[s-cars] What is RELIBILITY MAXIMUS LIMITUS for an old UrS4

[Bobby Richter]

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Hi,

I have a stock '94 UrS4 with 186,000 km on the clock and have done the
following:
1. Fitted new head, stainless steel head gasket and new valve guides,
seats etc. (head was cracked - No 5 cylinder)
2. Fitted RS2 Turbo on standard manifold. (Old K24 bearings went)
3. Fitted revised Bosch Bypass Valve.
4. Revised ECU Boost table to max boost of +1.4 bar (20.5psi) then drop
to +1.35 at 5500rpm and above.
5. Revised ECU fuel/Advance tables accordingly.

My question is: How high can you go without breaking a conrod, burning a
valve or holing a piston? Am I being conservative at +1.4 bar or should
I upgrade to 3.0 bar pressure tranducer and go for more boost on a
standard engine layout? What is the next logical step?

Cheers,
Bob

==========================
Bobby Richter (Technical Manager)
Light Edge Technology (Pty) Ltd.
Tel: +27 21 510 8270 (x261)
Fax: +27 21 510 0300
http://www.lightedge.co.za <http://www.lightedge.co.za/>
==========================