6-port or 4-port for high-RPM?
Thread Starter
Joined: Nov 2001
Posts: 2,456
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From: Springfield, MO
6-port or 4-port for high-RPM?
So, I get to start from scratch. So, I wonder...
I know the 6-port has more timing on the endplates; but over-all, but the 4-port can be made pretty large, and would flow better.
The limits are; I want some good engine life out of it; so PP's and Bridgeports couldn't be used. Likely the most porting the engine will see is a large (for it's type) streetport.
In short, lacking a bridgeport or pp, which engine has the most potental as a high-RPM race engine? (As an IDA setup could be in the future)
Tell me what you think... ~Colby
I know the 6-port has more timing on the endplates; but over-all, but the 4-port can be made pretty large, and would flow better.
The limits are; I want some good engine life out of it; so PP's and Bridgeports couldn't be used. Likely the most porting the engine will see is a large (for it's type) streetport.
In short, lacking a bridgeport or pp, which engine has the most potental as a high-RPM race engine? (As an IDA setup could be in the future)
Tell me what you think... ~Colby
Last edited by Liquid Anarchy; Oct 18, 2003 at 12:00 AM.
Displacement > Boost
Joined: Oct 2002
Posts: 3,503
Likes: 0
From: Mississippi
High rpm race? Probably a big street port if you won't be bridging it. I doubt four port vs six port matters at this point . . both have their merits like you say. I, personally, would do a large streeted six port engine, but you already know that, because I already did it (medium sp at least). 
My cars louder than yours
Joined: Oct 2001
Posts: 1,969
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From: Augusta, GA
Im not sure that any types of racing would allow an engine to be modified as far as a four ported 6 port motor. But ill let you know that they haul some serious ***. The top end is INCREDIBLE, way much harder than stock ports (for those who dont know this is the same car that pulled 14.6 on stock ports, and the motor i put in pulls way harder than that one did).
mad scientist
Joined: Feb 2001
Posts: 2,665
Likes: 2
From: Savannah, GA
i would say 6 port. Since youre going IDA, theres not much point in keeping the 6 port a 6 port. Ive got a set of end plates with the ports and runners ported into one big port. I was going to build a turbo motor out with them, but plans changed, and I now have no use for the end plates. I would be more than happy to sell them.
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Thread Starter
Joined: Nov 2001
Posts: 2,456
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From: Springfield, MO
Just as much as I am. No insult, but how many engines have you built? Less than a dozen? How many were borderline race engines? Standalone? Bareblock? That's why I wanna get an opinion from a higher-up than you or I, who might have some experience in this.
mad scientist
Joined: Feb 2001
Posts: 2,665
Likes: 2
From: Savannah, GA
Originally posted by Liquid Anarchy
Just as much as I am. No insult, but how many engines have you built? Less than a dozen? How many were borderline race engines? Standalone? Bareblock? That's why I wanna get an opinion from a higher-up than you or I, who might have some experience in this.
Just as much as I am. No insult, but how many engines have you built? Less than a dozen? How many were borderline race engines? Standalone? Bareblock? That's why I wanna get an opinion from a higher-up than you or I, who might have some experience in this.
Thread Starter
Joined: Nov 2001
Posts: 2,456
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From: Springfield, MO
Didn't say you wern't part of the way there... just not THERE.
You're doing the same thing I am on a 6-port right? MS + Big Streetport? I might stick w/ 4-port just so we can compare the 2. No matter what, this engine will have more HP than my last.
You're doing the same thing I am on a 6-port right? MS + Big Streetport? I might stick w/ 4-port just so we can compare the 2. No matter what, this engine will have more HP than my last.
Thread Starter
Joined: Nov 2001
Posts: 2,456
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From: Springfield, MO
you have to be on my BL to IM me
I have you on it as AF21479
And as per the exhaust, nope. I'm just putting an exhaust cutout between the header and the fake-cat.
I have you on it as AF21479
And as per the exhaust, nope. I'm just putting an exhaust cutout between the header and the fake-cat.
Full Member
Joined: May 2003
Posts: 56
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From: australia, SA
i don't post much, but....
if u want the engine revving high, and safely, i would suggest a full balancing of rotors, and eccentric shaft, and go for either the 6 port, or a large streetport. and have it tuned perfectly.
if u want the engine revving high, and safely, i would suggest a full balancing of rotors, and eccentric shaft, and go for either the 6 port, or a large streetport. and have it tuned perfectly.
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