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Maintenance Specs
Like I did with the TR4, I'm putting together a list of basic specifications for servicing the Tunebug. There is always a lot of discussion (flame wars, etc.) about oils and such, but this is what I have decided to use, at least as a starting point. Keep in mind that your mileage may vary, and that I am not an expert in any way.
| Item | Specification |
|---|---|
| Motor oil | 20w50, 7.8 pints, plus 1.2 pints in oil filter |
| Oil filter | K&N HP2009, Wix 51516 (for a Moss spin-on adaptor) |
| Transmission Fluid | 20/50 Racing (non-detergent) |
| Rear diff | Hypoid gear oil, SAE 90, 2.1 pints GL4 |
| Dashpots | 10w30 (still experimenting), can also use Automatic Transmission Fluid, straight weight motor oil (10, 15, 30) or Marvel Mystery Oil |
| Ideal oil pressure | 30 - 60 psi when warm, 10 - 25 at idle |
| Idle | 900 RPM (should be 550 RPM on fresh engine) |
| Point gap | .014 to .016 |
| Spark plugs | |
| Spark plug gap | .024 to .026 |
| Valve clearances | .012 cold |
| Tire Pressures | |
| Tire Size (stock discs) | 155/80R13 (5.20 x 13S Bias Ply or 145SR x 13 radial are the original size) |
| Brake Fluid | DOT 4, Castrol GT LMA |
| Fuses | 35 amp Lucas fuses, Moss #146-700 (note, these are not the same fuses you get in standard parts stores!) |
| Shock Oil | |
| Battery | Group 24 (reverse terminal location is 24F) |