mfg Posted August 23, 2014 Report 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?
Guest dapy Posted August 23, 2014 Report Posted August 23, 2014 No trick...just good old STP "The Racer's Edge"... It's not just for racing anymore.
mfg Posted August 23, 2014 Author Report 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'
brad Posted August 24, 2014 Report Posted August 24, 2014 thicker oil increases friction, no matter what the snake oil salesman tells you.
brad Posted August 25, 2014 Report Posted August 25, 2014 The Forged True pistons were a bit looser (in the bores), and the wrist pins were floated in the pistons.
mfg Posted August 25, 2014 Author Report 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.
brad Posted August 26, 2014 Report Posted August 26, 2014 here is the rings they came with......looks like expanders to me!
mfg Posted August 26, 2014 Author Report 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.
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