25-11-2017, 04:13 PM
(This post was last modified: 25-11-2017, 04:28 PM by Tony Betts.)
[attachment=1430]Just found some of the cut up block parts from the NEW blocks I had made.
Might be helpful to show differences in water flow in new over old parts.
[attachment=1431]
[attachment=1432]
[attachment=1433]
[attachment=1434]
The last two pictures show the importance of proofing an item.
We had to do 18 changes to the pattern, and the casting pattern and box had to be totally remade 3 times to make the casting work.
However the difference in new and old blocks was clear, mainly due to there being no corrosion in the water jacket.
The first race car that had our new block fitted, on its first run out. Stopped the radiator from loosing half its water over 3 laps. And knocked 1 1/2 seconds of the cars best ever lap time. Even though the car had an electrical problem, and revs were limited to 6000rpm.
The improvement to the car from the new block, was down to the engine running cooler. So the bores were not bulging from poor water circulation, and bad heat transfer. It was run with same piston type, wich is our slipper Pistons. These Pistons run at a lower friction rate.
Hope all this helps and makes sence. Tony.
Might be helpful to show differences in water flow in new over old parts.
[attachment=1431]
[attachment=1432]
[attachment=1433]
[attachment=1434]
The last two pictures show the importance of proofing an item.
We had to do 18 changes to the pattern, and the casting pattern and box had to be totally remade 3 times to make the casting work.
However the difference in new and old blocks was clear, mainly due to there being no corrosion in the water jacket.
The first race car that had our new block fitted, on its first run out. Stopped the radiator from loosing half its water over 3 laps. And knocked 1 1/2 seconds of the cars best ever lap time. Even though the car had an electrical problem, and revs were limited to 6000rpm.
The improvement to the car from the new block, was down to the engine running cooler. So the bores were not bulging from poor water circulation, and bad heat transfer. It was run with same piston type, wich is our slipper Pistons. These Pistons run at a lower friction rate.
Hope all this helps and makes sence. Tony.