Timing belt driven water pump rumination

A comment in the Stealth thread got me to thinking.

Have there been any timing belt engines designed in the last 25 years that do NOT drive the water pump off of said belt?

The only one I can think of is the Mazda K-series V6.

Hyundai's Alpha and Beta range of engines have a seperate belt for the alternator and other pumps

i think that the DOHC 3.4 that was put in a lot of GM cars in the 90's drove the water pump off the accessory belt, but i don't know it that fits your criteria because it's a DOHC version of the 60 degree V6 that came out in the very early 80's.

I was going to write a big long list, but then I started thinkin...

4g63 drives the water pump from the accessory belt.

GM 2.2 in the Cavaliers and Sunfires.

Hey, you didn't say good engines.

Zetec

HappyJack wrote: GM 2.2 in the Cavaliers and Sunfires. Hey, you didn't say good engines.

don't have a timing belt

Subaru from the 80's and early 90's.

EA82 and EA82 turbo in all the box shaped wagons ER27 in the XT6

The Suzuki engine used in the X90 and Side Kick is SOHC w a belt & doesn't drive the WP from it. IDK if that makes the designed in the last 25 years stipulation or not.

The R53 MINI drives the water pump off the tail end of the supercharger... not that this is always a good thing since the gear box in the SC is hard to access and you often don't know the oil has leaked out until it's too late.

The R50 drives it off the standard belt (the Tritec base has a chain).

belteshazzar wrote:

HappyJack wrote: GM 2.2 in the Cavaliers and Sunfires. Hey, you didn't say good engines.

don't have a timing belt

Doh! Now I feel stupid. I knew that.

Well, the Chrysler 2.7 runs the water pump off the timing chain. Technically that's not a belt.

Knurled wrote: A comment in the Stealth thread got me to thinking. Have there been any timing belt engines designed in the last 25 years that do NOT drive the water pump off of said belt? The only one I can think of is the Mazda K-series V6.

Pushing it on the age, but the 1.8 BP in my escort wasn't driven off timing belt either.

F2T isn't either.

miata is always the answer.

F2t is driven off the tbelt

Zetec 2.0 runs off accessory belt, heck you can take the entire pump off without removing anything timing belt related.

Strizzo wrote: F2t is driven off the tbelt

Yeah I got mixed up. Forgot I only had two belts on mine. Tbelt and alternator.

3.0 and 3.2 SHO engines.

belteshazzar wrote:

HappyJack wrote: GM 2.2 in the Cavaliers and Sunfires. Hey, you didn't say good engines.

don't have a timing belt

the 2.2 Ecotec uses a separate chain under the timing cover to run the water pump, but it also uses a timing chain to run the cams so it's also irrelevant to this discussion.

I do wish that the Miata WP could be swapped without having to pull the timing belt, even though it is driven by it's own belt.

Toyota/Lexus 2JZ

VW 1.8 and 2.0s...

iceracer wrote: Zetec

Really? The CVH drives it off of the timing belt, I would've thought that the Zetec would do that too, since it's pretty much the same engine. OTOH I guess I never paid much attention. People with Zetec engined cars tend to just use them until they break and then throw them away.

I wasn't counting Mazda B-engines or VW engines since they were designed in the 70s... and the VW 06A block update has a timing belt driven water pump. Looks almost like the Audi fives, it does... except VW put an actual belt tensioner on it, instead of putting slotted holes on the water pump for tension adjustment.

And then putting the water pump behind a metal inner timing cover, turning what should be a 2 hour job into a much longer ordeal.

Knurled wrote: I wasn't counting Mazda B-engines or VW engines since they were designed in the 70s...

Same with 2.0/2.3/2.5 Fords.....