Piston pin clearance
#1
Drifting
Thread Starter
Piston pin clearance
If the manufacturer size of a rod small end has a bore of 0.928 and you have a S/B chevy pin size at 0.927 would this theoretically be in spec? 0.928 - 0.927 = 0.001 or would this cut it too close end of range?
Spec posted on here is 0.001 - 0.0015 inch on stock size rods.
Searching the net for a floating S/B chevy wrist pin I found tolerance ranges between 0.0007 and 0.0010 inch.
Which measure to go with on setup using Pauter Rod and SRP piston?
Spec posted on here is 0.001 - 0.0015 inch on stock size rods.
Searching the net for a floating S/B chevy wrist pin I found tolerance ranges between 0.0007 and 0.0010 inch.
Which measure to go with on setup using Pauter Rod and SRP piston?
#2
Instructor
I am having a 2.85 L stroker combo build and using the Mitsubishi rods which are 22mm and fitting a 0.927 small block Chevy piston pin. The machinist advised to bore and install a bronze bushing for the pin instead of simply machining to press fit the pin. Perhaps a bronze bushing would solve your issue. He's charging about $100 for a set of four rods to be bushed.
#3
Drifting
Thread Starter
I am already building the stroker motor right now for someone and currently have the finished Eagle 5900MC3D rods and 148750 SRP pistons and Michael Mount sleeved block in my basement right now. I was just looking at some specs online from a particular Pauter rod that has a small end spec of 0.928 as a future option maybe....which could mean it may not need to be machined to fit the 0.927 pin on the 148750 pistons.
It was more the measurements I was interested in knowing.
It's on the tight end for Porsche rod clearance but on the big end for S/B chevy specs.
It was more the measurements I was interested in knowing.
It's on the tight end for Porsche rod clearance but on the big end for S/B chevy specs.