1st Gen General Discussion The place for non-technical discussion about 1st Gen RX-7s or if there's no better place for your topic

Dyno Predictions...

Old Oct 29, 2007 | 02:38 PM
  #1  
TheDriver216's Avatar
Thread Starter
Get the shovel and boots!
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 273
Likes: 0
From: Cleveland,OH
Dyno Predictions...

Ok i have an appointment to have a base line run done on thursday....thise way when i turbo it this winter ill know my gains.. so heres what i got... 82 Fb, a full exhaust RB headers (from what ive been told, not sure though) resonator to autozone dynomax muffler... Holley Red pump with FPR set at 4psi... denso plugs.. and everything else is stock. and a slightly slipping clutch when i ride it hard for a few.... i might upgrade to a captive disharge system before i go so dont include in predictions..... the run will be perfomed on a Mustang 1100se Dyno.. in bedford ohio at aprrox 950Ft elevation... So let the predictions begin...
Reply
Old Oct 29, 2007 | 03:21 PM
  #2  
Jeff20B's Avatar
Lapping = Fapping
Tenured Member 15 Years
iTrader: (13)
 
Joined: Aug 2001
Posts: 15,725
Likes: 91
From: Near Seattle
95hp
Reply
Old Oct 29, 2007 | 07:33 PM
  #3  
Directfreak's Avatar
I am a Jeeper Now.
Tenured Member 20 Years
iTrader: (2)
 
Joined: Dec 2001
Posts: 9,371
Likes: 4
From: 3OH5
102
Reply
Old Oct 29, 2007 | 07:36 PM
  #4  
Viking War Hammer's Avatar
*** Bless The USA
Tenured Member 15 Years
iTrader: (8)
 
Joined: Jan 2007
Posts: 7,140
Likes: 0
From: Saint Louis / Illinois
37.5 to the tire with a hiccup at 6k
Reply
Old Oct 29, 2007 | 08:57 PM
  #5  
dj55b's Avatar
Banned. I got OWNED!!!
iTrader: (2)
 
Joined: Oct 2004
Posts: 6,122
Likes: 1
From: London, Ontario
103
Reply
Old Oct 29, 2007 | 10:05 PM
  #6  
TheDriver216's Avatar
Thread Starter
Get the shovel and boots!
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 273
Likes: 0
From: Cleveland,OH
Originally Posted by Viking War Hammer
37.5 to the tire with a hiccup at 6k
eh i dunno about the hiccup it runs real smooth throughout the range but 37.5 is a very good possibility...
Reply
Old Oct 29, 2007 | 10:17 PM
  #7  
SavannaGT-12aT's Avatar
1979 RX-7 series1
 
Joined: Oct 2007
Posts: 28
Likes: 0
From: Adelaide, Australia
Sorry i stuffed up..... Would delete but i'm not sure how. Ha ha

Last edited by SavannaGT-12aT; Oct 29, 2007 at 10:25 PM.
Reply
Old Oct 29, 2007 | 10:22 PM
  #8  
SavannaGT-12aT's Avatar
1979 RX-7 series1
 
Joined: Oct 2007
Posts: 28
Likes: 0
From: Adelaide, Australia
At a guess, if its a 13b with your mods should pull around 120HP if the engine has been freshened up recently.
But if it's got a fair few K's(sorry it's mile's for you yanks ay)like say around 150,000'miles' then i'd think it would be around 100HP.
Not sure what engines and tune etc your cars come with so i'm interested to see what ya pull on tha rollers. All the best.
Reply
Old Oct 29, 2007 | 11:28 PM
  #9  
mikewoodkozar's Avatar
Brap, Brap, Ole!
Tenured Member 10 Years
 
