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1985 Mercury Capri - Gulping Again - Part 2



1985 Mercury Capri Harmonic Damper Removal
Using a puller, Glen Knell removed the harmonic balancer...		 1985 Mercury Capri Water Pump Removal
...along with the water pump and timing cover. At this point we also removed the pushrods and stock lifters.		 1985 Mercury Capri Timing Set Exposed
This exposed the timing chain.
1985 Mercury Capri Removing Timing Set
The chain simply unbolts and then slips off. Despite being fairly new, we replaced it with one supplied by Lunati.		 1985 Mercury Capri Removing Cam
Knell removed the stock cam.		 1985 Mercury Capri Cam Prelube
The Lunati cam received a liberal coating of engine oil and was slipped into the bore.
1985 Mercury Capri Cam Installation
When installing a cam, be careful not to catch the lobes on the bearing surfaces.		 1985 Mercury Capri Rocker Install
At this point the lifters and pushrods were replaced, and the Comp Magnum rockers were bolted down. We also noticed the lifters were beat up, so they will be replaced when we install the heads.		 1985 Mercury Capri Engine Reassembled
Knell buttoned up the rest of the engine and refilled the coolant.
1985 Mercury Capri Dyno Testing
Testing was done on the Dynojet chassis dyno at Crazy Horse Racing. We were careful to maintain consistent coolant temperature each time a pull was made. The Holley pump and Lunati cam kicked up the 302 to the tune of 22.8 hp and 28.9 lb-ft of torque at the peak.		 1985 Mercury Capri Dyno Graph Before And After Cam Install
Here is the graph showing horsepower and torque numbers before and after the cam and pump swap.		 1985 Mercury Capri Dyno Graph Baseline Vs Upgrades
We started this project with the 302 making 207 hp. After installing a fuel pump, a cam, rockers, an intake and a carb, it's cracked 255 hp at the wheels. At the peak, that's 47 hp, however, at 5,500 there's 50 more hp on tap. Best of all, there's a 40hp-plus gain from 4,600 to 5,600 rpm. Likewise, torque is up 26 lb-ft at the peak, but over 40 lb-ft from 4,100 to redline. Next will be a set of the latest AFR 165 Competition heads.
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Related Photos

1985 Mercury Capri Rear View 1985 Mercury Capri Holley Fuel Pump 1985 Mercury Capri Barry Grant Demon 575 Carburetor
1985 Mercury Capri Lunati Cam And Timing Chain 1985 Mercury Capri Comp Cams Rocker Set 1985 Mercury Capri Ford Stock Fuel Pump

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