tec h40 and h70's


Old 02-27-03, 12:51 PM
Visiting Guest
Posts: n/a
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
Sponsored Links
Old 02-27-03, 05:02 PM
Visiting Guest
Posts: n/a
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


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes