Monday, January 25, 2016

I've got this place that I've filled with empty space

Much like the mighty grizzly emerges from hibernation, this blog is slowly emerging from the slumber induced by my wedding and honeymoon. 

The word "honeymoon" comes from the old Germanic tradition of
mooning one's honey on the first day of honeymoon


First off, build-threads.com posted the top 10 most popular posts of 2015 and I was completely stoked to see that this project came in at #10. Read the article here.


A couple months ago, while still working on the Ranger project, I took Grace for a drive to capture some video and audio (which turned out to be nothing but wind noise). As I was getting on the freeway at full throttle, something went wrong. I suddenly smelled and saw oil smoke and it seemed like it was overheating. I took it easy and got off the next exit. I shut the engine down and contemplated the depth and breadth of the universe as the engine cooled off. Restarting was hard, power was low, and the exhaust was full of oil smoke. 

Grace sat for several weeks as I completed the Ranger project, which by the way, successfully made the long journey from Pasadena, California to Provo, Utah over Christmas break. Finally about a week before the wedding, I got a chance to attend to the ailing Falcon. I suspected a head gasket might be the reason for Grace's health issues, so I got out the compression tester. When the readings came out at 158, 138, 157 and 155 psi on cylinders 1, 2, 3, and 4 respectively, I was optimistic that the issue was a $13 head gasket while simultaneously praying it wasn't a melted piston.

Oily misfiring plug from cylinder #2
Carbon coated plug due to rich mixture
New spark plug, the old ones were due for replacement
Braided nylon coating on turbo oil feed was damaging the wiring
Peek-a-boo!

When I got the intake manifold off, I could very clearly see where the ol girl had puked a gasket. With the head removed I could get a good look at the gasket damage, and the fire ring had pushed all the way out to the oil drain channel, which would explain the oily smoke. I slapped in a new gasket and Grace was happier than a Chinese firework vendor on the Fourth of July.



Fast forward almost two months to mid-January and I'm now the happy Chinese firework vendor because I get some time to work on the car. Grace lives in my wife's Grandma's garage which for some unexplicable reason has tile and carpet on the floor. I half expected there to be a toilet in the corner. In any case, it's not a place where I am able to fabricate. Thankfully, my old roommate Vaughn is willing to let me use the old carport as a workspace from time to time in exchange for Dewskis.

One issue in dire need of attention was that of the vibrations transmitted into the body by the engine. Being an inline four without balance shafts, it has a ton of inherent vibrations. At times, riding in the car was about as pleasant as hanging out in the expansion chamber of a two-stroke bike. The reverberation of the body panels were enough to give me a headache, and I'd wear earplugs any time I drove the car for more than about ten minutes. I decided I would remake the engine mounting bracketry to use the stock style motor mounts for a Ford Ranger with the 2.3. I figured if the damping characteristics of those mounts were good enough for Ford engineers, they would be good enough for me.

Left: new ranger style motor mount  Right: old polyurethane bushing mouts
The size difference should give a clue as to which is more effective in vibration isolation

Passenger's Side
old motor mount bracketry
Cutting frame brackets off

Tacking new mounts in place
New welded motor mount bracket
Bottom view
Finished and installed
Driver's Side

Using g my favorite old trick: cardboard fabrication 
Cutting old bracket off
Bracket needed a slight bend, so I scored it, bent, and welded the gap

Gusset added and installed

Even before I started this project, I knew I was going to have to get a new transmission. The bearings were noisy, and syncros were getting to be oh so crunchy. I knew I did not want to get yet another junkyard transmission since I'd been through three or four of those, so I looked at aftermarket options. I liked the idea of a Tremec T56 6-speed, but they can be a bit heavy and expensive, and the gearing was a bit high for my application, so I would probably have to eventuallly re-gear the rear end. The gearing and price issue was also true of the TKO 5-speed option. In the end I decided a rebuilt T-5 from a V8 Mustang would be my best option. I called Tony at Astro Performance Warehouse to discuss my options. I wanted a bit higher gearing since my 3.97:1 gear ratio was too low, so I decided to switch to a 3.35 first gear ration. This transmission also made the overdrive a bit taller ratio, going from .79 to .68, which should bring the cruising RPM down a bit.

I ordered the transmission last year, and it showed up right about the same time as the wedding, so it sat at my old house and waited for it's time. On Friday I was talking with my all-American friend Andrew (Andrew loves monster trucks, drag racing, and BBQ. Seriously, he loves BBQ more than anyone I know) and he said he wanted to get out of the house. I told him he was in luck because I knew of a car that needed a transmission swapped. With his assistance I got the transmission out and changed in no time. 

Andrew, while similar in appearance to the author, is a separate entity


Unfortunately I didn't get the engine back up and running, because I ran out of time. Before Andrew came over to assist, I spent a couple hours fabricating a new transmission crossmember, instead of getting the engine ready for removal. The new mount is usable, but not finished. I will add an arch in the passenger's side of the crossmember to provide clearance for the exhaust system, which I will soon re-route and finish.

