Auxiliary Injection The place to discuss topics of water injection, alky/meth injection, mixing water/alky and all of the various systems and tuning methods for it. Aux Injection is a great way to have a reliable high power rotary.

My daily driven AI build/dyno thread

Thread Tools
 
Search this Thread
 
Old Apr 5, 2013 | 07:55 PM
  #76  
swkiller's Avatar
Thread Starter
Daily Used and Abused
Tenured Member 10 Years
iTrader: (1)
 
Joined: Dec 2008
Posts: 290
Likes: 1
From: South Florida
Originally Posted by BDC
Howard and I have talked about this before several times. I saw it on a customer's datalog on a plate-cracking dyno run from 6 years ago. I thought it was a fluke and didn't know what to think of it. I saw it again another time (although I've forgotten where) and then went, "wait a minute there's something to this". The couple of times I cracked plates on my red car's motor I didn't have a datalogger going so I have no idea (and it doesn't help it's the older E6K that only logs 11 samples a sec).

I think it's a backfire in the intake from an odd combustion pattern from what we suspect is instability in the gas/methanol combination coming from using too much methanol. I think the MAP sensor is registering the spike in manifold pressure accurately. Past that, I don't know.

B
That was what i thought as well but changing to 50/50 didnt change anything in respect to that. =/ if my memory serves me right i think in that specific hiccup voltage dropped(Microtech is sensitive when it comes to voltage). This time around im changing where the vacuum line feeds, tightening the alternator belt, and checking all grounds. As for how the car is running atm, she is apart focusing on flow, which involves Cosmo Re lim/uim bigger intercooler plus pipes, and more
Reply
Old Apr 5, 2013 | 07:57 PM
  #77  
swkiller's Avatar
Thread Starter
Daily Used and Abused
Tenured Member 10 Years
iTrader: (1)
 
Joined: Dec 2008
Posts: 290
Likes: 1
From: South Florida
Originally Posted by Shainiac
^Faulty MAP sensor?
I suspect that but praying its not >.< it would mean a month or so with no car.
Reply
Old Apr 5, 2013 | 08:14 PM
  #78  
jaggermouth's Avatar
Will TIG for 20b
Tenured Member 10 Years
iTrader: (1)
 
Joined: Mar 2008
Posts: 1,422
Likes: 3
From: Nanaimo
How are you putting the RE lower/upper manifolds on, the ports are significantly different unless you're making an adapter.
Also if you need a map sensor, I could probably ship you one just to help out.
Reply
Old Apr 5, 2013 | 10:16 PM
  #79  
swkiller's Avatar
Thread Starter
Daily Used and Abused
Tenured Member 10 Years
iTrader: (1)
 
Joined: Dec 2008
Posts: 290
Likes: 1
From: South Florida
hey jaggermouth thnx ill keep you in mind definately lets see if it still does the spike, i took the block out which doesnt take much time at all 1hr45min i think lol. the reason for this is before i start school plus a full time job i wanted to do some final upgrades. at first it was only for the cosmo manifold., but then i got talked into refreshing at least all the rotor springs. which i did end up finding an oil ring spring broken and one semi flat corner seal spring which is re-reused

my idea here is to focus on flow, im currently running 3inch intercooler pipes(3inch core intercooler) my turbo has a 3.5inch outlet so 3.5in intercooler pipes it is and 3.5 core. the outlet of the intercooler will be 4inch pipes to feed my engine. next in line is the TB, i need something that is going to match the size of the 4inch pipe, so i got a wilson racing 105mm tb (you can find it less expensive on amazon than on ebay ) well that plus the lim/uim. i did grind down all humps on the inside of the lim as well. anthying that can bottle neck air. we shall see the difference in power shortly =) oh and maybe there will be something more to add to the list, lets wait and find out
Reply
Old Jun 18, 2013 | 11:13 AM
  #80  
Laz93RX7's Avatar
All Hail the Magic Conch!
Tenured Member 10 Years
iTrader: (5)
 
Joined: Jun 2008
Posts: 1,389
Likes: 1
From: Miami, FL

Last edited by Laz93RX7; Jun 18, 2013 at 11:16 AM. Reason: was on my friends profile by mistake
Reply
Old Jun 19, 2014 | 03:50 PM
  #81  
swkiller's Avatar
Thread Starter
Daily Used and Abused
Tenured Member 10 Years
iTrader: (1)
 
Joined: Dec 2008
Posts: 290
Likes: 1
From: South Florida
Originally Posted by swkiller
hey jaggermouth thnx ill keep you in mind definately lets see if it still does the spike, i took the block out which doesnt take much time at all 1hr45min i think lol. the reason for this is before i start school plus a full time job i wanted to do some final upgrades. at first it was only for the cosmo manifold., but then i got talked into refreshing at least all the rotor springs. which i did end up finding an oil ring spring broken and one semi flat corner seal spring which is re-reused

my idea here is to focus on flow, im currently running 3inch intercooler pipes(3inch core intercooler) my turbo has a 3.5inch outlet so 3.5in intercooler pipes it is and 3.5 core. the outlet of the intercooler will be 4inch pipes to feed my engine. next in line is the TB, i need something that is going to match the size of the 4inch pipe, so i got a wilson racing 105mm tb (you can find it less expensive on amazon than on ebay ) well that plus the lim/uim. i did grind down all humps on the inside of the lim as well. anthying that can bottle neck air. we shall see the difference in power shortly =) oh and maybe there will be something more to add to the list, lets wait and find out
Well I finally found out. took the car to the dyno again. Running 50/50 water meth 2 600 cc injectors one post and the other after the intercooler. Made 551whp @20psi. That's 80whp more than the last time, temperature outside that day was 98deg F. The hiccups on my old dyno run were caused by the alternator belt slightly slipping causing fluctuations in voltage thus changing the tune.
This new setup difference is the bigger TB. Cosmo intake. Semi pp. And larger street port than before. Along with the bigger intercooler and a bigger back housing for the turbo.

I plan to take it again in winter went temperatures are lower. Would like to raise my Rev limit to 8.5k since the power was still rising. I believe by the way the dyno graph shows there might be another 10-20 whp just by raising my Rev limiter.
Reply
Old Jun 20, 2014 | 06:17 AM
  #82  
rx7 SE's Avatar
Enthusiast
Tenured Member 15 Years
iTrader: (5)
 
Joined: Aug 2004
Posts: 2,181
Likes: 1
From: Charlotte, NC
wow! show us the dyno plot! good job man
Reply
Old Jul 8, 2014 | 04:07 PM
  #83  
swkiller's Avatar
Thread Starter
Daily Used and Abused
Tenured Member 10 Years
iTrader: (1)
 
Joined: Dec 2008
Posts: 290
Likes: 1
From: South Florida
sorry for the delay.
Attached Thumbnails My daily driven AI build/dyno thread-dyno-run.jpg   My daily driven AI build/dyno thread-dyno-day-temp.jpg  
Reply
Old Jul 8, 2014 | 05:54 PM
  #84  
rx7 SE's Avatar
Enthusiast
Tenured Member 15 Years
iTrader: (5)
 
Joined: Aug 2004
Posts: 2,181
Likes: 1
From: Charlotte, NC
yeah you have a lot more power to be made there as your torque hadn't significantly started to drop off yet
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jdayau
Build Threads
8
Nov 29, 2019 12:11 AM
sctRota
Old School and Other Rotary
7
Nov 10, 2015 12:57 PM
mulcryant
2nd Generation Specific (1986-1992)
10
Sep 9, 2015 05:24 PM




All times are GMT -5. The time now is 07:08 AM.