Sent 05 Ex to RF Powerboats
#711
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Joined: Jan 2008
Posts: 2,357
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From: San Diego
One more for now. THis is a pic of the crank snout showing the double keys. Instead of the stock single 3/16" key, we now have (2)-1/4" keys. It should have been done like this in the beginning since it's driving a supercharger.
I will post more later of the heads, etc
Eddie
I will post more later of the heads, etc
Eddie
#713
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
We make them. I haven't seen a commercially available one so we just made our own. GM has a plastic one but.....it's plastic.
It's not really a distributor. It takes it's place and works as a cam sensor and distributor drive. THe cam position sensor is used for the distributorless ignition.Eddie
#714
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Joined: Jun 2009
Posts: 339
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From: League City, Tx
Nice . . . I don't mean to be asking too many questions, but . . . . What PCM are you using and what tuner software do you use?
How are you or what do you use to simulate the loads on the engine as if it's in the real world running conditions vs on an engine dyno or if it's already mounted in the boat?
How are you or what do you use to simulate the loads on the engine as if it's in the real world running conditions vs on an engine dyno or if it's already mounted in the boat?
#715
#716
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
#717
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
Nice . . . I don't mean to be asking too many questions, but . . . . What PCM are you using and what tuner software do you use?
How are you or what do you use to simulate the loads on the engine as if it's in the real world running conditions vs on an engine dyno or if it's already mounted in the boat?
How are you or what do you use to simulate the loads on the engine as if it's in the real world running conditions vs on an engine dyno or if it's already mounted in the boat?
I find it much better to tune the engine on the dyno. We can put it through every possible scenerio and load imaginable. I'll start at 2000 rpm with no load. We will maintain 2000 rpm as the load increases until we are at wot at 2000 rpm. That allows us to sweep all the way through the entire throttle range and check the tune. We will then go up about 200-300 rpm and do it again. We'll do that through the entire rpm range of the engine. That is something you can't do in the boat. Usually the only thing that changes from dyno to boat is idle,in and out of gear and throttle tip in. Those items are easily tweaked in the boat.
When tuning in the boat, you can only tune where the boat can load the engine. You can't sweep like we do. That load can change day to day based on the amount of people, fuel, gear, etc. You could tune it one day under one condition and then it be off on another day under different conditions.
Hope that helps explain it a little.
Eddie
#718
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
A few more. This is a before and after of the timing cover. The timing cover now has the ribs milled out to clear the double roller timing chain. You can also see where the timing gear bolts were to large and hitting the cover.
The other is the 58x trigger wheel. We make these as well.
Eddie
The other is the 58x trigger wheel. We make these as well.
Eddie
#719
A few more. This is a before and after of the timing cover. The timing cover now has the ribs milled out to clear the double roller timing chain. You can also see where the timing gear bolts were to large and hitting the cover.
The other is the 58x trigger wheel. We make these as well.
Eddie
The other is the 58x trigger wheel. We make these as well.
Eddie
#720
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
Hey Eric, as we were going through all of the old nuts and bolts, we found the old motor mount hardware.
Wasn't sure if you wanted me to replace them with something a little more permanent?
Sorry, couldn't resist.

Wasn't sure if you wanted me to replace them with something a little more permanent?
Sorry, couldn't resist.


