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Changing Oil Pump


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#1 a2lt16v

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Posted 05 September 2007 - 10:53 AM

how much of mission is it

do i need to take a lot of stuff of the enigne to get into it

would it be easier to buy a new engine

#2 Big_Adam

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Posted 05 September 2007 - 11:24 AM

Hmmm, would a new engine be easier.

Yes,

Cheaper, C**p no.

You can pull the engine out in a weekend or so (you'll want to leave yourself a few more days if it's you daily driver) a day if you really get stuck in. I got mine out in a day but I made a bit of a hash of it.

One the engines out all you need is a set of spanner and a gasket set. Pull the flywheel cover off, take flywheel off (puller required), undo the studs and bolts behind flyhweel, take off drop housing, then the oil pump is there. 3 bolts and it's off.

Might want to put a new clutch in while your there. One of those "might as well" jobs.

#3 Ethel

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Posted 05 September 2007 - 11:37 AM

You've also got to consider why you want a new pump low oil pressure is likely to be a combination of several things which may or not include the pump.

#4 Big_Adam

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Posted 05 September 2007 - 11:54 AM

You've also got to consider why you want a new pump low oil pressure is likely to be a combination of several things which may or not include the pump.


Ooow, good point Ethel.

*bows down to mighty wealth of knowledge*

#5 a2lt16v

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Posted 05 September 2007 - 12:33 PM

the engine is out that was the easy bit did that last year lol

basically the oil pressure light used to stay on and go off with a quick rev then over time it was on longer and longer and longer till about 4000rpm so i thought right no more and took it out.

i cleaned out the pressure release valve and i also took the head off to see if it was a gasket failure but it wasnt i changed the head for another one and put new gasket in and it was the same.

i can only think its the oil pump or the big ends wore down for some reason to lose the pressure. i toasted my last mini like this i presumed that was the oil pump. I drove that about 25 miles with the oil light on didnt want to stop as it was thundering and raining and i just thought sod it it seized up on my drive which was lucky

#6 Matt

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Posted 05 September 2007 - 12:39 PM

doh....

thats not good...

umm but while the engines out fit a different cam :wacko:

#7 a2lt16v

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Posted 05 September 2007 - 01:02 PM

i thought you had to take the gearbox and everything off to get the cam out last time i pulled a cam out loads of stuff fell down into the engine think it was the followers. or are you ment to do it upside down

Edited by a2lt16v, 05 September 2007 - 01:03 PM.


#8 Big_Adam

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Posted 05 September 2007 - 02:28 PM

With a 1275 engine then the followers will fall with no cam so you need to put the engine upsidown. With a 998 you can pop the followers out the tappet chest.

edit

Although you are "suppose" to fit new followers with a new cam.

Edited by Big_Adam, 05 September 2007 - 02:28 PM.


#9 a2lt16v

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Posted 05 September 2007 - 02:45 PM

god they made it so complicated. might just splash out on a vaux frame would be easier than taking the dirty dribbly mini engine apart

#10 Big_Adam

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Posted 05 September 2007 - 03:12 PM

easier than taking the dirty dribbly mini engine apart


The mini engine is as simple as pie and chips! How would fitting a more complex (therfore silly) engine help? It's one part.

*grumbles alot*

*grumbles about silly modern cars with injectors and part that work via witch craft and magic*

#11 Phaeton

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Posted 05 September 2007 - 03:54 PM

If the oil light did go off even at 4k then chances are it's not the oil pump at fault, it's more likely to be the big end shells. If it's already out strip it, put new bigs & mains in, fit a new pump at same time.

Alan...

#12 a2lt16v

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Posted 05 September 2007 - 04:06 PM

i bought a 1275 gt engine took the cam out of that and all the followers fell out so i chucked the whole thing in the bin as it annoyed me. just like the over head cam as you can do stuff at the top with out having to take the whole engine apart into tiny peices :wacko:

#13 Big_Adam

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Posted 05 September 2007 - 05:02 PM

You chucked a 1275 engine beacuse the followers fell out?

A mini engine really doesn't have that many part. The gearbox is the most complex bit and for that you have a few good forum followers who can sort them out. The engine itself is easy to work with.

#14 a2lt16v

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Posted 05 September 2007 - 07:20 PM

well i bought a load of mini stuff for £50 about 4 engines and some heads and panels and wiper motors loads of stuff and this was a meant to be a good engine but i was just fed up with it so kept the head as it had big valves and double springs and chucked the rest had no room. filled a polo up with it and weighed it in at the scrappy and got good money lol

mini engined seem so cheap to pic up nowadays i bought a 998 for £20 and used that for a year




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