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As the oil pressure was lost during hard cornering to the right, the engine was yanked, and the oil pan modified with splash plates, which will hopefully keep oil at the pickup. The pickup was also lengthened/lowered half an inch. |
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Left: Right: |
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The wheels were painted black for a change. The drivers seat was moved forward an inch to get a better driving position. The exhaust was redone with only one muffler and a single outlet. The valve lash adjusted and the ignition set earlier.
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...This last thing, adjusting the ignition timing earlier, brougt disaster. When test driven the engine pinged a bit, and when back into the pits, it was evident that something was very wrong, as a lot of smoke was coming out of the crank case vent. |
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After a 1+ year hiatus work with the engine was commenced. Machining had been done earlier,and all parts gathered. |
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The new engine block was thorouhgly cleaned inside and out before paintning. |
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Building an engine consist to a big part of measuring and grinding. The pistons and con rods were balanced to within 0,1 gram, notably the pistons were off by only 0,4 gram (0.0141oz). The piston rings were filed to the recommended clearance, the bearing clearances were measured with plastigage... |
The engine in all it's black and polished aluminum glory. |
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The new gear box and engine in the car. Carbs and exhaust mounted, but some things still missing, like the radiator, oil catch tank, battery and such.
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The car was driven around with a wide band lambda conneted, and trying to tune the carbs. 24 jets were changed before getting the air/fuel ratio ok at all times. Enough fuel at high revs/full throttle was proiritized, then the mid range fueling was leaned out by changing to smaller main jets. The result is a smooth running engine, which hopefully will be reasonably safe to drive hard.
New wheels and wider front tires make the Cortina look very pretty. |
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The new gear box and engine ran very good, and with the new close ratio gears, there's no need to rev over 6,000 rpm before pulling into fourth gear. The new brake pads were a huge miss, they all but melted, causing me to use a gravel zone to the max when only one(!) rear wheel locked up at braking.
Here's Göran's Cortina, with which I was racing this tuesday evening. Except for the brake failure, the test was considered a great success. |
Introduction,
Body work,
Details,
Tech,
On the track 2013
Experiments and modifications
Modifications for the 2014 season
On the track 2014
Modifications 2014-2016
On the track 2016