S550 GT350R Race Car Build Build Thread Profile - S550 Mustangs

[Black Boss]

Turns out the Ohlin inverted struts are no longer available, so I'm going with the JRi Double Adjustable -- they showed up today:

 

[bpracer]

Turns out the Ohlin inverted struts are no longer available, so I'm going with the JRi Double Adjustable -- they showed up today:

View attachment 6625

You saw the post from Spartan saying he had to swap out the rear control arm to make the lower shock mount work with the JRi set-up? I think I'm remembering that correctly.

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[Black Boss]

You saw the post from Spartan saying he had to swap out the rear control arm to make the lower shock mount work with the JRi set-up? I think I'm remembering that correctly.

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Yes. Unfortunately the lower Magneride mount has a 3.5" bolt pitch, while the base S550 is 3". All the coilovers (including FP350S) are designed for the base S550 LCA.

 

[honeybadger]

Hey Nick - when you deleted the EVAP canister/system, etc. at the rear of the car, what was required? I assume the computer won't appreciate just ripping it out, right?

 

[Black Boss]

I ran the fuel tank vent to the inner wheel arch, leaving the pressure switch in place and plugged off the return to the engine. No issues, but I never ran the stock tune, as I switched from Flat Plane to Cross Plane. @spartan may have....

I assume it'll throw codes, and may trigger a CEL. It would be easy to check, just disconnect the harness from the EVAP unit.

 

[honeybadger]

Thanks, Nick!

In the middle of a rebuild, so no engine to test with at the moment. But I will be running a tune from AED, so we can adjust if needed.

Car's badass. Enjoying your journey, brother!

 

[spartan]

Hey Nick - when you deleted the EVAP canister/system, etc. at the rear of the car, what was required? I assume the computer won't appreciate just ripping it out, right?

I got a code PO446. Evap canister code. Will have to address this with a tune.


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[Black Boss]

Phase 2 of the build starts with GT4 front splitter install:

 

[Black Boss]

Brake cooling ducts prepped, ready for install:

 

[Black Boss]

Cooling ducts installed:

 

[Black Boss]

Removed Magneride suspension and ride height sensors and installed JRi’s up front:

 

[Black Boss]

Brake ducting completed:

 

[Bill Pemberton]

Now that looks fantastic, professional , efficient , and about 20 more adjectives I could throw out there! It gives me , and likely a lot of others, an idea on what we should be doing to modify our setups?!

 

[Black Boss]

Got the front suspension completed:


Moving on, got the rear stripped out:


Pulled the half shaft while I’m at it and will replace with heavy duty boot version from GT4 (upper):

 

[spartan]

Got the front suspension completed:
View attachment 7187

Moving on, got the rear stripped out:
View attachment 7188

Pulled the half shaft while I’m at it and will replace with heavy duty boot version from GT4 (upper):
View attachment 7189

Looks like you fabricated a custom clevis to allow the use of the GT350 LCA. Nice move.

 

[Black Boss]

Looks like you fabricated a custom clevis to allow the use of the GT350 LCA. Nice move.

Yes — didn’t want to have to move the Cortex bushings to non mangneride LCA’s.

Meanwhile, rear coil overs, FTB camber link and upgraded halfshafts installed:

 

[Black Boss]

Half Shafts were really tough to remove. Had to replace the Diff seals:

 

[Black Boss]

So the rear JRi’s don’t fit with either the stock rear end links or the MMR adjustable end links with the FP rear sway bar on the soft setting.

Working with Dean Martin on a solution.

 

[honeybadger]

Brake ducting completed:

View attachment 7179

Hey Nick -

Working on a set for the OEM GT350 brakes myself and have a couple of questions if you don’t mind.

1. Did you end up using 4in pipe coming off the plate? Or did you go with something slightly smaller like 3.5/3.75? Bit concerned about getting the hose over the massively disconfigured pipe

2. Were to able to get all airflow directly into the rotor? Or do you have some hitting the back of the rotor surface? I have about 20% overlap on my first prototype.

 

[Black Boss]

@honeybadger

I used 4”pipe and hose.

I made the pipe oval where it is welded to the plate and cut the plate to exactly follow the inner rotor diameter so that the airflow is directed to the inner cooling vanes.

As a result the plate slightly blanks off some of the oval pipe, but I wanted to avoid differential cooling of the inner rotor surface.