Motor reassembly. - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 06-23-2010, 12:46 AM   #1
Elite Member
Thread Starter
iTrader: (5)
 
pusha's Avatar
 
Join Date: Nov 2009
Location: Miami, FL
Posts: 7,363
Total Cats: -32
Default Motor reassembly.

I'm reassembling my 1.6 after discovering my last head was no good, after having the motor out of the car for almost four months. Now I've begun the task of getting all my timing components lined up.

I did a little bit of reading and found that on 1989-93 Miatas there is a white mark indicating top dead center. My pulley thing doesn't have this mark. Are there any alternatives to finding TDC other than just getting it (visually) close? Where would the white mark line up with if it was actually there? Am I screwed?

I don't want to ruin my **** after investing this much time and money, my car has been down almost a year. If anyone has a solution to this problem or advice on putting this thing back together as I've never done it before, I'd be eternally grateful. Thanks in advance.
pusha is offline   Reply With Quote
Old 06-23-2010, 12:47 AM   #2
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

There could just be a small notch without a white mark.
Bryce is offline   Reply With Quote
Old 06-23-2010, 12:49 AM   #3
Elite Member
Thread Starter
iTrader: (5)
 
pusha's Avatar
 
Join Date: Nov 2009
Location: Miami, FL
Posts: 7,363
Total Cats: -32
Default

Quote:
Originally Posted by Bryce View Post
There could just be a small notch without a white mark.
Yes, I believe I've found this. Where would it line up? Around what I believe to be TDC, it's like halfway between the 10 and the T on the little timing gauge thingamajig.
pusha is offline   Reply With Quote
Old 06-23-2010, 12:51 AM   #4
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

It should point to the T, which happens to signify top dead center. If it doesn't, your harmonic damper may have slipped and needs replacement. That has happened to me before.
Bryce is offline   Reply With Quote
Old 06-23-2010, 12:51 AM   #5
Elite Member
Thread Starter
iTrader: (5)
 
pusha's Avatar
 
Join Date: Nov 2009
Location: Miami, FL
Posts: 7,363
Total Cats: -32
Default

I'll have to look again tomorrow.
pusha is offline   Reply With Quote
Old 06-23-2010, 12:52 AM   #6
Elite Member
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

While you're at it, I'd color the notch with a white paint marker to make it easier to see.

Interesting story regarding that, I once made a whopping 138whp at 12psi with my greddy due to a slipped harmonic balancer.
Bryce is offline   Reply With Quote
Old 06-23-2010, 12:55 AM   #7
Elite Member
Thread Starter
iTrader: (5)
 
pusha's Avatar
 
Join Date: Nov 2009
Location: Miami, FL
Posts: 7,363
Total Cats: -32
Default

Quote:
Originally Posted by Bryce View Post
While you're at it, I'd color the notch with a white paint marker to make it easier to see.

Interesting story regarding that, I once made a whopping 138whp at 12psi with my greddy due to a slipped harmonic balancer.
Yeah, I'll make for damn sure to mark that thing once I get it figured out. However, I do remember a bit of white residue (which I thought was silicone or something) a little to the left of the notch on the damper. Is it the notch on the damper that is marked with white or ?
pusha is offline   Reply With Quote
Old 06-23-2010, 09:16 AM   #8
Elite Member
iTrader: (2)
 
fooger03's Avatar
 
Join Date: Jan 2009
Location: Columbus, OH
Posts: 4,133
Total Cats: 188
Default

the notch is what you're looking for. the factory put the notch in and possibly colored it white, the factory didnt make a white mark to one side of the notch or the other. You'll want to put white paint marker either on the notch, or you can put it near the notch to make it easy to find (as it sounds like a PO did). If you're unsure about what the notch looks like, find a buddy's miata, start it up, and use a timing light. You'll instantly see exactly what the notch looks like.

It should line up at "T" when TDC.

When Idling and using a timing light, it should line up with "10" which signifies 10* BTDC
fooger03 is offline   Reply With Quote
Old 06-23-2010, 09:39 AM   #9
Senior Member
iTrader: (2)
 
Join Date: Sep 2008
Location: ON
Posts: 523
Total Cats: 2
Default

Sounds like you have it but, the only other way ever suggested to me to (in an all else fails situation) is to put the dipstick in the spark plug hole and watch it as you turn the crank.
inferno94 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
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
Advanced Engine Dynamix Review (dead oil pump content) itsMikey Insert BS here 0 09-05-2015 03:56 PM


Thread Tools

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 05:23 AM.