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Author Topic: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"  (Read 5261 times)

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Backtobasics

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The kids have dubbed it the :Duplomat:   :roll: 


Some rust repair, from under the vinyl top.






« Last Edit: June 22, 2015, 10:58:43 by Backtobasics »
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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #1 on: June 22, 2015, 11:01:27 »


Vinyl top removal.














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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #2 on: June 22, 2015, 11:04:53 »


The reason for the wet floors.  Cowl rust.







This has been wire brushed, rust neutralized, and covered with FLEX SEAL (the stuff from TV)  I need to make one more pass on both sides, but the cowl is just about sealed.  This is what happens when the cars  are left outside, with no cover.  CLEAN OUT YOUR COWLS!



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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #3 on: June 22, 2015, 11:08:05 »





















Installation soon.  Used Torker Intake, Demon Carb (my first new carb, ever!)  plus cam and lifter kit (454 / 272) and an HEI ignition conversion (ditch ballast resistor and ignition box) with vacuum advance distributor.
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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #4 on: June 22, 2015, 11:10:03 »

It's definitely a Monday Morning.  Car wouldn't restart nicely at gas station, starter has been misbehaving, and the exhaust tried to fall out from underneath.  It is at the shop now, getting a starter installed, plus true duals with Flowmaster (knockoffs) and turn down at the axle.  It should have a nice sound, and help.  Hopefully it will support the engine mods down the line.
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Darth-Car

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #5 on: June 22, 2015, 17:21:13 »

Keep the faith.  You are working hard at it.  It will be worth it in the end.  Nice job with the photo documentation.  We feel like we are right there with you.
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Until The Next Dimension,
The Admiral
Dayton, Ohio, USA

Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #6 on: June 23, 2015, 10:42:13 »

The car got a new fuel pump (by previous owner, at time of pickup), and it now as a new starter relay, new starter, and complete new exhaust.  The shop ran 2.25 exhaust from manifolds back to rear axle, with Flowmaster knock offs turn down at the axle.  The piping is only 2" off the manifolds, but it will do for a while.  Eventually, it will get a hot 360 with headers and spray.  For now, it sounds good at idle and part throttle, but not so great at mid throttle, but I attribute it to the engine itself (smog compression and miniscule camshaft).  Right now, it doesn't matter if I am half throttle or full throttle, it doesn't go any faster. 


I am anxious to get the intake / carb / cam kit /  timing chain / HEI conversion installed. 

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Darth-Car

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #7 on: June 23, 2015, 16:35:51 »

It will not go faster until you change the pumpkin.  The engine mods will not really make you go with these cars.
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The Admiral
Dayton, Ohio, USA

80 Lebaron Coupe

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #8 on: June 23, 2015, 16:53:31 »

It will not go faster until you change the pumpkin.  The engine mods will not really make you go with these cars.
X2
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88 Dodge Diplomat AHB
80 Plymouth Volare Duster
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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #9 on: June 24, 2015, 16:06:22 »

I hear ya, Gents.
This is my daily driver, and needs to be able to go 65 on the highway.


Eventually, the goal is a hot 360 with OD trans.  That will allow a more aggressive gearset, but changing to a 3.55 now and buzzing the engine on the highway doesn't make fiscal or sanity sense.


Surely a performance cam, intake, carb, and ignition will help, a lot.  I am sure this engine is so smogged, that the camshaft might not even have lobes.

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fifthcrunch

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #10 on: June 25, 2015, 05:09:14 »

The stuff you're doing will make a big difference.  It definitely won't be a tire-smoking monster without different gearing, but mine really benefited from the cam, 4 bbl, distributor, and hei ignition.  It couldn't get out of its own way before.
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DobaMark

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #11 on: June 26, 2015, 07:54:39 »

You need two things if you expect performance.
A rear gear axle change and some compression, both are pretty bad in your car.  Cam/carb/etc. can actually make the car slower when you bolt them on a low compression motor with a freeway gear (but given enough time to get the speed up top end will be great).
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Backtobasics

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #12 on: June 26, 2015, 09:32:18 »

I hear ya.  Long term will get an aggressive 360, but for the time being, I am looking to wake the 318 up a bit.  I didn't go stupid on cam, intake and carb (454 lift / 272 duration), torker intake, and vacuum secondary carb.  I believe the ignition upgrade alone should be helpful.  I can't fathom the logic that said "let's drop the voltage down with a resister".   
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1988 Fifth Ave
1987 Diplomat
1989 Diplomat AHB
1979 Lebaron Medallion 4dr
1979 Lebaron Coupe
1977 Aspen R/T
All drivers.
Too many cars and still looking.

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Re: Build thread - 1979 Dodge Diplomat - AKA - "The Duplomat"
« Reply #14 on: June 26, 2015, 17:56:24 »

This would save bodywork.
http://www.dippy.org/forum2/index.php?topic=14457.0
X2.
I myself wouldnt put all that time and money into a rusty car.
But, Its not my time and money.
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5 1980 & 81 M Coupes
88 Dodge Diplomat AHB
80 Plymouth Volare Duster
83 Dodge Mirada
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