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Tecumseh Engines / 691 float bowls
« on: May 04, 2010, 10:08:07 pm »
does anybody have the part numbers for the tvt 691 float bowls i drilled jets too big gotta redo
thanks brian
thanks brian
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Kohler Engines / 26 hp command issues
« on: August 30, 2009, 11:24:56 pm »
I have a 26 hp kohler command
The problem is when its warmed up and need power it pops out the exhaust and boggs bad.
I checked the spark and put new plugs in it did leakdown test and it checked good did compression test cold and hot both checked good cleaned carb checked fuel flow everything checks out
did i miss something??? it has a smart spark module could that be bad??
The problem is when its warmed up and need power it pops out the exhaust and boggs bad.
I checked the spark and put new plugs in it did leakdown test and it checked good did compression test cold and hot both checked good cleaned carb checked fuel flow everything checks out
did i miss something??? it has a smart spark module could that be bad??
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Tecumseh Engines / Vtwin issues
« on: April 06, 2009, 09:39:26 pm »
Hey guys
Ive got a 691 twin with a precision cam from ec, roller rockers, stainless valves double valve springs, big carbs done by me, its got just about all the good stuff.
It idles fine but when you give much throttle it starts missing after around 5 laps, before the 5 laps it runs great.
I checked fuel pump output and its great.
I changed needles and seats and cleaned the carbs 10 times.
I changed the main jets and emulsion tubes.
The valves are adjusted to .004 right on.
I changed both coils and diodes.
I tried champion, autolite and ngk sparkplugs. Spark is excellent.
It has 120 psi compression on both sides.
Did a leak down test with no abnormal leakage anywhere.
Syncronized the carbs by the book and with vacuum guages.
No intake or head gasket leaks.
Ive tried 87, 91 and 115 octane gas. Changed fuel filter and gas lines.
Am I missing something???? I cant figure this thing out.
Ive got a 691 twin with a precision cam from ec, roller rockers, stainless valves double valve springs, big carbs done by me, its got just about all the good stuff.
It idles fine but when you give much throttle it starts missing after around 5 laps, before the 5 laps it runs great.
I checked fuel pump output and its great.
I changed needles and seats and cleaned the carbs 10 times.
I changed the main jets and emulsion tubes.
The valves are adjusted to .004 right on.
I changed both coils and diodes.
I tried champion, autolite and ngk sparkplugs. Spark is excellent.
It has 120 psi compression on both sides.
Did a leak down test with no abnormal leakage anywhere.
Syncronized the carbs by the book and with vacuum guages.
No intake or head gasket leaks.
Ive tried 87, 91 and 115 octane gas. Changed fuel filter and gas lines.
Am I missing something???? I cant figure this thing out.
4
Briggs Flathead / cam question
« on: March 04, 2009, 09:41:36 am »
We have an 8hp briggs flat head with about 25 races on it
The exhaust lobe of the cam rounded out, has anyone had this problem too??
There was no binding we clearanced the block so the lifters wouldnt bottom out and there was no coil bind of the valve springs.
The valve clearance is .005 and .007.
We also changed the oil every race and used mobil 1 synthetic 5w30.
The springs are ec dual with the inner spring removed.
Any ideas or is the bronze used the build up the cam just too soft??
The exhaust lobe of the cam rounded out, has anyone had this problem too??
There was no binding we clearanced the block so the lifters wouldnt bottom out and there was no coil bind of the valve springs.
The valve clearance is .005 and .007.
We also changed the oil every race and used mobil 1 synthetic 5w30.
The springs are ec dual with the inner spring removed.
Any ideas or is the bronze used the build up the cam just too soft??
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Tecumseh Engines / arc rod torque procedure
« on: April 26, 2008, 01:08:36 pm »
does anybody know the torque procedure for the arc rods? i lost mine
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Tecumseh Engines / Carbs Melting
« on: September 03, 2007, 01:12:43 pm »
Im runnin a 691 twin and after 15 laps in the feature it quit
Come to find out the blue emulsion tubes had melted over
I cant seem to find the cause Valves, compression, spark everything checks out ok also just running premium gas
Any ideas???
Come to find out the blue emulsion tubes had melted over
I cant seem to find the cause Valves, compression, spark everything checks out ok also just running premium gas
Any ideas???
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Tecumseh Engines / v twin valve spring question
« on: May 13, 2006, 06:23:24 pm »
hey george
i recently got a set of double springs from ec for my v twin
question is do i gotta machine the heads for the springs or are they ok
thanks
i recently got a set of double springs from ec for my v twin
question is do i gotta machine the heads for the springs or are they ok
thanks
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Tecumseh Engines / 691 questions
« on: April 03, 2006, 06:48:05 pm »
would a bigger valves help in these motors
or does the stock valves do just fine
also ive heard of some guys bending pushrods and breaking the roller rockers is this a setup problem or just a fluke
just wondering when putting this motor back together
or does the stock valves do just fine
also ive heard of some guys bending pushrods and breaking the roller rockers is this a setup problem or just a fluke
just wondering when putting this motor back together
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Briggs Flathead / 12 hp models question
« on: March 27, 2006, 07:39:13 pm »
i recently got 2 power built 12 hp motors
question is do the power built motors have a sleeve in em or just the ic motors
hate to take a head off to find out they both run good yet
question is do the power built motors have a sleeve in em or just the ic motors
hate to take a head off to find out they both run good yet
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Tecumseh Engines / cam question
« on: March 22, 2006, 07:57:16 pm »
just pulled the cam on my 691
question is do i need to put the compression release mechanism back in
or wont the starter turn it without
will the mechanism hold together with the extra rpm it just looks kinda wimpy
question is do i need to put the compression release mechanism back in
or wont the starter turn it without
will the mechanism hold together with the extra rpm it just looks kinda wimpy
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Tecumseh Engines / hooking up a tach
« on: February 19, 2006, 10:55:05 pm »
hey guys
i hooked up a jr dragster tach on my bp and when its runnin under 3000 is gets really jitterey is there any remedy for this
i hooked up a jr dragster tach on my bp and when its runnin under 3000 is gets really jitterey is there any remedy for this
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Tecumseh Engines / roller rockers for v-twin
« on: January 31, 2006, 07:20:18 pm »
have a tvt 691 and looking for roller rockers
are there many companys making them
does anyone know who has them
thanks guys
are there many companys making them
does anyone know who has them
thanks guys
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Tecumseh Engines / tach on a v-twin
« on: January 19, 2006, 08:21:23 pm »
can i use a jr dragster tach on my tvt 691 in jegs it says briggs only
or do i gotta use a digitron
or do i gotta use a digitron
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Tecumseh Engines / exhaust systems
« on: January 06, 2006, 06:34:26 pm »
with the vtwins should one run straight duals or an xpipe or just a balance pipe between the duals
ive read, with cars the xpipe makes more power and scavenges better
anyone experimented with this stuff does it make a difference on these motors
ive read, with cars the xpipe makes more power and scavenges better
anyone experimented with this stuff does it make a difference on these motors
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Tecumseh Engines / plating the cylinders
« on: January 05, 2006, 11:23:12 pm »
has anyone toyed with the idea of plating the cylinders like motorcycles or snowmobiles have wondering would this be worth it or just too expensive for the durability
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