West Coast Cobra Owner Build Chassis # 3299

[kitcarbp]

2008. Improving the WCC Cooling System

The biggest challenge with any car design that uses a high horsepower motor is to manage the heat rejection through air flow and coolant flow. Cobras are no different. So upon filling my cooling system for the first time I realized the WCC provided radiator leaked as fast as I filled it! What a POS ! That turned out to be a blessing in disguise. The WCC kit supplied radiator was from some stationary engine( generator?) and was a brass and copper design that no joke weighed about 40 pounds! This unit was never designed for automotive use, it had a 4 inch thick core. The radiator is the heart of the cooling system, its the foundation. So I called up a famous radiator company in South Carolina and had a custom aluminum radiator built to my specs to handle 500+ hp
I chose to use twin SPAL 13 inch fans because they are an OEM fan supplier and durable. SPAL fans protect some of the most expensive OEM production engines in the world. They can be trusted. Each fan rated at 1,700 cfm. Other car builders I spoke to advised to always over design the fan size and flow rate. You can control the on /off temp strategy with a controller to optimize them later. I achieved 69% core coverage with these twin fans without a shroud fitted. With both fans running you can hold a sheet of 8.5x11 paper 5 inches away and it will suck it out of you hands. I have air flow!
Dont forget about coolant flow!. You want to maximize the flow at idle for a street car so you can manage the heat in traffic. I ordered a WP pulley to ensure its as small as possible to ensure max coolant flow in the low rpm low air flow through rad modes like traffic. The Ford Racing crate motor used an Edelbrock high flow WP. Contacting Edelbrock they were happy to share the pump curve with me, their customer. I also changed the lower hose design such that the chrome expansion tank 5/8 line fills into the lower hose to reduce air pockets. The last mod was to add a coolant air bleed valve to the water outlet neck on the intake. Its a production GM part. Btw. I learned all these off shore made chrome water outlets are warped about .080” on the gasket surface and leak. I didnt have access to a mill to fix it then so I found an cast iron outlet from a 1969 429. Problem solved.



Here is my sketch and pics of it installed.

[kitcarbp]

2009

So in the Fall of 2009 I was ready to fire it up for the first time. But to be able to test the drive train I needed to install my new custom made driveshaft and needed wheels. I used Denny’s Driveshafts in upstate NY. They are awesome professionals to deal with and made it easy for me. I used 1330 truck flanges at the diff compared to the smaller 1310 pass car flange on the diff as shipped from Ford originally in the 70’s. I found the Team 3 Wheels (formerly ET Mags) from a fellow WCC owner who is a CC forum member too. Love these wheels! He shipped them from CA. They are 12 inches wide for the rear and 8 inches wide for the front. The large rear wheel width allows me to run Drag Radials in 325-50-15 sizes. I started with 265-50-15 in front but recently found larger diameter 235-60-15 to fill more of the wheel well to my liking.

[kitcarbp]

2009

Here is the pic on a November afternoon in 2009 when I pushed the Cobra out of the garage for the first start. I primed the engine beforehand with oil to get psi up and oil up to the rockers. Using a small 1 gallon plastic gas jug as a fuel tank the electric fuel pump primed the fuel system and filled the carb fuel bowls. The sound of the pump whining and changing pitch as pressure builds........priceless! One voice in a symphony of hot rodding. Love it!

It started on the first try. I’ll have to dig up the video and post it here later. The team Cobra photo is how you build a strong pit team. At a very young age. I love the gauge package dashboard I used for engine startup and cam break in. Those are Harbor Freight gauges! Still packed away somewhere in a box in my shop. Lol

[kitcarbp]

2010. Clutch Adjustments

So while the startup and cam break-in went flawlessly i discovered a few things needing correction
1) I was not able to get the clutch to release no matter how many adjustments I made to the pedal and MC linkage. I finally changed my clutch master cylinder to a larger diameter to move the htob farther , increasing its stroke. I moved from a 3/4 inch up to 13/16 and that was the sweet spot. It increased pedal effort of course but solved my problem. The piston lengths available for my McLeod HTOB SEEMED EITHER TOO SHORT OR TOO LONG in my application. Now the clutch was working as it should with the 13/16 MC. If I had to do this all over again I would custom modify a clutchfork to accept an external slave cylinder. I just didnt have those fab skills at the time. Although there are probably some OEM Htob now that I could adapt for Tremec Tko600 use here in 2021. The other lesson learned was next time I would look for a pressure plate that required less finger travel to disengage the disc.

[kitcarbp]

So by the Feb 2010 Im feeling pretty good about the project now in year 5. I have a running driving shifting very expensive go-kart. I had no idea that the easy part was over. Now to find the body. So I called up WCC to get pricing on the phase 2 kit which is supposed to be all the parts to finish the car. After getting pricing from WCC I thought to myself, Self! Im on a budget here, college payments are 4 years away! I bet I can find an unfinished kit somewhere for about 50% of what Vern was asking at WCC in Canada. I had nothing to lose. So more life happens and the cobra sits some more and its March of 2010. I find an unfinished car, complete body with a rare hardtop ( see pic below) and all the exterior bumpers overriders etc but no interior. Its a great deal so I bid and win the car on Flea-Bay. The car arrives from California on a Sunday in April 2010 and is as advertised, surprisingly. Here is WCC kit #2 arriving in Spring of 2010 at my house. My wife begins to think Im crazy. I now own 2 unfinished WCC kits.
I Met the transporter driver at my local high school and dragged the kit home on a trailer. Like the tow vehicle? Lol. Looking at the photos now years later, It shows the Cobra on top of the Ferrari in the delivery truck. How fitting.