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Royboy66

What i've done to my Car this week!

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3 hours ago, RedRooster said:

I wish you weren't right all the time Nick.  

:ohmy: Oh crap! Me too..... :ermm:  It wasn't me...... honest.....  That's det. Is that plug side or squish side - would guess squish side? Are the others ok or can you see signs?  I was thinking more along the lines of a big hole in the gasket fire-ring through to a water way (which I'm guessing there also was?). 

WTF is with the valve dents in the dome, how come you've only got them from half the valves and why exhaust valves not inlets.  Have you got one of this Witor cams with more lift on inlet compared to exhaust only it's reversed.......

It is (allegedly) possible to get the sump off with the engine (more or less) in situ by raising it a couple of inches.  Looks like no fun at all to me though and never tried it myself.  Have done it on 4 pots a number of times though which is easy enough, if messy.

Were you caning it at the time?

Nick

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I was moving along quite briskly at the time is all i shall say.

Its a TR5 cam, but like you say does look like higher exhaust lift rather than inlet which is odd.

Its on the plug side that hole.

As the garage is a bit full of other projects guess i'm going to have to try getting the sump off in situ, nothing like laying on your back with oil dripping down for a bit of character building.

With all the other pistons having a forged valve cut out i'm thinking they should all be replaced really as who knows how stressed they are & the new set have some machined in.

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You might want to think about changing the valves too - surprised you have any compression after that kind of abuse!  Assuming the lift measures equal between inlet and exhaust, I think the uneven damage is telling you something about your valve timing.  TR5 cam should be symmetrical in lift and timing about TDC - and clearly it isn't.  Can't get my head around whether advanced or retarded at present - going to have to draw myself a picture.

Nick

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48 minutes ago, Nick Jones said:

- going to have to draw myself a picture.

 

If you do please post, I can't make head nor tail of the posted picture, and I've even stood on my head to look at it! its obviously obvious to you but I'm not sure what I'm looking at!

Alan

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Haven't drawn it yet...... was hoping someone smart was going to answer the question so I didn't have to..... :tongue:

Nick

 

PS. this subject needs it's own thread I think......

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