slammer302 2,154 #1 Posted December 30, 2014 Got this motor off a 552 or 502 it has two I'd tags on it wanted to see what you guys think Share this post Link to post Share on other sites
slammer302 2,154 #2 Posted December 30, 2014 One tag says HT55B and the other says H55A 1170 Share this post Link to post Share on other sites
JustinW.73 224 #3 Posted December 30, 2014 That is a 5 hp tecy big block. I have one and it looks just like that. Share this post Link to post Share on other sites
slammer302 2,154 #4 Posted December 30, 2014 Would this be considered a Clinton motor Share this post Link to post Share on other sites
JustinW.73 224 #5 Posted December 30, 2014 Nope just a standard big block Tecumseh 5 horse. Share this post Link to post Share on other sites
JustinW.73 224 #6 Posted December 30, 2014 How I know this HT55B. T is Tecumseh, one 5 is stroke and the other is diameter if I remember right, making it a 5 hp rated, the B is big block, H is flat head. Share this post Link to post Share on other sites
slammer302 2,154 #7 Posted December 30, 2014 Thanks Share this post Link to post Share on other sites
TT-(Moderator) 1,128 #8 Posted December 30, 2014 How I know this HT55B. T is Tecumseh, one 5 is stroke and the other is diameter if I remember right, making it a 5 hp rated, the B is big block, H is flat head. Wow No. H and / or HT is crankshaft orientation (Horizontal) V would denote vertical shaft. 55 = 5.5hp The letter suffix included in the basic model number (A, B, C, D, etc.) is the change progression in the basic model. 1170, 3088, 3089, etc. is the spec number (used to identify application and specific parts from the manual) P indicates a Phelon magneto W (or no letter) would be a Wico magneto. 1 Share this post Link to post Share on other sites
TT-(Moderator) 1,128 #9 Posted December 30, 2014 Not guaranteed 100% accurate, but this is what I seem to remember: The HT55B~3088P tag may belong to an early-production 502 engine. The 1962 32R lawn Ranger and later 502 models used an HT55C engine. (all I've ever seen) The H55A-1170 tag / shroud belongs to a 1960 550 "Suburban". They are often referred to as Lauson engines even though Tecumseh bought Lauson out a few years prior. Share this post Link to post Share on other sites
