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| http:/www.4x4wire.com/toyota/projects/roktoy9/ | Short Cuts | ||||
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By: Jay Kopycinski - 12/2002
As mentioned previously, the engine for the new rig is a salvaged 1994 Chevy 5.7l TBI V8 with about 62k miles on it. Engine mounts were fabricated as described in the Drivetrain Mounting section. Final pics are shown here as well.
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| Front view of passenger mount | Driver side motor mount on frame | Top-down view showing brace | Inside view looking forward |
With the rolling chassis ready to go, it was time to drop the engine back in for the final time. The engine, less exhaust manifolds, fits between the hood rail tubes with a few inches of clearance on each side.
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| 1994 Chevy 5.7l TBI engine | Lifting the engine for install | Going in between hood rails | Engine final resting place |
With the engine bolted in, it was time to add the peripherals and such. I used Holley Flowtech truck headers to get the gases routed out of the engine. The headers then mate to a homebrew y-pipe I fabricated from scratch. I wanted to make sure the exhaust was fitted up tight in the chassis and routed exactly as I wanted. I used various pieces of mandrel bent exhaust tubing to fabricate the y-pipe. The two sides are built from 2" tubing and then dump into a single 2.5" tube under the driver side floor. Headers and y-pipe were all painted with Eastwood stainless exhaust paint.
The Holley headers have an installed bung to accept a one-wire O2 sensor up near the engine. This location was too near the rear of the driver side tire, so I welded in a sensor bung at the end of the new y-pipe and used the stock three-wire heated O2 sensor at this point.
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| Header installed on engine | Homebrew fabricated y-pipe | Exhaust pipe and O2 sensor |
For cooling I chose to use a custom Howe built aluminum radiator with Chevy hose size outlets. For a tranny cooler I chose to use a B&M Supercooler rated at 24,000 GVWR. This cooler was mounted to the front of the radiator. I fabricated small steel boxes on the inside of each frame rail to support the lower two corners of the radiator. On top, I added a steel clamp mount that bolts down to the top hood tube and firmly sandwiches the radiator between rubber padded mounts. Lastly, I added a Jeg's overflow catch can to hold excess radiator fluid.
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| Howe aluminum radiator | One lower radiator mount | Installed radiator and upper mount | View of radiator & tranny cooler | Jeg's plastic catch can at firewall |
The stock 19" engine fan and clutch were used. I fabricated a custom radiator shroud from thin sheet steel. To bend the sheet I quickly put together a rudimentary sheet metal brake. It was surprisingly easy and worked well to bend the thin steel I used.
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| Homebrew radiator shroud | Homebrew sheet metal brake | Shroud mounted to radiator | Another view of shroud & fan |
I searched through lots of radiator hoses at the auto parts store until I found a formed hose that would work well for the upper hose. For the lower hose, I simply used a generic flex hose.
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| Upper radiator hose | Lower radiator hose |
More to follow........
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