Modified Engines what plug ratings u running ?
Discussion
I changed from NGK B7ECs to B8ECS when using the nitrous but ended up leaving the plugs in and they ran fine. I will be looking to using 9's when on large amounts of gas at the strip but will refit the 8's for general use.
Maybe not applicable but just to show a cooler plug than specified can run fine in an engine with only mild mods NA.
What plugs are you running?
Maybe not applicable but just to show a cooler plug than specified can run fine in an engine with only mild mods NA.
What plugs are you running?
Edited by dbv8 on Tuesday 5th April 07:04
I need to check but think they are 9 as V8 dev fitted. I was going to renew the plugs are I have ran the car but the wideband lamdas are knackered due to the position on the ACT manifolds. I have now relocated them in a downward position as suggested by NTK. The result of this is the car has been running really rich so I was going to check to see if any of the plugs are fouled.
The spanner is not so important, most 3/8" sockets will be OK (thinner wall the better) and some wobble extensions + a flex handle wrench (cheap 6" bendy handle affair is fine) I find.
The most important thing is care and patience offtool using the tools IMHO, cleaning & slipping the threads so that you can spin plugs in nearly all the way by hand. Any slight angular difference and they'll cross thread - don't be too eager to wind them in! The sockets / spanner outer dias can also gall against the head casting easily so just frequently wiggle the tool rather than force anything. Final torquing is only really a nip you should not need 'massive' tools for plugs.
ETA: submit a question to NGK, I asked them some things recently, then their technical folks rang back next day and were happy to discuss at length what they could offer from the product range.
The most important thing is care and patience of
ETA: submit a question to NGK, I asked them some things recently, then their technical folks rang back next day and were happy to discuss at length what they could offer from the product range.
Edited by spend on Tuesday 5th April 08:02
Hi Nigel. I run B8ECS on mine, no probs. Plugs are quick and easy to change, especially with the ACT manifolds as they have better clearance. The only place you may struggle is on cylinder number 7. This can take a bit of jiggling, but all can be done with the plug socket that comes in a halfords professional 1/2" socket set.
SILICONE KID said:
Why do you need R rated plugs with after market ECU`s? im useing B7ECs plugs with megasquirt...and why 8`s
Helps avoid problems with electromagnetic interference that can cause ECU resets or corrupt data, especially if non-resistive leads and/or shrouds are used.8s because they are slightly harder (colder) plugs better able to cope with the harsher spark demands in a tuned engine with higher combustion pressures etc, and because NGK don't make a resistive version of the B7ECS.
Your engine would have made 340hp with them
hiltonig said:
ok for those of you running P38 coil packs what plugs u running ??? need to know as I reckon I am running B9 colder plugs non resistive which maybe fouling in normal running.
Nigel your plugs are definetly resitive, they are an iridium 9 rating, they really shouldnt foul under normal running, because of your engine i went for 9's over 8's purely because your cylinder temps are going to be very high, by all means fit a hotter plug but if it melts and destroys a piston be it on your head!!, seriously get it running right first, by all means bring the car down to me and i will map the car on the road for you.
v8 racing said:
Nigel your plugs are definetly resitive, they are an iridium 9 rating, they really shouldnt foul under normal running, because of your engine i went for 9's over 8's purely because your cylinder temps are going to be very high, by all means fit a hotter plug but if it melts and destroys a piston be it on your head!!, seriously get it running right first, by all means bring the car down to me and i will map the car on the road for you.
Yes this sounds like a plan , i have the motec software plugged it in last nite and the lambdas look fine with no errors, its only got to be fueling that need adjustingGassing Station | Chimaera | Top of Page | What's New | My Stuff