Are the normal spark plugs ok at higher boost rates, ie upgrading to 14/15 psi

 

and also is there a 'wrong type' to get if running higher boost?

http://www.300zx.co.uk/forums/showthread.php?t=134084&highlight=spark+plugs

try this thread

Had a read of that but when I just bought some NGK's book listed PFR6B-11C's?? not the B's

Had a read of that but when I just bought some NGK's book listed PFR6B-11C's?? not the B's

 

That's cos the B's were made for the US market mate which were found to be slightly different but advantageous.

No suppliers in the UK of these now i know off anyways now that DTA have closed.

Smithy

B plug is longer which helps prevent detonation and spark blow out at higher boost levels.

Does the N/A engine use the same plugs as the turbo engine ?

are the b plugs worth the extra hassle of getting or will the c plugs do the job in a standard tt?

are the b plugs worth the extra hassle of getting or will the c plugs do the job in a standard tt?

 

The C plugs are more than up to the job for both turbo and non turbo zeds, running upto 1 bar with those plugs is no issue either, there are hundreds of zeds using those plugs with boost and without upgrades and have no issues either way, what is important with ANY tuning is the set up and ensuring all of the adjustable sensors are correct and no air leaks etc.

 

Jeff

ok thanks i will put some on order