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InternationalDBA



Member Since: 18 Feb 2018
Location: West Sussex
Posts: 21
United Kingdom 2008 Defender 110 Puma 2.4 SW Stornoway Grey
Puma 2.4 Piston Removal
I have a Puma 2.4 engine in a 2008 Defender with 150,000+ miles.
I believe it has small end failure so I am trying to remove the pistons.
Has anybody done this with the engine in place?
That is what I am trying to do but the lower crankcase is stuck to the block and I cannot get it off.
Any ideas?
Post #773864 19th May 2019 12:52pm
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 359
South Africa 2007 Defender 110 300 Tdi SW Chawton White
You have to remove the bolts/nuts on the big end bearings to remove the piston.

So the sump must come off.
Post #774194 21st May 2019 10:19am
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InternationalDBA



Member Since: 18 Feb 2018
Location: West Sussex
Posts: 21
United Kingdom 2008 Defender 110 Puma 2.4 SW Stornoway Grey
Yes, I know that.
I rebuilt a Morris Marina engine with the same problem in 1986.
The problem with the Puma 2.4 is that it has a 2" deep lower crankcase which will not come off.
This is a Ford Transit engine and I have just read on a Transit forum that there is an extra bolt behind the flywheel holding the lower crankcase in place so I have to take the engine out.
I will let you know how I get on.
Post #774991 26th May 2019 6:42am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2301
Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
How annoying! > 110 XS Double Cab
Post #774993 26th May 2019 6:46am
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 359
South Africa 2007 Defender 110 300 Tdi SW Chawton White
I hate it when they do that.
Post #774994 26th May 2019 6:47am
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Roy5695



Member Since: 15 Feb 2014
Location: Cornwall
Posts: 1123
United Kingdom 2011 Defender 110 Puma 2.2 XS DCPU Indus Silver
Removing the gearbox isn’t a hard job. You’d need this off and the flywheel to fit a new rear crank seal when you’ve finished anyways. 2011 Defender DCPU 2.2 - https://www.defender2.net/forum/topic30623.html

Instagram - @r22oyp

Roy
Post #774997 26th May 2019 7:10am
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Puma22



Member Since: 22 Jun 2022
Location: North Yorkshire
Posts: 29
United Kingdom 
InternationalDBA wrote:
Yes, I know that.
I rebuilt a Morris Marina engine with the same problem in 1986.
The problem with the Puma 2.4 is that it has a 2" deep lower crankcase which will not come off.
This is a Ford Transit engine and I have just read on a Transit forum that there is an extra bolt behind the flywheel holding the lower crankcase in place so I have to take the engine out.
I will let you know how I get on.


Hi, I appreciate this is an old thread. But did you remove the engine or were you able to get the lower crank off? - I have a cracked piston, but it’s on low miles, so replacing the crank gasket/bears is not my concern.
Post #959073 21st Jul 2022 5:49am
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