Hey im really considering on going forced induction, I recently bought a built bottom end. Currently bored out, Darton Sleeved, and Arias Pistons with a 10:1 compression. I've been told that those pistons arent going to be to well for boost but will be well for a supercharger. Any Information would be greatly appreciated.

Jimmy

 

A supercharger and a turbo both make boost so who ever told you that is wrong.

The compression ratio plays a direct role in how much boost you can run and not if it's S/C or T/C. You can run about 13psi on pump gas with 10:1 compression without much of a sweat. No need to really worry about the ring gap or even bore diameter since they shouldn't be an issue with the limit the compressio ratio would impose.


Getting the built block and slapping on a ready made kit like the lovefab turbo kit or the comtech S/C with that block would be much safer than a stock block though. You'd definately have that ease of mind. ~400whp on pump would be feasable too.

 

Thanks, Kane im looking to get 400 to the wheels but i decided i might just go with the S/C casue i dont want to be tuning it all the time and have to be worring bout cause it is my daily driver. So i might just have to debate getting a comptech or a vortech ive seen big numbers from a couple members with the Vortech, what you think.

 

if you do it right with a turbo you won't have to worry about maintenance. With the SC you still have to worrry about belt tension and replacement.

 

To get 400 whp with a s/c, you still need a lot of tuning. Im dealing with it now, not fun when your tuners 2 hours away.

 

400whp on a S/C takes pretty much the same money, time, effort as on a turbo.

 

Ya but in the long run what's gonna be more problems, or issues, a turbo right. Cause i read that most people get a s/c for the reliability and not having to worry as much, as well for a daily driver

 

I think they're mostly saying it's more reliable when comparing stock SC vs. stock turbo. But if you're talking about reaching for 400whp, you're still going to have to do a lot of work. I really think it's a toss up. If I was you and had the built motor, I'd go with the turbo. It'll be much easier to reach 400hp and if you get a good tuner, you should be fine.

Even with a supercharger, you'll still be facing the same issues as far as getting more power...bigger injectors, fpr, engine management, no backyard tuning! Then you have to get a smaller pulley and deal with belt slippage/wear and what not. I would honestly go turbo if i were you.

Just my 02 cents.
Dave

 

You pretty much are faced with the same number of issues (not the same type of issues) as a turbo at that point. To reach the 400whp mark safely on a S/C it actually ends up costing more as well.

Stock for Stock, the S/C pretty much takes the cake as far as reliability goes. Once you get a turbo setup tweaked and tightened properly, it's pretty much just upto the grade of gas and the tune. Both the S/C and turbo will make boost pretty early in the RPM range (but a turbo will make more of course so the engine sees a larger load all the time). I think at cruising speeds, the S/C's at 4k RPM's with a pulley for 400whp (that's 3.25" right?) it is actually making boost going 70mph and cruising. This actually puts MORE stress on the engine than a TC since a turbo spool up is load dependant and a cent. S/C is RPM dependant.

Once you go past a certain point, the S/C loses a lot of it's benefits. 400whp on a S/C is still more controlable than 400whp on a TC though. I know sideways has a great supercharger setup on his car and a couple of people who've gotten a ride in his car loved it. I don't know how many miles he's gotten on it so far, but it'd be interesting to know what things have worn out - S/C bearings, crank bearings, pulley bearings, etc.

It's really upto what powerband you want at the 400 mark. They've pretty much leveled themselves out evenly at that point. A S/C will probably cost you more than lets say the lovefab kit and a boost solenoid to get the 400. That would probably be your biggest decision maker -- the cost.

 

Well im not really trying to break my self with the payment but i just wanted some info casue the motor is sleeved with the 10'1 pistons that is what was my major concern. The guy i bought the block from said he maid 390 on 15psi on a supercharger. I got it at a good price so im just debating on making a decision for a Turbo or Supercharger just dont want it to be in the shop so much casue it's my daily driver. I guess i'll be happy with 350-400.