140 crossflow

[keefallan]

I am in complete agreement about the aluminum. Its gonna have a corrosion party in there!! I am gonna use my upper aluminum mount, but I am gonna powdercoat it b4 installation. The lowers.......hmmmm.....may have to look into the delrin. I have heard the aluminum lowers transmits alot of vibration to the hull. So, I dont want that anyways.

Does delrin come in block form? I know of sheets and round tubes.

[Gordon02]

I've had solid motor mounts for more than 20 years now on my Allison/Merc SS combo. The vibration is not an issue that most would ever detect or recognize. There is a slight resonance in the growl the engine makes at low to mid rpm, but seriously most would never notice it. I'm building my current 2.0L with Bob's solid mounts and do not consider them a negative. Gordon

[LakeFever]

I have solids in my 2.5L because I had them and its easy and well thats that. On this 140 I dont think its super critical for solids I'll either drill and pin or fab up some plastic ones as mentioned all very good suggestions. I have a spare mid and mounts for this thing if something goes wrong lol

[delawarerick]

What are you running the v4 on? I have some props for v4 my project is a 2 cylinder evinrude chasing 50mph.

[LakeFever]

Well I bought the V4 for a Vandal, but now its going on a Viper. I'd like to see 6200 RPM 70+ mph. I have a 24p Raker to start with. Probably end up with a box full by the time im done playing with it haha

[keefallan]

Thats half the fun right..........as long as your wallet can afford all the props

[delawarerick]

I have the prop to achieve 70 I have a 27 mazco cleaver I never got to try it on the laser I ran a 23 srx on the rally sport (sidewinder) I ran a raker with decent results. V4 props are not easy find and the nitro case prop are like hens teeth.

[LakeFever]

I’d like to try a cleaver Ive read they work well on vipers

[perfmarine1]

If you have a lathe, or access to one. You can buy a short piece of Delrin plastic and whittle up a set of your own. I like it better than aluminum mounts. Aluminum will get water in between the mount , it's register and hold down cap .. and start to corrode. Somethings got to give and it wont be the solid mount ..

You can not cut OMC motor mounts with a lathe, if you can I would love to see that Chaz!