im no expert but like said before screeching doesnt sound serious. it doesnt sound internal either. i have yet to hear a motor screech.

 

I have a 94 SC300 with the 2JZ-GE. I am planning on changing the plugs soon. I need to get some money together first. What would you recommend for performance plugs that last? NGK Iridiums? I was looking at getting those. I will flush the oil again soon too. What belt would you recommend changing, the serpentine belt and how much does it cost?

 

True......

 

serpentine belt or "accessory belt". usually about 20-30 bucks at your local store. If the have the gatorback belt (usually like $5 more than the regular one) get that one. I run that belt on my 95 and its never even made so much as a squeak.

NGK Iridiums are good plugs. They will last a long time on a stock car. The regular non Iridium ngk will get the job done too, but wont last as long relatively (they still last quite a long time if you aren't turbo).
on the SC300 I personally go with what lasts the longest cause its such a pain to change out the plugs. to me its not worth the 2 hours labor to save a couple a bucks on plugs, but then again my car isn't stock anymore.

 

Cool sounds good thanks man.

 

seafoam in your oil for a 100 miles is fine that's not the problem.the noise may be your belt.no big deal.every year when it starts to get cold my belt starts squeling a little bit.but when weather warms up its fine.i see you live in md and i lived their and still visit often and i know what early mornings and weather is like this time of yr.also it maybe a pulley.

 

Yeah I am probably going to replace the belts soon enough. The noise is just annoying when I start the car lol.

 

I'm not a fan of seafoam, but I do like Zmax. It says it's "safe"....