1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Help with lining everything up for first time crank

Thread Tools
 
Search this Thread
 
Old Nov 28, 2011 | 10:50 AM
  #1  
dr.occa's Avatar
Thread Starter
Wankeled 86
iTrader: (3)
 
Joined: May 2010
Posts: 161
Likes: 0
From: Houston, TX
TX Help with lining everything up for first time crank

I've got a 12A and the water pump/fan, alt and crank pulleys were off. Now I'm in the process of turning the motor over for the first time.

How should the crank pulley be installed on so I know the correct point at which the motor is at TDC? There's a little notch on the inner ring of the x-centric shift "inner pulley(?)"; what does that indicate? Here's a picture of what I'm talking about:


Does that "notch out" determine how the pulley should be bolted up to the shaft?

This is my first rotary motor experience. I've been referring to the FSM but none of the instructions or pictures are helping. The motor is already in the furnace and the radiator is installed and full of coolant so it'll be very difficult for me to get to the shaft bolt to remove it. The motor is in a corolla by-the-way and there's not much space between the rad and the crank pulley.

I'd appreciate any useful advice/guidance. Thanks in advance.

doc
Reply
Old Nov 28, 2011 | 03:58 PM
  #2  
Opeth1stgen's Avatar
Bridgeport 12a
Tenured Member 05 Years
iTrader: (3)
 
Joined: Nov 2010
Posts: 96
Likes: 3
From: Berryville, VA
The notch on the inside of the e shaft pulley is the key way for a woodruff key that is on the eccentric shaft itself, so the pulley only goes on one way. I can't tell from your post if the e shaft pulley is off the engine or if you are planning on replacing the e shaft pulley, either way you need to be aware of the bearings that are behind the front cover, the link below will explain what Im talking about.

http://www.mazdatrix.com/faq/pulley.htm
Reply
Old Nov 29, 2011 | 03:26 PM
  #3  
dr.occa's Avatar
Thread Starter
Wankeled 86
iTrader: (3)
 
Joined: May 2010
Posts: 161
Likes: 0
From: Houston, TX
Sorry for the confusion.

It's the belt pulley that I just want to mount back on properly so I can properly line up the lead and trail timing marks. I'm just wanting to stab the distributor in properly.
Reply
Old Dec 2, 2011 | 07:03 AM
  #4  
dr.occa's Avatar
Thread Starter
Wankeled 86
iTrader: (3)
 
Joined: May 2010
Posts: 161
Likes: 0
From: Houston, TX
Quick update:

I had checked everything out a couple of days ago and it all did line up: with the flat portion of the flywheel parallel to the exhaust flange, the distributor rotor did line up with L1. I did some more discovery and found that both the accel coils that came with the engine were either bad or possibly the incorrect type (maybe the internal resistor type for points?). When I tested the trailing coil (MSD Blaster Coil 2), that checked out to be in working order.

I'm going to double-check my DLIDFIS wiring for the leads just to be sure.
Reply
Old Dec 5, 2011 | 07:10 AM
  #5  
dr.occa's Avatar
Thread Starter
Wankeled 86
iTrader: (3)
 
Joined: May 2010
Posts: 161
Likes: 0
From: Houston, TX
Quick update: Found the problem with the DLIDFIS setup - the "vertical" male/spade connector of the lead pickup connection on the dizzy was bent slightly enough that when I connected the 2 wire connector it would just miss to the side of the connector housing. I couldn't see this becase the rubber boot over the connector was hiding this fact. Lead and trailing coils are all firing properly now after straightening out that spade connector. I also noticed that this time there was a bit more noticeable resistance when slipping the connector on. I confirmed spark.

Thought I'd share for those interested.
Reply
Old Dec 5, 2011 | 10:54 AM
  #6  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
ive done that too! on the timing front, worst case there are 4 ways the pulley goes on, so worst case you try it 4 times....
Reply
Old Dec 5, 2011 | 03:52 PM
  #7  
dr.occa's Avatar
Thread Starter
Wankeled 86
iTrader: (3)
 
Joined: May 2010
Posts: 161
Likes: 0
From: Houston, TX
Originally Posted by j9fd3s
ive done that too! on the timing front, worst case there are 4 ways the pulley goes on, so worst case you try it 4 times....
This is true

I'm anxious to get home and fire her up. If I can just make certain the motor will run steadily and "dependably" with how I've got everything wired in and take care of any leaks, the rest will be a walk in the park.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
PhillyFC
General Rotary Tech Support
9
Aug 21, 2015 06:36 PM
befarrer
2nd Generation Specific (1986-1992)
4
Aug 14, 2015 04:18 PM




All times are GMT -5. The time now is 03:54 AM.