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giallofly

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4436 Posts
Member #: 164
The Stig..

Newport Pagnell

20th Oct, 2004 at 10:23:56pm

I thought i had blown the Head gasket at Combe out it turned out to be a bent exhaust valve on 4.

New one in place and ready to rock for the weekend!

Cheers to Mr Morspeed for doing some overtime to sort it out at such short notice..cheers Simon!

Edited by giallofly on 20th Oct, 2004.

On 21st Jan, 2011 fastcarl said:

therefore acheiving two things , a sore knob and a beer bellyl

dan
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Post Whore

Near Lincoln

20th Oct, 2004 at 10:38:13pm

excellent news

any particular reasons given for the valve bending? or was it just one of them random failures?

giallofly

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The Stig..

Newport Pagnell

20th Oct, 2004 at 10:45:36pm

No apparent reason, i have ran the same head deck clearances etc for along time, maybe the guide got to hot and gripped the valve. The piston did the damage but hardly a mark on the piston. A new 30mm stainless valve was fitted the the guide re-reamed to size..sorted!

On 21st Jan, 2011 fastcarl said:

therefore acheiving two things , a sore knob and a beer bellyl

AlexF2003

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AFRacing LTD

Newbury, Berks

20th Oct, 2004 at 11:01:32pm

how weird!

Glad you got it sorted so fast!

What you up to this weekend?

Alex

AlexF

giallofly

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The Stig..

Newport Pagnell

20th Oct, 2004 at 11:08:55pm

Something for Charity mate!!

Combe...

On 21st Jan, 2011 fastcarl said:

therefore acheiving two things , a sore knob and a beer bellyl

Jimster
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455bhp per ton
12 sec 1/4 mile road legal mini

Sunny Bridgend, South Wales

20th Oct, 2004 at 11:55:27pm

good news jon, see you on the weekend my self, but my car will not be ready sorry.

Team Racing

On 15th May, 2009 TurboDave said:
I think the welsh one has it right!


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minimark

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newcastle

21st Oct, 2004 at 05:21:57am

very lucky !!

Everyone knows that instructions only have to be read if the thing doesn't work....


iain
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Sold the turbo and seeing what the C20XE can do!

Near Lincoln

21st Oct, 2004 at 08:02:30am

Was lucky but good that it was a nice easy fix.


Miniwilliams

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Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place

21st Oct, 2004 at 11:15:03pm



Jon when your head was last off and the guides replaced did you have the seats professionally cut again?

I ask because I had the same thing Num 4 ex valve kept bending, (3 times in a row) this was I think because it wasn't seating in the seat 100% flat and was making the valve move to the side a little every time it seated, this in turn might have heated up the guide through the extra side loads on it and it made it stay open, and the piston came and bent it. As the valve was marked an pitted on one side, with the other side smooth like normal.

I say this as a few days after it happened again and I thought like you the guide was a little tight, so I had it machined out a little, as you can see it made NO difference.

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