rob-2

So when do we replace it? 100K?

Typically it's done with the timing belt, since we don't have one of those...

RedY2KS2k

When it leaks?

slalom44

On timing belt cars you typically have to remove the timing belt to get to the water pump. Since it's such a hassle to get the timing belt off anyway, you're better off replacing the water pump at the same time, which is around 100,000 miles.

But with the S2000, it'a a piece of cake to remove the water pump. And since they usually fail by gradually leaking or making noises, you are unlikely to get stranded if you just wait for some symptoms. But if you do wait, it would be a good idea to keep an eye on the coolant reservoir and the temp gauge.

Note - this is just an opinion. Many conservative people will disagree since there is a possibility of overheating if you aren't paying attention. There is no right or wrong answer. I currently have 135,000 miles and I'm still on my original pump.

jimbosr1

i havent heard of one going bad yet.143k on mine

iam7head

I am still on my OG pump @ 134k, a good handful of track events later and it's still running strong

but i do planning to get a new unit at 150k

CosmosMpower

132K original pump

Stratocaster

You know, we don't have a timing belt. We have an accessory belt. We have a timing chain.

iam7head

yep, and the accessories belt swap can be done in 10 minutes flat thanks to honda's design

BBS2000

I just picked up my S2000 in the middle of December, 86K on the car. This past weekend I did the water pump at 88K, it might have gone a little longer but I was having to add coolant every other day and my accessory belt was sqealing from the coolant dripping on it..

josserman

I'm pretty sure my water pump is going bad