rvwp Posted July 23, 2021 Report Share Posted July 23, 2021 Hi Guys, Having completed the rebuild of an 'J' type overdrive now mounted to the gearbox on the bench, I need to set up a power drive to the output shaft and check its operation before fitting to my 4A. Whilst the overdrive may function during this test, I would also like to check the oil pressure. However, a pressure gauge has to be connected to the test point to do this. Before committing to purchase a pretty expensive adapted gauge available from ODS Ltd and others, for a one of use, I was wondering if anybody had been down this route and had such a gauge that they would hire me rather buy one. Thanks Rich Quote Link to post Share on other sites
BlueTR3A-5EKT Posted July 23, 2021 Report Share Posted July 23, 2021 Did you read this? https://static1.squarespace.com/static/5c6dec53b10f25d4edf0b3f7/t/5d019676f90de40001aae0a2/1560385143542/J+Type+Overdrive+Part+IV.pdf Suggests using a LH rear brake hose from a TR4A-6 adapted to the gauge. Then talk to this forum member. Peter W Quote Link to post Share on other sites
rvwp Posted July 24, 2021 Author Report Share Posted July 24, 2021 Yes Peter, used Buckeyed triumph as a guide when rebuilding the overdrive. Problem is I don't have an old rear hose to modify or a gauge of the correct range! To buy both of these would be more expensive than getting the proper item from ORS. Thanks Rich Quote Link to post Share on other sites
John Morrison Posted July 24, 2021 Report Share Posted July 24, 2021 Does the J type, use the same as the A Type, I know D types are different. John. Quote Link to post Share on other sites
rvwp Posted July 24, 2021 Author Report Share Posted July 24, 2021 Hi John, I'm guessing not as ORS Ltd quote different part numbers for the A and J pressure gauges. The difference is probably the pressure point plug thread. Rich Quote Link to post Share on other sites
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