Pappy's Adventure - 1981 restomod

[spankrjs]

It's either a "dash pot" or "altitude compensator":

How the Carter BBD Carburetor Works

www.carburetor-parts.com

Something to with meeting emissions on high altitude models, above 4,000 feet elevation. I am not sure what it does or how it works, never had one with this device or researched what it does.

Does it have a wire or vacuum port? If not, might just be a method to keep the throttle from closing too fast and causing a temporary rich condition. The Sol-Vac on the '83 and up models will do the same thing. My '85 with fully intact emissions/computer controlled carb will do this sometimes: driving at a steady high speed, let off gas to slow down for say a red light, it will temporarily keep idle high for a few seconds, then release and drop to base idle. I would guess yours is a similar doo-hickey, purely for emissions.

 

[TimmyTooTall]

It's either a "dash pot" or "altitude compensator":

Ah ha! I figured it was something added on. That makes sense as it was sold in Grand junction.

Does it have a wire or vacuum port? If not, might just be a method to keep the throttle from closing too fast and causing a temporary rich condition.

No wires or vacuum port. Strictly mechanical with a diaphragm and a spring. That makes a lot of sense as I notice when it's cold the engine tends to idle high until it warms up a bit or I goose the throttle to move what I now know is this valve. Very interesting.

Thanks for the insight Spank!

 

[TimmyTooTall]

Well here goes nothing! Might be able to start the process sometime this week. Flu has ravaged the household this past week so we'll see. First step is dropping the tank and getting the new fuel pump installed.

Excited!

 

[TimmyTooTall]

Disassembly and clean up is going well. Hit my first road block with the EGR delete. Does anyone know fittings size to plug the EGR hose holes on the intake and exhaust manifolds? Thought about having someone weld a plug on top of these fittings if I can't find something.

 

[FLCJ8]

Disassembly and clean up is going well. Hit my first road block with the EGR delete. Does anyone know fittings size to plug the EGR hose holes on the intake and exhaust manifolds? Thought about having someone weld a plug on top of these fittings if I can't find something.

View attachment 112544

According to the factory parts manual there is also a plug option for the exhaust manifold opening. (Unsure if both manifold ports are the same)
The part number is J0639979.
Looks like a 7/8"-18 thread.

Here is the info on the part number at RockAuto

DORMAN 090011 Oil Drain Plug | Shop Now at RockAuto

DORMAN Engine Parts and More for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

[spankrjs]

According to the factory parts manual there is also a plug option for the exhaust manifold opening. (Unsure if both manifold ports are the same)
The part number is J0639979.
Looks like a 7/8"-18 thread.

Here is the info on the part number at RockAuto

DORMAN 090011 Oil Drain Plug | Shop Now at RockAuto

DORMAN Engine Parts and More for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

That is exactly what I have used in the past

 

[TimmyTooTall]

That is exactly what I have used in the past

For both opening?

Thanks gents!

 

[spankrjs]

For both opening?

Thanks gents!

Yes

 

[TimmyTooTall]

The dorman plugs were the correct thread pitch indeed. I added a few washers because the plug was bottoming out before the top of the bolt was flush with the manifold surface.


Wires, wires and MORE wires. Relooming all this stuff is going to be a project on its own.

 

[TimmyTooTall]

Got all the wires and fuel lines connected and fired up on the first crank! The idle was so much nicer than the Carter carb. We let it run for a while and warm up to temp. Discovered a fuel leak. Turns out a pin hole had developed in the bottom of the gas tank. So I ordered a new tank from summit...

That's where I'm at. Wait for the new tank and busy week ahead at work. After we get the tank I'll recheck timing before moving into the hyper spark part of the install.

Tim

https://imgur.com/a/F972WNu

 

[Grendel]

You'll dig the Sniper.

What fuel pump did you install in the tank?

 

[barrys]

How do you like that Lager? They started making some in Florida. I heard it tastes WAY different than the stuff the make up here in PA, all about the water. Was told it's the same with "Cheesesteak" rolls not made in the area with Philly water.

 

[Chamba]

You'll love that Sniper. I tried the FiTech first and it was evil. Sniper was totally trouble-free and it just gets better over the first couple weeks as it 'learns'. You'll love throttle response too.
Holey in tank pump is great too. Hardest part is getting all the high pressure fuel lines sorted out. Once you've got that sorted it's easy- peasy. I turn my ignition to 'on' while the pump cycles for 5 seconds, then it fires right up every time.
I used to be a die-hard carb guy.... no more.

 

[TimmyTooTall]

You'll dig the Sniper.

