tec h40 and h70's
#1
tec h40 and h70's
i need the bore size and timing # for a 4--5 and 7 hp horizontals.i timed the h70 to 90 btdc but then i have 2 other references that say 50 btdc and a wall chart that says 50 btdc>>. appreciate the help. steve
#2
Timing Specs
Best thing to do is get a 3-10HP repair manual (Part#740049 or
692509) which will have this information in it. Here's a re-cap
for now of what you asked about:
H40 .050 BTDC
HS40 .035 BTDC
HS50 .035 BTDC
H50 .080 BTDC
H60 .080 BTDC
H70 .080 BTDC w/2.750" cylinder bore
HM70 .090 BTDC
H70 .090 BTDC w/3.060" cylinder bore
Tcumcman
692509) which will have this information in it. Here's a re-cap
for now of what you asked about:
H40 .050 BTDC
HS40 .035 BTDC
HS50 .035 BTDC
H50 .080 BTDC
H60 .080 BTDC
H70 .080 BTDC w/2.750" cylinder bore
HM70 .090 BTDC
H70 .090 BTDC w/3.060" cylinder bore
Tcumcman