86scarabIII

Putting 177 blowers on 454's.

Do I need to run boost gauges? What are the pitfalls if I don't? A couple reasons I don't really want to run the gauges are I don't want to drill into the intake, I don't really have room in my dash, and bottom line I think its just gonna be a pain in the ass. BUT I don't really want to "cut corners" either if it is necessary.

Did boats that came with 525sc's have boost gauges?

Thanks,
Kris

James

Make a bracket and mount a 2" booste gauge on the engine, you really only need to look at it a few times for reference with first installed, then the next time you will need to look at it is when you have a problem

Scarab3DMC

pm sent.. but them in the dash.. sorry bro..

powercat

The 177 intakes should be predrilled and tapped. You have to ask yourself what's going to be more of a pain in the ass, installing boost gauges or rebuilding engines.

Griff

I would never run an SC'd engine without them. Mount them where they are visible from the helm while underway. They can give you indications of a small problem before it becomes a big one.

Raylar

In my opinion adding wide band 02 sensors would be a better and more important addtion. If you don't get the air fuel ratios right on a supercharged marine engine under boost, that engine is on a quck trip to the parts basket, the broken parts basket! Some guys think their going to make a WAGMAR (wildass guess made at random)on jetting or fuel delivery rates, go out make a few runs and come back and read plugs! GOOD LUCK with that plan!
Irrespective of boost, if you don't get those air/fuels right from the outset on you're gonna be hating life!! Only takes about 30 seconds or so under boost at Wide open throttle to smoke a forged piston and possibly grenade the entire engine!
Just food for thought.

Best Regards,
Ray @ Raylar

HotPursuit

Boost Gauge and you should run a Exhaust Gas Temp Gauge.. O2 sensors dont last long in a marine exhaust.The dont like water,even with dry exhaust. Pain now or a big $$$$$$ pain later.

ezstriper

yes, you need a gauge, no the intakes are not drilled, but there is a boss for the fitting....you will never know where you are without it...Rob

Panther

If you put in gauges, I'd go with a boost/vacuum gauge. It's good to know what's going on with the engine.

Also, when you're driving you can use the gauge to optimize your cruise speed/rpm vs. gasoline consumption!

1BIGJIM

iTrader: (1)

Ray, I love that. I plan to use "WAGMAR" in a Scrabble game next weekend on my grandson.

He might be calling you on it