Looking for performance exhaust/headers..source?
 

Hello- My father is resurrecting an 86 Scarab 38 KV. Its been sitting about 13 years. Anyway, the boat has its twin 400 cyclones rebuilt and ready to go in. We do not want to use the old junk exhaust manifolds. Where is a good place to get some nice performance manifolds/headers for this boat? Any help is appreciated.

Re: Looking for performance exhaust/headers..source?
 

Hardin Marine, Eddie Marine, Lightning headers, CMI, Stainless Marine, several more, all make high quality marine exhaust systems. Many are advertisers here and offer OSO member discounts.

Re: Looking for performance exhaust/headers..source?
 

You may want to consider staying with a good manifold and riser system for your mild horsepower application. They'll give you the performance you need and something the tubular headers wont.......a five year warranty!

Both EMI and Stainless Marine are warrantied for five years. I imagine there are others too.

Good luck with your decision.

Re: Looking for performance exhaust/headers..source?
 

Yes, I'm sure we don't NEED real tubular headers, but we were looking for something better than stock, both in performance and aesthetics.

Re: Looking for performance exhaust/headers..source?
 

Then try Stellings. Trick is now a dealer:D

Re: Looking for performance exhaust/headers..source?
 

Just looked at the EMI website...Those systems are just what I was looking for. I'm thinking about the EMI-511 system. I emailed them to see if it would fit my boat.
Thanks

Re: Looking for performance exhaust/headers..source?
 

We can offer you a great deal on Unitops with very competitive pricing to manifolds.

CMI - The Leader in Marine Exhaust.

Re: Looking for performance exhaust/headers..source?
 

For more on EMI Thunders check HERE.

Re: Looking for performance exhaust/headers..source?
 

My boat is equipped with Stainless Marine's Hi-Torque manifolds and stainless risers. I prefer these over the EMI Thunder system mainly because there are no coolant passages in the manifold/riser mating surfaces.

Re: Looking for performance exhaust/headers..source?
 

If you go with the EMI Thunders spend the extra money and get the stainless risers and not the standard cast. They are less restrictive.

Re: Looking for performance exhaust/headers..source?
 

I agree.....you want an aftermarket exhaust system that has a ONE PIECE, ALL STAINLESS tailpipe system. It's kinda like having the tailpipe and riser all in one. You can get the manifold type exhaust systems such as the Stainless Marine, GIL, EMI Thunders, etc, with the one piece all stainless tailpipe/riser, but you may have to specify what you want just to make sure.

The aluminum made aftermarket manifold systems will be much lighter than those stock Merc heavy cast iron anchors you have now and they will sound much better, dress up your engine compartment a lot nicer---especially with all polished stainless tailpipes, but you definately DO NOT want a riser/tailpipe that is cast and/or has a bunch of 90* elbows---too restrictive and will kill HP/Torque for what you want---besides, they look like sh#t !!!

Re: Looking for performance exhaust/headers..source?
 

I'm definately looking at the units with the stainless pipes and not the riser style they offer. Those EMI Thunder systems with the longer pipes look like what I want and the price is not too bad. No silent choice on this boat! I'm not looking to spend a fortune for exhaust on ~425 hp motors either.

Re: Looking for performance exhaust/headers..source?
 

Our last two boats had emi thunder 4inch w/stainless riser on mild 454s, and now stainless marine 5in on procharged 555s. Would gladly recommend either system, the emi worked great, and the stainless marine were by far the best value out there for what we needed, and great customer service, very impressed with our custom side exit exhaust coming out perfect wihtout them ever seeing the boat!

Re: Looking for performance exhaust/headers..source?
 

With no silent choice, you probably want to go with the 16" tails......