Assorted Fuel System Modifications

Fuel Pump and Fuel Lines

Fuel Pump and Fuel Lines

The Original Fuel System

The fuel system consists of the fuel tank, the fuel pump, the carburetters and the air cleaners. The original fuel system included the following: Fuel tank: 14.4 U.S. gallon steel tank Fuel pump: SU electric Carburetters: Twin 1 3/4” semi-downdraft HD6 Air Cleaners: Coopers “pancake” type.

 Modified Fuel System

Aluminum Fuel Tank

I replaced the steel tank with an aluminum version sourced from Hemphill’s Healey Haven in Maryland.

Fuel tank aluminum

Aluminum Fule Tank

Solid State SU Fuel Pump

I used the original mounting bracket, but replaced the pump with a solid state version of the original fuel pump. The pump was supplied by Burlen in the U.K.

Solid State Fuel Pump

Solid State Fuel Pump

 Redundant Fuel Pump

I expected the solid state unit to perform better than the original with its “points,” but I still remember problems with the original pump while I was driving the car in college. I would give it a few good “whacks,” and it would start pumping again. I had read about installing a redundant pump either parallel or in-line to avoid dead fuel pump problems. I mounted the auxiliary pump on the rear boot wall and ran it in-line with the SU. The restoration blog explains the installation. I used a Master E8016S electric pump available from Autozone. I installed a toggle switch on a small switch panel under the wiper motor that controls the fuel pumps. At center, neither pump is activated (a great anti-theft device); a throw upward activates the SU pump, and a throw downward activates the Master Pump. The pumps can be switched on the fly.

Master Fuel Pump

Master Fuel Pump

 

Aux fuel pump

Auxiliary Fuel Pump Installed

Toggle Switch Panel

Toggle Switch Panel

Fuel Gauge Dampener

Every Healey owner experiences the erratic swings of the fuel gauge needle. Zims Autotechnik, www.allzim.com , 1804 Reliance Parkway, Bedford, TX 76021, 800-356-2964, sells a little electronic device (see image to the right) that mitigates the needle swing. I believe it was originally conceived for the Porsche 356. Steve Gerow shared this little tip. I ordered one, installed it in a few minutes and sure enough it works! $19.95 for the part. Fuel Gauge Dampener instructions.JPG are provided, but Steve’s photo tells the whole story!

Fuel Gauge Dampener

Fuel Gauge Dampener

 

Carburetters

I replaced the original HD6 SU carbs with 2″ HD8s to boost HP a bit. I purchased these from someone on the Healey list and had them rebuilt by Joe Curto. I was pleased with his results. The older used units polished nicely. Using the HD8s did require switching to a later intake manifold from a BJ8 as well, to take advantage of the 2″ diameter carbs.

HD8 Carbs

HD8 Carbs

Carburetter Choke

The choke mechanism for the BJ8 carbs is a dual line system as opposed to the single cable used with the original HD6 carbs. So, I ordered the HD8 choke bracket and cabling and installed it in the Bloody Beast.

Choke Firewall Bracket

Choke Firewall Bracket

Air Cleaners

In 2008 when I restored my car, I decided to replace the original pancake Cooper air cleaners and use the “itg” competition foam air cleaner available from Denis Welch. The air cleaner is a single unit working with both carburetors. For appearances, I painted the red plastic body of the air cleaner a gloss black.

However, recently, as part of my “ten-year renewal” process I have moved away from the ITG filter and now use twin ram pipes with individual trumpet filters. This change is explained in this post: https://valvechatter.com/?p=12574

ITG Air Cleaner

ITG Air Cleaner

Aston Quick Release Fuel Filler Cap

I like the looks of the racing heritage Aston cap that also has its practical ease of use advantage. To install, it is necessary to cut off the original fuel filler pipe and solder a threaded ring onto the pipe. The cap then screws onto the collar. It gives a very nice finish to the fuel system!

Aston threaded collar

Aston threaded collar

Aston Fuel Filler Cap

Aston Fuel Filler Cap

 

Chapter 47 Restoration Assembly, Week Seventeen 4/9/2007

There wasn’t much time available for Healey work again this weekend. I did install some more Dynamat product over the interior floorboard and the propshaft tunnel. I was then able to glue the black interior vinyl around the handbrake bracket on the tunnel.

Handbrake vinyl

I then installed my rechromed handbrake lever and its mechanism including attaching the cable to the lever and to the bottom of the floor pan to keep it from fouling the propshaft.

Handbrake lever

Handbrake cable clip

Using contact cement, I glued the foam rubber seal to the bottom of the boot in preparation for the fuel tank fitment.

Fuel Tank Seal

Chapter 19 – Cleaning and Trial Fitting

 

May 28, 2004

Front Splash Panels 

Splash Panels – Installed left and right splash panels. I needed to drill 4 new holes on each side of the car in the frame uprights. The left side was difficult and took some hammering and grinding but eventually got it to fit. Use 8 #10 1/2” pan screws to secure.

Right splash panel 1

Right splash panel 2

Radiator Air Deflector – Installed radiator air deflector with two 5/16” x 5/8” bolts.

