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Author Topic: POLARACO Updated 4-14-08  (Read 5813 times)

Steve

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POLARACO Updated 4-14-08
« Reply #45 on: April 14, 2008, 04:25:54 PM »

Update
 
Took Polaraco out on Rt 80 for a 71 Mile round trip jaunt.  Filled the tank when I left.  Previous thread. . .Stopped back after the trip.  All I could sqeeze into the tank was 3 gallons.   About 10 miles were stop and go to Bobs shop.
 
Not bad considering most of that end of Rt 80 is all hills up and down.  Cruised with the cruse control at around 70 MPH the whole time except for the turn around and a few gooses to change lanes,  Two WOT's while merging. . . . Not really trying hard.
 
I got
 
[color=#ff0000 size=7]23.6666  MPG[/color]
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Jimmy

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POLARACO Updated 4-14-08
« Reply #46 on: April 14, 2008, 04:41:43 PM »

[color=#ff0000 size=6]DON'T CHANGE A THING!!![/color]
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Steve

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POLARACO Updated 4-14-08
« Reply #47 on: April 14, 2008, 05:10:57 PM »

You got that right Jim. . .  There's nothing left to change anyway. 
 
Would you believe I had to tune it up already?  Almost 11,000 miles since I started driving it.  It will get more when Bob's done with it.
 
POLARACO2008-04-14 22:11:54
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Leaburn Patey

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POLARACO Updated 4-14-08
« Reply #48 on: April 14, 2008, 05:34:40 PM »

That's Dippy MPG material,Steve.
She gets 24 on the highway.
You need to drive the car more often on longer stretches.
It took over 10-15,000 miles for my NY'ers 440 to break in and settle down.Still runs great.
 
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Steve

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POLARACO Updated 4-14-08
« Reply #49 on: April 14, 2008, 05:59:19 PM »

Cripes Lea. . You can park the dippy inside the Polaraco.  It's probably 500 pounds lighter too.  I had some stop and go too.  It wasn't a true test. . that was preliminary.  Lots of hills, alittle stop and go. . .  I really wasn't trying.
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James Brown Jr,

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POLARACO Updated 4-14-08
« Reply #50 on: April 15, 2008, 09:13:50 PM »

well there ya go steve i'm happy for ya.congrats on economy
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firedome

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POLARACO Updated 4-14-08
« Reply #51 on: April 16, 2008, 04:48:05 AM »

That's amazing mpg for a car that size & weight!! Without me going
back thru all the hsitory to look, Polaraco has a newer, not a stock
engine, right?  That kind of fuel efficiency makes it almost
practical as a daily driver!! I bet gas will be $4.00 by the end of the
year, though...boo!

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Steve

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POLARACO Updated 4-14-08
« Reply #52 on: April 16, 2008, 06:11:09 AM »

Yes it's a 92 Magnum 5.2 with the factory computer and a 518 overdrive trans in a 72 Polara.  The two worst parts were the trans mount and the electrical.
 
Some guys have done this with 5.9's in A's and B's.  But they go for performance.  I had a dream.  .and it came true.  Yeah buddy!
 
As far as I know, it's the only C body in the world done to this level.  I suppose, if I wanted, I could go all the way with it and perf it out.  But that defeats the purpose.
 
POLARACO2008-04-16 11:13:02
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firedome

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POLARACO Updated 4-14-08
« Reply #53 on: April 16, 2008, 11:20:31 AM »

What were the actual differences between the Magnum 5.2 and 5.9 and the 318/360 they were based on - assuming that fuel inj. replaced carbs, etc...  I 've always wondered if there were internal changes...  and whether they as bulletproof?
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Steve

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POLARACO Updated 4-14-08
« Reply #54 on: April 16, 2008, 11:33:49 AM »

Magnums have high flow heads and slightly bigger valves.  I believe just the exhaust.  Magnums have roller lifters and use a higher alloy iron for the block.  You can put 200,000 miles on one and only have about .005 ridge.
 
You can bolt Magnum heads to an LA and do the same thing.  But you need to use a different push rod to get oil up to the top. 
 
Looking at one installed, it looks like the Magnum is a wider wedge, but it's probably deceiving.  It seems to sit different in the engine compartment.  I guess I am comparing it to a 65 to 68 which had a narrower fender well then the 72 has.
 
POLARACO2008-04-17 17:36:39
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Mike

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POLARACO Updated 4-14-08
« Reply #55 on: April 17, 2008, 10:16:42 AM »

You are the man Steve, you have turned the Polaraco around full circle
glad its shapping up to how you've wanted it to be for sometime now.

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Matt Aker

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POLARACO Updated 4-14-08
« Reply #56 on: April 17, 2008, 03:23:36 PM »

23.4 MPH is very commendable, good show Steve!  Jimmy said it best...  DON'T CHANGE A THING!
 
I got the same mileage from a 440 once, between Myrtle Beach and West Va.  Nobody believed me on THAT board, all highway and 75mph.  I filled it and was in disbelief myself  I thought my sending unit was reading incorrectly.
 
It's all in how you drive...  and you can't stuff 10-gallons of shiite in a 5-gallon bucket!
 
My '66 NYer got almost 24 mpg once.....     those were the days!
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Steve

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POLARACO Updated 4-14-08
« Reply #57 on: April 17, 2008, 04:15:25 PM »

Well this may be a shocker to you, , , ,
 
The next day, I drove the car on a bunch of short highway trips.  Car never really had a chance to cool down so I didn't loose anything there.  Total for that was 127 miles on 5 Gallons!  Do the math
 
As soon as I get this left bushing replaced and a good alignment, I am taking it on a long trip.  It may get all the way up to our original estimates of 27.  I did the math carefully on that to come up with that.  Ofcoarse there are always variables.
 
For a while there, I thought I had a major screwup in my building of the engine.  But as in many cases, my instincts told me to put the O2 sensor near the engine.  I speced it that way when the duals were done.  But Ol' Nick there decided to do it's way.  You can bet he caught a pile of crap from me about that!
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Stitcherbob

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POLARACO Updated 4-14-08
« Reply #58 on: April 17, 2008, 08:03:54 PM »


Quote from: MoparMatt
23.4 MPH is very commendable, good show Steve!  Jimmy said it best...  DON'T CHANGE A THING!
 
I got the same mileage from a 440 once, between Myrtle Beach and West Va.  Nobody believed me on THAT board, all highway and 75mph.  I filled it and was in disbelief myself  I thought my sending unit was reading incorrectly.
 
It's all in how you drive...  and you can't stuff 10-gallons of shiite in a 5-gallon bucket!
 


I think a relatively stock 440 in a C body with a 440 6 bbl intake would return good economy numbers on steady highway miles because you would be running off a center 2bbl carb mostly. Add a 4speed 518 with an Ultrabell to fit the RB engine and wonder what the MPG would be then?
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Steve

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POLARACO Updated 4-14-08
« Reply #59 on: April 18, 2008, 12:31:16 PM »

But you also said a 440 is allot of cavity to fill too.
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