Coolant Leak, rear of engine

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Originally Posted by klink

thats the sidde my tank split

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Radiator is only a couple of hundred k's old, should have done the hoses at the same time. Got a new top and bottom for the drivers side today and have fitted them, will see how it goes leak wise over the next couple of days.

I had a bad leak but couldnt work out why it was comming from the rear of the motor, I lifted it up and sure enough it was leaking from the radiator and dribbling along the rail and dripping down the back, it was only a hair line fracture as well but couldnt see it untill the car got hot and the crack expanded from the heat.

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Originally Posted by Arrow420

I had a bad leak but couldnt work out why it was comming from the rear of the motor, I lifted it up and sure enough it was leaking from the radiator and dribbling along the rail and dripping down the back, it was only a hair line fracture as well but couldnt see it untill the car got hot and the crack expanded from the heat.

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I have my fingers crossed that this is what mine is :)

Hey guys,

Can anyone tell me off the top of their head what diameter the heater hoses are on the LS1 (the ones in the engine bay that run over the drivers side chassis rail). I have found several leaks from what I assume is heater related hoses. It is the small device right next to the headers with 3 pipes running into it. Hoping some decent worm drive clamps will fix it, otherwise it might need some new hoses.

* goes out to measure*

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Originally Posted by Toddler78

* goes out to measure*

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lol, I did think of that, but thought maybe someone might know the exact pipe size :)

Rob, The one closet to the front is 27mm OD (approx 24mm ID) this goes into a tee about 100 from the water pum then goes back to 23mm OD
the other one is also 23mm OD (assuming same wall thickness then about 20mm ID)

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Originally Posted by Toddler78

Rob, The one closet to the front is 27mm OD (approx 24mm ID) this goes into a tee about 100 from the water pum then goes back to 23mm OD
the other one is also 23mm OD (assuming same wall thickness then about 20mm ID)

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Thanks mate, much appreciated :bow:

Rob, you'll probably find that its the heater tap leaking. they're not expensive

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Originally Posted by sikss

Rob, you'll probably find that its the heater tap leaking. they're not expensive

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If you're changing hoses and haven't done the heater tap recently I'd definitely change that too. They turn really brittle and leak, then when you go to pull the hoses off they break into a few pieces lol.

Thanks for the heads up on the heater tap guys, will grab one before I change the clamps :cheers:

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Originally Posted by BLACK 346

Thanks for the heads up on the heater tap guys, will grab one before I change the clamps :cheers:

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Hey BLACK346 everyone seems to be calling you "Rob" & I thought your name is "Rod". :confused:
Which one is it? :jester:

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Originally Posted by whitels1ss

Hey BLACK346 everyone seems to be calling you "Rob" & I thought your name is "Rod". :confused:
Which one is it? :jester:

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yes Ed it is Rod.

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Originally Posted by klink

yes Ed it is Rod.

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Okay Paul, thanks. ;)

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Originally Posted by whitels1ss

Okay Paul, thanks. ;)

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Bobgen3 is Rob