BlueBird - Page 17

Topic: BlueBird (Read 47197 times) previous topic - next topic

Re: BlueBird

Reply #240 – March 28, 2020, 10:23:33 PM

And today, I mounted the hydroboost

Re: BlueBird

Reply #241 – March 29, 2020, 08:42:16 PM

I snagged the P/S cooler loop from the crashed Mustang core support and fitted it around the Fox condenser

Then I threw parts at the left side of the engine bay until I found locations that would allow everything to cohabitate

Re: BlueBird

Reply #242 – March 30, 2020, 08:29:57 PM

So if you do not mind, what is the measurement from the pivot point to the dowel pin on the brake pedal?

Re: BlueBird

Reply #243 – March 30, 2020, 08:43:09 PM

100% didn't measure anything. I used info Hidley posted in bodyman's thread as a general reference for where I needed to go, then I picked one stud on the hydroboost that made sense for locating the unit as a whole, and relocated the pin accordingly.

Quote from: Jack Hidley – on June 25, 2014, 04:02:23 AM

...
I think you are going to have one problem with the hydroboost installation. All of the 1987-88 T-Birds have a 3.5:1 pedal ratio. That is the pedal pad moves 3.5 units for each unit that it pushes the m/c pushrod. I do not have the data for your 1985 2.3l turbo, but I assume it is the same. You can check you pedal ratio be measuring the physical brake pedal dimensions and dividing one by the other.

The Mustang that you pulled the hydroboost unit from has a pedal ratio of 4.75:1.

Since you appear to have connected the hydroboost unit pushrod to the 3.5:1 pedal pin, the required pedal effort and travel is going to be quite a bit different than what Ford designed. The brake pedal effort is going to be 36% (4.75/3.5) higher. The travel at the pedal pad is going to be reduced by the same amount.

To correctly fix this, the pin on the brake pedal should be moved upwards slightly less than 1" (0.97") and the hydroboost unit should be raised on the firewall to correctly align the pushrod so it is straight.
...

Re: BlueBird

Reply #244 – March 30, 2020, 10:00:38 PM

That is what I needed and thank you.

Re: BlueBird

Reply #245 – March 31, 2020, 02:15:49 PM

Dumb question but why not just use the hydroboost pedal?

Re: BlueBird

Reply #246 – March 31, 2020, 03:41:45 PM

The SN95 pedal assembly might fit our cars but I do not know for sure. If they fit a Fox Mustang then I would be highly confident it would work.

Trying to make the brake pedal fit a Fox upper assembly might not work.

Re: BlueBird

Reply #247 – March 31, 2020, 03:47:22 PM

The sn95 pedal box is different and not a direct bolt in for a Fox. I sold the set I had before I ever compared swapping the brake pedal itself into a Fox pedal box.

Re: BlueBird

Reply #248 – March 31, 2020, 04:37:38 PM

I had looked at using a SN95 pedal assembly because the spacing for the clutch is further out.
Here's the thread I saw about doing the conversion:
https://www.modularfords.com/threads/109943-How-to-use-Cobra-(SN95)-pedals-in-fox

Re: BlueBird

Reply #249 – April 19, 2020, 10:08:02 PM

I have spent the last couple weeks of shop time chasing myself around in circles, starting 15 different tasks, but not getting much of anything finished.

Two new hydroboost lines installed, third one repaired(return line is NLA)
Fit the '97 PCM in the stock location and installed the main harness
Laid the rest of the engine bay wiring in for mockup, scoured EVTMs to begin interfacing 1997 wires into 1987 car
Removed new wiring harness and set aside to clean and pare down later
Junkyard run for injectors and a handful of bits that were smashed in the crash
Began disassembly of the engine for cleaning
Sidetracked into mocking up new coolant pipes for the heater core
Cleaned lots of battery acid induced corrosion off of engine bits

None of this really makes good pics, but I took one today after the first valve cover was finished

Also note the new injectors installed in the intake on the far right. The PO of this engine had swapped out the OE 24lb injectors for stock 2v 19lb units to keep the GT PCM happy. It ran OK with this set up but was clearly handicapped by the GT maps and rev limiter. These are GM 36lb injectors from the Series II 3800. They should run about 33lb at Ford rail pressure and provide plenty of fuel to get a good tune on this mild combo.

I am about out of patience for cleaning, and I need a big visual marker to boost motivation. Paint the k-member, run some brake lines, trim the shifter hole, and cut out some spacers for k-member mounting. Then, I should be able to stuff the drivetrain into the car all clean and pretty.

...and circle back for the wiring I put aside....

Re: BlueBird

Reply #250 – April 20, 2020, 12:17:44 AM

Progress is progress, even if you can't see huge results!

Re: BlueBird

Reply #251 – April 21, 2020, 08:44:24 PM

Clean enough for driver status. Parts mock up

Re: BlueBird

Reply #252 – April 21, 2020, 08:47:38 PM

That thing is a chunker.

Re: BlueBird

Reply #253 – April 24, 2020, 08:15:22 PM

Pulled the Kmember free of the engine, broke out the pressure washer, and them slathered on a couple coats of Ford Grey tractor paint

While that cured, I started on the brake lines. This one is almost done, and the other two are less complex, so maybe I can have the brake lines all wrapped up on Sunday.

Re: BlueBird

Reply #254 – April 24, 2020, 08:33:02 PM

Toight!

What material are those lines?