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What next? STILL not running right? |
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TRBenj 
Grand Poobah 
Joined: June-29-2005 Location: NWCT Status: Offline Points: 21171 |
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 Posted: August-16-2010 at 2:57pm |
Doc, dont mention it. If the prop has been eliminated thats terrific- Steve's first post implied that a 12x13 (possibly unknown?) was swapped on at the same time as the new head, whereas he had been running a 12x12 previously. Sorry for the confusion. I clearly dont know the ins and outs of this engine nor its history well enough to comment beyond what I thought was an obvious thing to eliminate as a variable, and I did not mean to imply otherwise. Carry on. |
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boat dr
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Joined: June-27-2004 Location: United States Status: Offline Points: 4245 |
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Posted: August-16-2010 at 3:16pm |
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You sound just like Obama with that comment Timmy.
"That was what I said, just not what I meant." I may be wrong , but the tool I have seen you use the most is a BUFFER at Green Lake.That requires a lot of trouble shooting ability don't it????? |
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behindpropeller
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Joined: July-31-2006 Status: Offline Points: 1810 |
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Posted: August-16-2010 at 3:38pm |
Some more great Boat Dr. posts. Forget your meds again today, Billy? |
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62 wood
Grand Poobah
Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: August-16-2010 at 3:41pm |
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Hey... I used a buffer at GL...
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62 wood
Grand Poobah
Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: August-24-2010 at 2:24pm |
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UPDATE....
last weekend changes... 1)changed prop from 12x12 to 12x10. 2)put new Autolite 45 spark plugs 3) made a 'reducer gasket' with a 1 3/8" hole to install below the SS adapter elbow I made. This was done to mimick the hole size of the original elbow adapter. 4) check fuel pressure..9psi RESULTS?? Went up to 3 grand...on plane....then fell on its face.. just like it did at 2200R's. I did find a couple of old 1bbl downdraft carbs. Hoping to try and jury-rig one of those to eliminate sidedraft and adapter el.. signed, getting old and tired. . |
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Riley
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Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7953 |
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Posted: August-24-2010 at 2:39pm |
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Steve, We ran ours this past weekend with the new solid fuel line. The tach is a little crazy as at times it reads 3800 at WOT and at other times it reads 4500 at WOT, but the engine sounds the same. With a 12x8 it turned in 31.7 MPH.
So your runs 3000 regardless of the prop that it is turning? That is strange. |
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: August-24-2010 at 2:44pm |
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It's almost like you have some kind of invisible governor restricting it.
Any chance you're running into a valve float issue? Not sure how you would even test for this as it would be compression loss at higher RPMs. I'm just thinking with the head swap, maybe the pushrods aren't following the same path anymore and maybe causing something in the valve-train to bind? |
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62 wood
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Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: August-24-2010 at 3:01pm |
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Brian,
I cant imagine valve float issues. the head has solid lifters and new valves and springs. One thing that did change a little is the rocker geometry...the head was milled .060 .. |
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: August-24-2010 at 3:32pm |
Just figured I'd throw that one out there, it does seem like a long shot. Just running low on stones to overturn. |
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62 wood
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Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: August-24-2010 at 4:35pm |
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Thanks for offering the input.. at this point anything is appreciated!
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peter1234
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Joined: February-03-2008 Location: United States Status: Offline Points: 2756 |
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Posted: August-24-2010 at 5:13pm |
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when it falls flat on its face ...has anyone run it without the engine cover and a either a temp clear gas line or a glass fuel filter to see if it in fact running out of gas? or vac locking somehow? and when you say falls flat . does it slowly diminish power and revs or is it sudden
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former skylark owner now a formula but I cant let this place go
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peter1234
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Joined: February-03-2008 Location: United States Status: Offline Points: 2756 |
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Posted: August-24-2010 at 5:22pm |
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sorry went back and reread ... try running it without the cover shoot some w d on spray into carb when it feels topped out rpm wise see if the rpms pick up it will at least tell you if its a wot fuel starvation issue (I know it sounds weird but it works on snow machines when you cant tell its leaning out from fuel delivery) plus w d burns when atomized and is safer than any other spray i can think of.
