Stainless Risers

[sswheeler]

I was wondering how hard it would be to build a set of stainless exhaust risers. Has anyone done this? I want them to bolt to the stock mercusier manifolds. Are they double wall? I'm not doing this for performance' mainly wanting to dress up the engine.
Any ideas? Thanks

 

[Bondo]

Re: Stainless Risers

I was wondering how hard it would be to build a set of stainless exhaust risers. Has anyone done this? I want them to bolt to the stock mercusier manifolds. Are they double wall? I'm not doing this for performance' mainly wanting to dress up the engine.
Any ideas? Thanks

Ayuh,... Why not just Buy 'em,..??

 

[sswheeler]

Re: Stainless Risers

Ayuh,... Why not just Buy 'em,..??

Well, I could but I could possibly build them a lot cheaper than $750. If I had a pattern or specs.

 

[Tahorover]

Re: Stainless Risers

So you have a TIG welder?

 

[sswheeler]

Re: Stainless Risers

So you have a TIG welder?

Yes, I've been welding for a living for almost 20 years

 

[Pete104]

Re: Stainless Risers

And now you want to be plumber!

 

[Tahorover]

Re: Stainless Risers

Yes, I've been welding for a living for almost 20 years

So you should have no problems with such an easy project. A simple plate with a jacketed tube with an water inlet tube.

 

[Bondo]

Re: Stainless Risers

Ayuh,... I bought a perfectly great used set for 'bout a C-note...

 

[joncrisler]

Re: Stainless Risers

Mercruiser actually made stainless risers (elbows) for a few years for 4 inch exhaust. I just put a set on my Gen VI 454. They include extra water inlets for the older style water supply to the elbow, which needs to be blocked off if run on a newer style cooling system. Easy enough to do with the right hoses and fittings. PM me and I can put you in touch with a guy that has a pair, but expect to pay about $200 for the pair.

 

[sswheeler]

Re: Stainless Risers

Ayuh,... I bought a perfectly great used set for 'bout a C-note...

I would jump all over that! i've looked but hav'nt found anything used yet

 

[scutly]

Re: Stainless Risers

Mercruiser actually made stainless risers (elbows) for a few years for 4 inch exhaust. I just put a set on my Gen VI 454. They include extra water inlets for the older style water supply to the elbow, which needs to be blocked off if run on a newer style cooling system. Easy enough to do with the right hoses and fittings. PM me and I can put you in touch with a guy that has a pair, but expect to pay about $200 for the pair.

i have them on my boat. i had no idea they where stainless until i went to replace them for my new engine. they are painted black and visually look more like the 3" risers so that's what i ordered. of course when i took them off and they looked gorgeous inside and i realized what they where i returned the wrong ones pronto. the pair in this pic are on Ebay

 

[joncrisler]

Re: Stainless Risers

Those have obviously been painted, but in looking at the exhaust end the color of the metal looks identical to all of the stainless versions I have seen. You are correct- the stainless castings are thinner than the cast iron versions, the external dimensions seem a bit smaller and they are significantly lighter. The advantages are they are lighter, smaller and last pretty much forever. I dont think there is any performance difference. The extra water inlet has to be dealt with on a newer-gen engine with revised cooling: blocking them off is fine, or run a 1 inch ID hose between them, but the block off would be cleaner-looking, and I dont know if I want a cooling hose running over the top of my engine.