2.25 diesel dramas

[relick62au]

Hi All,
I finally decided to take out the pistons and rods after doing valve stem seals failed to fix the blue smoke blowing and irregular miss. OK so now the drama is with the pistons, when I pulled them out no. 1 (front) had a broken ring which I was happy with because in my ignorance I was thinking, "great, new rings job done"!!
Problem 1, the rings have an allowable side gap of .06 to .011mm, the top ones are by far the worst, mine range from .33 to .66. According to the local engine re-builders thats throw away material.
So seeing as I don't have the budget for a re-bore etc I am thinking options. The bores all seem quite good, no scoring and I have not done it before (measured bore with inside micrometre) but they seem very close to the orginal spec of 90.488mm. What happens if I throw in a new set of standard pistons and rings (about $500) and conrod bearings.
Problem 2. Pistons 2,3 and 4 have what looks like melt/heat effects on the side where the injectors are right at the bottom of the V, whats doing this as it is pretty bad in a couple of them.
I do have another running diesel I have just acquired in a rusty series 3 lwb, so another option is to swap that in but it is an unknown quantity.
Sorry for the long story, any advice would be appreciated.
Russell.

[lro11]

Russell,
check your head for cracks between the valve seats. The 2.25 heads are prone to cracking and water getting into the combustion chamber can erode the top of the pistons. Look at getting your pistons and rings from the UK.

[Blknight.aus]

you can just bottle brush hone the bores to clean them up then ring them to suit.

if your near enough to a stop on my xmas run and get my attention early enough, I'll chuck the engine measuring gear in the tool box and we can give it a decent look see if you like.

I'll call lunch time wednesday the cut time as I may not get the message in time to pack the tools if its after that.

[isuzurover]

When I built my last 2.25, a rebore was cheap compared to pistons and rings.

I would see if I could get pistons cheap enough to justify the rebore.

... here you go!
RTC419140 DIESEL PISTON 040 | shop | www.lrseries.com | L. R. Series

[chazza]

Try this:

- Engine

Cheers Charlie

[relick62au]

Hi Blknight,

Thanx, if your trip includes Cairns Kuranda it would be very much appreciated.

Russell.

[Blknight.aus]

just googled it, Sorry mate 370K+ one way is too big a chunk out of the time budget without a SWMBO approval.

I'll check but dont hold your breath.

As always Im happy to help out with diagnoses online or over the phone.


IF you happen to be coming down to townsville since I'll be working on a house Im happy to catchup with you then

http://www.aulro.com/afvb/aulro-cour...e-tsv-rtn.html

that thread links to the route and approximate timings.

[relick62au]

Thanks again Dave,

At this point I am desperate enough for good info to throw it on a trailer and drag it down to Townsville for your appraisel!!

Russell.

[Blknight.aus]

Ive sent you a PM with the phone numbers to get me on when I get up there.

In the mean time lots of digital photos will help with a pre-appraisal.

the email addy is myAULROnick@gmail.com