Quote:
Originally Posted by MSTiFK8R
I recall some questions, but never seen any direct replies from you - what would be the target boost and target whp\wtq with you kit, which are your estimates?
Would it make sense adding thicker head gaskets to drop the compression down, which would allow for more boost?
But again, this comes to the strength of the internals, which doesn't have any descent statistics yet...
BTW thanks so much for this stealth approach for the design
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Currently, 4~5psi.
While we have general ideas of what is going to be doable for power figures, I'm reluctant to give any figures until we've decided on a final turbo sizing, and we've had a lot more testing done.
To give an example, our turbo kit on the Impreza 2.5i adds between 70-100whp, roughly doubling the output, on about 5psi of boost. That's on a 2.5-liter with 10:1 compression. Upping the boost a bit higher would give us larger power figures to boast about, but the truth is that 5-6psi is the maximum you want to run and remain reliable on a stock engine.
Reliable, of course, is a relative term. For some people, if the engine holds together for 20-30k miles, that's reliable enough. The Outback 2.5i here at the shop that we fitted the turbo kit to, two years ago, has
199,000 miles on the odometer. That's what we aim for with our kits.
In regards to the question about head gaskets, it's theoretically possible that would help. But we won't know till it's done. From experience, 90% of the people fitting a turbo kit will never open the engine up. We will have options available for people going much further.