broken timing chain ford ranger

[charles kynoch]

The timing chain broke on my 83 Ford ranger 2.8L V6. My local garage
says that the valves are probably all bent and the engine will need a
complete overhaul, but I'm not so sure they're giving me the straight
story. Is anybody familiar with this engine, and if so, is there enough
clearance between the pistons and valves to avoid any damage to the
valves?
Thanks.

[Dan Bergmen]

charles kynoch (ch...@gate.net) wrote:
: The timing chain broke on my 83 Ford ranger 2.8L V6. My local garage

I'm including a write up on this subject even though it does not include
your engine since it gives a couple of names and e-mail addresses of
people that may know:

*************************************************************************

-> In the thread on timing belts the terms "interference engine" and
-> "freewheeling engine" were used. What do these terms mean, and how do
-> I determine which kind my engine is? (I've got a Mitsubishi
-> Mirage with the 4G15 engine.)

Looks like FAQ time again:

Freewheeling Engine FAQ version 93.06.29
maintained by dave.w...@chaos.lrk.ar.us

The original basis of this list was a transcript from Motor magazine,
August 1991, p. 22, posted by Tom Leone. <t...@slee01.srl.ford.com>

Corrections by Tommy Wilson, tommy....@chaos.lrk.ar.us.
Other corrections as noted.

Manufacturer Engine Recommended Engine
Applications (1) Change Damage
Interval Possible?
(Miles)
------------ ---------------- ----------- ---------
Acura All 1986-89 None Yes
All 1990 90,000(2) Yes

Alfa-Romeo 1987-89 Milano None Yes
164 50,000 Yes

Audi V8 90,000(3) Yes
Diesel None Yes
All others None No

BMW 2.5, 2.7L 60,000 Yes

Chrysler Corp. All Chrysler-built None No(4)
All Mitsubishi-built 60,000(5) Yes
Medallion 2.2L None Yes

Daihatsu 1.0L 3-cyl. 60,000 Yes
1.3L 4-cyl. 60,000 Yes
1.6L 4-cyl. 120,000(6) Yes

Ford Escort 1.6L to '83 60,000 Yes
Escort 1.6L '83-1/2 up 60,000 No
Escort 1.9L None No
Mazda-built 2.0L diesel 100,000(7) Yes
Mazda-built 2.2L 60,000 Yes
All 2.3L Pinto/Must/etc 60,000 No
Ranger 2.0L 60,000 No
'70-'74 Pinto 2000 None No

General Motors Chevy Spectrum 60,000 ___
Chevy Cavalier
Olds Quad4
Chevette

Geo Prizm 60,000 ___
Metro
Storm

Honda All Prelude 60,000 Yes
Civic, 1.5, 1.6, & HF 60,000 Yes
1985-89 exc. Civic None Yes
All 1990 90,000(2) Yes
'82-'88 Accord 50,000 Yes
'89-'93 Accord 80,000(13) 50/50 chance

Hyundai All 60,000 Yes

Infiniti All 60,000 Yes

Isuzu All 60,000 Yes

Lexus All 60,000 No

Maserati V6 30,000 Yes

Mazda All exc. diesel 60,000 Yes
Diesel (1984-85) 100,000(7) Yes

Mitsubishi All exc. diesel 60,000(5) Yes
Diesel 60,000(7) Yes

Nissan '85 Sentra 1.6L No(15)
most pre-1986 None Yes
all 1.6L 60,000 ___
1986 and later 60,000(8) Yes

Peugeot 1.9L None No
2.2L None Yes

Porsche All 4-cyl. 45,000(9) Yes
V8 60,000(9) Yes

Sterling All None Yes

Subaru All 60,000 No

Suzuki All None No

Toyota All 60,000(10) No

Volkswagen 8 valve 60,000(14) Yes(11)
16 valve 60,000(14) No(14)

Volvo Pre-1986 gasoline 40,000 Yes
1986 and later gas 50,000(5) Yes
1986 and later gas 50,000(5) Yes
All diesels 75,000(7) Yes

Yugo 1.1L None(12) Yes
1.3L None(12) No

(1) "All" refers to all engines equipped with timing belts for
each maker; does not apply to engines with timing chains.
(2) Or 72 months.
(3) Inspect and adjust at 30,000 and 60,000 miles.
(4) 2.2L Turbo III, yes.
(5) Some engines have two belts.
(6) Or 144 months, whichever comes first.
(7) Has front and rear belts.
(8) Or 48 months; inspect at 15,000 miles or 12 months.
(9) Check tension at 2000 miles, then every 15,000 miles.
(10) Inspect at 30,000 or 45,000 miles per model.
(11) At high engine speed.
(12) Inspect every 15,000 miles. Engine service schedule
ends at 50,000 miles.
(13) Depending on cam position when the engine stops, the engine
may escape damage, as opposed to most others, which are always
damaged. (tw)
(14) info from James Matthew Kokernak <kok...@rpi.edu>
(15) info from Steve Anthony Nilsen <sn...@andrew.cmu.edu>

"Although some manufacturers do not specify a belt replacement, it's
a good idea to plan for one at the 50 to 60 thousand mile mark."
- Tommy Wilson

In article <C9E1r...@spk.hp.com> boro...@spk.hp.com (Don T. Borowski) writes:
>
>A "freewheeling" engine is one in which the pistons will not strike
>the valves, should the timing belt break and leave a valve fully
>open and extended into the cylinder. In an engine like this, if the
>timing belt breaks, all you need to do is replace the belt, and you
>are on your way again.
>
>
The Toyota 2SE engine (used on early Camrys and others) is indeed
freewheeling. I discovered this when my timing belt broke a couple
of weeks ago, and it verifies what the dealer told me a few years
back.

Bob Morrow

[Douglas Bollinger]

charles kynoch at ch...@gate.net says...

> The timing chain broke on my 83 Ford ranger 2.8L V6. My local garage
> says that the valves are probably all bent and the engine will need a
> complete overhaul, but I'm not so sure they're giving me the straight
> story. Is anybody familiar with this engine, and if so, is there enough
> clearance between the pistons and valves to avoid any damage to the
> valves?
> Thanks.

I'm pretty sure that the 2.8L has timing GEARS, not a chain, so
something is amiss right there.

The clearance between the valves and pistons is not something I'm
sure about.

--
Douglas Bollinger
Mt. Holly Springs, PA 17065

'I know' is just 'I Believe' with delusions of grandeur

[Mbspath]

it,s a freewheeling motor. it all depends on exactly where the lower end of the
motor stopped in relation to the valvetrain.