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Old 02-24-2007, 04:22 PM   #16
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What ive found with taking out fro the Geo Dome is you get a few things happen

1 Lower geometric compression = Higher RPM and slichtly less torque

2 Cooler temps from the head

3 Greater turbulence in the cylinder which promotes responce and fuel economy

To what degree of improvements depends on the individual situation. I tried the Multi cut about 4 years ago with a P5 off road engine , I cut about 4 head buttons and each week i gauged their results by swapping out for each race meet. I did this with a standard and turbo button and found the greatest gains from a single notch in a turbo facing the exhaust.. BUT ! i tried a 3 notch in a standard head button.. 1 in the front above the front intake port and 2 on a 45 deg andgle towards the exhaust. I then cut back the head button .2 mm to reduce its standard ratio and took a .2 shim to bring it back.. ..

I was a mennace ! it sounded like a rotary engine lol It created a lot of torque and great top end .. But rear bearings and rods wore very quickly..

MM
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Old 04-18-2007, 07:49 AM   #17
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Quote:
Originally Posted by MassiveMods
i tried a 3 notch in a standard head button.. 1 in the front above the front intake port and 2 on a 45 deg angled towards the exhaust. I then cut back the head button .2 mm to reduce its standard ratio and took a .2 shim to bring it back.. ..

I was a menace ! it sounded like a rotary engine lol It created a lot of torque and great top end .. But rear bearings and rods wore very quickly..

MM
Bro u meant u shaved the button to .02mm and u added .02 shim ?. Did any timing problems arise with the notch facing the front intake?. What was the average fuel consumption b4 the bearings or conrod starts to show signs of wear?
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Old 01-27-2008, 11:09 AM   #18
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Originally Posted by MassiveMods View Post
What ive found with taking out fro the Geo Dome is you get a few things happen

1 Lower geometric compression = Higher RPM and slichtly less torque

2 Cooler temps from the head

3 Greater turbulence in the cylinder which promotes responce and fuel economy

To what degree of improvements depends on the individual situation. I tried the Multi cut about 4 years ago with a P5 off road engine , I cut about 4 head buttons and each week i gauged their results by swapping out for each race meet. I did this with a standard and turbo button and found the greatest gains from a single notch in a turbo facing the exhaust.. BUT ! i tried a 3 notch in a standard head button.. 1 in the front above the front intake port and 2 on a 45 deg andgle towards the exhaust. I then cut back the head button .2 mm to reduce its standard ratio and took a .2 shim to bring it back.. ..

I was a mennace ! it sounded like a rotary engine lol It created a lot of torque and great top end .. But rear bearings and rods wore very quickly..

MM
Indeed it does sound like a rotary engine. I've mastered the technic and have modded all my engines with the 3 grooves for standard plugs. Has that different sound and power is on demand
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Old 07-15-2008, 04:25 PM   #19
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Pics please !!!
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Old 07-15-2008, 04:45 PM   #20
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Pics please !!!


Directly from: http://www.somender-singh.com/
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