1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Now i know what BRAP BRAP sounds like

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Old 05-03-05 | 02:24 AM
  #1  
trochoid's Avatar
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From: St Joe MO
Talking Now i know what BRAP BRAP sounds like It's alive!!!!

Finally got the 1/2 bp-1/2sp 12a fired up tonite. This is my first rebuild and I am, how should i say this, walking around with an extra shifter in my pants.

Hope you enjoy the vid and the sound as much as I do. As they say on Speed Channel, turn up the sound of speed.

http://suicidalgaming.net/kiwi/****/walkaround.MOV

Last edited by trochoid; 05-03-05 at 02:34 AM.
Old 05-03-05 | 02:43 AM
  #2  
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From: Tulsa, Ok.
good reason to have a "Mega Stiffy" there.
Old 05-03-05 | 03:11 AM
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From: Longmont Co.
****** Sweet!!!!
Old 05-03-05 | 03:20 AM
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From: San Jose, CA
Damn that's awesome!
Old 05-03-05 | 04:13 AM
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From: Brisbane, Queensland, Australia.
Like music to my ears...
Old 05-03-05 | 07:41 AM
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From: yokosuka japan
Been a while since I heard that wonderful sound



Used to be nothing better to install terror into a nissan or toyota owners heart than that sound.




kenn
Old 05-03-05 | 08:54 AM
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Turbo widebody FB
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Im dying to know how streetable this car is going to be for you. The sound is crazy, I just can imagine that getting really annoying during a in town drive...
Old 05-03-05 | 09:19 AM
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standard combustion
 
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From: Twin Cities Minnesota
I used to run a 12a full bridgeport on the street. That is before the turbo setup ofcourse. I think the power is ok with a light flywheel to spin it up quick from the useless powerband range of idle-4000rpm. I think it works ~ok in the country, but not good in city usage. I didn't like it in the noise or fact that the engine was spun so fast, you really should upgrade to all the things necessary for sustained high rpm if you decide to do road course racing. I am much more content with boost and streetport. I actually did use a turbo on the bridgeport, but carbon seals didn't last long.
Old 05-03-05 | 09:45 AM
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My job is to blow **** up
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hey i am at work and really want to see that video, got a way to make it were i can stream it, i cant download at work, thanks, BRAP on
Old 05-03-05 | 10:44 AM
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what exactly causes it to idle like that? the bridgeport? what is that?
Old 05-03-05 | 11:42 AM
  #11  
WackyRotary's Avatar
standard combustion
 
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From: Twin Cities Minnesota
Overlap!!!
Old 05-03-05 | 03:51 PM
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Lapping = Fapping
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Sounds good. That sounds like my mild streetported REPU when the choke is on.
Old 05-03-05 | 04:03 PM
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that is awesome... i am so ripping my engine apart when i move to the house
Old 05-03-05 | 04:06 PM
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boost my 7

 
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From: Colfax, Washington
OMG....im so stoked to get my 1/2BP 12a into my car this weekend!!! It is also my first rebuild/porting experience. I hope all goes well!!!
Old 05-03-05 | 04:48 PM
  #15  
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From: Charleston, SC (chucktown!)
dam.....1/2 bridge 1/2street???? did you street intake bridge exughst???

wish i had the ***** to rip my motor out and rebuild it maybe once it blows so then i wont make it any worse since it already dosnt run
Old 05-03-05 | 05:46 PM
  #16  
REVHED's Avatar
Hunting Skylines
 
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From: Brisbane, Queensland, Australia.
Originally Posted by Rusty Shackleford
dam.....1/2 bridge 1/2street???? did you street intake bridge exughst???
How the heck would you bridge-port the exhaust?

It means street-ported primaries bridge-ported secondaries.
Old 05-03-05 | 09:14 PM
  #17  
1984special's Avatar
So little time and money
 
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From: NorCAL
he could if it was a renesis!

wow that sounds great. nice!
Old 05-04-05 | 05:31 AM
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From: St Joe MO
Thanks for all of the compliments. The primaries are a good sized street port, the secondaries are bridged and the exhaust is ported pretty well too. In the vid it was idling at 1k, but it will idle at 800rpm, which I didn't think was possible.

At idle the whole car just sits there and rocks back and forth, loping like it has a huge , dare I say, cam.

Went out this afternoon, and it fired right up like the old motor did. The pic below is a firm, but not hard start, keeping the rpms under 3k, with 245/50/15 BFG T/As. Of course I had to do it twice.

Attached Thumbnails Now i know what BRAP BRAP sounds like-p5030005.jpg  

Last edited by trochoid; 05-04-05 at 05:33 AM.
Old 05-04-05 | 06:24 AM
  #19  
d. quinones's Avatar
LA FIEBRE

 
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From: Augusta, GA
That's what I'm talkin' about. I had a '79 Datsun with a
bridgeported 12a, the shocks were pretty worn out, so
you ought to see the look in peoples faces when they'd
see the body rocking side to side. Had a great time with
it, had to sell when I joined the military. Tks for showing
it man.
Old 05-11-05 | 08:54 AM
  #20  
Whizbang's Avatar
Respecognize!
 
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From: Anchor Bay, CA
whoa. wrong thread
Old 05-11-05 | 09:30 AM
  #21  
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From: Northern South Africa
Very nice work Mr Trochoid!Sounds healthy and nice

I miss my old Bp even more now....

I`ll have to build another one.

Brap-Brap-Brap-Brap
Old 05-11-05 | 11:18 AM
  #22  
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Rollin' coal and 53mpg!
 
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From: Jacksonville, Floriduh
Duh---licious!
Old 05-11-05 | 04:34 PM
  #23  
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OBEY YOUR MAZDA
 
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From: Denmark
Sounds friggin awesome.
Im getting more and more excited to crank up my BP IDA
Old 05-11-05 | 04:39 PM
  #24  
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From: Grand Rapids Michigan
So, how does it run? Is it streetable? Lemme know because you've sparked my interest...

Also, what do you figure the horsepower is with something like that? Thanks!
Old 05-11-05 | 09:04 PM
  #25  
trochoid's Avatar
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From: St Joe MO
I don't know how streetable it's going to be yet. I have the Mikuni on it and it is still jetted for a stock port 12a. I did have a set of jets in it for a 13b, but it flooded and fouled them the 3rd day I tried to start it up. I have a Holley 600 waiting to go on, but I need a few parts for the carb first.

It will be a while before the car hits the street. The body was striped down, leaving only the dash and wiring harnesses. Everything else was removed and refurbished or replaced.

As far as hp, from my reading, it should be in the 225-240 hp range. What I actually achieve remains to be seen. The motor was built out of parts from 3 others and only the soft seals, minus the oil control rings, were replaced. Since this is my first rebuild and porting, I couldn't see risking a full rebuild kit, in case the bridges failed. The motor that came out of the car ran strong, but had a dowel pin leak, so I have a backup to rebuild in case this one doesn't last long. I also have everything I need to do a TII swap, so my options are are open.

I've enclosed a pic to show the current state of progress.

Attached Thumbnails Now i know what BRAP BRAP sounds like-p5030003.jpg  


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