Plug suppressors.....

[mikeb]

I am thinking of changing my plugs and ignition leads and was wondering about adding the metal plug suppressors.

Are these necessary? Do they protect the plug from manifold heat or what?

MikeyB

[GreenV8S]

mikeb said:

Are these necessary? Do they protect the plug from manifold heat or what?

Yes, and yes.

[Rum Runner]

Check out castle race engines leads they do there own none suppressed shields.They look very good , probably my next purchase . I had magnecors on the last car. http://www.castle-race-engines.com/index.php?f=dat...

[mikeb]

So they are strictly for prolonging the life of the plugs, by protecting them from the manifold heat? Did they fit these to Griff's as standard then as mine did not have any fitted when I picked the car up (4L Pre-cat).

Resistance or non resistance any difference in terms of effecting the plug perfomance??

MikeyB

[GreenV8S]

mikeb said:

Resistance or non resistance any difference in terms of effecting the plug perfomance??

Ideally you want either the leads, extenders or plugs to be resistive.