Does the 1998, Oldsmobile Eighty-Eight have a timing belt or a timing chain?
The GM 3.8 liter engine is a push-rod engine. So it uses a timing chain.
Tester
Chain.
Tester: Out of curiosity, do all OHC engines use belts instead of chains?
All Toyota 22R and 22RE are OHC and use a chain. Also, the Cadillac Northstar engine has 4 OHCs, and uses 2 chains, one for each bank.
No. Some OHC engines use a chain. My Nissan pickup has an OHC engine and it uses a timing chain. But all push-rod engines use a timing chain.
Tester
Tester: Out of curiosity, do all OHC engines use belts instead of chains?
NOPE…As far back as my 74 Chevy Luv (Isuzu)…overhead cam with timing chain.
Actually, lots of OHC engines use chains. Manufacturers are going back to chains. My tC, a Camry 4-banger, has a chain. My Toyota pickup, a 22R, had a chain.
Mike…you went from a Vega to a '74 Luv? You poor thing!
Seriously, our Vegas had chains, as I recall. It was the only part that didn’t break.
Add all Ford Modular engines to that OHC with chain list. That is a lot of engines, 4.6, 5.4, V10,…
Mike…you went from a Vega to a '74 Luv? You poor thing!
Yea I know…I needed a cheap pickup…and boy was that it…I hauled a load of TopSoil once…At 40mph I could turn the steering wheel left or right and NOT effect the direction of the truck.
Seriously, our Vegas had chains, as I recall. It was the only part that didn’t break.[/quote]
Vega’s had a belt…and they broke…but a non-interference engine…Mine broke on the highway in Nashville TN…Coasted off the highway and replaced it at the side of the road.
And the 2.0L Focus, too…
Timing gears are out of fashion now it seems. They were once very common. Some earlier OHC engines used reciprocating rods to turn the cams.