1303wasserbug wrote:very cool, looks like that must be great to drive without having to rev the nuts outta of it. so is that a standard 914 2 litre then? what boost and compression? and how you controlling the ignition timing? very impressed
Thanks guys!
Yes, its actually a bone stock 914 2.0 (type 4) engine; only added single Scat springs and Ti retainers.
The turbo is actually a little too big and I could have better torque down low as the AFR was too rich there, which showed in the log.
Boost is almost exactly 1 bar or 14.5 psi. Boost is controlled by the ecu through a PWM solonid valve.
Ignition is controlled by the ecu (dta S60) as well and boost retard is programmed depending on boost. I have very little ign.retard (3 degrees max, which is 26 advance remaining at 14.5 psi) as the air intake temps stay really, really low, like max 9F higher than ambient...
Turbo is a used suby ball-bearing WRX item (IHI VF34).
Stock CR of that engine is 1:8.0
Should it want to ping, there is J&S safeguard 'Vampire' knock control device under the rear seats but the gauge has not lit up once..
Later this year a dedicated 2,2 ltr turbo-engine is being made (when I get all the parts back in time..), which the turbo should be just erfectly suited for. Glad I tried everything out on a stock engine first.
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