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Operation NP435 & Over Drive


FuzzFace2

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Yeah Jim, Gary must have interacted with lords and ladies...:nabble_laughing-25-x-25_orig:

'Taking the mickey' is the less crass version, but what you said is definitely what I heard and said the most...

And it sounds like the OD is working out great Dave, enjoy it!:nabble_smiley_good:

Well Rob, Gary seems to have both a good lord and a good lady at his side, so there's nothing wrong with that! :nabble_smiley_good:

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You guys are right - I am BLESSED!

I edited my post to speed / RPM of what I got on the ride home from work today.

I did 40 - 55 MPH direct and 45 - 55 OD, I did not check the other speeds / RPM's as they seam to be ok.

The first tanks fulls did not get the MPG higher (@65 MPH) but I will run 2 more tanks fulls just to make sure.

Then I will run 2 tanks fulls @70 MPH to see what that gives me, nay be lugging the motor at 65 MPH?

I also feel the carb is really out of wack as it was really messed up when I rebuilt it and I think the rod / seat (main jet set up) has been jacked with and it running way to rich to only be getting high 14's to mid 15's

Dave ----

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I edited my post to speed / RPM of what I got on the ride home from work today.

I did 40 - 55 MPH direct and 45 - 55 OD, I did not check the other speeds / RPM's as they seam to be ok.

The first tanks fulls did not get the MPG higher (@65 MPH) but I will run 2 more tanks fulls just to make sure.

Then I will run 2 tanks fulls @70 MPH to see what that gives me, nay be lugging the motor at 65 MPH?

I also feel the carb is really out of wack as it was really messed up when I rebuilt it and I think the rod / seat (main jet set up) has been jacked with and it running way to rich to only be getting high 14's to mid 15's

Dave ----

Jonathan just put a Chinese clone YF on his truck.

Maybe watch to see what he encounters???

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Jonathan just put a Chinese clone YF on his truck.

Maybe watch to see what he encounters???

Hope he posts what he finds if anything with that carb.

Mine runs great other than the bad MPG and I really think someone messed with the Rod & Seat adjustment because everything else was messed with, sheet metal screws use in some holes and no screws in others, choke hot air was missing a fitting, just an over all MESS!

When I rebuilt the carb the paper did not list an adjustment for the R&S so I did not touch it, who would right?

I want to run 2 more full tanks at 70 MPH and see what that gets me, last 2 were at 65 MPH as that is what I was doing with out the over drive.

Then I will check the timing & and look deeper into the R&S adjustment.

Dave ----

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I want to run 2 more full tanks at 70 MPH and see what that gets me, last 2 were at 65 MPH as that is what I was doing with out the over drive.

Then I will check the timing & and look deeper into the R&S adjustment.

Dave ----

When I saw the speeds you are driving, I remembered posting a review of trips to Skiatook, OK over the years and thought I would share:

2014 55-62 mph with no aerodynamic modifications = 21.93 mpg [highest tank = 23.26 mpg]

2015 55-62 mph with aerodynamic modifications = 24.13 mpg [highest tank = 25.72 mpg]

2016 55-70 mph [weighted towards 65-70] with aerodynamic modifications = 22.05 mpg [highest tank = 23.46 mpg]

2017 Missing data due to having driven another vehicle.

2018 65-75 mph [closer to 75] with no aerodynamic modifications] = 19.87 mpg [highest tank = 21.3 mpg]

2019 65-75 mph with aerodynamic modifications = 21.65 mpg [highest tank = 21.95 mpg]

2019 60-75 mph with partial [see explanation, above] aerodynamic modifications = 19.12 mpg [highest tank = 21.17 mpg]

 

 

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I want to run 2 more full tanks at 70 MPH and see what that gets me, last 2 were at 65 MPH as that is what I was doing with out the over drive.

Then I will check the timing & and look deeper into the R&S adjustment.

Dave ----

When I saw the speeds you are driving, I remembered posting a review of trips to Skiatook, OK over the years and thought I would share:

2014 55-62 mph with no aerodynamic modifications = 21.93 mpg [highest tank = 23.26 mpg]

2015 55-62 mph with aerodynamic modifications = 24.13 mpg [highest tank = 25.72 mpg]

2016 55-70 mph [weighted towards 65-70] with aerodynamic modifications = 22.05 mpg [highest tank = 23.46 mpg]

2017 Missing data due to having driven another vehicle.

2018 65-75 mph [closer to 75] with no aerodynamic modifications] = 19.87 mpg [highest tank = 21.3 mpg]

2019 65-75 mph with aerodynamic modifications = 21.65 mpg [highest tank = 21.95 mpg]

2019 60-75 mph with partial [see explanation, above] aerodynamic modifications = 19.12 mpg [highest tank = 21.17 mpg]

I would love to get your lowest of 19 or even mid 17's I could live with.

When I am ready to really get into this MPG thing I need to find your post of what was done for timing, carb and aero to get the numbers you did.

With the over drive I have been shifting at or just below 2000 RPM and even on the high way in over drive @ 70 MPH it is just at 2000 RPM IIRC, but I have been running 65 MPH because that was what I was running with out the over drive to get a good reading of apples to apples.

My gut tells me my main jet (rod & seat) have been played with before I got the truck. The carb was missing screws, had wrong type (sheet metal) screws and had parts in the wrong place.

I did not adjust the rod & seat as the paper did not give specs on it so I left it.

I don't have the money for a wide band AFR gauge so going to have to wing it but I am guessing if the rod goes deeper into the seat it would be leaner?

Some day I will jump into it LOL

Thanks for the information

Dave ----

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