OliverSedlacek Posted June 18, 2017 Share Posted June 18, 2017 Does anyone know the bore of the oil jet hole in the big end? Link to comment Share on other sites More sharing options...
Duckpit Posted June 19, 2017 Share Posted June 19, 2017 Oliver hiAs you have had no responses, I thought I might make a suggestion. There are conrods and crankshafts for sale on ebay. You may get a response by messaging one of the sellersCheers Nick Link to comment Share on other sites More sharing options...
Ian Macquarie Posted June 19, 2017 Share Posted June 19, 2017 Looking at the Ford Rods that came out of my Caterham supplied Supersprint:-1/64" (1.58mm) drill will not pass through the hole1.5 mm (1.48mm) drill will pass through the hole. (numbers in brackets are measured with a digital caliper.)The hole is stepped - larger on the inside of the bore and also countersunk. My best estimate of the larger diameter is 4mm. The overall length of the hole is approximately 12 mm 8 at 4mm dia and 4 at 1.5mm dia. though these last measurements are not very accurate.When my engine was rebuilt with steel rods, I know that the rods arrived with no holes and that Steve at Vulcan drilled holes in them before fitting, though I have no idea what the diameter was. A call may be worth while - he may be forthcoming with information - on the other hand he may feel that his knowledge is what people pay for and be reluctant to give details.Ian Link to comment Share on other sites More sharing options...
Roger King Posted June 21, 2017 Share Posted June 21, 2017 I really wouldn't worry too much. Most steel rods don't have the holes and even some big end bearings don't have them and I've never known a problem to be caused by this. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted June 23, 2017 Author Share Posted June 23, 2017 Thanks for the feedback. Roger, I'm just concerned because of the camshaft problems I've had. Link to comment Share on other sites More sharing options...
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