Install a vac. pump. You will be bolting on 35-40 Horsepower and keep the engine sealed! I run them all the time on pleasure boat applications.

mrhp1, what make pump and do you have a pic or 2 to show how you did it. thanks chuck

Yeah, MrHP1, perhaps you cna show us which part goes where? I've attached a spec for reference...

Yes, that is an interesting idea. A few pictures would be great. Although I dont know how or where I can mount the pump, especially with the serp belt that I run.

Yes, they are threaded. From information on Hardin Marines site, it seems that they are threaded to -20 an. I am thinking about getting 2 oil fill plugs from Hardin, then just drilling and tapping whatever size pipe thread I need into the plug. Summit has Moroso puke tanks that may work well.


Dick,
Yeah, I will keep you posted. Did you get the barn plowed out and the engine out today?

I run a vacuum pump and it is great for oil blow-by control. I don't agreed with the 30+ hp in a wet sump marine application. My dyno experience with standard tension oil rings @ 15" of vacuum is less than 10 HP. Any more vacuum than 15" caused my oil pressure to fluctuate on the dyno...VP fighting the oil pump.
For absolute blow by control on a wet sump system, all you need is any negative pressure. To rig this VP system right, figure on a $1500+ project.
You can use one VP on twin BB....works great.

Why not just run some hoses to the flame arrester??

Having the same problem with my 454's wet sump system.I have the old school alum valve covers with the ribs on top and push in breathers. 1 on each side. After a day running I will have oil in the ribs of covers. I thought that if I plumbed this to the air cleaner it would foul my carb. Am I right ? Plus really liked the clean look of nothing going flame arrester. I can't see spending 1500 to keep me from wiping alittle oil but interested in any other ideas.

a complete vcumm pump kit can be had for 750 bucks v belt im going to run this comming season on my 598 it looks pretty clear on the set up .

Yeah, that seems to work, but I dont like the fact that it pumps more hot air and possibly a bit of oil to the intake. Theres enough horsepower robbing hot air in there, dont want to pump any more into it.