU settings is 90* off.
Savington is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM
Nuke Mars! Joe Perez Current Events, News, Politics 8 09-30-2015 05:41 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:23 AM.