Exhaust Manifolds...

[PS94]

So since i've owned my Sea Ray, there's been a crack in the starboard manifold...it's gotten worse over the years...water pouring into my bilge...I had it welded but no luck. I'm assuming there was a freeze involved with a previous owner, as the port side is a jobber.... So, Now, do I risk the Aluminum GLM kit, and lighten up the boat a bit, (I'm not against a little bit of finish work) or get the cast sierra off of iBoats and save a few $$$......Opinions?
95 4.3L 4bbl, 185LX

 

[Bondo]

Re: Exhaust Manifolds...

Ayuh,... I believe the Sierras are also GLMs...

If ya buy GLMs, check the machined surfaces for Flatness,...
I had to remachine the set I bought...

 

[tpenfield]

Re: Exhaust Manifolds...

Aluminum manifolds would be for fresh water . . .

'Barr' or 'Osco' would probably be better bets than the GLM.

I recently purchased a set of Barr manifolds/elbows for my 7.4L they were A-OK.

 

[PS94]

Re: Exhaust Manifolds...

She's a land-locked trailer boat, only sees fresh water...I'll google the other options....

Osco Works out to more than OEM.
Barr website is broken. :/

 

[tpenfield]

Re: Exhaust Manifolds...

Try iBoats and/or this site http://Www.ebasicpower.com

 

[wingless]

Re: Exhaust Manifolds...

The Mercruiser parts are also very well-made. I use those when I swap-out my exhaust components.

 

[PS94]

Re: Exhaust Manifolds...

Might be just buying mercruiser....by the time I buy one and pay exorbitant shipping...I could just get one from a dealer. I wanted aluminum though.

 

[G22inSC]

Re: Exhaust Manifolds...

Try iBoats and/or this site http://Www.ebasicpower.com

They seem to have part numbers beginning with GLM and BPI. I know everyone says to stay away from the GLM. There is conversion kit listed; however, it does not state which manifolds and risers are included in the kit. Is this "BPI" kit good to go?

http://bpi.ebasicpower.com/p/BPI58992/Manifold

 

[PS94]

Re: Exhaust Manifolds...

kit looks like steel....I really just need the one manifold, but I'm romanced by the weight savings of aluminum...I found a canadian distributor for GLM, e-mailed them to see what price I can get on the aluminum kit...if It's too pricey, I'll just get the one merc manifold, and use the $$ elsewhere..