Welcome to the Irish Mini Owners Club Forum. Celebrating 30 years of the Irish Mini Owners Club, 60 years of the Mini, 55 years of the Moke and 50 years of the Clubman

Finding tdc

This section is for Mini projects and restorations and also the place to show off your pride and joy.

Moderators: irishminis, spud1979, The Marcos Graveyard, Moderators

Post Reply
mcgrattan17
NON Member
Posts: 8
Joined: Tue May 21, 2019 4:32 pm
Whats your location?: Dublin
Region: Eastern
What Minis have you?: Mayfair 1275 Automatic
Contact:

Finding tdc

Post by mcgrattan17 » Sun Jun 16, 2019 2:27 pm

Hi guys I fit a new electric dizzy and ballast coil to my 1275 engine, I’m not sure if it is at Tdc at the moment is there any quick way of finding out if it is or setting it to Tdc that I could do at home? Or would it cause a lot of damage to try turn it over as it is at the moment so long as it is set that it will send a spark to cylinder 1 at the moment. Thanks a million



User avatar
woody
IMOC Paid Member
Posts: 2652
Joined: Mon Feb 07, 2005 11:55 pm
Whats your location?: Drogheda
Region: Eastern
What Minis have you?: Traveller
Turbo
Hornet
Equinox
MINI Clubman
Location: LOUTH
Contact:

Re: Finding tdc

Post by woody » Mon Jun 17, 2019 8:55 pm

Depending on the type of engine A or A+ the timing marks will either be on the flywheel or pulley wheel. There are two TDC in the cycle of a fore stroke engine and it is important when setting timing that number one cylinder is at TDC after the inlet valve has closed.
TECHNICAL MODERATOR

mcgrattan17
NON Member
Posts: 8
Joined: Tue May 21, 2019 4:32 pm
Whats your location?: Dublin
Region: Eastern
What Minis have you?: Mayfair 1275 Automatic
Contact:

Re: Finding tdc

Post by mcgrattan17 » Tue Jun 18, 2019 10:31 am

Hi so the marks are on the wheel and not on the belt? The engine starts now that I’ve changed the distributor but I won’t drive it until it’s timed properly

User avatar
woody
IMOC Paid Member
Posts: 2652
Joined: Mon Feb 07, 2005 11:55 pm
Whats your location?: Drogheda
Region: Eastern
What Minis have you?: Traveller
Turbo
Hornet
Equinox
MINI Clubman
Location: LOUTH
Contact:

Re: Finding tdc

Post by woody » Tue Jun 18, 2019 5:39 pm

The belt on a mini is only a fan belt not a timing belt, minis have timing chains.
The fact that it starts means that it is not too far out and should be easy to time in with a timing gun.
TECHNICAL MODERATOR

mcgrattan17
NON Member
Posts: 8
Joined: Tue May 21, 2019 4:32 pm
Whats your location?: Dublin
Region: Eastern
What Minis have you?: Mayfair 1275 Automatic
Contact:

Re: Finding tdc

Post by mcgrattan17 » Tue Jun 18, 2019 10:16 pm

Yeah but are the timing marks on the actual puppy? One of the guys in work is going to look at it on Friday for me and get it timed. I’m just looking forward to getting it going and out on the road. I’ll keep you posted thanks a million

User avatar
woody
IMOC Paid Member
Posts: 2652
Joined: Mon Feb 07, 2005 11:55 pm
Whats your location?: Drogheda
Region: Eastern
What Minis have you?: Traveller
Turbo
Hornet
Equinox
MINI Clubman
Location: LOUTH
Contact:

Re: Finding tdc

Post by woody » Tue Jun 18, 2019 11:40 pm

Like I said in my first post ,it depends on which engine type.
If its the original engine in the car tell me the year and model or even post a picture of the engine.
TECHNICAL MODERATOR

mcgrattan17
NON Member
Posts: 8
Joined: Tue May 21, 2019 4:32 pm
Whats your location?: Dublin
Region: Eastern
What Minis have you?: Mayfair 1275 Automatic
Contact:

Re: Finding tdc

Post by mcgrattan17 » Wed Jun 19, 2019 7:52 pm

Ok thanks I’ll put a picture up tomorrow it’s parked in the fire station at the moment. It’s registered as a 998 but it’s an orange engine and I looked up the plate on the engine and it says it’s a 1275

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 3 guests