little bit of overlap

[bloke]

sat unwinding after a chaotic day (normal) had an engine on build stand with no plugs in sat under our new super dooper led lights and noticed light coming from the exhaust port. took a minute or so to realise but snapped a quick pic anyway because it might be interesting to some.

 

[JamesBryan]

That'll have some idle chop

 

[frayz]

Chop chop chop chop chop

 

[bloke]

Should be a good one, high comp Pistons, block has been decked and skimmed a fair bit off the head. Hopefully it's near as dam it 13:1 and reasonably long duration cams as well.

 

[JamesBryan]

Should be a good one, high comp Pistons, block has been decked and skimmed a fair bit off the head. Hopefully it's near as dam it 13:1 and reasonably long duration cams as well.

How much can you skim off before belt tension becomes a problem?

 

[bloke]

Will tell you when we Chuck the belt on this one

Always seen to have plenty left on the adjuster to tension them so don't see it really being an issue.

 

[DomP182]

Dull question but what's idle chop?

 

[JamesBryan]

Dull question but what's idle chop?

A throaty idle a bit like a rough idle as the intake and exhaust valves are open slightly at the same time due to the cam profile.

 

[DomP182]

Did wonder, love a throaty rough idle. My SV650S sounded a beast idling with a fuel exhaust