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RE: Timing belt
You wrote:
> While we're on this timing belt thread does anyone know if the low
>compression pistons and the stock cam grind on the turbo'd engines is such
>thatif a belt does break or is thrown off the pistons and valves won't come
>together? Some turbo'd cars, because of their low initial compression, can
>losetheir timing belts and just coast to an embarrassing stop, others can be
>death
>to valves, pistons, heads or, worst case scenario, whole block gets written
>off. Which catagory do our turbo'd 5 cylinders fall into???!!!
Hi Shef:
I thought the 5kt engine was NOT freewheeling i.e. major damage likely but
according to the attached list, there's no recommended change interval and
engine damage is not possible. Famous last words..yer take yer chances...
The P-951 requires timing/bal shaft belts every 30-45k. Ouch!
Steve Jagernauth '74 911/3.0l Bahama Blue
sjagernauth@attmail.com '87 951 Pearl Black (**FOR SALE**)
(908) 658-8289 Work '87 Audi 5KCST & '88 Audi 5Ks
------------- Attached Message Follows -------------
Freewheeling Engine FAQ version 93.05.01
maintained by dave.williams@chaos.lrk.ar.us
The original basis of this list was a transcript from Motor magazine,
August 1991, p. 22, posted by Tom Leone. <tgl@slee01.srl.ford.com>
Corrections by Tommy Wilson of Gwatney Chevrolet/GEO.
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 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 All None Yes(11)
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)
"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