Top: old crossmember  Bottom:new crossmember


In the meantime, enjoy this fine gif Google made from my wedding and a fastback Falcon I found on Facebook.







Friday, November 27, 2015

And the towels are oh so fluffy

When I last posted, I had just started and driven the Ranger, but it was not quite finished yet. As of this posting, the Ranger is a roadworthy motor carriage, suitable for transporting those ignorant or desperate enough to ride in it. There have been an number of small tasks to complete to achieve this, but I'll keep it short and show just a few of those.


revised air intake with straight air flow path behind the MAF

Idle misfire caused by loose connections on ignition coils and...

...worn out spark plugs

New spark plugs

Hole cut in coil pack cover to allow ignition coils to run cooler
because some kid named Jack said it was a good idea

The wiring mess that makes this thing run

Crappy RB20 Ford Ranger engine bay shot

And now, the moment you've all been waiting for: 

BLACK FRIDAY SALE!!! 98% OFF!! MURDER YOUR FELLOW SHOPPERS FOR THE CHANCE TO BUY MORE CRAP YOU DON'T NEED!! 

Wait, no, that wasn't it. Let me try again.

VIDEOS WITH DECENT AUDIO!!!


Walk around video




Driving video


On that (exhaust) note, I'll wrap it up. No funny pictures for you this time, I'm going to bed. Happy Hanuchristmakwanzmadan, hope you don't get the diabeetus this holiday season.

Saturday, November 7, 2015

Boogity Boogity Boogity, Amen



This post is about a week late, but sometimes real life gets in the way of building ridiculous machines. I'm writing this post from my hotel room in Japan. Every year I have to come here twice to discuss the jobs I manage with my Japanese counterparts who requested the work. I'm not complaining since it's nice to have a change of pace, but sometimes it's a bit inconvenient. Enough "not complaining", let's talk about ridiculous machines. When last gave an update, I had just had the fuel injectors cleaned and they were ready to be installed. Well, that happened and I found a few small issues with the fuel system. There was a nylon hose that had a tendency to kink, so I remade it so that it wouldn ' t kink. Additionally a compression fitting was a little loose but once I tightened it, there were no issues.

I had to add two temperature sensors to the the cooling system (so now there are four sensors because more is always better). The stock cooling system has two sensors, one for the ECU and one for the instrument panel. I had to add a sensor that matches the Ranger temperature gauge, and a sensor that controls the electric cooling fans.

Removing the engine for the last time


Coolant Temp Sensor bungs

This swap also placed the shifter too close to the bench seat so I modified the shifter handle to allow a full range of motion. The shaft is moved forward to clear the seat. It looks a little goofy, but works just fine.





One of the final tasks before starting the engine was to drain the old transmission fluid and refill with fresh syncromesh fluid. When I pulled the drain plug, I was glad that I had decided to change the fluid rather than just top it off. The magnetic drain plug had developed a furry metallic hairdo, made of bits of gears and dog clutches. Not wanting those violently discarded bits to find their way into a bushing or bearing, I cleaned the drain plug and refilled the transmission.




The RB20's mass air flow meter has a unique flange which does not make mounting an air filter an easy task, so I had to make an adapter. Out came the cutoff wheel and welder, and I whipped up another ugly, but functional part. The flange warped from the heat of welding and I did not have a good way to flatten it, so I applied some foam tape to the circumference of the hole in the flange to seal it.






With all the pieces in place, I could finally try to fire it up. With the key on, the fuel pump would prime but the starter would not engage, so I just hotwired the truck to start it. It worked out pretty well. The engine fired almost immediately and sounded fantastic. 


Eventually I took the truck for a spin around the block and it is smooth as butter until you start to get into the boost. It sounds like Lucifer's vacuum cleaner at that point, which I think is normal for the RB20DET but it also begins to buck and surge which is not normal. I think the mass air flow meter is unhappy with it's location. In it's current configuration, the airflow path almost makes a U-turn right behind the meter, which is very different than the stock configuration This causes problems because at higher flow rates, the air ends up "dodging" the airflow meter's probe. The probe is in the center of the meter, and the meter expects that the flow through the center of the meter will increase proportionally to the total flow through the meter. When there is a bend immediately before or after an airflow meter, the flow through the center of the meter is no longer proportional to the total flow through the meter, and the ECU can no longer determine the correct amount of fuel to inject, causing the bucking and surging. Next time I work on the truck i will change the intake.


Bonus:. This was a side project that Jen and I had during the past few weeks While furniture shopping (so wierd, since when did I furniture shop ??) Jen pointed out a couple tables she liked, and when I saw the price tag I had my typical knee-jerk reaction of "PFFFFFT! We can do better than that!" Jen agreed so we spent a little time putting together a couple tables.






Bonus # 2:. A Nascar invocation-turned-song will be stuck in your head all day.