Warrior1876

What rpm does a centri s/c usally kick in an what about a turbo.

tbirdscwd

centri blowers do not "kick in" at all. They build boost as the rpms rise. Starting around 2500-3000rpm when full throttle you will start to see boost pressure (1psi) and it will build more and more pressure as rpms rise.

I am not the most knowledgeable about turbo setups, but I know the rpm where you will reach full spool depends a lot on the choice of turbo size and the impeller designs. Once a turbo reaches full spool, you should make full boost pressure from there until redline.

dimebag

Just like w the turbo, a centri depends alot on sizing as well... generally u can expect a fair amount of boost at 3000 and it to climb from there

ddmsgtr1

The blower will depend on the blower (gear ratios, CFM, etc.) and the pulley size mostly. The turbo will depend on size and the A/R ratio of the housing among other factors.

piledriver

You are always " in boost ", but my Novi 2000 kicks in like a mule with my 373's at about 3000 rpm, and there is no drop off at all, all the way to redline. Red line comes up really quick in 1st and 2nd, I am into 3rd gear in less then 5 seconds.

oxfordgt

It all depends on your setup with a centri. My novi 2000 was pullied to make 23lbs of boost. At 2500rpms I was making 10lbs and climbed to 23lbs by 6500rpms. It hit harder then some turbo cars I rode in.

Warrior1876

I appreciate the feed back. The reason i was asking was because i read a mustang magazine that said the boost did not come in until 5k rpm. Maybe they meant that was when the boost was at its peak. They were using a procharger.

Warrior1876

Also Ox was that on pump gas with that amount of boost.

mustangmancp

I dont' think those numbers were on pump gas...i know he was running meth injection...but i think the octane was higher then your regular 93 octane lol.

swarthyfellow

Yeah unless his C/R was like 4:1