Coolant Leak

[Flash89]

hey guys just got my car dyno yesterday and before i had it dyno they notice that i had cooland leaking from the water pump. would i have to replace the water pump or just the seal?? if it was to be the water pump where can i get a new or aftermarket one??

[skybarge]

hmmm, it really depends

if could just be leaking from the base due to a seal failure

or it could be that the shaft of the waterpump is rooted

if it's the first one, remove the waterpump, put new seal on it and put it back in, they have a pretty long shelf life anyway

if it's the shaft, then you'll be needing a new one, scope out forums, ebay and trade places where you live, I think i got mine for $70 last time I needed it, which wasn't too bad a price, but I guess I could've searched for longer and found a cheaper option

[Flash89]

where abouts will i find a new seal. yeah not really sure about the leak it just started leaking during idle

[skybarge]

You basically use CRC or Selleys quick sealant:

There are two types both work fine:

Black one = most commonly used is Windscreen Sealant

Clear one = marine sealant

btoh are silicone, use a 2-3mm strip round the old gasket edges of the waterpump, make sure you scrape off all the old stuff, then put it on, bolt it up and leave it to dry for a few hours

Then it should be as good as new, total cost round $10

[tacker]

Flash if your going to go to the trouble of removing your pump i would install a new item as its a lot of mucking around to get the old one off and new one on.

try just jap they have them in stock as many of the traders here will

[Gazee]

its easier to get a new pump, when mine was leaking i asked about seal kits and everyone said to replace the whole thing because the pumps are pretty cheap now a days

if you havn't done your 100k service yet it'll a good time to now aswell considering timing belt might have to be taken off also

dont just seal it up either.. do it properly and change it all

[Godzilla32]

Got a genuine water pump from nissan for my 26 for $76

[Flash89]

where abouts could i get the water pump as i need it ASAP

[Flash89]

ok guys got the pump. where about will i find the gasket for it??

[tacker]

Flash you dont need a gasket you will need to use a silicone based sealant which is applied to the water pump just before you put it in place.

Make sure the surface on the engine block is really clean of old silicone gasket, scrap it with a sharp edge then just before you place the new water pump with silicone gasket applied, give the engine block a spray and wipe with brake cleaner to get rid of any possible oil so the silicone bonds well.

[Flash89]

is there a link showing how to change the water pump. seems like a bitch to get to

[tacker]

mate i am not sure about a GTS-T but if its anything like a GTR then dont do it unless you are sure of what your doing.

You need to remove the engine vibration dampener of the crank shaft, all the alt, A/C etc. Then you will need to remove the cam timing belt. If you havent done it before get a mate who has or a work shop manual as there i a little bit involved.

[Flash89]

i am half done but they are three bolts that are very hard to get to

[tacker]

And they be the bolts behind the cam timing belt at a guess

[K_E_V_I_N]

I'm at the same stage as you my friend, gonna have to take the cam belt, belt Tensioner

and harmonic balancer off to access the three water pump bolts.

[Flash89]

yeah, damn it is a real bitch to get to. but easy if ya had the tools. just going shopping for a pulley puller

[tacker]

ohh and dont do the fan belt up to tight either

[K_E_V_I_N]

WoW ^^^ I'll keep that in mind.

[Flash89]

ok i just did mine but one prob. there is like a tiny hole in the seal and there is coolant coming out like how water comes out of a water pistol. could i just put a lil dob of sealant to cover it??

[K_E_V_I_N]

I have the same prob, i took mine off again and re-sealed it. Might as well do the job right.