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Home > Help Needed / General Tech Chat > pistons breaking between rings?

welshdan

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s wales

25th Mar, 2008 at 09:05:01pm

hi, the pistons on my brothers 1380 na engine have broken between the rings several times. the pistons are powermax. its running a high lift cam and a high cr. anyone have any ideas as to what is causing this. he has had to replace this piston 3 times. many thanks


welshdan

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s wales

25th Mar, 2008 at 09:05:41pm

.

welshdan

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s wales

25th Mar, 2008 at 09:06:02pm

i have pics, not sure how to upload them though.thanks

Sprocket

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Preston On The Brook

25th Mar, 2008 at 09:17:42pm

Detonation breaks things, pre ignition melts things. However, pre ignition also leads to detonation

I would hazard a gues that detonation has killed them.

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=198065

Edited by Sprocket on 25th Mar, 2008.

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

AllanMcD

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Dalbeattie Scotland

25th Mar, 2008 at 09:18:39pm

That can happen if the pistons hit the head at hig revs or detonation.
Allan

http://www.rabdunn.co.uk/

stevieturbo

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Northern Ireland

25th Mar, 2008 at 10:56:53pm

detonation. Plain and simple.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


danboy

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Doncaster, South Yorkshire

25th Mar, 2008 at 10:59:36pm

As above, wrong advance curve for cam ?
Regards
Dave

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

25th Mar, 2008 at 11:14:28pm

agreed!
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