What is the best flowing USCG air cleaner available?

[Hondo Jet]

What is the best flowing USCG air cleaner available for someone on a budget?

This is what I'm working with now, original equipment on a 420 Mercruiser...

[sonicss31]

It might run better if the coil wire was on. Just kidding, bustin your chops.

[blackhawk]

That looks like similar the Barbron(sp?) I have on mine and it flows well. I did back-to-back runs with and without the flame arrestor and saw no difference in speed.

[Hondo Jet]

It might run better if the coil wire was on. Just kidding, bustin your chops.

I told you I was on a budget. I should have enough saved for a coil wire in another month or so.

[Hondo Jet]

That looks like similar the Barbron(sp?) I have on mine and it flows well. I did back-to-back runs with and without the flame arrestor and saw no difference in speed.

You answered the question I should have originally asked; how good is the flame arrestor that I already have. Thanks!

[MOBILEMERCMAN]

If you want to wake it up put some exhaust on it. That looks like stock 4". It was original on 370's. 420's came with a bigger exhaust. That is the most notable restriction in your package.

[Hondo Jet]

If you want to wake it up put some exhaust on it. That looks like stock 4". It was original on 370's. 420's came with a bigger exhaust. That is the most notable restriction in your package.

Sounds like a plan. If anyone has a set of good exhausts and a coil wire they want to part with send me a PM. Thanks!

[old377guy]

I'll send the coil wire

[MILD THUNDER]

If you want to wake it up put some exhaust on it. That looks like stock 4". It was original on 370's. 420's came with a bigger exhaust. That is the most notable restriction in your package.

What he said. The 420's should have came with GIL manifolds. Those heavy cast iron stock merc ones you have do nothing for Horsepower. They use a common plenum, so the exhaust basically dumps into a big open chamber. Gil, stainless marine, and of course headers, have individual runners for each cylinder.

As for the Flame arrestor, what you have is fine for your engine. Just keep it clean. I clean mine with brake clean which works good. Of course take it off first before spraying it.

[PatriYacht]

I see your engine has a Wieand X-celerator intake on it. That's original equipment. If it has Crane gold rockers it's definately a 420. Someone changed the exhaust from the original.

[Hondo Jet]

I see your engine has a Wieand X-celerator intake on it. That's original equipment. If it has Crane gold rockers it's definately a 420. Someone changed the exhaust from the original.

Affirmative on the Crane gold roller rockers.

Anyone have the exhaust I need sitting in the corner of their garage/workshop collecting dust?