81SC Posted 29May, 2019 Report Share Posted 29May, 2019 I'm currently making some 915 gearbox tools for my gearbox rebuild, does anyone have the dimensions of Porsche tool P355A. From the photo below I was going to start with a 100mm length of 50mm x 16mm flatbar as a starting point. If someone could supply the internal dimensions of P355A in relation to the attached drawing, that would help me out. Quote Link to comment Share on other sites More sharing options...
AdRock Posted 30May, 2019 Report Share Posted 30May, 2019 Can you just measure your 915 Main shaft? Assuming that you're building this tool to rebuild your own transmission. Quote Link to comment Share on other sites More sharing options...
81SC Posted 30May, 2019 Author Report Share Posted 30May, 2019 18 hours ago, AdRock said: Can you just measure your 915 Main shaft? Assuming that you're building this tool to rebuild your own transmission. You are correct in saying that AdRock, but the Mechanical Maintenance Planner in me lives by the 6 P's mantra. So if all else fails I will have to wait and measure the shaft after disassembly. But I'm hoping someone will be able to assist with the dimensions of P355A.🙏 6 P's: Prior Planning Prevents Piss Poor Performance. AdRock 1 Quote Link to comment Share on other sites More sharing options...
81SC Posted 7June, 2019 Author Report Share Posted 7June, 2019 I got some dimensions for the P355A, had some time after work today to do a trial run at broaching some slots. I'm not totally happy with the first try, but it still turned out OK. Zelrik911 1 Quote Link to comment Share on other sites More sharing options...
81SC Posted 22June, 2019 Author Report Share Posted 22June, 2019 My P355A tool is now completed for my future gearbox overhaul, I ended up using a piece of 65mm x16mm flat bar. It's now time to move onto P252A & P37A gearbox tools. Oldskl60 and AdRock 2 Quote Link to comment Share on other sites More sharing options...
Stew F Posted 26June, 2019 Report Share Posted 26June, 2019 Broaching splines and keyways was the biggest pain in my arse when I was on the tools. Quote Link to comment Share on other sites More sharing options...
81SC Posted 26July, 2019 Author Report Share Posted 26July, 2019 Finished the P252A tool this week. I used a section of 1-1/4" gal pipe, a 41mm socket for the mainshaft nut & an old 1/2" drive socket for the tension wrench end. I also made a variation of the P252A that I saw on the Pelican forum, using an old 41mm ring spanner & an old 1/2" drive socket. I will be starting to fabricate the P37A next week now that I have acquired some old clutch plates for their spline section. After failing to find an old used 915 style clutch plate, I sort out some help from a mate in the auto spare parts field. After figuring out that I needed a 20 spline x 22mm I.D. type clutch plate, we were then able to determine that an early Ford Cortina or Anglia had a clutch plate with 20 splines and an I.D. of 7/8". P252A: P252A pelican variation: Quote Link to comment Share on other sites More sharing options...
81SC Posted 27July, 2019 Author Report Share Posted 27July, 2019 I started on the P37A last night, the Ford clutch plate is a perfect fit to the 915 input shaft splines(who woulda thunk it 🤦♂️). This is the start of cutting up the Ford clutch plate, sacrilege for some I'm sure. I'll machine off the flange plate from the spline boss section next week at work. MFX 1 Quote Link to comment Share on other sites More sharing options...
MFX Posted 27July, 2019 Report Share Posted 27July, 2019 Nice work. I will be watching with interest as I have no idea of the condition of my gearbox and I don't mind a little bit of DIY Quote Link to comment Share on other sites More sharing options...
81SC Posted 1August, 2019 Author Report Share Posted 1August, 2019 I completed my P37A tool for the 915 gearbox this week, I probably spent 1/2 hour each day after work to finish it. I'm thinking of making an additional bolt on piece out of angle iron, to bolt onto the bell housing stud holes so that the P37A tool can be held in a bench vice with the gearbox shaft out of the gearbox. Cutting out the raw material, 10mm steel plate was used. Machined the remaining part of the clutch disc off the spline boss on our old little jobber lathe at work. Spline boss with extension welded onto bell housing brace. Tapping 10mm metric course threads for the bell housing studs. I had to straighten the brace because of some heat distortion from welding. Ta da, my version of the P37A. Fits on the 915 just like a bought one.😀👍 tk111, MFX and Zelrik911 3 Quote Link to comment Share on other sites More sharing options...
81SC Posted 4August, 2019 Author Report Share Posted 4August, 2019 Hey PFAer's, Can anyone assist with the dimensions of 915 gearbox tools P225 & P226? I'm considering making these 2 tools as well for my future gearbox rebuild, so any help would be greatly appreciated. These 2 tools will be more of a challenge than my previous gearbox tool making adventures. P225: 915 3rd, 4th & 5th gears. P226: 915 1st & 2nd gears. Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 25March, 2020 Report Share Posted 25March, 2020 Yes I have these. Quote Link to comment Share on other sites More sharing options...
Oldskl60 Posted 25April, 2020 Report Share Posted 25April, 2020 Brilliant thread and some very nice work. Please keep us updated. Quote Link to comment Share on other sites More sharing options...
81SC Posted 26April, 2020 Author Report Share Posted 26April, 2020 Some extras 😉 Oldskl60 1 Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 26April, 2020 Report Share Posted 26April, 2020 42 minutes ago, 81SC said: Some extras 😉 How much for 1 of the mainshaft holding tools? I made one too.. but it's pretty embarrasing. Quote Link to comment Share on other sites More sharing options...
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