Detonation issue
- Thread starter B1Ad3
- Start date
P
pulsarboby
Guest
are you sure its det and not something else???
EssexAaron
Member
exactly wat i was thinking. most people dont even know the sound of DETMr GTiR said:
well pinging/pinking/detonation i hear as a mettalic tapping noise at low RPM when an engine is pushed. Hard noise to explain but i can hear it when the engine is pushed at low rpm's, at the moment anything below 3k.
Ill be rechecking timing soon to make sure i have not advanced more than 20 degree's.
Ill be rechecking timing soon to make sure i have not advanced more than 20 degree's.
M
modifiede36m3
Guest
Is your car uprated in anyway? if it is you can try some colder running plugs. 1 heat range will remove about 100degrees from the combustion chamber.. the pulsar use a NGK 7 as standrd try an 8 or 9 this will remoive some heat even if it does not solve your problem.
Mr GTiR
New Member
Steve, unless he's running BIG power then grade 8's will do most GTiR's. I'm close to getting on using grade 9's but if I do then that will cause me problems. As my car runs quite rough until the plugs are hot enough but I have put this down to being too rich on start up and cruse.modifiede36m3 said:
Also, if he changes plugs it's just masking his orginal problem. He still needs to find out why it's detting at such low rpm.
B1Ad3 - what is the spec of your engine and turbo set up? How much boost are you using?
EssexAaron
Member
i think by the sound of it hes getting pinking which is often caused at low revs! normally down to a lean mixture, could be tons of things.
The engine is stock with a front mount, its running 10 pound and was been dyno proven to be running 12.1 AFR or somewhere close, have to find the sheet somewhere.
Im in australia and its summer over here so 30 degree and up days i changed my plugs to 8's in the last service to try and lower the combustion temp and it has helped, was much worse last summer from memory.
How are the gtir's from stock low in the revs, are they fine or a bit lean from factory?
Im in australia and its summer over here so 30 degree and up days i changed my plugs to 8's in the last service to try and lower the combustion temp and it has helped, was much worse last summer from memory.
How are the gtir's from stock low in the revs, are they fine or a bit lean from factory?
Fusion Ed
Active Member
This is the standard fuel map:
http://www.fusion-motorsport.co.uk/gtir/nn14fuel.jpg
Blue region is closed loop.
Ed
http://www.fusion-motorsport.co.uk/gtir/nn14fuel.jpg
Blue region is closed loop.
Ed
Cheers for the fuel map but i have no idea how to read one of those.Micra Ed said:
The front mount should be ample your cold air but yes i have a water jet system on the front in the making but is not yet operational.
The hot weather is a big factor in all this i know, i dont think it sa big issue but it is there.
Maybe its just a sign i was pushing the car a little to hard for the hot day?
10 pound is standard boost for the R factory is it not??
Could it be possible its leaning out because there is not as much backpressure from factory due to the 3 inch exhaust so the fuel is getting sucked out. Bad explination but couldnt think how to word it.
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