mfg Posted August 23, 2014 Report Share Posted August 23, 2014 What was the 'trick' the Granatellis used to cut down on internal engine friction in the R3 and the R4 engines? Link to comment Share on other sites More sharing options...
Guest dapy Posted August 23, 2014 Report Share Posted August 23, 2014 No trick...just good old STP "The Racer's Edge"... It's not just for racing anymore. Link to comment Share on other sites More sharing options...
mfg Posted August 23, 2014 Author Report Share Posted August 23, 2014 No trick...just good old STP "The Racer's Edge"... It's not just for racing anymore. Good answer,....no doubt STP was used.....but there was something else...'mechanical' Link to comment Share on other sites More sharing options...
brad Posted August 24, 2014 Report Share Posted August 24, 2014 thicker oil increases friction, no matter what the snake oil salesman tells you. Link to comment Share on other sites More sharing options...
mfg Posted August 24, 2014 Author Report Share Posted August 24, 2014 Any other thoughts here? Link to comment Share on other sites More sharing options...
mfg Posted August 24, 2014 Author Report Share Posted August 24, 2014 No 'R3' experts in the house? Link to comment Share on other sites More sharing options...
brad Posted August 25, 2014 Report Share Posted August 25, 2014 The Forged True pistons were a bit looser (in the bores), and the wrist pins were floated in the pistons. Link to comment Share on other sites More sharing options...
mfg Posted August 25, 2014 Author Report Share Posted August 25, 2014 The Forged True pistons were a bit looser (in the bores), and the wrist pins were floated in the pistons. Good info!....The 'trick' I was looking for was this.......Expander behind oil rings was left out by the Granatellis. Link to comment Share on other sites More sharing options...
brad Posted August 26, 2014 Report Share Posted August 26, 2014 here is the rings they came with......looks like expanders to me! Link to comment Share on other sites More sharing options...
mfg Posted August 26, 2014 Author Report Share Posted August 26, 2014 here is the rings they came with......looks like expanders to me! They may have experimented with this for their racing efforts....Engine B-83 did not have expanders. Link to comment Share on other sites More sharing options...
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