Z3 cooling system fail

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Rascal69
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Z3 cooling system fail

Post by Rascal69 »

Customer calls me up and says he got a radiator leak on a car he just purchased. We arrange and he brings it in . This is what I have to work with. 122000kms on the clock.

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Removed the radiator ... Image shocked.
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Radiator broke so the previous hack mechanic qbond it shut. Then tap a new valve and seal with with bathroom silicone, pratley steel and qbond. And expected it to hold pressure under operating temps.

I opted for a new radiator, took two weeks but it arrived and everything became clear.

Will post more as we progress.
Current: 2005 E55 AMG
Current: 2007 ///M Coupe
Current: 2019 Fortuner 4x4

Ex: 1998 BMW M3
Ex: 2011 REVO 2 Focus ST - 208wkw & 465nm's (FRnR)
Ex: 1994 E36 328i Track Car (Budler Motorsport built)
Ex: 2011 REVO 2 Mk6 GTI DSG - 200wkw & 452nm's (KAR)
Ex: 2007 REVO 2+ S3 - 12.7s @ 176km/h (Tarlton 2010) and 224km's on 1km (ODI)
Ex: 2006 Velo 1.6i | 2008 Velo 1.6i | 2005 Velo 1.4i | 2006 Polo 1.6i | 2012 Polo TDI | 2004 W203 C200K

Greenz
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Re: Z3 cooling system fail

Post by Greenz »

Dafuq!?!?!?
-2015 Chevrolet Spark LS

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Unobeat
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Re: Z3 cooling system fail

Post by Unobeat »

Tjeeeeer

That Old Radiator has seen better days, pure abuse of such a gem of a car of low kilos.
THANAS wrote:Mix them together to create Shellstrol, and then mix that with Winstrol to create the ultimate, maximum performance oil for your engine.
panic-mechanic wrote:When I build engines and do stuff like this I do it when there is nobody else around, No distractions, No phone nothing so that you don't forget what you should be doing. It's the little things that make them run right. Anybody can slap a basic bottom end together. that is the easy bit. It's all the little things that makes these builds a success or not.

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DJ7
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Re: Z3 cooling system fail

Post by DJ7 »

How some people can do things like that is beyond me.

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Rascal69
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Re: Z3 cooling system fail

Post by Rascal69 »

Yeah guys, there’s people out there hacking away at customers cars.

I’ve got a lot of work planned for the z3:
1. Full engine service
2. Auto Gearbox service
3. Diff oil change
4. Full cooling system refresh: radiator, thermostat, updated aluminum thermostat housing, new waterpump, new water bottle and cap as well.
5. New Ac belt, tensioner, pulley.
6. New V belt , tensioner and pulley.
7. New Tappet cover gasket
8. Front seals on cyl head

There’s a lot of sludge build up in here so I have to run engine flush with new wolf 5w40 oil , then drain out as much of the sludge before Filling up with the LM molygen oil and Ceratec additive.
Current: 2005 E55 AMG
Current: 2007 ///M Coupe
Current: 2019 Fortuner 4x4

Ex: 1998 BMW M3
Ex: 2011 REVO 2 Focus ST - 208wkw & 465nm's (FRnR)
Ex: 1994 E36 328i Track Car (Budler Motorsport built)
Ex: 2011 REVO 2 Mk6 GTI DSG - 200wkw & 452nm's (KAR)
Ex: 2007 REVO 2+ S3 - 12.7s @ 176km/h (Tarlton 2010) and 224km's on 1km (ODI)
Ex: 2006 Velo 1.6i | 2008 Velo 1.6i | 2005 Velo 1.4i | 2006 Polo 1.6i | 2012 Polo TDI | 2004 W203 C200K

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Rascal69
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Re: Z3 cooling system fail

Post by Rascal69 »

Z3 is out the workshop so it’s time to update :

Started collecting parts :

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Began with a service
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Then we started with the cooling system issues. Drained the radiator and the engine block of all the water they had filled when doing the shitty repairs .
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And then started getting the radiator out
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Had to cut this pipe as they stuck it on .
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Called up Bmw and placed an order for a new radiator and that pipe which We cut.


Gearbox oil cooler mounted to the old radiator, will be swapped over to the new unit
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These two seals had an oil sweat, while we were there we replaced them too
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Then both the belts, tensioners and pulleys needed to be replaced, so those where ordered too.
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We then fitted the radiator and the rest of the new components in the cooling system.

We noticed a lot of sludge build up when replacing the tappet cover so we decided to do an engine flush with cheap oil before filling up the more expensive liqui moly engine oil with the Ceratec additive .

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Then we drained the old Geabox Fluid out .
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Dropped the gearbox oil pan and the oil filter
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Cleaned and prepped for the gasket.
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New gasket
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Installed the new filter and gasket and bolted up the oil pan then torqued to spec.
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Filled up gearbox oil the old school way lol
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Checked coolant and top up
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Add Ceratec additive
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Fill up with oil and a new oil filter
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Also drained and filled new oil in the differential
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New belts and tensioner
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Vehicle completed and owner collected. He was Very happy guy after this since he now had confidence in his vehicle and wasn’t afraid to drive back to pta.

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Current: 2005 E55 AMG
Current: 2007 ///M Coupe
Current: 2019 Fortuner 4x4

Ex: 1998 BMW M3
Ex: 2011 REVO 2 Focus ST - 208wkw & 465nm's (FRnR)
Ex: 1994 E36 328i Track Car (Budler Motorsport built)
Ex: 2011 REVO 2 Mk6 GTI DSG - 200wkw & 452nm's (KAR)
Ex: 2007 REVO 2+ S3 - 12.7s @ 176km/h (Tarlton 2010) and 224km's on 1km (ODI)
Ex: 2006 Velo 1.6i | 2008 Velo 1.6i | 2005 Velo 1.4i | 2006 Polo 1.6i | 2012 Polo TDI | 2004 W203 C200K

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Re: Z3 cooling system fail

Post by Belix »

Quite a job there, thanks for the walk-through and pictures.

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