Here is a link to Larry Widmer's Endyn site. Larry if controversial but does outstanding work and documents the hows and whys. He specializes in Honda's but think of this as half our V8s. He addresses so many things that you just need to start reading and looking at the pictures as you begin to digest just some of what he is telling us for FREE.
http://www.theoldone.com/articles/Larryscivic/Larrys_Civic.htm
Here is just ONE of the hundreds if not thousands of points of detail. He polishes the valve springs where they meet the keepers. This reduces friction and therefore heat and fatigue.
![ValveSprings.jpg ValveSprings.jpg](https://www.lextreme.com/forums/data/attachments/14/14943-db7bd70060ffcabd24ad9b693dcb4462.jpg?hash=23vXAGD_yr)
Here he shows the exhaust ports after EXTENSIVE work including welding to change the shape and then CNC porting. Even so he offers the picture to show there are still areas that he does NOT touch!!! Hogging out a port is NOT the way to make the best port. Understanding the goal and understanding the port is critical.
![GSR_PinchHead_Exh_Flange11.jpg GSR_PinchHead_Exh_Flange11.jpg](https://www.lextreme.com/forums/data/attachments/14/14944-6b4488d4f637573e990bc6ea0f6b9f5b.jpg?hash=a0SI1PY3Vz)
Engine in the Endyn dyno room. Notice the attention to detail everywhere. Notice the intake air is actually from a controlled sealed chamber that measures the density/pressure, temperature and humidity of the air before it gets to the engine. All important to know when developing and comparing data.
![Break-In1.jpg Break-In1.jpg](https://www.lextreme.com/forums/data/attachments/14/14945-dbacea5c0ce25f9fbf86279ed3c4e9e6.jpg?hash=26zqXAziX5)
http://www.theoldone.com/articles/Larryscivic/Larrys_Civic.htm
Here is just ONE of the hundreds if not thousands of points of detail. He polishes the valve springs where they meet the keepers. This reduces friction and therefore heat and fatigue.
![ValveSprings.jpg ValveSprings.jpg](https://www.lextreme.com/forums/data/attachments/14/14943-db7bd70060ffcabd24ad9b693dcb4462.jpg?hash=23vXAGD_yr)
Here he shows the exhaust ports after EXTENSIVE work including welding to change the shape and then CNC porting. Even so he offers the picture to show there are still areas that he does NOT touch!!! Hogging out a port is NOT the way to make the best port. Understanding the goal and understanding the port is critical.
![GSR_PinchHead_Exh_Flange11.jpg GSR_PinchHead_Exh_Flange11.jpg](https://www.lextreme.com/forums/data/attachments/14/14944-6b4488d4f637573e990bc6ea0f6b9f5b.jpg?hash=a0SI1PY3Vz)
Engine in the Endyn dyno room. Notice the attention to detail everywhere. Notice the intake air is actually from a controlled sealed chamber that measures the density/pressure, temperature and humidity of the air before it gets to the engine. All important to know when developing and comparing data.
![Break-In1.jpg Break-In1.jpg](https://www.lextreme.com/forums/data/attachments/14/14945-dbacea5c0ce25f9fbf86279ed3c4e9e6.jpg?hash=26zqXAziX5)