Engine valve woes
Posted: Fri Oct 23, 2020 1:54 pm
Hi all,
I am trying to assemble a table of valve and valve guide data used on the shortstroke G80CS. I need your help to fill in the blanks!
1956 INL 013988 (Alpha V55, Tranco 4350-I) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length 4.060" Guide 017019 (Alpha G425, Tranco G6436)
EXH 013989 (Alpha V56, Tranco 4350-E) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length 4.060" Guide 022208 (Alpha G485, Tranco G6496)
1957/58 INL 023368 (Alpha ??, Tranco ????) Head Ø 1-7/8" (1.875") Stem Ø 0.3730" Length ?? Guide 017019 (Alpha G425, Tranco G6436)
EXH 023369 (Alpha ??, Tranco 4350-E core ) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length ?? Guide 023370 (Tranco G6497)
1959 INL 024518 (Alpha ??, Tranco 4509) Head Ø ?? Stem Ø ?? Length ?? Guide 024359 (Tranco G6516)
EXH 023369 (Alpha ??, Tranco 4350-E core) Head Ø 1-11/16" (1.6875") Stem Ø 0.3725" Length ?? Guide 024519 (Alpha G506, Tranco G6517)
1960-67 INL 026028 (Alpha V208, Tranco 4513) Head Ø 1-3/4" (1.75") Stem Ø 0.312" Length 4.185" Guide 026030 (Alpha G515, Tranco G6526)
EXH 026029 (Alpha V209, Tranco 4514) Head Ø 1-9/16" (1.565") Stem Ø 0.3725" Length 4.150" Guide 024519 (Alpha G506, Tranco G6517)
All Alpha Vxxx and Gxxx codes are successions of corresponding Hepolite codes.
I am surprised by all these variations over the years. Obviosly the factory carried out a continuous development, no doubt with input from Cooper Motors.
Further info and corrections received with thanks.
-Knut
I am trying to assemble a table of valve and valve guide data used on the shortstroke G80CS. I need your help to fill in the blanks!
1956 INL 013988 (Alpha V55, Tranco 4350-I) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length 4.060" Guide 017019 (Alpha G425, Tranco G6436)
EXH 013989 (Alpha V56, Tranco 4350-E) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length 4.060" Guide 022208 (Alpha G485, Tranco G6496)
1957/58 INL 023368 (Alpha ??, Tranco ????) Head Ø 1-7/8" (1.875") Stem Ø 0.3730" Length ?? Guide 017019 (Alpha G425, Tranco G6436)
EXH 023369 (Alpha ??, Tranco 4350-E core ) Head Ø 1-11/16" (1.6875") Stem Ø 0.3730" Length ?? Guide 023370 (Tranco G6497)
1959 INL 024518 (Alpha ??, Tranco 4509) Head Ø ?? Stem Ø ?? Length ?? Guide 024359 (Tranco G6516)
EXH 023369 (Alpha ??, Tranco 4350-E core) Head Ø 1-11/16" (1.6875") Stem Ø 0.3725" Length ?? Guide 024519 (Alpha G506, Tranco G6517)
1960-67 INL 026028 (Alpha V208, Tranco 4513) Head Ø 1-3/4" (1.75") Stem Ø 0.312" Length 4.185" Guide 026030 (Alpha G515, Tranco G6526)
EXH 026029 (Alpha V209, Tranco 4514) Head Ø 1-9/16" (1.565") Stem Ø 0.3725" Length 4.150" Guide 024519 (Alpha G506, Tranco G6517)
All Alpha Vxxx and Gxxx codes are successions of corresponding Hepolite codes.
I am surprised by all these variations over the years. Obviosly the factory carried out a continuous development, no doubt with input from Cooper Motors.
Further info and corrections received with thanks.
-Knut