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- #41
Well, Sgt Gunner and I are back from our maiden cruise in 44 - we had a wonderful time and drove just over 700 miles.
Tech things first... I had two minor issues with 44 - and would appreciate your thoughts:
1. Acceleration really bogs down on tough climbs - heading into Austin, NV, on US 50, from the east, the grade is fairly severe (we encountered many other more severe grades off road), 44 bogged down to 35 mph (never lower) and the vacuum gauge dropped to 1.
I assume the deceleration on the climbs were the result of the low compression numbers I reported earlier, in this thread. Am I correct that there is a direct correlation between deceleration and low vacuum? Stupid question? Perhaps... it seems obvious that when the engine isn't producing much power, it also isn't producing much vacuum, but I could be wrong.
2. 44 quit running, at 55 mph, just as we crested a grade, coming south out of Tonopah, NV- I coasted off the pavement, over the shoulder and up a hill (to ensure it would be safe to work on 44). I suspected 'fuel starvation' and pulled the air cleaner so I could check the (Aisin carb Jim C just rebuilt) sight glass. The glass showed no fuel and there was a ring of engine oil around the mouth of the carb.
I'm sure the engine oil was from the air cleaner - it always has a couple of tablespoons of oil in the air cleaner, from blow-by. I choked the carb and turned the key and the GR Starter got it started on the third try. I shut it down and restarted on the first try - no choke.
It was hot in Tonopah (about 100*) and the wind was BLOWING - I have a bastardized carb cooling fan, on a manual timer, so I turned it on for an hour and continued driving with the fan running and made the final 3.5 hour drive home, with no further problems.
I'm sure 44 died because the fuel boiled out of the carb - even though the engine never overheats (about half-way on the gauge), it is VERY hot under the hood.
Does anyone see this issue as something other than what I've diagnosed?
Thanks to all who respond!
Now... the non-tech report: 44 performed awesomely - I'm VERY pleased!
Out of the 700 miles, approximately 200 were off-highway (very little 'no-road' travel - maybe 4 miles) - the off-highway driving consisted of gravel roads, dirt lanes (some 4Hi and some 4Lo) and fording about 2 dozen streams (none deeper than 18").
We saw a lot of beautiful landscapes (especially in the Toiyabe Mountain Range (both east and west side of the Arc Dome Wilderness)) several ghost towns, a few old mines, a couple of current mines, two abandoned ranches and a lot of abandoned buildings.
My two 20L jerry cans came in very handy twice - without them, I would have run out of gas before I could get to the next gas station... or, I would have had to stay on-road and have missed a lot of great country. I can't wait to get my aux tank installed this winter!
I averaged 12+ mpg (on and off road) - that's considerably better than the 7 mpg I was getting before Jim C rebuilt my carb.
Here are three pics:
the first is where we camped the first night - we slept in 44 on the side of a mountain, after a 4Lo climb (needed 4Lo for one berm - maybe this was my first indication that 44 bogs down on a climb...).
The second is where we climbed from the 'T' intersection, in the middle of the top-half of the pic:
The third is where we tent camped the last two nights - on the San Juan Creek, in the Toiyabe Range - Gunner walked into the pic.
Tech things first... I had two minor issues with 44 - and would appreciate your thoughts:
1. Acceleration really bogs down on tough climbs - heading into Austin, NV, on US 50, from the east, the grade is fairly severe (we encountered many other more severe grades off road), 44 bogged down to 35 mph (never lower) and the vacuum gauge dropped to 1.
I assume the deceleration on the climbs were the result of the low compression numbers I reported earlier, in this thread. Am I correct that there is a direct correlation between deceleration and low vacuum? Stupid question? Perhaps... it seems obvious that when the engine isn't producing much power, it also isn't producing much vacuum, but I could be wrong.
2. 44 quit running, at 55 mph, just as we crested a grade, coming south out of Tonopah, NV- I coasted off the pavement, over the shoulder and up a hill (to ensure it would be safe to work on 44). I suspected 'fuel starvation' and pulled the air cleaner so I could check the (Aisin carb Jim C just rebuilt) sight glass. The glass showed no fuel and there was a ring of engine oil around the mouth of the carb.
I'm sure the engine oil was from the air cleaner - it always has a couple of tablespoons of oil in the air cleaner, from blow-by. I choked the carb and turned the key and the GR Starter got it started on the third try. I shut it down and restarted on the first try - no choke.
It was hot in Tonopah (about 100*) and the wind was BLOWING - I have a bastardized carb cooling fan, on a manual timer, so I turned it on for an hour and continued driving with the fan running and made the final 3.5 hour drive home, with no further problems.
I'm sure 44 died because the fuel boiled out of the carb - even though the engine never overheats (about half-way on the gauge), it is VERY hot under the hood.
Does anyone see this issue as something other than what I've diagnosed?
Thanks to all who respond!
Now... the non-tech report: 44 performed awesomely - I'm VERY pleased!
Out of the 700 miles, approximately 200 were off-highway (very little 'no-road' travel - maybe 4 miles) - the off-highway driving consisted of gravel roads, dirt lanes (some 4Hi and some 4Lo) and fording about 2 dozen streams (none deeper than 18").
We saw a lot of beautiful landscapes (especially in the Toiyabe Mountain Range (both east and west side of the Arc Dome Wilderness)) several ghost towns, a few old mines, a couple of current mines, two abandoned ranches and a lot of abandoned buildings.
My two 20L jerry cans came in very handy twice - without them, I would have run out of gas before I could get to the next gas station... or, I would have had to stay on-road and have missed a lot of great country. I can't wait to get my aux tank installed this winter!
I averaged 12+ mpg (on and off road) - that's considerably better than the 7 mpg I was getting before Jim C rebuilt my carb.
Here are three pics:
the first is where we camped the first night - we slept in 44 on the side of a mountain, after a 4Lo climb (needed 4Lo for one berm - maybe this was my first indication that 44 bogs down on a climb...).
The second is where we climbed from the 'T' intersection, in the middle of the top-half of the pic:
The third is where we tent camped the last two nights - on the San Juan Creek, in the Toiyabe Range - Gunner walked into the pic.
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