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Surfacing Cylinder Head ???????????????
Posted by Alain(Luxembourg) (more from Alain(Luxembourg)) on Tue, 15 Jan 2002 09:01:31
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Perhaps you remember I had a lot of trouble getting my '94 AERO running correctly esp. when trying to get full boost w/o cutting back almost immediately. Also the APC needle used to bounce up and down in the dotted part of the gauge. Yesterday I told about these problems to a Saab Dealer Mechanic in Germany and let him go for a test ride with the car. His conclusion was that the head must have been machined (as the gasket had been done) which, as he told me, is absolutely forbidden on TRIONIC cars esp. MY 93 and 94. Due to the higher compression ratio the DI box now detects early knocking and the ECU corrects the timing and backs off boost.
Can anyone confirm this and is there a service info on that topic ???
Tia
Alain
NB : This morning I contacted the mechanic who did the gasket job and he confirmed the head has been surfaced !
posted by 193.91...
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