Asura

You may want to talk to Autowave. I am not disputing what Brett is saying. I am almost certain they had the engine contracted out and did the installation.

Scorpion

I don't quiet understand this statement... 14 psi is 14 psi no matter what yuor displacement is. Now the size of the pulley is going to change...the differance in a 6000rpm redline verse a 9000prm redline (crank speeds). The compressor wheel is the same though so it's max boost is going to be the same no matter what engine it's bolted to IMO. If this is wrong please correct me.

l8brakr

Scorpion, I don't think the actual psi is the issue. I'm sure the unit can handle more psi without failing but the rpm it has to spin to produce that much boost on a S2000 is the problem. 14psi is only a reference number on a particular engine. To create 14psi on a 4.0 liter motor with the same flow capability of an F20c will take double the air volume so no 14psi is not 14psi.

Silver S2k4

you say 14# is not 14#s? so would it actually boost less on a v8?

I guess the amount of boost coming from the SC would be the same, but the amount of boost going to each cylinder would be much less. Right?

Scorpion

Now see, that I can agree with. But I was talking about the efficency (sp) of the actual compressor...not the amount of air flow per cylinder. If you can make 14 or 20 psi on a mustang (boost read at mani) then you should be able to create the same amount of pressure on the F20c. It's just a lot of math

greenzj

If you do the math, the Novi 1000 will run out of it's efficiency range (55,000rpms) before reaching 14lbs. Crank pulley / blower pulley x 3.54 = a number, times that number x redline = rpm's. I talked with Drew at Tech2 Motorsports and he said "about every .25" is 1lb of boost." With that said I had a 3.19" pulley manufactured which I think it will be around 11lbs.

Scorpion

Go here...http://www.superchargersonline.com/forum/t...p?TOPIC_ID=3065

And as far as doing the math...there is actually no need to do it, unless you want to know what pulley size you need to get max boost (spinning the compressor at 55000rpms). Of course I just looked for comp maps for the Novi but couldn't find one.

l8brakr

It's about the volume of air not psi. A motor is essentially an air pump. The more air it can displace and mix with the proper amount of fuel the more power you are going to make. At 55k rpms that blower can only move a given amount of air molecules, how much the engine is able to flow before it gets backed up is where psi begins to build and can be measured. Whether if it boosts less on a V8 depends on the V8 If you look around here you'll see where the guys that have head work make more power with less psi of boost because they are able to flow the volume needed without forcing it in so hard.

Scorpion

Makes sence...thanks for the information

landfighter

l8brakr: How many miles did you have on your engine at the time of s/c installation? Also,are your internals completly stock? I would like to install the comptech high boost package at some point. I currently have 28k miles on stock engine,but by the time my "piggy-bank" is full I might have 35k+. I am wondering, in your opinion, if there is a point at wich it would be to "risky"(as to high mileage) to go "high-boost without additional engine work/rebuild. I would like to do clutch and diff up-grade at the same time,and just trying to anticipate cost.