16 replies to this topic

[basicgreen]

probably done to death but my motor is pinging.. new motor just checked spark plugs they are  one was bpr6efs ngk others are bp6efs ngk. are they the ones i should be using.  dont no how one different. 12 port head healthy motor.. any help would be great 

[N/A-PWR]

Hello Rick,

 

 seen your other thread too, and now decided to say my bit as follow's:-

 

I used the n9y heat in the 9 port head with no problems,

 

having 17 degree idle timing with vacuum advance using the standard points distributor and a 30/70 cam.

 

 

 

 

So I thought, you should swap your distributor out,

 

 and test the normal standard points or electronic blue one and see if that helps.

otherwise, as said before, make sure the timing mark on the harmonic balancer is in the correct position.  

[EunUCh]

The plugs with "r" are "resistor type plugs as in they have a "built in" resistor (or spark gap) inside the plug.

Pingin is usually an advance issue due to "pocket/s" of mix becoming "superheated" during combustion and burning at

very high temps/pressure out of whack with the rest of the charge ? ....where's oljohnno ?

[LJ RB30]

^^^ ooops too bloody slow

 

The "R" in the plug number designates a resistor plug. Used in reduction of radio interference generally speaking.

 

It wont have any affect on the plugs performance.

Edited by LJ RB30, 03 May 2016 - 06:03 PM.

[basicgreen]

thanks i have vk dizzy and it was graphed buy hume timing was set to there specs 18 degrees. and i backed it of bit by bit and still pinging just thinking to start with plugs to see if i have right ones or is there another plug to try   

[SA EH]

How old is the fuel Rick?

And for your info, I'm currently running BP7EY. But the 6 range should be fine.
Back to basics on the timing mate, set the dizzy up firing right on number 1, & check the degrees on the balancer.

[I'm a Red Motor fiend]

Like Bomber said in the other thread you need to know what your total timing is. Is this 18 figure initial or advance? Do you run 98 petrol, how much overlap has your cam got, are you certain your 10.5 comp figure is accurate? Plugs in the 6 heat range are fine and will have nothing to do with your pinging issues.....

[basicgreen]

hi the fuel 98 was drained and new 98 put in have put another 50 bucks in so fresh..with timing we started it and set to 18 like the card from the dizzy place said to. dont no total have to get timing light on it hope this weekend. cam is 647 crow hope this helps.. would lean be the problem pinging to . will put pic up of the spark plugs  

[hanra]

Have you had a timing light on it at all????????

[basicgreen]

yea mate when we started it. set it and it was fine.. drove home seamed ok but bean geting worse.. so i backed timing of a bit then put foot in to it and backed it of bit more did not change. cant put pix up keeps saying to big..rrrrrr.  i have pulled out 1.2.3. plugs out they  look bit lean will take down to engine man now see what he say   

[basicgreen]

 20160504_093807.jpg   9.24K   24 downloads  20160504_093807.jpg   9.24K   24 downloads hope this works

[basicgreen]

just put the word on engine man so will look at timing and carb friday let you no how we go. thanks

[N/A-PWR]

Hello Rick,

 

 found this great read from Grant's thread about pinging, and all the information specified:-

 

http://www.gmh-toran...e-retarded-202/

just put the word on engine man so will look at timing and carb friday let you no how we go. thanks

 

Hope your engine man help's you out.

[LC-GTR-1969]

Did you say you had your dizzy re-graphed by hume performance? If so, I had a dizzy done there but unfortunately it ended up with more advance than intended.

 

They intended for 10 degrees advance in the dizzy, but when I set the ignition to 20 at idle, and checked with the light at 3500 (advance all in by 3000), the actual timing when all in was close to 38- we guessed about 16-18 degrees advance was what was actually in the dizzy.  As you would guess the car was pinking and carrying on with this setting. So moral of the story is don't trust the 'advertised' advance in the dizzy, check it with a light.

 

They were nice blokes and rather helpful but in this instance it seems they put too much advance in it. They did fix it and were more than happy to resolve the matter.

 

BP6 should be fine. You don't need the resister but its still good to run them. The plugs wont have anything to do with the pinking but the mixture would if too lean. Also check for air leaks.

Edited by LC-GTR-1969, 04 May 2016 - 02:47 PM.

[basicgreen]

thanks dave found that the other day and read it.. might re read 

 

yes had dizzy done at hume will check with light friday sounds like this maybe the case will see 

thanks about the spark plugs 

[basicgreen]

very happy to say timing was way out and now no more pinging. time for carby now.. thanks