[Roadsters] long rod (r16) stroker

[Daryl Smith]

"Maybe it could be done with custom pistons."
Not only can be done, it has been done. Walter Peterson stated earlier that he has a race prepped 2L stroker with R16 rods and custom pistons.
This question about using the Z piston comes up often, but I don't remember anyone saying they have actually done it. No definitive answer on which piston.

IIRC, from my research, I believe you can go down to about 29 mm (1.15") pin height before the pin will start to intersect with the oil ring.

Daryl



  From: jeremy mayne 


  I also believe the R16 rods are lighter than the U20 (I remember weighing them when I was building my stroker, but I don't remember the weights).  They have a more slender beam than the U20s.  This was part of my motivation for lightening the U20 rods by about 30 grams each.  In an attempt to get a good CR with the forklift dished pistons, I actually considered using the longer R16 rods and having the tops of the pistons machined down rather than decking the block.  It wouldn't work though, because by the time the pistons were machined enough for clearance, the top ring would have been too close to the top of the piston.  Maybe it could be done with custom pistons.
   
  Jeremy
   
   
  > As far as the rods go though I was under the impression that the R16 rod was 
  > lighter than the U20 rod, and that the shorter piston
  > (shorter pin height because of the longer rod) should save a few grams 
  > also....??? The pistons in this case would be about 8 mm shorter in this 
  > case for the long rod stroker. I would expect a reduced weight with that 
  > much difference in pin height.........
  > 
  > Anyone know what these rods weigh?
  > 
  > Daryl 
  > ________________________________________