Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

where does the mark on the flywheel have to be

 
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech.
View previous topic :: View next topic  
Author Message
scotthusky89  



Joined: 13 Jul 2007
Posts: 78
Location: south wales uk

PostPosted: Thu Aug 09, 2007 7:15 am    Post subject: where does the mark on the flywheel have to be Reply with quote

as it says the mark on the flywheel smoothie says theres a mark on the flywheel its z1 or 1z and a line so can anyone help me i know that when the engine is at TDC piston 1 that is what on the flywheel has to be in view in the flywheel sensor hole because im having problem starting the car i checked everything and from petrol and spark , i found out that i had no feul pressure and found the in tank pump was not working so got a new one then found injectors was brokeso they are new then new plugs cap and leads but after all that still no start but thanks to smoothie he informed me about the crank sensor and the mark on the flywheel but i need to know what as to be at top dead centre so all help will be appreicated
_________________
hi everyone nice to see and talk and hear from u

82 924turbo s2 english rhd verson
Back to top
View user's profile Send private message AIM Address MSN Messenger
scottc  



Joined: 26 Mar 2007
Posts: 159
Location: Manilva, Malaga, Spain

PostPosted: Thu Aug 09, 2007 8:17 am    Post subject: Reply with quote

There's 3 marks on the flywheel as you rotate it. 1st is 10 degrees BTDC. 2nd is TDC, 3rd is 10 degrees ATDC.

For Engine timing, ie time belt, use the 2nd, middle, mark.

For Ignition timing, ie distributor position, you need to use the 1st mark, ie 10 degrees before Top Dead Centre.
Back to top
View user's profile Send private message
Buwani 931  



Joined: 31 May 2004
Posts: 308
Location: Napa California

PostPosted: Thu Aug 09, 2007 10:46 am    Post subject: Reply with quote

I think the Z1 mark is correct for TDC on the turbo. Might make a difference on year or side of the pond but my TDC is Z1.

Shawn
_________________
1980 931
That's thirty minutes away. I'll be there in ten.
Back to top
View user's profile Send private message
Rich H  



Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK

PostPosted: Thu Aug 09, 2007 7:48 pm    Post subject: Reply with quote

+10, 0 and -10 are the timing marks on the Euro NA.
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec
Back to top
View user's profile Send private message
scotthusky89  



Joined: 13 Jul 2007
Posts: 78
Location: south wales uk

PostPosted: Fri Aug 10, 2007 3:49 am    Post subject: Reply with quote

right what it is that the engine builder put the flywheel back on my turbo not knowing of the crank sensor so everything runs but i dont think its timed right because the car will try to fire but it wont stay running so i think the flywheel is on wrong so i need to know when the car piston one is at TDC and for the car to fire ,

meaning when u turn the car over to start it and the flywheel turns and the sensor has to pick up the mark on the flywheel for the first piston 1 to fire and so on what has to be in view when the car piston 1 is at TDC ready to fire is it the z1 mark or 10dergress before or after that mark
_________________
hi everyone nice to see and talk and hear from u

82 924turbo s2 english rhd verson
Back to top
View user's profile Send private message AIM Address MSN Messenger
Smoothie  



Joined: 01 Jan 2003
Posts: 8030
Location: DE (the one near MD, PA, NJ)

PostPosted: Fri Aug 10, 2007 12:16 pm    Post subject: Reply with quote

One mo' time -
Z1 is TDC for cyl 1. With that lined-up in the window, now look at the front of the engine...you should find a small notch on the crank pulley lining up with a pointer on the oil pump. These two (Z1 in the window and pulley notch at front) lining-up at the same time tell you that the flywheel is on correctly.
This is showing the crank pulley tdc mark and the oil pump pointer as viewed from above -


How're you doing with that quest for a Haynes manual?
_________________
"..it's made in Germany. You know the Germans always make good stuff."


'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox
Back to top
View user's profile Send private message Visit poster's website
scotthusky89  



Joined: 13 Jul 2007
Posts: 78
Location: south wales uk

PostPosted: Fri Aug 10, 2007 6:24 pm    Post subject: Reply with quote

bloody hard trying to get hold of a decent copy of the hanues manuel in this country and im still trying but cheers for all the help lads i know ive been a pain but thanks all the same
_________________
hi everyone nice to see and talk and hear from u

82 924turbo s2 english rhd verson
Back to top
View user's profile Send private message AIM Address MSN Messenger
Rich H  



Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK

PostPosted: Fri Aug 10, 2007 6:32 pm    Post subject: Reply with quote

There isn't a decent copy they are all full of rubbish...

There are usually some UK-Flea-bay
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec
Back to top
View user's profile Send private message
Buwani 931  



Joined: 31 May 2004
Posts: 308
Location: Napa California

PostPosted: Sat Aug 11, 2007 7:50 am    Post subject: Reply with quote

scotthusky89 wrote:
bloody hard trying to get hold of a decent copy of the hanues manuel in this country and im still trying but cheers for all the help lads i know ive been a pain but thanks all the same


There was a post a couple of weeks ago about Haynes manual on line. That might help till you find a copy that you can get all greasy.

Shawn
_________________
1980 931
That's thirty minutes away. I'll be there in ten.
Back to top
View user's profile Send private message
scottc  



Joined: 26 Mar 2007
Posts: 159
Location: Manilva, Malaga, Spain

PostPosted: Sun Aug 12, 2007 2:48 am    Post subject: Reply with quote

Scott, as you've got a cool name, I'll point you towards http://www.geocities.com/eturbo924/Haynes.html
Back to top
View user's profile Send private message
scotthusky89  



Joined: 13 Jul 2007
Posts: 78
Location: south wales uk

PostPosted: Wed Aug 15, 2007 3:25 am    Post subject: Reply with quote

u know what guys u are the best u have helped me out so much although ive been a constant pain but i can now get on with changing the flywheel to get it right and hear her start seems as i bought the car2 years ago as a project and last to do was the engine and new interior but putting the engine in and starting it but found out this problem so this is last to do know and then put the car on the road cheers
lads

let u know how i get off
_________________
hi everyone nice to see and talk and hear from u

82 924turbo s2 english rhd verson
Back to top
View user's profile Send private message AIM Address MSN Messenger
murphys  



Joined: 02 Aug 2007
Posts: 5
Location: Central Coast California

PostPosted: Fri Sep 28, 2007 10:21 am    Post subject: where does the mark on the flywheel have to be Reply with quote

OK, I am a dumb s**t, where is "the window?" So I can see the marks.
Back to top
View user's profile Send private message Yahoo Messenger
scotthusky89  



Joined: 13 Jul 2007
Posts: 78
Location: south wales uk

PostPosted: Sat Sep 29, 2007 3:13 am    Post subject: Reply with quote

hi the mark u are looking for i mean the window is as u are looking at the engine from the front towards the rear of the engine looking from above on the right hand side ull find the engine crank sensor which is at the top of the bell housing just in line under the cold start valve its a square window on the bell housing u will need a light source

if u need any help just contact again plus on this site there should be photo links showing the window as well
cheers scott
_________________
hi everyone nice to see and talk and hear from u

82 924turbo s2 english rhd verson
Back to top
View user's profile Send private message AIM Address MSN Messenger
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech. All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group