GerryL 0 #1 Posted July 23, 2008 Hi! I've got a GT-1800 from the early to mid 80's. It's got a horizontal 18HP B&S, model 422437 Type 0663 01. I believe it has over 1800 hours on it, and as it was down on power I took it apart to find the valve stems worn right through the guides into the block. I've checked around a lot, and I'm coming up empty on this engine as far as parts availability. I seem to remember that only a year or two ago I saw some short blocks online for around $350. Does anyone know of any NOS suppliers that might have a short block? Thanks! -Gerry Share this post Link to post Share on other sites
TT-(Moderator) 1,127 #2 Posted July 23, 2008 I haven't been able to find any leads on shortblocks for these engines in quite a while. The old opposed twin is now out of production and has been replaced by the Vanguard V twin. Parts production appears to have also ceased. Tulsa engine warehouse does have a few complete engines in stock, but availablity is limited. They have different "type" numbers, but the crankshaft size appears correct. The bad part is the $1300 - $1500 price tag. Sorry I can't be of more help, and . Share this post Link to post Share on other sites
kadetklapp 1 #3 Posted March 26, 2012 Tagged for the engine info. Share this post Link to post Share on other sites
woodchuckfarmer 333 #4 Posted March 26, 2012 On E-Bay The Mans One Stop Shop has rebuild kits for these engines, its just a thought....good luck ...Wayne Share this post Link to post Share on other sites
Flatheadpuller 6 #5 Posted March 27, 2012 The block itself is the same between a horizontal and vertical. I know where there is a brand new block. Or there tons of verticals on mowers that can be had cheap. Just switch crank, side cover and dipper on the inside. And all the external parts. Share this post Link to post Share on other sites
