difference between an A+ and A series engine

[Biggles]

G'day,
        me again. the question has come up a couple of times about A+ engines
So i thought i'd post a couple of pics of the basic differences between the two.
these engines came out in later minis and mokes.
  the first pic is an A+ block note the criss cross ribs cast in the block for extra
strength its the same on the back. also note the dizzy hole and the retaining
clamp bolt hole on the dip stick tube point. theses are the obvious differences



the next pic shows a normal block for comparison



The other difference is the timing covers. the A= ones are a different shape as
they in clude timing chain tensioner which isn,t present in the a series engines.
they usually have some extra bits on them to do with sensors and timing for the
english fuel injected versions. Also 1275 ones have a breather canister on them.



fianally the different dizzys the A+ is held into the block differently and also has
a different drive.  sorry for the dark pics

[Pete Power]

Thankyou Smoken that was very informative and interesting.

[77Devil]

Thankyou Smoken that was very informative and interesting.

Dito Smokey
These are all facts that help to know what we are talking about.

And help with making up the 80%

Cheers

Dev

[Newie]

Good on you Smokey.

An informative series of tutorials you've got going here 

Hope I can find them again if I need them one day.

Newie

[casper]

So that means I have a A series

Could you tell me anything about my head, as to the bolts across the front?



Casper

[moke]

So that means I have a A series

Could you tell me anything about my head, as to the bolts across the front?



Casper

These are to do with the emission system fitted to some models in the past. You would of seen pipes  screwed into those bolt holes.
Dean

[Tim]

Could you tell me anything about my head, as to the bolts across the front?

You are probably a robot.

Tim

[casper]

Hmmm, I was waiting for that!

Do these heads differ in compression rating to others?

Casper with the Q's

[Terry]

Hi,

Another quick way to identify the A+ from the A block is to look at the two holes where the Alternator/Coil bracket mounts. On an A engine the  bolts holes are between 2 and 3 and on a A+ they are between 1 & 2 and it uses a smaller bracket.

You can see it clearly in Casper's photo and then go up and check Smokens' images

Terry

[Biggles]

G'day Casper,
                 I know you've already got your motor back in.
But if you ever have to change a head gasket, cut the bolt
heads off and grind them back. that way when its painted
you don't see them and it doesn't look like something is missing
specially at rego time. Also throw that double fan pully away.

                     smokey

[Newie]

Just in case you're interested Casper, here's a pic of mine with all the pipework. Which do you prefer? 



Newie

[moemoke]

How come Casper has the timing marks on the bottom pulley?

[Maddog]

Another trap for young players is the different dipstick tubes between the A and A+. The A has a short plastic tube the stick sits in, whereas the A+ sits directly in the block. The sticks are the same, but don't try running either the A without the tube or the A+ with the tube.

MD.

[casper]

But if you ever have to change a head gasket, cut the bolt
heads off and grind them back. that way when its painted
you don't see them and it doesn't look like something is missing
specially at rego time.

                     smokey

Nice tip smokey, I'll do that.

Also throw that double fan pully away.

But its the only one Ive got!

Newie...there is an engine in there? 

Casper

[Biggles]

G'day Caspy,
                 guess what?
when do you want it?

             smokester