Crankshafts for the Kent 1600 engine
#30461 from Club Racing Board · Member advisory · Minutes (2021-04 Fastrack)
Recently concerns have been raised about the sufficiency of GCR 9.1.1.B.12.k – Crankshafts for the Kent 1600 engine. This is a
rule that has been in place for approximately 18 years and is adequate as written; however, some clarification is warranted.
SCCA Enterprises sells a crankshaft that is manufactured by SCAT. This particular crankshaft has the SCCA logo on the front
counterweight; it also carries the Formula Ford International (FFI) logo. This crankshaft is legal per the GCR in both dimension
and weight as supplied by SCCA Enterprises. The critical dimensions are cited in the aforementioned section of the GCR. The
crankshafts may not be re-profiled (knife-edged). See GCR 9.1.1.B.12.a.6. In some instances the blocks may need to be trimmed
slightly for fitment; this is not a new issue, but rather something that was common with the prior uprated OEM crankshafts. The
rules also permit “other” cast crankshafts which meet these dimensions and weights. While all of the dimensions of the
Show 1 more lines
crankshaft are not cited in the GCR, a known stock specimen can be utilized for comparative purposes if necessary.