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

Got my 12a streetport dyno'd

Thread Tools
 
Search this Thread
 
Old 08-14-04, 01:32 AM
  #1  
Never satisfied

Thread Starter
 
Xavier8's Avatar
 
Join Date: Aug 2003
Location: San diego, CA
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
Got my 12a streetport dyno'd

Made it over to Vivid Racing's new dyno here in Atlanta to see what the little triumph would put down to the wheels. Heres what I have:
85 12a streetport (unknown size or pattern)
RB Holley 465
Custom Header to dual magnaflows
2nd gen direct fire
No anything, just the motor and an alternator

I pulled a 119 at the wheels on a Dynojet. I am pretty happy with this number with no tuning at all. That means 150 at the crank, or alittle less than 50% more hp than a stock motor. I have a horrible richening situation above 6500 or so where it gets as rich as 10:1. Otherwise racing beat hit it pretty well on. Maybe somebody or Holley themselves can tell me how to lean out the top end. That little 1.1 liter continues to impress me with alittle more than 100 hp/liter at the wheels. If only the stock triumph 1.5 liter was that peppy.

Last edited by Xavier8; 08-14-04 at 01:37 AM.
Old 08-14-04, 02:16 AM
  #2  
Lives on the Forum
Tenured Member 20 Years
iTrader: (5)
 
84stock's Avatar
 
Join Date: Apr 2003
Location: calgary
Posts: 5,541
Likes: 0
Received 11 Likes on 6 Posts
Be more specific on the the carb, is a racing beat modified one?? If not, you'll need a power valve plug for the primary metering plate.
Old 08-14-04, 09:05 AM
  #3  
Suicidal Death Missile

 
lovintha7's Avatar
 
Join Date: Mar 2004
Location: Newport News, Virginia
Posts: 1,782
Likes: 0
Received 0 Likes on 0 Posts
Try going down a jet size on the secondary side. IE if you have 82 jets, try going down to 80's.
Old 08-14-04, 09:11 AM
  #4  
Moderator
Tenured Member 20 Years
iTrader: (2)
 
rxtasy3's Avatar
 
Join Date: Jun 2002
Location: Spartanburg, SC
Posts: 9,405
Likes: 0
Received 268 Likes on 249 Posts
isn't the holley 465 for the stock port engine? i have the 600 on mine but it's a 13b tho.
Old 08-14-04, 10:32 AM
  #5  
Senior Member

 
Misthael's Avatar
 
Join Date: Apr 2003
Location: Owasso, OK
Posts: 530
Likes: 0
Received 0 Likes on 0 Posts
That's one sexy car
Old 08-14-04, 10:37 AM
  #6  
Absolute Power is Awesome

 
purple82's Avatar
 
Join Date: Mar 2001
Location: Issaquah, WA
Posts: 1,972
Received 5 Likes on 5 Posts
I love that car! Wanna sell it?
Old 08-14-04, 10:43 AM
  #7  
Banned. I got OWNED!!!
 
bouis's Avatar
 
Join Date: Sep 2003
Location: The South
Posts: 2,203
Received 572 Likes on 266 Posts
I bet it's more than good looks. Damn.
Old 08-14-04, 11:19 AM
  #8  
Never satisfied

Thread Starter
 
Xavier8's Avatar
 
Join Date: Aug 2003
Location: San diego, CA
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
The carb is definitely a racing beat modified 465 for a 12a streetport. They say that it is the right size at least. I could be wrong, but I think the secondary jet size is fixed unless you convert the carb to changable secondary jets. I may be forced to do that.
The little girl is still new to me, less than 6 months, and I enjoy 8k rpm to much to give her up yet. Boy do I love the rotary, a perfect match for this car.
Old 08-14-04, 11:22 AM
  #9  
the rxzero

 
rotorysuzuki's Avatar
 
Join Date: Dec 2003
Location: allentown PA
Posts: 363
Likes: 0
Received 0 Likes on 0 Posts
465 is to small I have a 650 doub le pumper thats what you need for streetport unless its a small sp I ran the 450 on my sp and it wasnt nearly as fast as what it is now
Old 08-14-04, 11:22 AM
  #10  
love the braaaap

 
85rotarypower's Avatar
 
Join Date: Jul 2003
Location: Bognor, Ontario
Posts: 3,771
Likes: 0
Received 5 Likes on 5 Posts
A holley 465 is good for a stock or mild streetported 12a engine. You might find more power if you go to the 600, but I kinda doubt that. Get that baby tuned and it'll make another 20 hp easily. Streetported 12a's normally make about 170 fwhp with a proper tuning, carb, and exhaust.h
Old 08-14-04, 10:03 PM
  #11  
****ty Tune= Low #'s

 
Rusty Shackleford's Avatar
 
Join Date: Apr 2004
Location: Charleston, SC (chucktown!)
Posts: 1,496
Likes: 0
Received 0 Likes on 0 Posts
i thought the racing beat holly carb set -up was supposed to put out around 65HP????
Old 08-14-04, 10:11 PM
  #12  
Senior Member

 
Misthael's Avatar
 
Join Date: Apr 2003
Location: Owasso, OK
Posts: 530
Likes: 0
Received 0 Likes on 0 Posts
You mean 165? It's supposed to when paired with the exhaust, but that may be flywheel hp not rwhp.
Old 08-14-04, 10:18 PM
  #13  
****ty Tune= Low #'s

 
Rusty Shackleford's Avatar
 
Join Date: Apr 2004
Location: Charleston, SC (chucktown!)
Posts: 1,496
Likes: 0
Received 0 Likes on 0 Posts
ohh yea i was thinkin that
Old 08-14-04, 11:00 PM
  #14  
Need an E6x

 
marlaman's Avatar
 
Join Date: Aug 2001
Location: Phoenix, AZ
Posts: 842
Likes: 0
Received 0 Likes on 0 Posts
A triumph is an easy 2nd place when it comes to my favorite car. of course the 7 being my first choice (generation doesn't even matter to me.) i got to drive one that i rode in for my homecoming parade after the festivities were over. everything was stock on the car and the owner (my math teacher) kept it in pristine condition. fun little sportster.


Your car gets mad KUDOS from me. combining an awesome little buggy with a very awesome engine and a good setup (due to your choosing).


Good luck with everything.
Matt
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Rotate86
Single Turbo RX-7's
5
05-18-18 02:44 PM
rx7inoregon
Old School and Other Rotary
5
10-01-15 12:44 PM



Quick Reply: Got my 12a streetport dyno'd



All times are GMT -5. The time now is 07:57 PM.