Aluminum cylinder head question AFR enforcer 335
04-08-2023, 09:48 AM
#41
Registered
iTrader: (1)
Articfriends - the canfields still have the raised exh port. Like .600” or so ?
The following users liked this post:
articfriends (04-08-2023)
04-08-2023, 10:09 AM
#42
Registered
To your question on the port height....my heads have raised ports and I had to raise my tips the same height as the port raise...I believe mine were 1/2 or 3/4 inch raised I can't remember but I will say I had to do it due to my exhaust configuration. My tails curve in towards the center of the boat and I wasn't able to get them to line up with the flex in the couplings. Also when you go up they generally move the headers out as well at least mine did because the angle of the exhaust flange is not parallel to the vertical plane of the engine....hope that makes sense lol.
My opinion...not sure what lake you run on but I do know of at least 3 people personally here on lake michigan that only got 3-4 years out of aluminum heads in lake michigan water only. It's not only slat water that is corrosive. If you're building this to not have to be worked on and inspected constantly I would go with a good set of iron heads....dart iron eagles or something...I went iron on mine and had them ported and they flow as good or better than AFR aluminums and I don't have to worry about corrosion. I have engine quest heads which I can't seem to find anymore but there are threads about them on here by "mild thunder" if you search enginequest heads. That's just my opinion and you can easily get to your horsepower goal with iron heads...can probably get a good set of stock merc 500 or 525 efi iron heads and get to your power goal easily and never had to worry about them.
My opinion...not sure what lake you run on but I do know of at least 3 people personally here on lake michigan that only got 3-4 years out of aluminum heads in lake michigan water only. It's not only slat water that is corrosive. If you're building this to not have to be worked on and inspected constantly I would go with a good set of iron heads....dart iron eagles or something...I went iron on mine and had them ported and they flow as good or better than AFR aluminums and I don't have to worry about corrosion. I have engine quest heads which I can't seem to find anymore but there are threads about them on here by "mild thunder" if you search enginequest heads. That's just my opinion and you can easily get to your horsepower goal with iron heads...can probably get a good set of stock merc 500 or 525 efi iron heads and get to your power goal easily and never had to worry about them.
04-08-2023, 10:22 AM
#43
Registered
iTrader: (1)
Tstat housings are designed to circulate a big % of water that came out of engine back to the recirc pump back into engine. Excess goes to exhaust. When tstat opens most water that exits engine goes to exhaust vs being recirculated.
The tstat does not sit against/in tstat recess of intake manifold which would block off water leaving engine while cold.
The 4 port t stat housing foes best job of this.
The tstat does not sit against/in tstat recess of intake manifold which would block off water leaving engine while cold.
The 4 port t stat housing foes best job of this.
The following users liked this post:
articfriends (04-08-2023)
04-08-2023, 12:42 PM
#46
Platinum Member
Platinum Member
iTrader: (1)
now that AFR has raised price of finished heads to almost 5000$ i can see a shift to brodix , canfield and even the chinese promax castings.
Last edited by articfriends; 04-08-2023 at 12:49 PM.
The following users liked this post:
SB (04-08-2023)
04-08-2023, 12:56 PM
#47
Registered
iTrader: (1)
Good info Rob. :thumbs
Don’t see much marine peeps comment on Profiler heads. Anyone use any ?
https://www.profilerperformance.com/...nal-port-heads
Don’t see much marine peeps comment on Profiler heads. Anyone use any ?
https://www.profilerperformance.com/...nal-port-heads
Last edited by SB; 04-08-2023 at 01:01 PM.
04-08-2023, 01:00 PM
#48
Platinum Member
Platinum Member
iTrader: (1)
Good info Rob. :thumbs
Don’t see much marine perps comment on Profiler heads. Anyone use any ?
https://www.profilerperformance.com/...nal-port-heads
Don’t see much marine perps comment on Profiler heads. Anyone use any ?
https://www.profilerperformance.com/...nal-port-heads
The following users liked this post:
SB (04-08-2023)
04-10-2023, 11:50 AM
#49
Registered
Thread Starter
He is doing a valve job on my stock iron heads, he showed them to me and they have little to no corrosion on them after he cleaned them up. Im done caring about the added performance I just want my boat back. I told him to load them with the best parts we can and put them on my engine. If it makes 530-550Hp im more than happy.
The following 3 users liked this post by Joeyboost:
VIP Member
The following 4 users liked this post by Bad to the bone:
