Pinking?
Author
Discussion

dempsey

Original Poster:

297 posts

239 months

Friday 1st July 2011
quotequote all
4.5 Red Rose -
Under load at lowish revs I'm getting a metallic pinging noise.

When I last had this on a 'normal' car it was pinking caused by the
ignition timing out.

I'm using Shell V-Power so it shouldn't be a low octane issue so in my limited knowledge it could be weak fuel/air mixture or ignition timing out.

Anyone else had this? if so what was the cause and the resulting cure?

ukkid35

6,411 posts

202 months

Friday 1st July 2011
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Why don't AJPs have knock sensors? It's not like they add any significant weight (or cost).

ridds

8,372 posts

273 months

Friday 1st July 2011
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They add lots of cost unfortunately. You need am ECU that can handle the signal and then adjust the spark accordingly. You need to spend a LONG time on an engine dyno to do it correctly along with about £50K worth of instrumentation (in cylinder pressure sensors and a software package to process that data). You can rent some of this but the signal processor kit is about £3k a month.

Yes you can strap a sensor to the block and it will work ish, but you'd be asking TVR for a new engine when it went pop. wink

Dave 500

7,882 posts

271 months

Friday 1st July 2011
quotequote all
Mine did it when I first got it, had it mapped and it's been fine ever since.