![]() ![]() A concentric slave cylinder allows more linear clutch feel than an external lever-actuated clutch and release bearing. The clutch release bearing is operated by a concentric slave cylinder that surrounds the input shaft in the clutch housing. The shift forks are activated by a cable system. ![]() There are three separate shift fork shafts, which hold three shift forks to activate the synchronizer rings for the two gearsets on each of the three gear shafts. This three-shaft (also called three-axis) design results in a very short axial length for better packaging. The F23 has two gearsets on each of three parallel shafts – the input shaft, the output shaft, and the intermediate shaft. It features compact packaging, broad low-torque applications, and reliable operation. The Getrag F23 is a three-axis conventional transverse 5-speed manual transaxle with fully synchronized reverse gear. GM technical specification on the F23: Released 2006 Lastly, the F23 is an easier, cheaper, and better geared, swap than the F40. The power potential the F23 continually handles reliably, an option those of you with high output builds value most. Parts and LSD options are readily available. Having disassembled both, I would prefer to split the case of two F23’s, than a single M282, and I could do two of the former faster. Servicing the F23 is much easier task than the M282. Shifting effort is easier, engagement is less "notchy", and the reverse gear will never grind. The F23's mannerisms are mild, and uncharacteristic of the Getrag we know in our own circle the M282. The newer ecotec engines come mated to the F23 in many instances – a bonus for those doing an ecotec swap. The F23 using the GM metric pattern is found in 2000-2002 J bodies equipped with the 2200 series engine, which statistically have been driven far less than the 25 year old M282 and HM282 / NVG-T550 of the 80's and 90's. The first and foremost reason this transmission is a viable option is its low mile availability. The F23 is rated to withstand 230nm of torque (170ft/lb), but is known for its renowned strength in high power circles. It is of three shaft design, features a self adjusting internal throwout bearing, a synchro'd reverse, a variety of gear ratios to choose from, and most importantly - bellhousing variety GM metric (60 degree), Opel/Vauxhall/Saab /122 pattern, and Ecotec pattern. ![]() Getrag’s newest iteration of their five speed transaxle is the F23, which has been built from 2000 - 2010. This article will familiarize you with the Getrag F23, its strengths and weaknesses, and supply detailed instruction for installing it and the necessary equipment. ![]()
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