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The mkiv Supra Owners Club

TRD Rad cap


Ray

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After putting this on... my car is leaking water! :eek:

 

Seems to be below the turbo area but havnt looked closely yet... Is there any possibility this could be the work of that dreaded cap! i heard the springs are higher pressure over stock...

 

 

any help appreciated

 

Ray

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The stock cap is rated at 1.1bar and the TRD one 1.3 bar.

 

I'm assuming that the pressure level indicated is before the cap will allow the coolant to pass to the overflow tank when things are getting hot ??

 

So, the new cap is restricting the flow until this new higher pressure is reached, before allowing it to overflow and so the whole coolant system is under more load.

 

I guess it's just found a weak spot and taken advantage of it.

 

Have you tried the old cap back on the system and rechecked ?

It might be that just pushing that extra load is pushing it too far for your current system (age) ??

 

However, It might be that the leak is now their and no matter which cap you use will not remove the leak until the leak is fixed.

 

Is my thinking correct ?? Or am I talking cr@p ?

 

(One last thing, you have not changed anything else and are running the same boost as before right ?)

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I had a problem with my Gt-four where I was losing water and the car would overheat. I replaced the rad cap but would still loose water.

In the end it turned out the rad has small cracks in the end tanks which was allowing the water to turn to steam and then blow the rad cap. Got a new rad. Sorted it out a treat.

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Hey guys thanx for your tips :)

 

I found that a rubber pipe was the cause of the water leak! must have been the excess pressure :(

 

Also my water pump is mashed too! Need to get a new one...

 

Anyone have rough cost and labout charge for fitting this item?

 

 

Regards :thumbs:

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Originally posted by Ray

Hey guys thanx for your tips :)

 

I found that a rubber pipe was the cause of the water leak! must have been the excess pressure :(

 

Also my water pump is mashed too! Need to get a new one...

 

Anyone have rough cost and labout charge for fitting this item?

 

 

Regards :thumbs:

 

I charge 120 to fit a pump, the pump itself is about 70 quid from memory. I have one in stock as I type.

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Originally posted by Chris Wilson

I charge 120 to fit a pump, the pump itself is about 70 quid from memory. I have one in stock as I type.

 

I wish I lived nearer you :p

 

Pump from toyota £130

New cam belt £45

Fitting £411

 

Total £586

:eek: :eek: :eek:

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I had a TRD rad cap fitted on my fluidyne radiator and had problems with it leaking. The cause was that the cap was not seating against the inside of the rad properly, changed to an ARC rad cap which fitted perfectly and cured the problem with the water overflow.

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Originally posted by Paul Whiffin

Ray I can do the pump for you if needed, I'm in Enfield, North London so not to far away from you probably. Pumps are around £70 approx, belt(if you need it done) is normally £30 roughly, labour £130

 

 

Thanx for the offer Paul, but the car is literaly pissing out water. im in west london will take me atleast 1 hr to get to you from here. Too far :(

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