ORIGINAL: 46u
Just worries me when they mention ABN as we know how durable it is. Of OS web site.
ABL
Advanced Bimetallic Liner. Specialized form of ABN. Instead of a single-step, single-material plating, the ABL Plating process is based on a layered approach made possible by two OS-developed hard-nickel alloys. The first alloy is used as the bottom (bonding) layer, to fuselage the top layer to the brass liner. The second alloy, developed for superior hardness, forms the top layer. Together, they create a barrier that protects the liner against excessive heat and wear.
Thanks for the input.
The VG engines use ABN (the ABL process) for a particular reason: it is supposed to be cheaper (although I question that since nickel by itself on the market today has a high sale value).
I agree, ABC is the better production method as far as engine performance and longevity.
Another thing to consider is that the VG engines (.30VG and .21VG) are horribly very simple designs. They do not use the proven port configurations, timings, and race designs seen on a .21 V-spec speed tuned or even a .12TZ race tuned. The VG engines are meant to be a competitor against the cheaper Chinese engines (STS, SH & SH derivatives, etc.) with OS' reknown quality and ease of tuning. Also, since the VG engines use very very simple designs, they might be great at low end brute torque, but hey seriously suffer at RPM ranges at 30000+ RPM.