Topic: 17.5 techumseh endro?

[Flipper]

Dont blame the engines Joey, Vicki would tell us otherwise 

Shhh!.....*Snicker - Snicker*!

[strokerwheelhorse56]

ive got one of these just never considered building it till now. mines the 15hp off a poulan tractor that was scrapped. what can these handle stock ?

[Darkviper]

My buddys got 17hp on his CP class and its fast.

[trbinrat]

ive got one of these just never considered building it till now. mines the 15hp off a poulan tractor that was scrapped. what can these handle stock ?

In stock form. 3650 rpm.  IMOW, JP, MXR

[strokerwheelhorse56]

what about non stock ? can the crank hold up well with a heavy cam ,port work ,shaved head,billet rod and an arc flywheel?

[Darkviper]

Yes from what iv seen.

[Burwell555]

The single ohv Tecumseh cranks can handle plenty of timing and rpm with some pretty aggressive camshafts. As a whole they are a very well build piece but you will find the stock rockers to be the weak point IF your cam is, for lack of better words, "aggressive enough" to need significant spring pressures. Good luck with roller rockers, they are a one of piece as of now and that pricey. George had something in the works but I'm not sure if anything ever became of it other than just testing them out.

[Darkviper]

From what i herd chevy 350 roller rockers can be grinded down to fit in briggs and stratton but im not sure about techumseh but maybe.

[Burwell555]

Small block Chevrolet stuff is quite large...I'm sure with enough time and money it's possible but to make them fit under a stock valve cover, I don't think is possible

[Darkviper]

See you can  but i cant find one it says you have to grind it down but i remember seeing it but heres the link http://www.heymow.com/index.php?topic=2302.0

[George Herrin]

You wont fit chevy parts in a indian valve cover  and why someone would want something that heavy on a briggs is betond me. to each his own though.

[Darkviper]

Ha ha ha lol me and my freind will make it work i hope.

[strokerwheelhorse56]

what size are these rockers? 1.5 1.6? iknow that butler performance makes 1.6 roller rockers

[redline]

Techumseh rockers are 1:1 ratio. You won't get a 1.5 to 1.6 ratio rocker to fit without having some seriously wacked out valvetrain geometry that wont last.

[willenglish]

for the life of me I cant understand why anyone would want to try to run an obsolete engine from a dead company...and if you do...and get it right..its ALMOST as good as a Briggs. Just my view on it.