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-   -   What's wrong with AFR's exhaust port? (https://www.offshoreonly.com/forums/general-q/323534-whats-wrong-afrs-exhaust-port.html)

MILD THUNDER 02-27-2015 05:51 PM


Originally Posted by SB (Post 4271719)
Smitty is a good example, because he had other heads before (Merlin's) and couldn't make anywhere near the power he was looking for, even turning up the boost. He got the AFR's and surpassed the power he was looking for even with boost he was more comfortable with.

BObL ran into this also. Too much boost for the power (some box stock basic Brodix) and more boost wasn't doing anything. I think BobL ended up going to a set of Ported Brodix's or etc and made his number with acceptable boost #'s.

Many more example's, but these where chosen because of being members here, to agree with MildT and many others. Adding more boost is not always the answer - ie: doesn't always make more power if the combo of parts is not there to support the added airflow.

Also can be a factor when you run out of blower, or camshaft as well. You get to the point of diminishing returns. Sometimes you simply have to make more power on "motor'', if you are compressor limited. Like trying to make 1000HP with a 177 blower on a 454. Not gonna happen. But it can happen with a big blower and alot of boost. today, builders are doing 2000HP with conventional heads and turbos and centrifugals.

SB 02-27-2015 06:48 PM

Definately not with schitty or just okay conventional heads.

MILD THUNDER 02-27-2015 07:10 PM


Originally Posted by SB (Post 4271756)
Definately not with schitty or just okay conventional heads.



I think Steve Morris does alot with the Brodix Head hunter heads, but heres a setup with the 355cc Dart conventionals. https://www.youtube.com/watch?v=tTZkIG3RExI#t=208

Rookie 02-27-2015 07:27 PM

Ah, Steve Morris. He was the machinist at the local Napa store in my home town. He did all the machine work on my first engine rebuild. 2.8L V6 GMC Jimmy engine. He sent me home with a machined block, a master rebuild kit, torque spec, clearance #'s and plasti-gauge. Told me what to do and how to read the plasti gauge. I asked what oil to run and he said straight 30w, nothing any thinner. 180,000 miles later I sold it $1500. Lol

MILD THUNDER 02-27-2015 08:02 PM


Originally Posted by Rookie (Post 4271774)
Ah, Steve Morris. He was the machinist at the local Napa store in my home town. He did all the machine work on my first engine rebuild. 2.8L V6 GMC Jimmy engine. He sent me home with a machined block, a master rebuild kit, torque spec, clearance #'s and plasti-gauge. Told me what to do and how to read the plasti gauge. I asked what oil to run and he said straight 30w, nothing any thinner. 180,000 miles later I sold it $1500. Lol

Nice! I always like watching his builds. Some cool stuff. Anyone have any extra butter? :popcorn:

Rookie 02-27-2015 08:07 PM

He also freshened up the heads. I believe he went to Dart a few months after that.

KAAMA 02-27-2015 09:06 PM

Where is Steve Morris located now?....still in the Muskegon area?

Rookie 02-27-2015 09:29 PM


Originally Posted by KAAMA (Post 4271811)
Where is Steve Morris located now?....still in the Muskegon area?

Yes Muskegon area.

I remember a few years back we were talking about achieving HP goals. I was asking him questions about superchargers, blowers and turbos. He said, "Superchargers to about 2000HP and Turbos after that. Turbos are for when you get serious about making power." Lol

http://www.stevemorrisengines.comSteve Morris Engines

Racing Car Parts Store
750 E Ellis Rd, Norton Shores, MI 49441

Black Baja 02-28-2015 05:08 AM

4 pages and still nothing wrong with the port? Here is a company that has 15 5axis CNC machines and someone makes a comment that the port leaves a lot left to be desired. I'm sorry guys I just don't buy it. With all the engineers and air flow specialists that work for the company don't you think that if a problem was discovered with the port a few changes would be made to the program and corrected immediately. I think what we have here is a few people that don't know what they are doing/ talking about making statements about a great product that they have no buisness commenting about. Any monkey with a dremel tool and a flow bench can get a port to flow more CFM but this doesn't equate to making horsepower.

brian41 02-28-2015 06:47 AM

I think I will stay out of these threads and just "like" the winners.


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