Tecumseh H70 7HP with Straight Pipe and Muffler

[openwheelmanic]

Unfortunately its true, TECs biggest weakness is the connect rods. I ripped the stock rod to pieces in my TEC H70 rebuild (luckily it didn't go through the crankcase) and struck out trying to locate a billet replacement. Going to move up to my TEC HM100, i'm told that ARC Racing stcoks a billet rod for this engine.

[nissanskyliner34stun]

me and my friend put a h80 on our go cart. we got it up to 35mph in 100 feet. well until we blown the head gasket and a rod shot out of it. today we put a honda gx 140 on it. it does the same speed with out it trying.

[openwheelmanic]

Yes, very well, must have when running on dirt or back roads as i don't want any debris getting sucked into the carb - check out my other TEC H70 running videos for examples

[DialedBMX]

is that one of those air intake adapters for the filters? do they work well?

[openwheelmanic]

Hope it runs well for you - fyi the TEC H60 engine is what the H50 racing engine was based on, probably would well on a kart.

[fidoshock321]

i have an h60 on my tiller

[openwheelmanic]

check my other vids for the TEC H70 with the straight pipe w/o the muffler

[pivotboy63]

its not a straight pipe if it has a muffler lol

[doomsd46]

@pivotboy63 - Ya, if you are gonna put a muffler on, why not eliminate the slightly restrictive pipe and just have the muffler on. You would get better performance if you had one, or the other, but not both.

[benrobinson72]

i think i here a knock man listen close i here a snap BOOM hole in block commin happens to ALL tecs

[openwheelmanic]

@benrobinson72 - cant' be man, the vids more than a year old and i just ran the kart yesterday, listen to the other vids of the kart / 7 hp posted - only holes in TECs i've seen were by idiots who ran them out of oil or mistreated them....

[dragata1]

@openwheelmanic hey i had a 5.5 tec i ran it good i changed the oil every 3 mounths and next i know the engine is shooting parts and bits of metel at me the whole engine never even ran full throttle

[doomsd46]

@dragata1 - I have an Argo with a 35 year old Tecumseh 16hp on it and there isn't a thing wrong with it. I have had problems with Tecumseh's before, but I have had just as many problems with Kohler's, Brigg's and Honda's. I don't get why everyone rips on them.

[kosznt]

if you make a 3/4 dimeter 14" long straight pipe you gain 3/4 of a horse power

[Thebigharrypotterfan]

How are the Tecumsehs quality? i need a answer cause im about to buy one and i need to know if the're good!

[Geminimissions]

I prefer tecumseh over briggs and stratton, but both are good brands

[420witchdoctor]

I'd put a Volkswagen stinger pipe on it.

[Briggsmaster]

@420witchdoctor check out my go kart vid check out m stinger

[420witchdoctor]

@Briggsmaster I'm gonna, and leave comments for ya too.

[openwheelmanic]

I made a brace for the pipe but it only goes on my TEC 8 / 10 hp motors

w/o modification of the head cover plate (H50 / H70) they have a mounting screw on the head /cover plate that can be used to mount the brace at the cylinder end

[SpiritsoftheWolf]

this has a muffler, not a straight pipe, a straight pipe means NO MUFFLER, just so you know, i got 3 mowers has no mufflers , all straight pipes

[openwheelmanic]

the pipe is straight with a muffler on the end...YES ITS A MUFFLER lol

good luck with your mowers

[SpiritsoftheWolf]

they all been running on straight pipe for over 4 years with no problem

[mattpitch]

where did u get the straight pipe?

[openwheelmanic]

cut the flange off a stock muffler, welded on a piece of 1 in round mild steel tube at an angle that would clear the air filter and thats it

[SpiritsoftheWolf]

from a standard 1/2 water pipe

[openwheelmanic]

sure why not if it will work (might be a litte on the heavy side)...i used a piece of stock mild steel "1 round..with a little smoothing out of the weld everything went together ok (just watch your pipe angle vs the mounting bolt clearance and air filter position.

[BeboAltizer]

isn't that the same engine that is on the old troy bilt horse tillers?

[openwheelmanic]

quite possibly...this motor came of an old sears craftsman snowblower of

middle 90's vintage

[BeboAltizer]

then it probably is. i have one on a sears tractor. it is awesome

[bumblebeecbr]

I have a 7hp H70 on my old mastercraft snowblower. I just rebuilt the carb and got the engine running good but if i leave it idling for a while and then i give it gas a big cloud of smoke comes out of the muffler then goes away. what could this be? I know the obvious like worn rings but could it be something simpler than that?

[dc5000123]

Black smoke is gas

Grey smoke is oil

[CJO740]

@dc5000123 I totally trust tecumseh, they are very good and durable engine. I actually just found an old beat up tecumseh at a junk yard (its from 1972) and i put fresh gas and oil in it, fired up on the 3rd pull.

[lesnar47]

i have a 5hp techumseh engine with that same exact muffler and piping, i am also building a go kart, how fast does it go? send me a message

[openwheelmanic]

i'd estimate between 25 - 30 mph

[ford1979truck]

NOT A STRAIGHT PIPE

straight pipes are just pips with nothing to slince them ..no muffler

[openwheelmanic]

you're right...that what the "with muffler" means...

[ford1979truck]

what

[ford1979truck]

not a straight pipe it gots a muffler OMFG take it off then its a straight pipe

[sdylke]

ya i kno some ppl are too bright tho lol

[openwheelmanic]

It's a MaxTorque SS series clutch - 12 tooth for #35 chain i purchased from Ideal Karts in Lemington, Ontario, via mailorder some years back - Comet also makes clutches for this type of application and are readily available (kart shops, industrical supply, etc)

[BackBurnerHobbies]

Neat Kart, where did you get the clutch ass'y?

[evinsteven13]

awesome it would really be cool without the muffler but for you neighbors i can see why!

[dc5000123]

Cool Kart !!!!!!

Is that Carburetor Stock ???

What type of clutch R U using ????

[openwheelmanic]

The carb pictured is stock, however i've got a Tillotson HL series on order...the clutch is a Max Torque SS Series 12 tooth for #35 chain

[dc5000123]

Sounds Awesome !!!!!!!

[coshyno]

thats not straight pipe

take the muffler off

[openwheelmanic]

thats why it says "straight pipe with muffler" - the mufflers there for my neighbours sake....

[Bullitt2112]

Nice

[openwheelmanic]

Thanks for your comment.

Stay tuned for more videos of my engines and new kart under construction.

Best Regards,

Openwheelmanic