Runner size for a Bridge ported RE with a GT4202R
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Runner size for a Bridge ported RE with a GT4202R
I'm want to fab up a intake mani when my car is done. It's going to be a bridgeported(decent sized bridge) with a GT4202R. I was wondering what you think would be the best sized runners (OD) to go with. This is the size of the plenum I plan on going with.
I'm looking for more mid/top end, but I really don't want to kill all my low end.
Any suggestions?
I'm looking for more mid/top end, but I really don't want to kill all my low end.
Any suggestions?
#4
I'm want to fab up a intake mani when my car is done. It's going to be a bridgeported(decent sized bridge) with a GT4202R. I was wondering what you think would be the best sized runners (OD) to go with. This is the size of the plenum I plan on going with.
I'm looking for more mid/top end, but I really don't want to kill all my low end.
Any suggestions?
I'm looking for more mid/top end, but I really don't want to kill all my low end.
Any suggestions?
The Ross D-plenum along with their velocity stacks and billet runners are very nice stuff.
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#12
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The exhaust ports are being ported. The motor is getting a decent sized bridge. I'm not going to be cutting into the water jacket, but I will probably be notching the rotor housings.
I'm not worried about losing bottom end, i'm going with a large turbo and bridge, bottom end is the last thing I'm worried about lol.
Do you think 2" would be good? I don't want to go too big, and I don't want to go too small.
I'm not worried about losing bottom end, i'm going with a large turbo and bridge, bottom end is the last thing I'm worried about lol.
Do you think 2" would be good? I don't want to go too big, and I don't want to go too small.
#13
The exhaust ports are being ported. The motor is getting a decent sized bridge. I'm not going to be cutting into the water jacket, but I will probably be notching the rotor housings.
I'm not worried about losing bottom end, i'm going with a large turbo and bridge, bottom end is the last thing I'm worried about lol.
Do you think 2" would be good? I don't want to go too big, and I don't want to go too small.
I'm not worried about losing bottom end, i'm going with a large turbo and bridge, bottom end is the last thing I'm worried about lol.
Do you think 2" would be good? I don't want to go too big, and I don't want to go too small.
Let's start with which motor?
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I have had two types of bridgeports. When you "don't" port the exhaust, you get faster spool and a broader power curve. I don't care if you believe me. Im not speaking on what somebody else told me. I speaking of personal experience Ray and I have had with bridgeporting.
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I don't want to put words in his mouth and say he agreed with me but we did discuss him making me a custom size for a higher cost. Unless your really porting the hell out of your LIM you're going to have to bottle neck the top of the LIM to match. Lets keep it peaceful I'm just sharing my experience I'm not here to compete or fight.
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I did more than just talking and thinking. I actually built one. https://www.rx7club.com/single-turbo-rx-7s-23/my-custom-upper-intake-manifold-%2A-pictures%2A-771544/
But I appreciate your post
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That's exactly what I'm trying to avoid, using something that is too big and will create turbulence, or something too small that will create a restriction.
What are you ideas on tapering? Like start off at port size, taper as it comes up, then increase to port size again a little bit before it goes to the plenum.
What are you ideas on tapering? Like start off at port size, taper as it comes up, then increase to port size again a little bit before it goes to the plenum.
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