November 12th
This update basically just shows some pictures of the chrome moly rollcage once it was completed. Once the rollcage is painted and a new headliner installed, we will reinstall the windshield and finish up the interior.
Side bars were bent slightly for easier
entrance and braced on the backside. This design allows for a future updrade
to an X brace setup if ever needed.
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All corner joints were gusseted with
3/4" chrome moly tubing. Clearance above cage is where the headliner
goes. Once the headliner is installed, the cage is very "tight".
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This image shows the pillar bars going
through the dash. This was by far the most difficult bar to fabricate
due to the compound bends required to follow the roofline, mimic the pillar
angle and go through the dash down to the floor.
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Click on any image above for a larger view. Most of these images are just various angles of the finished cage. The picture to the far right shows a closeup of the pillar bar going through the dash. In the next update, the car will have the full interior installed complete with new carpet, new headliner and all factory power accessories(power seats, locks, and windows). |
November 26th
We are waiting for a few accessories to arrive so we have decided to do a non-interior update this time and get back to the interior once we have everything we need to finish. Since the car is only getting heavier with all the new suspension and rollcage, we decided to start looking for areas to save some weight. The only weight lost so far is in the removal of the air conditioning, ECM and factory engine harness, and replacing the rear brakes with a Wilwood brake kit.
We will be running a tubular K-member and tubular A-arms up front as well as Hal coilover shocks which will hopefully drop another 50 lbs. or so, that will be a future update. The installation of our suspension didn't add too much weight(about 24 lbs. total including the subframe connectors)since it mostly replaced existing pieces, however the Moser 9 Inch added 38lbs by itself. While installing the chrome moly rollcage, each bar was weighed before installing and the total weight ended up being 72 lbs. So far this is where we stand on documented weight:
So far we are already 47 lbs. heavier than stock but that should be offset by the tubular k-member and A-arms. We still have a heavy turbo, intercooler and lines to add not to mention all the intake and exhaust plumbing for the turbo. Our goal is to try and be as close to the stock weight of 3350 lbs. as possible so we have our work cut out for us. |
One thing we noticed was how heavy the front bumper was so we decided to remove it and weigh it - 27.25 lbs! Since this is on the extreme nose of the car, reducing it's weight yields two benefits: easier weight transfer and less overall weight. |
There really isn't a way to remove the bumper entirely since the nose bolts to it in various areas. Also the plastic impact strips serve as a support for the soft rubber nose assembly to keep it from collapsing at high MPH. This made it necesarry to fabricate a tubular version with the supports and mounts for the plastic. Using chrome moly tubing, we ended up saving 18.75 lbs. |
These pictures illustrate the mounting and position
of the tubular bumper as compared to stock.
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There will be future weight savings updates as we document each additional step in the buildup.
December 22nd
We are still a couple of months away from getting the motor out of the machine shop(still waiting on custom parts to be made) but in the meantime I wanted to get started on the turbo and intercooler mounting and get the stainless headers built. With the limited engine bay room of the F-Body chassis, we anticipated this as being the most difficult part of the buildup and wanted to get a head start on it so that when the motor is ready, we can just drop it in a "semi-finished" engine bay. In these images you can see a dummy block we are using to mock up the engine. We also purchased a set of lightweight plastic heads and intake from P-Ayr Products. These are great. They are exact replicas of OEM engine parts right down to the threaded bolt holes. Many chassis shops and a lot of Nascar teams use them for chassis building because they are light and easy to move around. You can get anything from an old flathead Ford motor to a new Cadillac Northstar. The ones pictures are GM's SB2 heads and intake manifold.
In image 1 you can see the aluminum motor plate used for locating the front of the engine. There is also a steel midplate in the rear that "sandwiches" between the motor and transmission. Slightly visible in this image you can also see the prototype BMR k-member with a Pinto manual rack-n-pinion. The k-members are still scheduled for avilability in mid to late January. Image 2 shows the modified cowl area required to clear the tall intake manifold and elbow. After a little trimming, all the stock windshield cowl plastic still fits(wish I could say that about the hood). Image 3 shows the air conditioning delete plate. Once the air was removed, an aluminum panel was fabricated and bolted to the stock holes then seam sealed. |
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