Mini Cooper cylinder number and firing order
#1
Mini Cooper cylinder number and firing order
Since it seems to be difficult to find this information anywhere in these forums, I wanted to start a thread with this title to help those of us who are still uncertain!
I'm working on an engine rebuild for my daughter's R56.
Based on what I have seen, the cylinder numbers start from the timing chain side with 1-2-3-4. Is this correct?
I'm not sure about the firing order either but I know it's not 1-2-3-4!
Can several people confirm both of these please? For me and for others in the future?
Thanks!
I'm working on an engine rebuild for my daughter's R56.
Based on what I have seen, the cylinder numbers start from the timing chain side with 1-2-3-4. Is this correct?
I'm not sure about the firing order either but I know it's not 1-2-3-4!
Can several people confirm both of these please? For me and for others in the future?
Thanks!
#2
Since it seems to be difficult to find this information anywhere in these forums, I wanted to start a thread with this title to help those of us who are still uncertain!
I'm working on an engine rebuild for my daughter's R56.
Based on what I have seen, the cylinder numbers start from the timing chain side with 1-2-3-4. Is this correct?
I'm not sure about the firing order either but I know it's not 1-2-3-4!
Can several people confirm both of these please? For me and for others in the future?
Thanks!
I'm working on an engine rebuild for my daughter's R56.
Based on what I have seen, the cylinder numbers start from the timing chain side with 1-2-3-4. Is this correct?
I'm not sure about the firing order either but I know it's not 1-2-3-4!
Can several people confirm both of these please? For me and for others in the future?
Thanks!
Usually, 4-cylinder engines have a firing order of 1-3-4-2
#3
^Correct, double checked it in the Bentley manual. It would be tough to get the plugs connected wrong, though - not like the old days with a distributor and plug wires.
#4
#6
I think you meant to say 1&3 move in pair and 4&2 move in pair. When I pull open the heads and turn the crank I when flywheel is at 0 or 180 position, 1,3 are same height, then 4,2 are same height.
#7
This is posted in a 2nd gen R56 section.. so you should be talking about an N14 or an N18. Both of these are flat plane crank engines and as such move the 1/4 then 2/3 pistons. Look up any 'google' image of a "N14 block" or N18 and you will see exactly what i mean.
Last edited by cornjuice; 10-09-2018 at 11:06 AM.
Trending Topics
#8
No i meant what i said and said what i meant. This is posted in a 2nd gen R56 section.. so you should be talking about an N14 or an N18. Both of these are flat plane crank engines and as such fire the 1/4 then 2/3 pistons. Never has there been a different order for these motors. Look up any 'google' image of a "N14 block" or N18 and you will see exactly what i mean.
Flat plane cranks dont fire 1 piston at a time.. ever.
Flat plane cranks dont fire 1 piston at a time.. ever.
#9
flat-plane 4cyl crank = 2 cylinders move at the same time & order is 1&4, 2&3 ..this goes for ALL N14 and N18 motor & N12
*Flat-plane cranks are by nature balanced better and can rev higher as result. A crossplane crank WOULD have a 1,3,4,2 order and fire at 90 degree crank intervals by comparison (1 piston/cyl at a time).
*Flat-plane cranks are by nature balanced better and can rev higher as result. A crossplane crank WOULD have a 1,3,4,2 order and fire at 90 degree crank intervals by comparison (1 piston/cyl at a time).
Last edited by cornjuice; 10-09-2018 at 11:04 AM.
#10
no shortage of weird about French motors
Last edited by cornjuice; 10-09-2018 at 11:05 AM.
#11
Um....
As stated, the correct firing order is 1-3-4-2. Yes, the N14/N18 is a flat plane engine (most 4 cylinders are). That means that 1/4 and 2/3 are at the same physical location, but their cycles are 180 degrees offset. That means when cylinder 1 is on an intake stroke, cylinder 4 is on a power stroke. The two pistons don't fire at the same time. If they did, the engine would "lope" like a Harley.
The proof is in the camshaft. The lobes for 1/4 are 180 degrees apart. They are 90 degrees offset from 2/3.
As stated, the correct firing order is 1-3-4-2. Yes, the N14/N18 is a flat plane engine (most 4 cylinders are). That means that 1/4 and 2/3 are at the same physical location, but their cycles are 180 degrees offset. That means when cylinder 1 is on an intake stroke, cylinder 4 is on a power stroke. The two pistons don't fire at the same time. If they did, the engine would "lope" like a Harley.
The proof is in the camshaft. The lobes for 1/4 are 180 degrees apart. They are 90 degrees offset from 2/3.
#15
Timing Chain on Passenger Side of my R56
You are correct. The timing chain on my R56 is on the passenger side of the car. If I am looking under the hood facing the front of the vehicle, it is on the left hand side.
Thread
Thread Starter
Forum
Replies
Last Post
slipmagt
R50/R53 :: Hatch Talk (2002-2006)
12
06-11-2018 11:35 AM
Legates01
R60/R61 Stock Problems/Issues
4
08-24-2017 06:13 PM
flyboy2160
Stock Problems/Issues
0
05-27-2010 06:40 AM