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N/a Street ported engine for the second time.

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Old 08-27-07, 09:40 PM
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Wish he had a running rx7

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Lightbulb N/a Street ported engine for the second time.

I wanted to know what you guys think about my whole engine rebuild.

A Basic S4 13B n/a with a Large street port
Have Polished rotors with 0.001 shaved off the sides
Pineapple racing 5th/6th port sleeve inserts
ported intake and throttle body with the TB Modification
460cc s4 injectors for primaries and S4 t2 injectors for secondaries
A 255 walbro fuel pump
Hopefully get a electric fan.
Getting rid of the power steering but since i'm in oklahoma I'm going to need the A/C
a 2.5 inch exhaust all the way back
With a K&N air intake
Spec Clutch
I'm thinking about getting rid of the omp but I dont want to premix all the time.
s5 transmission instead of the S4.
Electric 6 ports
Block of plates

I think that is all for right now that i can think off. Thanks and tell me what you think about it.
Old 08-27-07, 09:51 PM
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You don't need A/C! I've been good for 2+ years without it in OK.
Old 08-27-07, 10:13 PM
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Wish he had a running rx7

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Oh yeah i know what you mean austin but since I work out everyday outside I need it like really bad. By the way i'm friends with you on myspace.
Old 08-27-07, 10:19 PM
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I figured as much by your pic. I've done the emissions removal and I've been very happy. Why are you going to use the S5 tranny? Do you just have it handy or what?
Old 08-27-07, 10:30 PM
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Wish he had a running rx7

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Ummm it is nice and clean better looking then my s4 they are both in good condition.
Old 08-28-07, 09:22 AM
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Engine, Not Motor

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Clearly you've put a lot of effort into the engine....but the stock EFI system is holding you back. Go with a standalone, get 20HP...
Old 08-28-07, 12:04 PM
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DGRRX

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And a Walbro 255lph is WAY overkill for an NA. Better get a better regulator.
Old 08-28-07, 12:45 PM
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tom port.. AKA streetport

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id go with a FD fuel pump.
Old 08-28-07, 02:31 PM
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Engine, Not Motor

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Didn't even notice the Walbro...The Walbro is WAY too large for an NA. It's going to raise fuel pressure and thus cause the car to run very rich. This will cost you quite a bit of power and money in wasted fuel.

Put the NA pump back unless you know it is not adequate.
Old 08-28-07, 07:03 PM
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Exactly. From what I understand, it is pretty damn hard to max out the NA fuel pump, even with heavy mods. After that, a TII, or an FD pump should be fine. I'm only using an FD pump on my TII, and used the NA pump with the turbo for a year with no issues.
Old 08-28-07, 08:59 PM
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Wish he had a running rx7

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Ummm well ok.

No one else wants to add anything or say anything.

Last edited by Aaron Cake; 08-31-07 at 09:19 AM. Reason: Merge two posts
Old 08-29-07, 09:42 PM
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Good starting point. Do you still want the housings I have?
Old 08-29-07, 10:29 PM
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Wish he had a running rx7

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Ummmm If you give me about a month to get my money the housing will be last to buy
Old 08-29-07, 10:42 PM
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that really close to my setup, no timeslips or dyno runs yet, its not broke in
Old 08-30-07, 08:53 PM
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Wish he had a running rx7

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Oh ok that sounds good what do you have done to yours
Old 08-30-07, 09:26 PM
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Do you really think the TII secondaries are that necessary? Im running a large street port on stock NA 460cc's and am still rather rich. Granted I do not have a wideband, it smells like *** with no cats.
Old 08-30-07, 09:44 PM
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Wish he had a running rx7

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Well yeah it wont be bad I have a guy that has 31 years of rotarys and he said it will be fine.
Old 08-30-07, 11:45 PM
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I have run T2 secondaries on a ported n/a in the past. ran 13:1 afr up top. A little rich but the owner wanted to add more power later.
Old 08-31-07, 02:45 PM
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Wish he had a running rx7

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oh really ummm do you know what mods and what his quater mile time was
Old 08-31-07, 05:13 PM
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Why do you type like you have to think while you are typing?

Ohh, ummm, oookkk, doh, duh?

What kind of replies are you looking for?

Everything sounds good except for fuel management. We suggested against the Walbro because you will NEVER need that much fuel. Unless you want to go radical, you don't have much else to do.
Old 08-31-07, 05:16 PM
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Originally Posted by rotaryinspired
Good starting point. Do you still want the housings I have?
I do.
Old 08-31-07, 10:57 PM
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Wish he had a running rx7

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I just use them because that is how i talk. Plus i could use the walbro it wont affect my fuel accept for the fact that i would have to get a fuel pressure regulator. No one put that in there what so ever.
Old 09-01-07, 09:32 AM
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DGRRX

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Originally Posted by Aaron Cake
Didn't even notice the Walbro...The Walbro is WAY too large for an NA. It's going to raise fuel pressure and thus cause the car to run very rich. This will cost you quite a bit of power and money in wasted fuel.

Put the NA pump back unless you know it is not adequate.
I think that implies a fuel pressure regulator is required.
Old 09-01-07, 09:41 AM
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Wish he had a running rx7

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I was going off of this text.
Originally Posted by djmtsu
Why do you type like you have to think while you are typing?

Ohh, ummm, oookkk, doh, duh?

What kind of replies are you looking for?

Everything sounds good except for fuel management. We suggested against the Walbro because you will NEVER need that much fuel. Unless you want to go radical, you don't have much else to do.
Old 09-04-07, 10:48 PM
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Wish he had a running rx7

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So really that is it I'll post pictures of the build later ok.


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