Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Timing marks 180 degrees out

Thread Tools
 
Search this Thread
 
Old May 29, 2021 | 06:09 PM
  #1  
matwelli's Avatar
matwelli
Thread Starter
AutoX
5 Year Member
 
Joined: Jul 2020
Posts: 13
Likes: 0
Default Timing marks 180 degrees out

Any guess to whats going on here, just about to replace the timing belt... Car runs, guessing somehow the orange plastic band with the timing marks has been taken off and put back on? Also check the third photo, shows the band is also been put on backwards ( note where 45 deg is)

Painted mark at 45 deg btdc, by previous belt change

And this is the crank pulley at 45 deg btdc

This third photo i have rotated the crank to get to the markings.... Notice anything?
Reply
Old May 29, 2021 | 06:16 PM
  #2  
FredR's Avatar
FredR
Rennlist Member
20 Year Member
 
Joined: Jun 2005
Posts: 10,578
Likes: 1,030
From: Oman
Default

The damper is on back to front- look at the markings- they are upside down
Reply
Old May 29, 2021 | 06:18 PM
  #3  
Wisconsin Joe's Avatar
Wisconsin Joe
Nordschleife Master
10 Year Member
 
Joined: Jan 2013
Posts: 5,952
Likes: 325
From: Kaukauna Wisconsin
Default

The harmonic balancer was put on backwards.

No big deal. Make sure you put it on correctly when you put everything back together.

Edit to add: Dog gone it. Fred beat me to it....

By two minutes.

Last edited by Wisconsin Joe; May 29, 2021 at 06:19 PM.
Reply
Old May 29, 2021 | 06:22 PM
  #4  
FredR's Avatar
FredR
Rennlist Member
20 Year Member
 
Joined: Jun 2005
Posts: 10,578
Likes: 1,030
From: Oman
Default

Originally Posted by Wisconsin Joe
The harmonic balancer was put on backwards.

No big deal. Make sure you put it on correctly when you put everything back together.

Edit to add: Dog gone it. Fred beat me to it....

By two minutes.
Team work!
Reply
Old May 29, 2021 | 06:33 PM
  #5  
matwelli's Avatar
matwelli
Thread Starter
AutoX
5 Year Member
 
Joined: Jul 2020
Posts: 13
Likes: 0
Default Have a good hard look at photo 2

Does not explain photo two however gents.
Reply
Old May 29, 2021 | 06:40 PM
  #6  
FredR's Avatar
FredR
Rennlist Member
20 Year Member
 
Joined: Jun 2005
Posts: 10,578
Likes: 1,030
From: Oman
Default

Originally Posted by matwelli
Does not explain photo two however gents.
I take it you understand the balancer is keyed
Reply
Old May 29, 2021 | 06:44 PM
  #7  
matwelli's Avatar
matwelli
Thread Starter
AutoX
5 Year Member
 
Joined: Jul 2020
Posts: 13
Likes: 0
Default

Originally Posted by FredR
I take it you understand the balancer is keyed
Sure do, photo two, the timing marks on the balancer are 180 degrees out from tdc.... They are on the bottom of the pulley in that shot. With the balancer keyed there is no way that could happen. So interested to see what has been done here. Will install the flywheel lock later today and take it off
Reply
Old May 29, 2021 | 07:03 PM
  #8  
Mrmerlin's Avatar
Mrmerlin
Team Owner
20 Year Member
 
Joined: May 2004
Posts: 31,234
Likes: 4,220
From: Philly PA
Default

OK lets start over
when whomever put that crank damper back on they installed it back wards.


NOTE since the cams were already lined up it didnt matter that the damper went on backwards as the engine was properly timed.

That said put the engine at TDC with the cams lined up .
You could also remove the #1 plug, put a piece of hanger wire in through the plug hole and rest it on the piston and verify that the piston is at TDC.
NOTE #1 is first plug on the passenger side.

Remove the crank bolt after installing the flywheel lock.
turn the damper over so you can read the number as you face the engine.

That said if the crank damper wont line up then the damper may have separated from the hub and turned

NOTE the crank will be at TDC when the woodruff keyway is pointing at the 4 O clock position

Last edited by Mrmerlin; May 29, 2021 at 08:28 PM.
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

9 Vehicles Porsche Helped Engineer that Aren't Porsches

 Verdad Gallardo
story-1

9 Features and Characteristics That Only Porsche People Understand

 Verdad Gallardo
story-2

I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

 Joe Kucinski
story-3

10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

 Verdad Gallardo
story-4

Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

 Joe Kucinski
story-5

This Builder Is Turning Heads With Its Slantnose 911 Creation

 Verdad Gallardo
story-6

Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

 Verdad Gallardo
story-7

Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

 Verdad Gallardo
story-8

10 Porsche Colors That Have More Personality Than Most People

 Verdad Gallardo
story-9

Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

 Verdad Gallardo
Old May 29, 2021 | 07:32 PM
  #9  
matwelli's Avatar
matwelli
Thread Starter
AutoX
5 Year Member
 
Joined: Jul 2020
Posts: 13
Likes: 0
Default

All good, i am an idiot, was only the balancer on backwards... In my head i saw two seperate things happening. Need more coffee
Reply
Old May 29, 2021 | 07:37 PM
  #10  
Billu's Avatar
Billu
Pro
 
Joined: Dec 2016
Posts: 532
Likes: 63
From: SW Minnesota
Default

The reason the answer came quickly is that many of us have done the same thing.
You are not an idiot for doing this.
Reply




All times are GMT -3. The time now is 01:10 PM.

story-0
9 Vehicles Porsche Helped Engineer that Aren't Porsches

Slideshow: Long before engineering consulting became trendy, Porsche was quietly helping other automakers build everything from supercars to economy hatchbacks.

By Verdad Gallardo | 2026-05-15 12:44:44


VIEW MORE
story-1
9 Features and Characteristics That Only Porsche People Understand

Slideshow: Some brands build cars. Porsche builds traditions, obsessions, and a few habits that stopped making sense decades ago but somehow became part of the charm.

By Verdad Gallardo | 2026-05-13 18:46:13


VIEW MORE
story-2
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way

Slideshow: Six years and 500 Rennlist articles later, these are the biggest changes at Porsche.

By Joe Kucinski | 2026-05-11 09:52:55


VIEW MORE
story-3
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)

Slideshow: Some Porsches exist for very specific reasons-others feel like they were built just to see if anyone would notice.

By Verdad Gallardo | 2026-05-06 18:00:32


VIEW MORE
story-4
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner

Slideshow: Choosing between the 911 GT3 S/C and 718 Spyder RS in 10 key categories to determine one surprising winner.

By Joe Kucinski | 2026-05-05 12:51:46


VIEW MORE
story-5
This Builder Is Turning Heads With Its Slantnose 911 Creation

Slideshow: A small Polish tuner has reimagined the Porsche 911 Slantnose for the modern era, blending 1980s nostalgia with widebody tuning culture and serious performance upgrades.

By Verdad Gallardo | 2026-05-01 10:49:43


VIEW MORE
story-6
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:37:40


VIEW MORE
story-7
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-8
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-9
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE