Gerolamy Dual Flow Daytona Twin Tech Package

18 Апр 2015 | Author: | Комментарии к записи Gerolamy Dual Flow Daytona Twin Tech Package отключены
Bike Big Bear Choppers Rage 100

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I wanted to increase the performance on my Harley Electra Glide, so when I was running on the highway, I had the to pass other vehicles Also I needed the ability to run 120 MPH I wanted, for as long as I wanted. I wanted to keep it dependable.

Was I too much?

Berry, the master, cylinders.

The way to accomplish it was to upgrade to 95 Inches and dial in the power some other engine I contacted Berry Wardlaw, of Engineering, in Dothan, Alabama and if I could use his shop to handle the The shop is known for the performance building.

They build and have everything I needed in Berry and I are friends and have on other projects together. So the was, yes .

There have numerous articles on how to build a 95- engine including basically, the cylinder to accept the new larger I will skip over of that except for the actual of the cylinder which is critical. installing torque plates the are bored by removing .015 a Berry does this to harmonics, reduce heat and give a better read to the

The last pass is done a fine cutting tool they are within. 003 of the piston After the final cut a chamfer is cut in the of the bore to make installing and rings a smooth operation.

Top end Note compression releases, a to take the heat off starter

The cylinders are cleaned and moved to the machine where using a 280 stone they are brought to final clearance. The cross is finely cut at 60 degrees.

The pistons and were installed on the rods and the installed.

While Berry was the cylinders, I installed the cams. I a set of Andrews 60Gs as they give me the power where I it. I replaced the roller bearings ball bearings and used SS gears.

The cases were for bigger cams and the inner cam were changed for strength and

The heads had been ported and by B.C Gerolamy. A set of 1.900 intake and exhaust valves were with a blended valve A double spring kit with seals rounded out the package. A set of Black Road Rage was mocked up to determine where to the weld nut and the WEGO (Wide-band Gas Oxygen Sensor) more known as the 02 Sensor or Exhaust

It is important that it can be installed and easily and does not come in with other parts. The were marked, removed and a cut in each pipe. The weld nut was and welded into place.

It be noted that a weld nut was in both pipes.

It is VERY to run an 18×1.5 mm tap through the weld nut welding. Failure to do so could damage to the 02 sensor threads.

A was installed in the front pipe anti-seize on its threads. The welded was touched-up with heat paint and both pipes on the engine.

Gerolamy performance body.

To get the most performance out of the engine, we the Gerolamy Daytona Twin Tec to supply and meter fuel as it had all the in one easy to install kit and included the tuned port dual which would allow us to use all the Harley fuel injection and control each cylinders flow precisely. It would increase flow and port

The other part of the kit is the Daytona Tec Engine Control module It replaced the original equipment on Harley- Davidson fuel Twin Cam 88 engines. It Is Not Intended For Engines.

It is a alpha-N (throttle and RPM based) fuel control to that used on automobile systems. It includes a 02 sensor for tuning during actual conditions. It is fully programmable and the ignition system including curves, Air- Fuel idle air control. Idle RPM and start settings.

These made my fuel injection or a closed loop system.

is very simple and covered in with the enclosed instruction. I you FOLLOW THEM EXACTLY.

worked hard, take a

Now here is the cool part. I the supplied software on my laptop and hooked it up to my motorcycle and used it to my throttle stop and throttle sensor. This is very and if not dialed in correctly all the other will be off.

I loaded set-up program into the

The engine fired right up and we for leaks and gave the motorcycle a look over. Everything was so I went for a 15 minute ride and I got back we downloaded the stored into the laptop.

There are area that can be edited and are the ignition advance, AFR (air/fuel Alpha-N (throttle position and RPM fuel table), Front trim (percentage of fuel for the front cylinder) and the BLM (block multiplier). Each table of 20 columns from 0 to 7,500 RPM and contained 11 throttle position from 0 to 100%

Bike Big Bear Choppers Rage 100

The 02 sensor is I needed to take care not to tighten it.

The air fuel ratio was the place we were going to adjustments as every thing was where we wanted it. The typical ratios is 13.0:1 for idle, for cruising and 12.8:1 for WOT (wide throttle) To prevent engine avoid lean air-fuel exceeding 14.5-1 under conditions

Using information from the O2 the BLM (block learn multiplier) was adjustments to the motorcycle as we rode it. No and expensive dyno runs Just ride the motorcycle you normally do. Computer shot

The BLM are limited to 75% to 125% with being optimum. When the nears one of the limits it saves information and downloads it to the laptop a color graph. If it shows red the N fuel table is changed and back to 100%.

As I continued the motorcycle continued to adjust if fit the range.

After all the settings in range the O2 sensor was switched to the pipe and some minor were made to the front After all it does run at a slightly temperature than the rear

The O2 sensor was returned to the rear and adjusted my air–fuel mixture as I around the country. From sea to the mountains I will always be in

I rode the bike to Sturgis Berry and it did everything it was suppose to and I still had more throttle long 120 MPH runs.


The tuning are unlimited and I see O2 Sensor as the tuning of the future. Damn they been using it in cars

Tuning my motorcycle with a Will wonders ever




Accurate Engineering

Bike Big Bear Choppers Rage 100
Bike Big Bear Choppers Rage 100


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