Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

1) The replacement carb for a medium frame Tecumseh is 632334A ( this is a part # that replaces a disontinued part but the blow up diagram of the replacement shows an adjustable main jet. Therefore I ASSUME it is adjustable.

2) The carburetor repair kit for this model is 632347 

I was able to secure a blowup diagram of this carb and the list of parts in the repair kit. It APPEARS all of the main jet parts are present in the kit.I NEED VERIFICATION If this includes the needle and the jet. 

If one were to remove the fixed jet from the current carb which I believe is the green plastic tube held in by O-rings and replace it with the adjustable jet and needle from the #632347 repair kit would it work? Could you retrofit the new bowl with the adjustable assembly or would you have to buy a new bowl?

If anybody could verify or correct my assumptions I would be most appreciative.

Marc

Just for the record -theHonda GX series engine on my power washer made the same spit, sputter,cough,blemph sounds due to it's fixed jet carb. Honda has addressed this problem by producing a line of altitude related jets. Another words if you want to richen up a Honda fixed jet carb parts are available. The carb will still be fixed jet but at a richer setting.

Hi MM14..

A car is different because you vary the speed to the load or speed you choose,  If you want to Run ia at peakRPM, on a straight say a straight road you could do it all day. However if it had a governor on it, it would not let you..  I know you know peak does not mean Red Line.

However a governor will never let one of these machines run at peak if the governor setting is at a lower RPM than peak.  The governor only tries to keep the machine from slowing down (remember I said "Try" there for the slown process") when under a load.  It also keeps the machine from turning higher than the goverened RPM.  It never shoots for more RPM.  It dumps more gas into it, but it never tries to exceede the rpm.  If you manually excede the RPM  by forcing the throttle open It will do the same as the load condition, however in reverse it will lower the throttle back.

Analagy like driving on a 65 mph highway in 4th gear, standard trans.  you come to a hill, steep  going up the hill you got to floor the accelerator to try and maintain the speed. you do that however speed drops to 40  , now even if you are able to maintain 40 you are going to heat the motor up real fast.  You have an alternative, you can downshift , using the gearing advantage bring the car back up to 65, only difference is the motor is now running at a higher rpm , closer to peak etc. 

However with the governor setting you don't have the same choice, cause it only opens the accelerator to maintain an rpm.

In the same analagy as above now with a governor in the motor,  The same thing would have happened at first the car would have dropped speed to 40 mph.  so you do a quick down shift.  you will never get the car back up to 65 mph, cause it takes more RPM's than the goverened RPM. (so you will have this big powerfull engine crawling up a hill like it's a wimp, ) 

The whole point  here is, once you put a governor on it, you got to look at it differently.  there could now be anything under that hood of that car. A weak engine to a strong engine,.  A lot of it is how much they want to charge for it,  they make a one size fits all . get their manufacturing cost advantage there and then label the engine as the price will bear. 

This can all be summarized by saying there is a fudge factor involved in how these engines are related to power caused by the way they can and are required to rate their engines.  The manufacturer takes advantage of it to reduce their manufacturing costs.  And to get into the pockets with fatter wallets.  And to help the EPA gain controll, they go to the same country clubs.

Now the assasins are coming to my house as we speak.  That's ok they can pry it out of my cool dead hands to quote C. Heston.

So after all that has been discussed on this subject  How bout we get a feel for other's opinions  Make a quick post , in agreement or not.  It would be interesting

Ben07

That's just my personal opinion.

Yes, I would like to see engine manufacturers have the true HP ratings of the engines, advertised. What I don't really care about is a class action law suit, I have no need for that myself. As long as the spec's are published and easily found, I'm good to go.

Actually that is what some of us are saying you may be actually getting. less choices than actually implied by the seller

A choice between 8 and a 13. (over 50 percent in BHP between the two almost identical engine. however the rasting is at  a much higher operating rpm that the machine can't run at with a governor)  Big bucks in the differences, sure some more features, which does kind of camoflague and confuse the issue,  There is still a big free percent left over for the engine charge going back to the MFG for the low cost internal slight carb differences. 

also when you run them under load and rpm, drops to peak torque RPM  and you will find that there is no where close to a 50 plus percent increase in power between them there.  So do you actually have like five choices or do you only have in essence only like two?  

Ben07

How much of a HP increase did you think you got with your

 new carb on your 8HP engine??

Also, what is the part number on the carb, or is it top seceret??

                                                                       Fred   

 Richie,

How much of a HP increase did you think you got with your

 new carb on your 8HP engine??

Also, what is the part number on the carb, or is it top seceret??

                                                                       Fred   

Hi there Fred,

 Thanks for the numbers.

Also when you were at the Tulsa engine site, did you check the specs on the Tec HMSK 8, graph shows about 6.4 HP out of 8.

The 10 shows 8HP, which is about a 20% loss due to the EPA carb.

I think that your good carb got you back at least 1 HP,  maybe more, so now your 8 is at least about 7.4HP.

                                                        Fred  

 Richie,

 Thanks for the numbers.

Also when you were at the Tulsa engine site, did you check the specs on the Tec HMSK 8, graph shows about 6.4 HP out of 8.

The 10 shows 8HP, which is about a 20% loss due to the EPA carb.

I think that your good carb got you back at least 1 HP,  maybe more, so now your 8 is at least about 7.4HP.

                                                        Fred  

Fred,

I'd have to verify the graph you are referring to, but I believe that is the one I have.  As for additional HP due to my adjustable carb, it stands to reason something good came out of it, beyond the fact it runs better, but what makes me hesitant about me commenting further is the fact these engines run at a governed speed.  For whatever it's worth, if I had to do it all over again, I'd still make the carb switch

Marshall, if you were referring to me in the way I answered Fred's previous question about HP verses the new carburetor, thanks.