New Waterpump Blew On The Dyno :(

[perzn_34]

hey guys i bought a built r33 a few months ago. The motor was forged in Feb and tuned in march but due to a misfire it wasn't tuned to its full potential. It was then defected in march and taken off the road till now.

I bought it with the misfire issue fixed and the gates timing belt was noisy. I took it to a repeatable workshop and they took the fan, belt and timing belt and all that off and adjusted the timing belt so wasn't noisy much anymore and they did say it was fairly tight.

After that i drove the car home very slowly as i didn't want to give it to it hard before the tune. It was at home for a month not moved much till yesterday i took it for the touch up tune and after 30mins on the dyno the freking waterpump broke, pushed the fan into the radiator made holes in it and smashed the shroud. Long story short shit hit the fan.. literally..

Anyways it was a 7000km old motor and water pump and it was a genuine nissan pump. tuner thinks the pulley belt was too tight and broke the pump. and who ever tighten it last

Now do you guys think when the shop did the timing belt adjustment he tighten the pulley too tight after it? (they are a very reputable shop), he said who ever did the belt before them made it too tight as the timing belt was tight aswell.

I called the shop and they said we are not stupid and we wouldnt do something like that stupid.

The reality is the pump was runing fine for 7000km on and off the dyno but after they did the timing belt it wasnt driven more than 30-40km till it broke.

what do you guys think i should do?

its a $1000 repair which im not sure who's liable for it. thanks for your time

[Gts-t]

Pot up some pics of the broken water pump. An overtight belt will wear out the bearings in the water pump but unlikely to snap the front off as it sounds in your story.

[Odium]

Welcome to the world of Modified cars

Spending too much time trying to pin blame on a workshop for the many issues that pop up with a modded car, just leaves people with a bad opinion of you and your car.

The belt isn't on right now obviously, so you can't say for sure that it was too tight. I've seen 3-4 people have water pumps fail within the past year on the forums and facebook. A few of them being mechanics themselves, and know how to install belts properly... instead the casing of the pump broke apart for some reason...

Buy a new n1 pump from the states, buy an aftermarket alloy radiator, install it and check it was done right. Then you're done with it.

[R31Nismoid]

what do you guys think i should do?

its a $1000 repair which im not sure who's liable for it. thanks for your time

Get it fixed would be a good place to start!

im not sure who's liable for it.

Well it's your car, so you'll be footing the bill. It's a 2nd hand car, there is no warranty on something someone else might or might not have done wrong.

[The Sherrid]

there are many reasons for engine failures and i'm sure you will hear more and more as you continue to investigate.

ask yourself this: what answer will satisfy you and what are you going to do with that answer?

the two guys above have hit the nail on the head. read their posts a few times over. If your an enthusiast at the least then get in the know of your own machine and do all the work yourself or find a reputable shop to do all your work. I do all my own work from building it to driving it. The point being that half the fun is in doing it yourself, and what you cant do yourself, find someone to help or show you how to do it.

the forums have plenty of information for the basics.. though, the more difficult stuff has "experts attached"