opinions

[S15ETA]

i ran into a little trouble today wit my evo...i was driving home and gave it a little stick and i heard this big fukin bang!!!! wtf? did i blow my motor again????coolant was all over my windscreen, smoke everywhere lookin in my review mirror......the engine still ran so i just pulled over and popd the bonnet and there was coolant all over the fukin thing......i had a look around and it turned out the welsh plug on the water pump had blew off and threw coolant everywhere

has this happened to anyone before????

 

[JayRome]

welsh plugs are pressed in really well.... thats got to be a hell of alot of pressure to pop that thing out...

 

[EVO-00X]

lol... never seen it happen before. Usually the radiator or a hose would pop first but not the welsh plug at the end of the waterpump! Do you know if it has been replaced and if so what brand it was? Probably just one of those wierd things you only ever see happen once every 5 years or so

 

[DOUGMO]

never seen that befpre harry

 

[Marc]

Didn't that happen on the spew green Eclipse in fast and furious??

 

[S15ETA]

it was an after market waterpump from meek....instead of spendin over 300bux from mitsu i got one from them for 120.....maybe it was just shit then...maybe i should replace my rad cap and put a brass w/plug in with some locktite???

 

[GSRSOL]

fark! lucky its something relatively minor

 

[S15ETA]

i know dan!!!! my asshole caved in:blink:

 

[CLuTZ]

lucky it was the plug and not the water pump itself, cos it could have just leaked and you would have only noticed it until you were sitting right on H!!

 

[S15ETA]

what u guys think? should i go for a new stock rad cap? or get an aftermarket cap with 1.3bar pressure?

 

[DOUGMO]

less pressure 1.3 is too high-too much pressure

 

[JSTYLE]

send it back to meek and ask for a please explain from their supplier plus a refund. Buy a new mitsubishi one!

Jon

 

[D3bb4]

what'd cause the pressure buildup though? or maybe just a faulty-sealed welsh pump?

 

[bazeng]

My opinion:

Option1:
If the pump is ok, get another welsh plug, loctite and bash it back in.
(was the water pump modified at all Harry?)

Option2:
Replace with an oem water pump. The stock ones are much better than the aftermarket pumps.

Maybe try option 1, if that fails, go option 2?

 

[Jonson]

Aftermarket water pumps are still pretty good. Like GMB is OEM, we used to fit a lot of them with no problems at all.
Did your motor just get built? I would be checking to see if the Welsches were done, if they were, it's up to the rebuilder to repair it. And if they weren't replaced....They fucking should have been.
I've never seen a Welsch actually blow out, something is not right to build that much pressure. I would be checking the block for heat/stress cracks before just fitting another Welsch Plug. Fit a stock Cap, if the water pump isn't leaking, leave it.

 

[bazeng]

I think he said the welsh plug on the water pump popped off Jonson.

 

[tritondan]

i ran into a little trouble today wit my evo...i was driving home and gave it a little stick and i heard this big fukin bang!!!! wtf? did i blow my motor again????coolant was all over my windscreen, smoke everywhere lookin in my review mirror......the engine still ran so i just pulled over and popd the bonnet and there was coolant all over the fukin thing......i had a look around and it turned out the welsh plug on the water pump had blew off and threw coolant everywhere

has this happened to anyone before????

Yeah. In my old chrysler days. When plugs would rust and the holes they went in too clever. Usually the one on the gearbox end of the block. You could do them all but that one in the engine bay, so it was never done, until I got the car.

When you get the rs pump off, heve a good look for a crack. A bit of curry might have put too much belt drive force into the body of the "cheaper" pump.
Where did they save the money? cheap alloy? bad machining tolerance in the hole? bad plugs?

I agree, at least you didnt cook it.

 

[DOUGMO]

are you running an evo or magna pump harry?

 

[S15ETA]

evo 6 pump george.....as the magna pump would not fit, the pulley offset was way too close to the chassis rail and would not line up with the other acc pulleys.....yes the pump is modyfied.....but when i say modified i had a bead of alloy welded along the edge of one side 20mm long and 3mm wide as it didnot have enough flange to seal and then machined flat.....which would not have anything to do with this
however, i did notice that my rad cap is sticky and fukd which i think was the cause....it would have kept building pressure in the system and when u think about it, the most pressure in the coolant system is right after pump ...could this be correct?

 

[DOUGMO]

yep,caps are the cause of alot of cooling issues. it also may have blown out the welsh plug because of the heat from welding up the pump ....which loosened it up a bit maybe