MRX Short block aux fuel

[shouldbeasy]

Coolant expansion tank cracked then overheated then head gasket

Very odd.

WHY did it crack? Any thoughts on that?

Bummer. You 'just' got it going!

 

[jeff]

Just read your build thread. Great job. Sorry to hear about the recent engine issues. Hope you get it sorted out.

 

[zumakid70cc]

Very odd.

WHY did it crack? Any thoughts on that?

Bummer. You 'just' got it going!

Almost sounds like the head gasket failed the the excessive pressure blew the expansion tank to a point. So basically very lucky it didn't just cook the motor since you just built it. I bet u could have the cylinders bored just enough to get rid of the scoring in #1.

 

[shouldbeasy]

Almost sounds like the head gasket failed the the excessive pressure blew the expansion tank to a point. So basically very lucky it didn't just cook the motor since you just built it. I bet u could have the cylinders bored just enough to get rid of the scoring in #1.

Good call!!

Otherwise it was damaged when re-installed I guess... But even then, there would be a considerable coolant leak (noticeable) where as if it was burned through combustion and 'slowly' siphoned off it wouldn't be noticeable unless you popped the hood to check coolant.

 

[zumakid70cc]

Good call!!

Otherwise it was damaged when re-installed I guess... But even then, there would be a considerable coolant leak (noticeable) where as if it was burned through combustion and 'slowly' siphoned off it wouldn't be noticeable unless you popped the hood to check coolant.

That's kinda what I'm thinking.
On a different note is there some sort curse on our cars???

 

[TyphoonFiST]

That's kinda what I'm thinking.
On a different note is there some sort curse on our cars???

The only curse is being one of the Best economy hot hatch's of the past decade.....

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[zumakid70cc]

The only curse is being one of the Best economy hot hatch's of the past decade.....

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Just checking cuz I was just in an accident

 

[TyphoonFiST]

Just checking cuz I was just in an accident

Hopefully everyone is alright.

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[zumakid70cc]

Car is a little banged up but me the wife ND baby are ok lil shaken tho

 

[MRX330]

Very odd.

WHY did it crack? Any thoughts on that?

Bummer. You 'just' got it going!

Old plastic in hot conditions for 5 years

 

[MRX330]

Either easy it’s getting torn down and fixed along with a new Spec clutch, wheel bearings and the lsd

 

[zumakid70cc]

Oooo lsd which are you going with

 

[MRX330]

Oooo lsd which are you going with

Mfactory sitting on the shelf at CPE

 

[shouldbeasy]

Old plastic in hot conditions for 5 years

If we’re calling 5 year old plastic brittle then I’m in for s world of hurt coming from Toyotas.

 

[MRX330]

Well replacing the tank is part of the recall so they’re not replacing it because it lasts forever

 

[MRX330]

So I finally found a car carrier and the car will be back at CPE in a week or so. This was an expensive non vacation vacation 💰💰💰

 

[Se7eN]

Old plastic in hot conditions for 5 years

So now I'm going to go ahead and check mine out every day untill I can get a new one or an aluminum one.

 

[Sekred]

Any detonation issues when you were tuning after the rebuild?.
Detonation or pinging can cause the head gasket to fail (the fire ring splits), combustion pressure (plus 1000psi) enters the cooling system and forces the coolant out usually through the overflow and the engine overheats very quickly. Typically the cylinder head cracks and pistons may overheat and seize as well.

 

[MRX330]

Any detonation issues when you were tuning after the rebuild?.
Detonation or pinging can cause the head gasket to fail (the fire ring splits), combustion pressure (plus 1000psi) enters the cooling system and forces the coolant out usually through the overflow and the engine overheats very quickly. Typically the cylinder head cracks and pistons may overheat and seize as well.

The Ford tech took the head off and determined it was the head gasket and neither the block or head was cracked. I haven’t looked at it so I don’t know. I’ll get more information when Mitch looks at it.

 

[Quisp]

https://www.maperformance.com/produ...t98ot_ZlTTrn6Jj-kqdWzcQwJLDy-ClEaAnusEALw_wcB

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