Valves and Guides
The outside diameter of all valve guides for singles is nominally 5/8”. If your old one is larger it is your head that is wrong not our guide.
For side valve please click here. For our valve & guide pack please click here.
| Models | Years | Inlet | Exhaust | ||
| Valve | Guide | Valve | Guide | ||
| LH-LG-LF-OH | 1933-34 | 420-33 | 480-33 | 450-33 | 495-33 |
| 1935 | 420-33 | 480-33 | 450-33 | 495-35 | |
| 1936-40 | 420-36 | 480-33 | 450-33 | 495-35 | |
| NH-NG-NF | 1933-34 | 423-33 | 480-33 | NA | 495-33 |
| 1935-55 | 423-33 | 480-33 | 453-35 | 494-35 | |
| 1956-58 | 423-56 | 480-56 | 453-56 | 494-56 | |
| SG-VG-VH | 1931-32 | NA | 475-31 | NA | 475-31 |
| VH-VG Iron head | 1933-34 | NA | 470-33 | 441-34 | 491-33 |
| 1935-53 | 415-35 | 470-33 | 441-35 | 491-35 | |
| VH-HS-HT alloy heads | 1950-55 | 415-35 | 470-50 | 441-35 | 491-50 |
| 1955-58 | 415-35 | 470-50 | 441-55 | 491-50 | |
Valve Springs – May be ordered as sets or as individual springs
| Models | Years | Outer Spring | Inner Spring | New Free Length | Set No. | |
| Outer | Inner | |||||
| LF-MF-MH | 1929-32 | 525-29 | 520-29 | 2.125 | 2.125 | VS10 |
| NF | 1933 | 515-31 | 540-26 | 2.625 | 2.375 | VS14 |
| NH-LH | 1933 | 525-33 | 540-26 | 2.75 | 2.375 | VS11 |
| NF | 1934 | 515-31 | 540-34 | 2.625 | 2.125 | VS422 |
| LF-LH-NH | 1934 | 525-33 | 540-34 | 2.75 | 2.125 | VS13 |
| NH-NG-NF-LH-LG-LH-OH-OG | 1935-50 | 525-35 | 540-34 | 2.625 | 2.125 | VS19 |
| NH-HT3 | 1951-58 | 525-51 | 540-34 | 2.219 | 2.156 | VS469 |
| C-D-E-F | 1926-30 | 515-31 | 540-26 | 2.625 | 2.375 | VS14 |
| G | 1930 | 530-30 | 545-30 | ? | 2.125 | |
| SF-VF-VG | 1931 & 33 | 515-31 | 540-26 | 2.625 | 2.375 | VS14 |
| SG | 1931-32 | 520-31 | 545-31 | 1 27/32 | 1 11/16 | VS16 |
| VF-VG-VH | 1932 | 520-31 | 545-31 | 1 27/32 | 1 11/16 | VS16 |
| VH | 1933 | 520-30 | 545-30 | 2.815 | 2.185 | VS15 |
| VG-VF | 1934-50 | 515-31 | 540-34 | 2.625 | 2.125 | VS422 |
| VH-VCH | 1934-50 | 520-34 | 540-34 | 2.344 * | 2.125 | VS20 |
| VH-VCH-VHA-HT 5 | 1951-58 | 515-31 | 540-34 | 2.625 * | 2.125 | VS422 |
| HS-HS MK I/III | 1954-58 | 515-54 | 540-34 | 2.281 | 2.125 | VS513 |
* These two springs are of different outside diameters, so if in doubt please check. Outer spring 520-34 measures 1 15/32″ and 515-31measures 1 3/8″.
No products were found matching your selection, but we still might be able to help! Give us a call on 01986 894798 or email spares@draganfly.co.uk