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Crashtd420

A 521 in Massachusetts

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Thanks..... 

The sad part is I actually really liked my job.... oh well... such is life....

 

And the truck has been great... just took a test ride to pick my son up at school....

Engine really liked the valve adjustment and no coolant leaks so on to the next task....

 

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Well the next task I decided was gonna be the idle solenoid.... after looking at the firewall idea I realized it was just gonna be a pain in the ass to line up and adjust things...

 

I decided the arm on the back of the carburetor is the better way.... 

I looked through the extra parts I got with the weber and found this....

 

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Would have been nice but I couldn't orientate it any way that the solenoid could actuate it....

 

so I stuck with the original arm....

 

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I flipped the arm to reorient it and then trimmed it because it was hitting the intake...

 

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 I have a bracket I'm working on, more on that tomorrow.... 

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I'm glad you're starting to see things my way ;)

 

But seriously, that is the way to go.  Then isolate the shaft from the pedal/cable return spring and you'll be golden.

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I always did but executing it is a different story....

 

Even now my idea to power it off the ac interior fans didnt work out..... when I disconnected the fan motors it had 3 wires.... when I tested them they all powered the fans... 1 2 3.... 

Low - medium - high, when one comes on the other shuts off.... only 1 active at a time.....

 

I thought about trying to diode isolate the three to trigger a relay and then i took the easy way out.... just used one of the extra dash switches I had....

 

This actually works out good for me... I dont use a choke when I warm up my truck so I have to wait a minute when I first start it , then keep the idle up some till it warms up a bit before I can jump out and lock the garage door...

Well this switch will do that for me too, hold a higher idle even if the ac isnt on...

 

 

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This is the bracket I made...

 

Works good but adjusting not so much... I couldn't figure out how to lock it in place.. for now I just shimmed it between the solenoid and the bracket and tightened the nut...

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I'll take some pics once installed, paints drying and i am having some lunch...

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20191001-122023.jpg

 

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Seems to do what it needs to... hopefully it holds the setting and doesnt bend or anything.... 

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So I figured out a way to adjust it after the fact.... right know its holding a good high idle for me so I'll leave it alone, but

If I need to I can simply drill and tap a hole in the arm attached the carburetor and add a set screw....

 

Tomorrow is the dyno run, excited to see how it does and of course there has to be an issue, but luckily it won't be a problem...

 

My o2 sensor has being giving a couple weird reading and now I'm convinced it needs replacing.... And I cant get one locally.... 

 

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Damn and then I take it for a blast up the highway and held 4th at wot.... I got one miss fire then it cleared so hopefully that was a fluke.....

 

I'll take it for a ride in the morning and make sure it's good before the appointment... 

 

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Earlier this year i had this miss and I reduced the total advance from 32 to 28 and the problem went away....

Well I just remembered I creeped it back up to 30.... but I've never ran the rpms this high ..... hopefully that's it.... 

I'll change the curve in the morning and take it for a quick ride... 

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Results are in.... apparently this dyno is a bit more accurate then some others around.... and that the dyno I was on before exaggerates the number by 10%... so before I was only at 77 hp...

Well after a couple different jet combos I have some really good info to further tune with... 

 

And what I ended up at was...

95.2 hp to the ground at 6200rpm

98 ftlbs of torque... 

 

He thinks I might be able to get to the 100 or damn close, but i need some smaller air correctors. I put the richest one I had in and I could have gone a few steps smaller... he also thinks with more fuel at the top I might be able to get away with a little more timing....

 

All in all I'm pretty happy with the results  ... I'll post some videos and pics  later..

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Ok datsunmike make me sad.....

 

So in a dyno run I would assume you would want to be in 4th gear because that is a 1:1 ratio right.....

 

Well I just watched the videos I took and I'm 99.9% sure hes in 3rd gear on all the power pulls.... 

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1 hour ago, Crashtd420 said:

Ok datsunmike make me sad.....

 

So in a dyno run I would assume you would want to be in 4th gear because that is a 1:1 ratio right.....

 

Well I just watched the videos I took and I'm 99.9% sure hes in 3rd gear on all the power pulls.... 

 

It would depend on your final ratios... but I did a quick search... bored at work.... sounds like 3rd gear is not uncommon, and is a little easier on the engine, especially at the lower RPMs.  

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33 minutes ago, demo243 said:

 

It would depend on your final ratios... but I did a quick search... bored at work.... sounds like 3rd gear is not uncommon, and is a little easier on the engine, especially at the lower RPMs.  

I dont know enough about any of that... I emailer the dyno operator just to see what he says.... either way I'm happy...

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24 minutes ago, BrothersGarage said:

Hows she feel driving?

Has been feeling really good driving lately, i generally dont go above 5000 so getting to rev and still make power up over 6000 was sweet....

 The emulsion tube was a big key to fixing the transition flat spot...

With the new info i know i need to lean out around 2500rpm and then richen the top end and I should have the air/fuel spot on....

I just got the email with the dyno sheets, I'll post those in a minute and try to get a video or 2 up later when I have more time. .  

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Basically I need to level the center of that graph...  I'm hoping to go one leaner on the main and then richer with the air corrector..... 

Maybe that's where the custom emulsion tube comes in.... 

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Fifth gear?????????

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2 hours ago, datzenmike said:

Fifth gear?????????

I think 3rd....

Dyno sheet shows the peak hp at 67 mph ... 

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