Engine issue diagnosed... interesting discovery

Engine issue diagnosed... interesting discovery

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Matthew Poxon

Original Poster:

5,283 posts

138 months

Monday 27th May 2019
quotequote all
Afternoon Gents,

September last year my engine developed a knocking sound from what sounded like the top end but it was so loud it was difficult to work out where the sound was coming from.

Below is a video of the noise:

https://youtu.be/yAUSAUnZFjs

I didn't have the time or funds to look into straight away so I SORNed the car for winter and I picked it back up this year. The car was transported to Jody at Python Racing for inspection. I asked him to remove the engine as I intend to refresh it anyway.

It turns out that one of the head bolts had unwound itself and was hitting the inside of the rocker cover on each compression stroke. Jody estimated that the bolt had slowly unwound itself over a long period of time so I have been driving around a V7 for quite some time laugh





Classic Chim

10,945 posts

114 months

Monday 27th May 2019
quotequote all
Wow and great news.
Imagine how fast it really is!
Are you still rebuilding or refreshing it or just putting it back together.
I was ready for the worst for a mo! biggrin
That’s a really clean engine. thumbup

Matthew Poxon

Original Poster:

5,283 posts

138 months

Monday 27th May 2019
quotequote all
Classic Chim said:
Wow and great news.
Imagine how fast it really is!
Are you still rebuilding or refreshing it or just putting it back together.
I was ready for the worst for a mo! biggrin
That’s a really clean engine. thumbup
Hey Alun, I hope you are well sir. I was half expecting to see you at the Cadwell trackday, shame you could not make it.

I have created a separate thread to document the engine build which I will keep updated. If you get bored have a little read:

https://www.pistonheads.com/gassing/topic.asp?h=0&...

Classic Chim

10,945 posts

114 months

Monday 27th May 2019
quotequote all
I might have known and your silence over time has had me wondering what your upto.
Awesome bow

Richieboy3008

967 posts

148 months

Thursday 30th May 2019
quotequote all
+1, very interesting indeed!