Tooth jumping V8?

R

Richard

Guest

• Sep 20, 2004

• #1

Ok, previous Rangie listed on ebay sold outside of auction so I missed out,
however a better one has come up...sort of. Who all of you can tell me, is
it unusual for a timing chain to jump a tooth in a 3.5 1976 model? The
fellow says that it jumped a tooth and burnt an exhaust valve in no7 (has no
compression in that one) Having little to no experience with internals on
these motors I'd love for someone to 'diagnose' it for me! Says it still
runs, but coughs and splutters. Has new tyres and 5spoke alloy mags and 2pac
paint and looks a real treat.
Richard.



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A

Austin Shackles

Guest

• Sep 20, 2004

• #2

On or around Mon, 20 Sep 2004 21:16:21 +1000, "Richard"
<[email protected]> enlightened us thusly:

>Ok, previous Rangie listed on ebay sold outside of auction so I missed out,
>however a better one has come up...sort of. Who all of you can tell me, is
>it unusual for a timing chain to jump a tooth in a 3.5 1976 model? The
>fellow says that it jumped a tooth and burnt an exhaust valve in no7 (has no
>compression in that one) Having little to no experience with internals on
>these motors I'd love for someone to 'diagnose' it for me! Says it still
>runs, but coughs and splutters. Has new tyres and 5spoke alloy mags and 2pac
>paint and looks a real treat.
>Richard.

about as unlikely as an unlikely thing, unless the engine's very shagged.
The timing chain is a quite short morse chain running on "gears" (not
actually the same tooth profile) and for it to "jump" a tooth it'd have to
be so worn that the rest of the engine is apt to be complete scrap.

OK, FWIW - budget for replacing the engine. Good secondhand ones can be got
for a few hundred if yer lucky, recons are more and so is doing a decent
rebuild yerself.

missing compression on one pot might be something simple like a burnt valve
or might be something more sinister. I had one with no compression on no.1
and never got to the bottom of it.

but I'd be very suspicious of such a story meself.

 

A

AJG

Guest

• Sep 20, 2004

• #3

In message <[email protected]>, Austin Shackles
<[email protected]> writes
>On or around Mon, 20 Sep 2004 21:16:21 +1000, "Richard"
><[email protected]> enlightened us thusly:
>
>>Ok, previous Rangie listed on ebay sold outside of auction so I missed out,
>>however a better one has come up...sort of. Who all of you can tell me, is
>>it unusual for a timing chain to jump a tooth in a 3.5 1976 model? The
>>fellow says that it jumped a tooth and burnt an exhaust valve in no7 (has no
>>compression in that one) Having little to no experience with internals on
>>these motors I'd love for someone to 'diagnose' it for me! Says it still
>>runs, but coughs and splutters. Has new tyres and 5spoke alloy mags and 2pac
>>paint and looks a real treat.
>>Richard.
>
>about as unlikely as an unlikely thing, unless the engine's very shagged.

Never had it happen but cam gears routinely wear to the point of
gearlessness and the timing chain to the point of being sloppier than a
sloppy thing. I suppose it would be quite possible to go that little bit
further (in fact I'm not sure that I haven't heard of it) that the slop
coincides with the gearlessness and jumps ...

Unlikely? Plausible I'd suggest.

Generally knackered? Quite possibly.

Allow a few hundred quid for a *good* s/h engine ... is the rest worth
the money you're going to pay?

--
AndyG

 

A

Austin Shackles

Guest

• Sep 20, 2004

• #4

On or around Mon, 20 Sep 2004 19:55:25 +0100, AJG
<[email protected]> enlightened us thusly:

>Unlikely? Plausible I'd suggest.
>
>Generally knackered? Quite possibly.

to get the camchain that worn I'd be amazed if the rest of the engine were
in anything like decent condition. and besides, if that's all that's wrong
with it why sell it with a dud #7 pot? bung another valve in, I would. The
fact that the seller hasn't bothered implies to me that there's something
more serious up with it.

 

T

Tim Hobbs

Guest

• Sep 20, 2004

• #5

On Mon, 20 Sep 2004 20:11:04 +0100, Austin Shackles
<[email protected]> wrote:

>On or around Mon, 20 Sep 2004 19:55:25 +0100, AJG
><[email protected]> enlightened us thusly:
>
>>Unlikely? Plausible I'd suggest.
>>
>>Generally knackered? Quite possibly.
>
>to get the camchain that worn I'd be amazed if the rest of the engine were
>in anything like decent condition. and besides, if that's all that's wrong
>with it why sell it with a dud #7 pot? bung another valve in, I would. The
>fact that the seller hasn't bothered implies to me that there's something
>more serious up with it.

I also don't understand why a chain would only jump one tooth. If
it's gonna jump once, it would surely just keep on jumping until
something went bang.
--

Tim Hobbs

'58 Series 2 88" aka "Stig"
'77 101FC Ambulance aka "Burrt"
'03 Volvo V70

My Landies? http://www.seriesii.co.uk
Barcoding? http://www.bartec-systems.com
Tony Luckwill web archive at http://www.luckwill.com

 

R

Richard

Guest

• Sep 21, 2004

• #6

http://carpoint.ninemsn.com.au/DesktopDefault.aspx?UsedCarID=400701&TabID=33
28&Alias=carpointau

Have a look at it and tell me what you think. Owner claims that the engine
was professionally rebuilt 3 years ago.
I have another 3.5 I could put in to start with. The rest of the car has had
a fair bit of money spent on it and looks great. He has dropped the price
from $3500 to $2700 Aussie dollars.
I'm fairly sure the guy is loaded as he went out and bought a 97 model and
parked this one...