Joined: Apr 2005
Posts: 1,461
Likes: 0
From: kalamazoo, mi
cross your fingers for triple digits
Reply
Old Oct 29, 2007 | 11:39 PM
  #10  
TheDriver216's Avatar
Thread Starter
Get the shovel and boots!
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 273
Likes: 0
From: Cleveland,OH
Originally Posted by mikewoodkozar
cross your fingers for triple digits
crossed and hoping... now mustang dynos read high or low?
Reply
Old Oct 29, 2007 | 11:56 PM
  #11  
Rogue_Wulff's Avatar
Too old to act my age
Tenured Member 05 Years
 
Joined: Feb 2005
Posts: 3,164
Likes: 0
From: Tulsa, Ok.
My prediction: The clutch lets go.
Reply
Old Oct 30, 2007 | 02:53 AM
  #12  
TheDriver216's Avatar
Thread Starter
Get the shovel and boots!
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 273
Likes: 0
From: Cleveland,OH
Originally Posted by Rogue_Wulff
My prediction: The clutch lets go.
eh i dunno about that itll prolly slip like a greased pig when done but it seems to regather after a bit.. ive been beating on it pretty good and it hasnt given way yet... but we shall see... my luck the whole thing will fall apart right after it gets off the dyno
Reply
Old Oct 30, 2007 | 09:37 AM
  #13  
Rogue_Wulff's Avatar
Too old to act my age
Tenured Member 05 Years
 
Joined: Feb 2005
Posts: 3,164
Likes: 0
From: Tulsa, Ok.
It's always been my experience that a clutch that slips occasionally on the street, will fail totally on the dyno. Prolly has something to do with the stress of trying to spin up those heavy drums. That will always make the weak link show up, and in this case it's the clutch.
Also, if you suspect it is gonna slip, you're not gonna get an accurate reading.
Reply
Old Oct 30, 2007 | 11:17 AM
  #14  
TheDriver216's Avatar
Thread Starter
Get the shovel and boots!
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jan 2007
Posts: 273
Likes: 0
From: Cleveland,OH
Originally Posted by Rogue_Wulff
It's always been my experience that a clutch that slips occasionally on the street, will fail totally on the dyno. Prolly has something to do with the stress of trying to spin up those heavy drums. That will always make the weak link show up, and in this case it's the clutch.
Also, if you suspect it is gonna slip, you're not gonna get an accurate reading.
eh but itll still be fun to see what it reads... it should hold up for a few runs... if not oh well buy a new one and put it in... ..i was holding off till i tear it apart for turbo upgraded stuff cuz most likely a turbo2 trans is going in. i have a lsd/disk rear etc etc.. so when it get apart itll be replaced with a high end clutch

Last edited by TheDriver216; Oct 30, 2007 at 11:20 AM. Reason: forgot some stuff
Reply
Old Oct 30, 2007 | 11:27 AM
  #15  
SLOASFK's Avatar
Top's always down
iTrader: (5)
 
Joined: Dec 2005
Posts: 4,841
Likes: 2
From: Spain
Originally Posted by TheDriver216
crossed and hoping... now mustang dynos read high or low?
low.
Reply
Old Oct 30, 2007 | 05:33 PM
  #16  
SavannaGT-12aT's Avatar
1979 RX-7 series1
 
Joined: Oct 2007
Posts: 28
Likes: 0
From: Adelaide, Australia
A cluch that fails on the street wont always fail on a dyno...
The dyno's is there to 'simulate' a roads surface. So it doesnt put anymore stress on your drivetrain than driving would... It's not as if you have to change gears on a dyno.... For power runs it just gets put in 4th(accelerated slowly thru tha first 3 gears-NO STRESS) an accelarated from 100km or so...
Think about the amount of **** that clutch would cop on tha street.. Poppin' gears, pumpin tha clutch an dropin it at high revs also what about those 7000rpm gear changes?? etc etc. On a dyno the clutch or box doesn't get thrashed out much at all. It might hamper performance abit but i'll guess that'll hold out...

Thats my input.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Rotate86
Single Turbo RX-7's
5
May 18, 2018 02:44 PM
eddierotary
Engine Management Forum
16
Oct 4, 2016 08:22 PM
HalifaxFD
Canadian Forum
126
May 9, 2016 07:06 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:00 AM.