mfg Posted August 28, 2015 Report Share Posted August 28, 2015 What advice did Studebaker give to owners of new R3 & R4 powered cars.....to be performed after the first good hot 'run'?....................1) just normal maintenance.........2) Re-set ignition timing.............3) Re-torque cylinder heads.......or..........4) Change-out break in engine oil Link to comment Share on other sites More sharing options...
1963r2 Posted August 29, 2015 Report Share Posted August 29, 2015 (edited) Number 2 for me Edited August 29, 2015 by 1963r2 Link to comment Share on other sites More sharing options...
mfg Posted August 29, 2015 Author Report Share Posted August 29, 2015 Number 2 for me Reasonable assumption!......but that's not it!....Anyone else? Link to comment Share on other sites More sharing options...
brad Posted August 30, 2015 Report Share Posted August 30, 2015 3, they had composition type head gaskets Link to comment Share on other sites More sharing options...
mfg Posted August 30, 2015 Author Report Share Posted August 30, 2015 3, they had composition type head gaskets .........#3 it is!......... The R3 engine in the PBW had to be overhauled because they failed to perform this important step! Link to comment Share on other sites More sharing options...
gwood7 Posted August 30, 2015 Report Share Posted August 30, 2015 Sorry if it is obvious, but what does PBW stand for? Link to comment Share on other sites More sharing options...
mfg Posted August 30, 2015 Author Report Share Posted August 30, 2015 (edited) Sorry if it is obvious, but what does PBW stand for? No problem!....PBW stands for 'PLAIN BROWN WRAPPER'.....The name given to the R3 powered 1964 Studebaker Challenger owned by longtime SDC member George Krem and driven by Ted Harbit. The PBW has done GREAT at recent 'Pure Stock Muscle Car' annual dragrace events!! Edited August 30, 2015 by mfg Link to comment Share on other sites More sharing options...
r1lark Posted August 30, 2015 Report Share Posted August 30, 2015 Didn't Paxton run all the R3/R4 engines on a dyno after assembly......or did I just imagine that? If they were run on the dyno, it would seem that the heads could have been retorqued at that time. Link to comment Share on other sites More sharing options...
mfg Posted August 30, 2015 Author Report Share Posted August 30, 2015 Didn't Paxton run all the R3/R4 engines on a dyno after assembly......or did I just imagine that? If they were run on the dyno, it would seem that the heads could have been retorqued at that time. Hard to say r1, but an 'important' notice was sent out by Paxton regarding engine break in, which stated the cylinder heads should be re-torqued after the first good hot run-in. My guess would be the 'scalloped' upper cylinders found in R3 & R4 engines (to clear the larger valves) may have had something to do with this. Link to comment Share on other sites More sharing options...
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