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former skylark owner now a formula but I cant let this place go
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peter1234
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Joined: February-03-2008 Location: United States Status: Offline Points: 2756 |
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Posted: August-25-2010 at 9:20pm |
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scared you guys off with that one
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former skylark owner now a formula but I cant let this place go
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8122pbrainard
Grand Poobah
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-25-2010 at 9:40pm |
Peter, You didn't scare us off. If you read the thread in it's entirety, you would have noticed we already tried to see if the engine was starving for gas!!  BTW, it's not!
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62 wood
Grand Poobah
Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: August-25-2010 at 11:51pm |
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I may try the wd40 next time out for kicks. I'm hoping to get a 1bbl downdraft carb adapted to it. That will eliminate the sidedraft and the SS adapter I made. ... not sure when I'll get time to try that tho.
Also hope to get a "non-boating" buddy that messes with older stuff to go out with me sometime to see what he thinks. BTW, you guys call them snowmachines out your way also!?? I think the guys from MN and SD call them that as well. We call them sleds... 
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62 wood
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Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: October-28-2010 at 5:40pm |
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A few weeks ago I had a friend go out with me. I was running a 12x10 and had installed a temporary fuel pressure gauge and a downdraft carb. Ran great ...for about 30 seconds. About 5 seconds before it would fall flat on her face, the fuel pressure dropped to zilch. At idle she would run 8 to 9 lbs. After some dinking around - trying a few different things, we came to the conclusion the electric fuel pump at the gas tank was the culprit. (the only pump I had been running for the past 4 years). The guy that rebuilt my mechanical pump last summer told me it was ok to leave it there. Wrong! Talking with Billy, he said the mechanical pump can actually pull the anti-drainback valve closed...shutting off the fuel supply. (after thinking a bit more about that, wouldnt the mechanical pump pull the valve open?) Anyway, we eliminated that pump completely and it is RUNNING! The other thing with the electric pump is, sometimes it worked ...sometimes it didnt. Soooo, after screwing away most of the summer, looks like it ended up being something so simple. I've run it 4 or 5 hrs since. I still need too get the prop and carb dialed in, but it did run. I never thought I'd be so happy to have a 6 banger running! . |
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skutsch
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Joined: June-19-2008 Location: Racine, WI Status: Offline Points: 2874 |
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Posted: October-28-2010 at 5:43pm |
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Steve, that is absolutely GREAT news. Also I bet Pete will be happy to use this a classic example to "Keep it original!"
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storm34
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Joined: November-03-2008 Location: Dexter Iowa Status: Offline Points: 4492 |
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Posted: October-28-2010 at 5:55pm |
 Just in time to put it away for the winter!!!
It'll make the muscatine show that much more enjoyable! Cant wait ti FINALLY GO! |
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: October-28-2010 at 9:32pm |
That is good news Steve,at least you won't have think about it all winter now. And to our other Steve,before I read your post,I was thinking the same 
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62 wood
Grand Poobah
Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: October-28-2010 at 10:21pm |
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Thanks guys..
even after my buddy went out with me that day, and we thought we had it figured out, it was hard to get too excited right then and there. I had been disappointed too many times this summer. Like I was saying. I still have some carb tuning and prop pitch issues to figure out next spring. btw, Steve did you get that wheel for your dads boat,hows it look? |
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skutsch
Grand Poobah
Joined: June-19-2008 Location: Racine, WI Status: Offline Points: 2874 |
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Posted: October-28-2010 at 10:37pm |
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I did get the wheel. It may be more then I am up for, its in really rough shape. Still weighing the options... Also at looking at sending it out for restoration. We'll see what happens.
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62 wood
Grand Poobah
Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Posted: October-28-2010 at 11:16pm |
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My original wheel is pretty tough too. The hub had pieces broken out in two places, as well as cracks in the spokes/rim. I got the hub built back up with epoxy last winter...and then it sat all summer. It makes a good "cold weather" project.
Guess they just dont make 45 year old wheels like they used to?
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Riley
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Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7953 |
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Posted: October-29-2010 at 10:42am |
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So it was a fuel issue! You didn't tell us you replaced the fuel pump. I find it interesting that your engine can handle a lot more prop than ours.
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boat dr wrote: