Triumphs Only, Inc. - Triumph Technical Service Bulletin

Engine Sealing Block- Spitfire & GT 6+ TR 6

June 5, 1969
A new front sealing block, part number 151134, has been introduced to provide better crankcase sealing by eliminating the possibility of "bowing" during assembly. The new seal is clamped to the front engine plate by three set-screws instead of one as previously used and was incorporated from the following engine numbers:
 
Spitfire MK III - FD.34007
GT 6+ - KD.52646
All TR 6 model

Services

Oil leakage from the sealing block of an entire engine prior to the above numbers can be rectified by fitting the new block as follows:
 

  1. Remove the front engine plate and sealing block as described in the appropiate Workshop Manual.
  2. Locating a new gasket (part number 215350) on the engine plate, carefully mark the positions and drill two additional 3/8" (9.5 mm.) diameter holes.
  3. Using "Hylomar" jointing compound on both faces of the narrow strip gasket (part number 150531), assemble this to the crankcase, followed by the new sealing block 151134, which must be aligned with the front face of the cylinder block before final tightening.
  4. Coat both faces of the new engine plate gasket (215350) with "Hylomar" jointing compound and attach this and the modified engine plate to the cylinder block.
  5. Use two additional set-screws, PT.0805, and spring washers, WL.0208, when securing the engine plate.

New Parts:

Sealing Block - 151134
Strip Gasket - 150531
Engine Plate Gasket - 215350
2 Set-Screws - PT.0805
2 Spring Washers - WL.0208

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