Milwaukee Eight M8 bolt in cam install step by step w/ dyno
Milwaukee Eight M8 bolt in cam install step by step w/ dyno
In this thread we are going to outline what is involved in a cam swap in the Milwaukee Eight engine. This is a very straight forward procedure on this engine. We will covering the complete step by step install using a bolt in replacement cam using quick install adjustable pushrods, we will be re-using the stock lifters. We will also be testing before & after on the dyno. The bike is our 2017 Road Glide with 107" M8 air cooled engine.
Here is the motor ready for disassembly, we've removed the complete exhaust system, air cleaner, and cam cover.
Here is the motor ready for disassembly, we've removed the complete exhaust system, air cleaner, and cam cover.
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Popular Reply
Dec 6, 2016, 02:22 PM
Well, here are the dyno results for the Wood WM8-222 cams. It is VERY apparent the M8 4 valve head platform responds well to a non-emissions cam, most impressive for a cam swap. Also note this our first swing at this motor with a hacked together prototype pipe and other factors. This is going to get really good.
6th gear run
5th gear run
6th gear vs baseline
6th gear run
5th gear run
6th gear vs baseline
Here is the baseline dyno test. Stock M8 107" air cooled engine, SE air cleaner, pre-production Jackpot 2/1 exhaust, Dynojet Power Vision tune.
Note: this baseline was done over the weekend when we were testing exhaust systems, not all of the charts in this thread will be from same day testing.
Note: this baseline was done over the weekend when we were testing exhaust systems, not all of the charts in this thread will be from same day testing.
Last edited by fuelmoto; Dec 5, 2016 at 11:32 AM.
In this application we will not be re-using the factory pushrods, we are using Quick Install style adjustable pushrods.
Here we are cutting the factory pushrods with a bolt cutters and removing them. Do not use a cutoff wheel or grinder, use a bolt cutter which makes a clean cut and eliminates (or highly reduces) the chances of any particulates making their way into the motor.
Here we are cutting the factory pushrods with a bolt cutters and removing them. Do not use a cutoff wheel or grinder, use a bolt cutter which makes a clean cut and eliminates (or highly reduces) the chances of any particulates making their way into the motor.
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In this application we will not be re-using the factory pushrods, we are using Quick Install style adjustable pushrods.
Here we are cutting the factory pushrods with a bolt cutters and removing them. Do not use a cutoff wheel or grinder, use a bolt cutter which makes a clean cut and eliminates (or highly reduces) the chances of any particulates making their way into the motor.
Here we are cutting the factory pushrods with a bolt cutters and removing them. Do not use a cutoff wheel or grinder, use a bolt cutter which makes a clean cut and eliminates (or highly reduces) the chances of any particulates making their way into the motor.
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The exhaust pushrod is longer than a twin cam, in this install we are using the M8 SE adjustable pushrods which includes shorter tubes. We should however be able to adapt our FM twin cam pushrods for use with the M8 in the near future.