Air deflector 3

Air deflector 1

Bonnet Upright Brackets – Note the way they are mounted in the photos.

RH Bonnet opening brace 2

LH Bonnet opening brace 3

Front Wing Mounting Brackets – Installed left and right front wing support brackets using 4 1/4” x 3/4” hex head bolts.

RH Shroud bracket 1

LH Shroud bracket 2

June 18, 2004

Rear Axle Revisited 

Differential – Installed the differential pumpkin and bearing caps in the differential casing. I will be installing the 3.44 crown and pinion in the car when it is drivable, but to get a rolling chassis I just put the old differential back in with no pinion gear. Fastened the differential to the axle and inserted the half shafts and tightened them down with the small locating flat head screws. Affixed the rear brake disc rotors and calipers fastened the hub extensions to the axle with the 5 locking hub nuts.

Installing the Rear Axle – After removing the fuel pump and the left bump box we “walked” the axle with the differential into the chassis and superstructure. I may have been able to leave the fuel pump had we had more access room on the right side of the car, but that wasn’t available. I then secured the axle with the Ubolts and the brackets for the tube shocks. The key here is to start each side loosely and then return to fully tighten each side. I never could get the tube shocks to align with the brackets and Udo Putzke thinks it may be because the Jule frame is slightly different than the original AH frame. To his credit he has agreed to make some longer shaft shocks at cost – great customer service!

Bilsteins won’t align

Spring Work

Rear Brake Hose – Added the new stainless braided brake hose between the brake line and the rear junction on the axle.

Stainless Rear Brake line

This work allowed me to put the car on the ground as a rolling chassis for the first time – a significant milestone. In honor of the occasion I stuck on two fenders and placed a seat in the interior for photos. All just for fun. It lasted ten minutes and then off came the wheels/tires and wings and then back up on jack stands for more work! The shiny bonnet is a sample paint color that I would ultimately not use.

Four 0n the Floor 1

1st sitting

1st sitting 5

Driving Light and Tow Brackets – I received the front spotlight and tow hook brackets from Cape International and the rear bumperette (sprite) or Rally Car brackets and “bumpers.”  I discovered that Martin Jansen had not included the threaded tubes for the front bumper that go through the frame. Instead Martin’s are only on the outside of the frame rails which is fine for the bumper brackets, but the spotlight tow hook brackets also have one mounting hole on the inside of the frame rails. I located the holes on the inside of the rail with  3/8” drilled hole and will get Jeremy Turner to add threaded tubes later in the restoration. I also received Kilmartin panels for the frame rails that include the welded nuts for the anti-sway bar and I will give them to Jeremy as well.

Driving light tow hook bracket

Driving Light frame Hole

anti-sway bar frame bracket

Horns – Started on the horn installation. The original horns for the Mark I are no longer available so I used the later version. The older horns must have been a little smaller in diameter, because the horns rubbed against the splash panels when connected with the brackets I had. I modified the brackets by adding a mounting hole and grinding off a bit of the bracket to “shift” the horns toward the center of the car. All of this seemed to work flawlessly, but once again I encountered a job that probably should have taken 10 minutes that ended up taking two hours. The horn wiring harness extensions provided by British Wiring were not needed so I crimped some new connectors on the wire in place of the original bullet connectors and attached them to the horns. The new horns were interesting – both brand new – one gloss black and one satin. I will have Jeremy repaint them.

Horn install left

June 18, 2004

Fuel Sender Unit – Installed the fuel sender unit in the new aluminum fuel tank. The sender unit did not line up exactly as the original because the holes in the tank are not as they were in the steel tank. I sealed the sender unit with a new cork gasket and with Hylomar. Each of the small mounting screws received new copper washers.

Fuel sender unit

New Fuel Tank – Secured the new fuel tank with the two securing straps which I had slightly lengthened to make the fit better. The securing straps fastened to the rear boot wall with brackets and clevis pins.

Aluminum Fuel Tank

Spare tire fitment

Spare Tire Block and Bracket – Installed the new stainless steel spare tire bracket and tie down bar. I had to make a new vinyl covered block to fit on the back boot wall to accommodate the higher spare tire and the slight rise that was “built in” by Martin Jansen. Turned out pretty well. I actually used old naugahyde from my original reupholstery work on the car 20+ years ago!

Spare tire bracket and block 1

spare tire bracket and block 2

Spare Tire Block covering

Fuel Filler Pipe – Installed the fuel pipe rubber gasket on the rear shroud. Lightly smeared Vaseline on the lower section of the fuel pipe and pushed it through the gasket into the boot. The  Aston Cap is secured to the fuel tube with a threaded brass collar. David Nock advised that I should fasten the collar to the tube by reversing the ends and brazing the collar to the tube’s unfinished end. Then I cut off the old cap end to put into the rubber sleeve to connect to the tank neck.

Aston filler Cap 1

Aston threaded collar

Fuel tube cut off

Aston fuel cap on pipe

Steering Cross Bar – After discovering that the new cross bar for the steering was for a BJ8 I ordered new ends and installed the original cross rod. I probably could have used the BJ8 bar but it looked like the original provided a little more adjustment which I think I needed.

Cross rod right

Cross rod left