Callies Ultra I-Beam Connecting Rods for Nissan GT-R VR38DETT BBC Journal oversize valves Hand TIG-welded seams

Hand TIG-welded seams

In the case of the GT-R

One with an offset (Dead time

fat internal MAP sensor that can handle boost pressures up to 80 PSI of boost

If the fasteners stretch too far

Callies Ultra I-Beam Connecting Rods for Nissan GT-R VR38DETT BBC Journal oversize valves Hand TIG-welded seamsUltra connecting rods are made entirely in the U. S. A. Every Ultra connecting rod is produced from specially formulated TimkenSteel 4330V steel. This material is then precision forged in Michigan and fully machined in our Fostoria, Ohio facility. Many geometric nuances have been incorporated into the design of Ultra connecting rods. These design features enhance the Ultra against specific loads and stresses which are applied to connecting rods