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R

R L Driver

Guest

• Sep 21, 2004

• #7

"Richard" <[email protected]> wrote in message
news:[email protected]...
> Ok, previous Rangie listed on ebay sold outside of auction so I missed
out,
> however a better one has come up...sort of. Who all of you can tell me, is
> it unusual for a timing chain to jump a tooth in a 3.5 1976 model? The
> fellow says that it jumped a tooth and burnt an exhaust valve in no7 (has
no
> compression in that one) Having little to no experience with internals on
> these motors I'd love for someone to 'diagnose' it for me! Says it still
> runs, but coughs and splutters. Has new tyres and 5spoke alloy mags and
2pac
> paint and looks a real treat.
> Richard.
>
>
>
> ---
>Having just stripped 2 V8 's from the seventies I can tell you that they
will be "quite well worn" School mashed potatoe will have more lumps than
the cam shaft and all the heads will be blowing into the valley area. one
of these will be the root of your no comp ...... Theres loads of info on
knackered V8's ( as well as some scary prices) on www.rpiv8.com
Steve the grease

 

A

Austin Shackles

Guest

• Sep 21, 2004

• #8

On or around Tue, 21 Sep 2004 17:45:33 +1000, "Richard"
<[email protected]> enlightened us thusly:

>http://carpoint.ninemsn.com.au/DesktopDefault.aspx?UsedCarID=400701&TabID=3328&Alias=carpointau
>
>Have a look at it and tell me what you think. Owner claims that the engine
>was professionally rebuilt 3 years ago.

well, if you have another engine and the rest looks good, then that's your
major worry sorted. However, I repeat my comment that if it requires
minimal work on the engine then why isn't he doing the work, so as to be
able to sell it as a "good runner"?

I reckon the engine's shagged. the fact that it was a recon 3 years ago
means next-to-nothing unless a) you know it was a reputable recon, not just
a cosmetic cheapo job and b) that it's been looked after and servived
correctly since. Oh and c) how many miles since it was done.

I tend to the view that one or more of a), b) or c) are not optimal.

I dunno what Oz prices are like. if the current price is fair for the
vehicle and condition, with a shagged engine, then go for it, especially if
you have an engine to slot in. Then if the engine turns out to be
repairable easily, you get a bargain, if not, by the time you put your
engine in, it's still a fair price. can't really see in that kind of
picture what the important bits of body structure etc are like.

 

N

Nige

Guest

• Sep 21, 2004

• #9

"R L Driver" <[email protected]> wrote in message news:[email protected]...

www.rpiv8.com

That site has serious spelling issues & crap grammar! But, it does appear to have some good info for a
new V8 owner!

Nige

 

R

Richard

Guest

• Sep 22, 2004

• #10

Yes that was the first thing that I noticed about the site as well! True
about the info for new V8 owners though.
Richard


"Nige" <nigel.inceNO****[email protected]> wrote in message
news:[email protected]...
>
> "R L Driver" <[email protected]> wrote in message
news:[email protected]...
>
> www.rpiv8.com
>
> That site has serious spelling issues & crap grammar! But, it does appear
to have some good info for a
> new V8 owner!
>
> Nige
>
>


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R

Richard

Guest

• Sep 22, 2004

• #11

the car is about 1000km away from my place so I'm getting dear old dad
(previous Rangie owner) to go have a sticky beak for me on saturday. I'll
get his judgement on motor condition and other vitals and make the decision
from there. I think that slotting my motor in and doing a strip down on the
other might be the go. Anyway, Saturday will shed more light on the subject!
I'll let you know how it goes!

Richard.

"Austin Shackles" <[email protected]> wrote in message
news:[email protected]...
> On or around Tue, 21 Sep 2004 17:45:33 +1000, "Richard"
> <[email protected]> enlightened us thusly:
>
>
>http://carpoint.ninemsn.com.au/DesktopDefault.aspx?UsedCarID=400701&TabID=3
328&Alias=carpointau
> >
> >Have a look at it and tell me what you think. Owner claims that the
engine
> >was professionally rebuilt 3 years ago.
>
> well, if you have another engine and the rest looks good, then that's your
> major worry sorted. However, I repeat my comment that if it requires
> minimal work on the engine then why isn't he doing the work, so as to be
> able to sell it as a "good runner"?
>
> I reckon the engine's shagged. the fact that it was a recon 3 years ago
> means next-to-nothing unless a) you know it was a reputable recon, not
just
> a cosmetic cheapo job and b) that it's been looked after and servived
> correctly since. Oh and c) how many miles since it was done.
>
> I tend to the view that one or more of a), b) or c) are not optimal.
>
> I dunno what Oz prices are like. if the current price is fair for the
> vehicle and condition, with a shagged engine, then go for it, especially
if
> you have an engine to slot in. Then if the engine turns out to be
> repairable easily, you get a bargain, if not, by the time you put your
> engine in, it's still a fair price. can't really see in that kind of
> picture what the important bits of body structure etc are like.
>


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