I got some bosch 7571 plugs for free and wanted to know if they are good for my car its all stock other then bolt ons let me know thanks.

 

Well idk I herd those plugs are bad for lt1 s i'm not really sure why they are but Bosch is not a good spark plug from what I herd. I think it has something to do with the multi-electrode. Im not sure just telling you what i herd.

 

I heard something like that to it was a long time ago tho and never really cared I just had these given to me from a friend that has a store that went under and I do need to swap out the ngks soon.

 

bosch plugs are crap for american cars or any car for that matter , i have run some lil test with different plugs and the bosch +2's and almost every plug that has a electrode that is buried in the ceramic has a weak spark compared to the exposed electrode plugs,

they guy that i bought my Z from had those bosch +2's in it and it ran like *** and i put in some splitfire platinum plugs with the normal electrode not the split one and they are real nice quality SS base and they work great i have had no issues with the split fires

but my fav plugs is NGK's they work great in any car . autolites ,ac delco rapid fires, NGK iridiums , ngk u grooves , ngk platinums , hell all ngk's kick butt lol

just my 2 cents

 

I tried Bosch regular plugs, and they ran good for about 2 months, then fell off rapidly. When changing plugs is so much fun on our cars, I try to change them as infrequently as possible. I personally like autolite platinums (not double platinums). Even though they are F***d related, they have a good mix of life. price, and performance IMHO.

 

A "search" shows they are the correct Bosch plugs for the car, and cost $1.25 each. In effect, you are putting in questionable plugs that are only worth $10. They would appear to be a non-platinum plug, so their life will not be exceptional. Unclear from the descriptions I found whether they are a single-electrode or multi-electrode plug. How many electrodes do they have? The problems people experience with the Bosch plugs seem to be related to the multi-electro design, and in particular the platinum plugs.

Using them, because they were "free" is not a good reason.

 

thank you for the advise I wont use them.