What fuel pump did you install in the tank?

I used Holleys in tank pump. Pricey but plug and play with the rest of their harness. The sending unit measured a better level on the gauge than the OEM sending unit.

How do you like that Lager? They started making some in Florida. I heard it tastes WAY different than the stuff the make up here in PA, all about the water. Was told it's the same with "Cheesesteak" rolls not made in the area with Philly water.

It's not the same as a cold draft pour but its always stocked in my garage fridge.

You'll love that Sniper. I tried the FiTech first and it was evil. Sniper was totally trouble-free and it just gets better over the first couple weeks as it 'learns'. You'll love throttle response too.
Holey in tank pump is great too. Hardest part is getting all the high pressure fuel lines sorted out. Once you've got that sorted it's easy- peasy. I turn my ignition to 'on' while the pump cycles for 5 seconds, then it fires right up every time.
I used to be a die-hard carb guy.... no more.

So far I'm blow away. The idle alone makes the engine sound like a completely different motor. The burn is cleaner. It cranks in 2 seconds vs the cold start carb routine.... Cant wait to drive it. New dorman gas tank is installed. It's got minor dimensional differences but fit almost like a glove in the OEM tank skid.

We put a timing light on it last night and the idle timing (750ish rpm) with it warmed up was only 4 maybe 5*. From everything I've read it's supposed to be 8*. We're planning on installing the hyperspark components tomorrow so that will be a breeze to set up the idle timing. Interested to see the difference. Then starts the wiring cleanup.... Oh man.

 

[Grendel]

I used Holleys in tank pump. Pricey but plug and play with the rest of their harness. The sending unit measured a better level on the gauge than the OEM sending unit.

Thanks. I am going back and forth on building my own, the Holley set up (have Sniper and Hyperspark on a lot of vehicles) or a Novak, which I've installed before too.

Thing is, I have an LH6 in my Scrambler, so no Sniper harness for this.

 

[TimmyTooTall]

Got the sniper and hyperspark all wired up and running. Spent majority of my time slowly running and terminating all the wires properly as I could. There's so many off shoots of the harness now with the sniper it's not a big clean loom across the back of the firewall but managed to get it looking decent. It was a very intimidating task for someome who's never tore into a harness before.

Prior the the hyperspark it was firing up really well cold and hot. Had to fiddle with the tuning a bunch after the hyperspark install. It was cranking incredibly rich. Found out the "cranking fuel" parameter was 20+#s per hour. Most of what I read on the forums was the little engine need between 4 and 5#s. Fixed that and I have a decent cold start and a quick hot start. Going to start diving more into some of the cranking tuning options to get a more crisp cold start.

Driving is incredible. Good power throughout all driving conditions. With the cold start I can put it straight into gear and go vs the terrible bogging I had with the Carter.

Need to work up a better throttle return spring setup. Removed the previous bracket with the EGR removal. Any suggestions?

Got a fixed orifice PCV valve that Holley recommended. Still need to install the new charcoal canister. Overall happy to be back driving for the upcoming spring warm up!

 

[TimmyTooTall]

Couple more fun upgrades before the summer. JB fab twin sticks. Had to bend them about 15* to clear the passenger seat. Retro sounds radio and amp with some Polk speakers. And a Midland 50watt GMRS radio. Ditched the CB. Few more maintenance/check items before heading to Colorado this summer.

 

[TimmyTooTall]

Back in the garage with multiple projects going on.

First off is the rock hard sport cage. What a pain in the butt to get it all fitted and aligned. I ended up getting longer bolts to pull the clasps together around the stock roll bar bends. This will come off soon for paint.

 

[TimmyTooTall]

Next is the AX15 swap. This was always the plan when I decided to gear the axles 4.56. I'll be able to get a nice cruising rpm at 65mph again.

Old SR4 is out. Got the old pilot bushing out. Had to drill and chisel it out. Wet paper towels/grease ect wasn't cutting it. New pilot bushing say in the freezer for a week and tapped in with a bit of effort.






It looks like the shifter should come through close to the same spot as the SR4 even with the Novak adapter.

 

[TimmyTooTall]

Testing out the D300 adapter clocking ring positions before getting the transmission in. This is the 8* setting. Well see if the ears have any contact with the tub.




Nice flat clocking angle.


Regardless of what angle I use I'll probably have to elongate the shifting hardware. Haven't made up my mind which route I want to take just yet.



16* clocking angle. One of the ears hits the transmission. May end up clearancing that ear if the 8* position ends up with tub clearance issues.