Thanks again to the replies - there certainly seems to be some differences
of opinions - but the people on this forum seems to be in agreement.
Dave M wrote:<<replace the rods BEFORE they bend>>.
This option seems to be the best of all worlds - next question -- how do you
determone if the rods have/have not started bending without pulling the head
and check the cylinders for ovality and perhaps the oil pan to check the con
rods? Which sounds like you'd be pretty far along to completely
disassembling the engine for a rebuild.
Would oil consumption be the symptom to indicate the rods have not bent? Or
is this something where you buy the car with the thought of fixing whatever
you find?
I guess this kind of scenario needs to get into the negotiations when a car
is found - certainly would seem to be a tricky situation --
TIA -
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
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----- Original Message -----
From: "Dave M." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, April 26, 2006 2:33 PM
Subject: Re: [MBZ] Saving a W140 Rodbender
Larry,
Short answer - the note on the other forum was wrong. With a bent-rod
3.5L engine, you have basically 2 viable options:
1) Replace the engine with a factory 3.5L crate motor (long or short
block)
2) Replace the engine with a 3.0L from a 1986/87 300D/TD/SDL.
If the 3.5L engine still has round cylinders and no oil consumption,
you have a third option... replace the rods BEFORE they bend. Kinda
spendy ($1200+ in parts, plus labor) but far cheaper than a new motor.
Putting a 617 into a W140 is just silly, IMO.
:)
-dm
------------------------------
Date: Wed, 26 Apr 2006 11:52:43 -0400
From: <[EMAIL PROTECTED]>
Subject: [MBZ] Saving a W140 Rodbender
Recently read a note asking about putting a W123 300D into a 350SDL
rodbender on another forum - the short answer given was - "yes, it;s an
easy change".
Has anyone tried this? Is it an easy change as they said? Seems like a
reasonable way to save a W140 that has exhibited its terminal rod
problems.
W123 300Ds are pretty reasonable now a-days and once the engine and
ancilliary parts were removed the remainder could be parted out/sold,
making
it a zero cost option - depending on cost and proceeds from selling
stuff.
Curious - I think there's some W140s out there that have gotten the
dreaded
"Need a rebuild" comment from their technician and they might want to
just
be rid of it.
BTW, would the donor engine mate to the W140 tranny easily? Or perhaps
the
donor car needs to provide the engine *and* tranny??
Thx -
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
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