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 861 Posts Member #: 951 Post Whore Bromsgrove |
22nd Apr, 2013 at 07:50:26am
An old topic I know.However this is my second failure in the same odd way.The symptoms are only running on 3 cyls from cold start for the first few seconds.Taking the head off revealed a failure from the coolant hole between 2 & 3 on the tappet side,but no apparent failure of the fire ring.I tend to get afterboil on shutdown which pressurises the coolant system,more so now I have a 20psi cap on.Whilst running there is no obvious sign of gasket failure such as clouds of steam,loss of power,emulsion in the oil.Anybody offer any thoughts/advice on this please? 'Where does the engine go?' |
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 3673 Posts Member #: 9300 Post Whore Quarry Bonk |
22nd Apr, 2013 at 07:52:38am
Warped block/head? On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
22nd Apr, 2013 at 08:13:33am
Sounds like you need to keep your coolant moving after shutdown. On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd Apr, 2013 at 08:28:37am
Sounds under torqued. Have you checked your wrench? Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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861 Posts Member #: 951 Post Whore Bromsgrove |
22nd Apr, 2013 at 12:54:58pm
Planning on fitting an electric pump wired to the timer to run after shutdown,so was hoping this might help.Must check the torque wrench.Thanks guys. 'Where does the engine go?' |
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41 Posts Member #: 10373 Member Walsal |
22nd Apr, 2013 at 02:36:09pm
On 22nd Apr, 2013 steve1275 said:
An old topic I know.However this is my second failure in the same odd way.The symptoms are only running on 3 cyls from cold start for the first few seconds.Taking the head off revealed a failure from the coolant hole between 2 & 3 on the tappet side,but no apparent failure of the fire ring.I tend to get afterboil on shutdown which pressurises the coolant system,more so now I have a 20psi cap on.Whilst running there is no obvious sign of gasket failure such as clouds of steam,loss of power,emulsion in the oil.Anybody offer any thoughts/advice on this please? |
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Forum Mod  4828 Posts Member #: 154 Post Whore Midlands |
22nd Apr, 2013 at 02:49:13pm
I've had a head get pinholes in the valve seats that gave exactly the same symptoms On 20th Oct, 2015 Tom Fenton said:
Well here is the news, you are not welcome here, FUCK OFF. |
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 9326 Posts Member #: 59 First mini turbo to get in the 12's & site perv Herefordshire |
22nd Apr, 2013 at 04:44:25pm
On 22nd Apr, 2013 Nick said:
I've had a head get pinholes in the valve seats that gave exactly the same symptoms I've also had this when my repaired hole in the inlet started leaking ever so slightly |
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861 Posts Member #: 951 Post Whore Bromsgrove |
22nd Apr, 2013 at 09:13:13pm
I'll keep you posted on the findings when I pull it down later in the week.Thanks again for the comments. 'Where does the engine go?' |
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861 Posts Member #: 951 Post Whore Bromsgrove |
23rd Apr, 2013 at 06:11:45pm
Hmm,gasket failed in exactly the same way as the last one.Torque seemed a bit low as I removed head,but torque wrench spot on.Head flat,so put on new gasket with silicone sealing spray and torqued to 75NM.Will rebuild and fire it up with NO coolant press.then retorque and fit aux. coolant pump. 'Where does the engine go?' |
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 7265 Posts Member #: 1268 The Boom Boom speaker Police! Essex |
23rd Apr, 2013 at 06:43:38pm
What's the theory behind starting it up with coolant before retorquing?
In the 13's at last!.. Just |
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 4890 Posts Member #: 1775 Post Whore Chester |
23rd Apr, 2013 at 06:45:50pm
To let the surfaces of the headgasket get hot and seal. I run a supercharger and I don't care the TB is on the wrong side.
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861 Posts Member #: 951 Post Whore Bromsgrove |
6th May, 2013 at 03:16:53pm
Bit of an update.Back together and retorqued head after 30 mins gentle running and 1 hour to let all the oil drain down.Most nuts moved about 1/8 turn up to 1/4 turn.Seems ok so far.Fitted an aux. water pump from a sprinter van between heater matrix out and turbo in.Also fitted it to a timer so I can run it on 10 mins after shut down.Tried this after a quick blast - the fan came on for a bit as usual,then the temp gauge climbed slowly until the fan came back on about 5 mins after shutdown,so seems to be working.Also modified the coolant cap with a weaker spring - now about 5-10 psi instead of 20. 'Where does the engine go?' |
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