10:1 compression is not a real concern
it's bad tuning that will kill the engine.

There are plenty of other honda with 10:1 compression ratios and high amount of boost. You will certainly get better power than other engines with lower compression at the same amount of boost.

What is the shape of your pistons' tops?
Can you take a picture of the top of the Arias pistons?

 

For anyone intrested in the block i had purchased with the pistons and everything, here is the link

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...K%3AMERFB%3AIID

Any info on the best setup i should go for would greatly be appreciated.

Jimmy

 

You are right more boost, wrong about more stress. Yes the SC is making more boost at that point than the turbo is, but the engine is seeing the exact same amount on both systems (actually vacuum at cruising speeds). The extra boost on the SC is bled off with the BOV.

 

Not sure of the background of that statement but I suspect it was said within a certain context or set of assumptions. As Kane said, boost is boost.

The difference between a turbo and a centrifugal SC at a given boost level is that the SC will only generate this boost at redline and WOT whereas a turbo could conceivably be producing this boost from midrange up. That is the advantage of a turbo.

As to why this block is no good for boost is beyond me. You can run the SC and mild turbo set ups on a stock block at 11.1:1 compression ratio so one would assume a built block with lower compression would be fine. Unless the piston design or coating is not compatible. I suspect the person who told you this is old school and thinks any FI set up should be 8:1CR. We know this is not the case.

So unless there is some specific reason from Arias (or problem with the build) I would say you can run any forced induction set up that people are safely running on a stock block with a much higher safety margin.

 

I have no experience with the S/C's at high up boost levels. I figured since there's not going to be a pressure difference between each side of the butterfly plate (since the throttle plate is going to be open) the BOV will stay closed.

 

Will somebody check out the link i provided and tell me if that block i purchased was a good buy or not a good buy. I got it at a great price with the pistons and so forth i was gonna just stroke it but they told me it was going to be a mission.

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...K%3AMERFB%3AIID

^^^^^^^^^^^^^^^ PICSSSSS

 

Ne one else can provide me with some info. Would be appreciated

 

Come on Jimmy. If you paid $800 for it as the auction suggested it could have a crack up the side of the block and it'd still be a decent buy.

The one thing you don't get when you buy from ebay is that feeling of confidence you get from buying from a manufacturer. I'd suggest having it inspected and possibly pulled down and reassembled by someone you can trust (and not the person who told you it was good for SC but not for turbo). Should be a great base for a turbo motor.

 

The block you purchased looks good if it has Darton sleeves as claimed.
The bores are 89mm so it would be around 2100+cc. This is the widest I would go. Any wider and you are better off using the long block for NA for reliability. The pistons looks good.

IMHO I would run around 10-14.7 psi of boost on this engine safely to around 8500rpm. You are better off with a good reliable turbo kit with a good intercooler. Tuning is really important so don't take short cut. Do everthing right the first time and you will have a wicked f20c.

 

Get a vortech, 750cc's, EMS and a 14lb pulley and you should be in the 400hp range.