Old School and Other Rotary Old School and Other Rotary Powered Vehicles including performance modifications and technical support

1974 13b-re Nova

Thread Tools
 
Search this Thread
 
Old 02-16-12, 09:35 PM
  #626  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Originally Posted by Grant M
What diff ratio are you using?
4.30 with a 28" slick.
Old 02-17-12, 01:18 AM
  #627  
7s before paint!!!

iTrader: (2)
 
13B-RX3's Avatar
 
Join Date: Aug 2003
Location: Philly/Texas
Posts: 3,814
Likes: 0
Received 0 Likes on 0 Posts
I thought you were running drag radials. What do your dad and brother think about it?
Old 02-17-12, 11:02 AM
  #628  
RX 4BPT
 
Grant M's Avatar
 
Join Date: Feb 2011
Location: Huddersfield, England
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 13brenova
4.30 with a 28" slick.
What gear box are you using with that? An FD gear box? I'm just interested as I am using a 4.672 diff with an FD gear box and with that I'm hoping to be able to get into 4th gear up the strip well before the 1/4 line. As I noticed you got into 4th.

Car sounds really good too, are you using any kind of muffling/silencing?
Old 02-17-12, 04:08 PM
  #629  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Originally Posted by Grant M
What gear box are you using with that? An FD gear box? I'm just interested as I am using a 4.672 diff with an FD gear box and with that I'm hoping to be able to get into 4th gear up the strip well before the 1/4 line. As I noticed you got into 4th.

Car sounds really good too, are you using any kind of muffling/silencing?
S4 TII trans. No muffler in these videos. On the street it runs a Burns SS Muffler which actually quiets it down quite a bit.
Old 02-20-12, 04:20 AM
  #630  
Auto Pilot

 
rXc3|\|tR1c's Avatar
 
Join Date: Jun 2006
Location: Tbar, Australia
Posts: 74
Likes: 0
Received 0 Likes on 0 Posts
You need something in the low 5's I reckon gear wise. Should be maxing out in 4th at least across the line with the s4 box.
Old 02-26-12, 03:40 PM
  #631  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
I never thought about it before, but when I went with all heim joints vs the typical poly bushing in the rear, it made the rear suspension able to flex like a rock crawler! I need the throw this thing on an RTI ramp! I swapped the rear 150 lb/in springs with 170 lb/in and have an OEM style Chris Alston's 3/4" solid sway bar on the way. Should straighten out the launch a bit and keep it from pulling the front left tire so damn much. It's neat for the videos, but isn't helping the 60' times and makes the thing a bitch to drive. Double adjustable shocks in the front ought to help that too.

Did a once-over of the car and the only thing I was was that the oil pan hit the track when it came down from almost eating the wall. Glad I went with 3/16" aluminum on that. It just put a little scratch on it. Double adjustable shocks in the front ought to let me slow down the compression so it doesn't happen again and keep it from bouncing and more stable on the top end.

The car was intended to be primarily a street car, but I had so much fun at the track, I've decided to throw in a 6pt chrome moly roll bar with door swing outs. Should only add about 50 lbs to the car. I'll run a little less gas in the tank and meth/water resevoir to compensate........and go on a diet! That way, I can run at Baytown without having to rent Hennessey's track......can't afford to do that too many more times!

But before that we'll take the car to the dyno, up the boost to 26-27psi and get a tiny bit more agressive on the tune so we can shoot for low 10's and 130+ mph traps next time.
Old 02-26-12, 03:56 PM
  #632  
7s before paint!!!

iTrader: (2)
 
13B-RX3's Avatar
 
Join Date: Aug 2003
Location: Philly/Texas
Posts: 3,814
Likes: 0
Received 0 Likes on 0 Posts
Nice Nick, i can't wait till your next track day! You need to throw up some pics on the YB thread.
Old 03-14-12, 08:32 PM
  #633  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Well, we're taking things to the next level. Today I ordered an 8 pt chrome moly roll bar from S&W and some 3" 5 pt seat belts. I'm also swapping the rear axle studs for longer ones that will meet NHRA requirements when running the slicks. Only thing the track officials could have a problem with is the battery location under the dash. Hopefully the guys at the track will let it slide on test and tune nights.....

Not long and it'll be time to turn up the boost and run it until something breaks!!
Old 04-01-12, 06:19 PM
  #634  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Made some progress on the roll bar over the last couple of weekends. The Nova is a unibody, like an rx7. So, I had to make the reinforcing plates for the cage to sit on. The main hoop and door bar plates are mostly on the rocker panels and the rears are directly over the framrails.

All the fab is done for the sway bar. No pics yet because I still have the axle out.

Name:  DSCN0786.jpg
Views: 228
Size:  68.9 KB

Name:  DSCN0784.jpg
Views: 199
Size:  113.8 KB

Name:  DSCN0785.jpg
Views: 227
Size:  121.7 KB

Name:  DSCN0788.jpg
Views: 213
Size:  148.7 KB

Name:  DSCN0783.jpg
Views: 202
Size:  127.4 KB
Old 04-01-12, 06:42 PM
  #635  
Water Injection Specialist

 
Erdin's Avatar
 
Join Date: Apr 2003
Location: UK
Posts: 479
Likes: 0
Received 0 Likes on 0 Posts
what kind of welder are you useing?
Old 04-01-12, 07:43 PM
  #636  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Originally Posted by Erdin
what kind of welder are you useing?
Lincoln 225 Tig
Old 05-05-12, 09:02 PM
  #637  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Everything on the roll bar is fit up. Time to start welding.

Name:  DSCN0918.jpg
Views: 211
Size:  170.9 KB

Name:  DSCN0921.jpg
Views: 191
Size:  99.1 KB

Name:  DSCN0926.jpg
Views: 197
Size:  94.2 KB

Name:  DSCN0927.jpg
Views: 207
Size:  79.2 KB

Name:  DSCN0922.jpg
Views: 224
Size:  88.1 KB

Name:  DSCN0934.jpg
Views: 203
Size:  113.6 KB
Old 05-05-12, 09:07 PM
  #638  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Swaybar............
Name:  DSCN0929.jpg
Views: 196
Size:  121.5 KB

Name:  DSCN0930.jpg
Views: 205
Size:  155.0 KB
Old 05-21-12, 07:40 PM
  #639  
Rotary Enthusiast

iTrader: (15)
 
statique's Avatar
 
Join Date: Feb 2006
Location: MIA Baby!!!
Posts: 833
Likes: 0
Received 0 Likes on 0 Posts
i love how lilhemi doesn't have anything else to say... and god bless your build lol
Old 05-29-12, 07:54 PM
  #640  
*** Bless The USA

iTrader: (8)
 
Viking War Hammer's Avatar
 
Join Date: Jan 2007
Location: Saint Louis / Illinois
Posts: 7,139
Received 0 Likes on 0 Posts
Bad to the bone
Old 06-09-12, 09:05 PM
  #641  
Glock Lover

 
TonyTurboII's Avatar
 
Join Date: Mar 2001
Location: Currently residing in St Charles, MO
Posts: 2,223
Likes: 0
Received 0 Likes on 0 Posts
Hey, I'm just curious as to where you got your AN adapters from your turbo lines into the front housing? I had to fab up something with the stock lines that I think may have caused me some turbo issues.
Old 06-09-12, 11:31 PM
  #642  
Junior Member

 
sonnytalfred's Avatar
 
Join Date: May 2007
Location: texas
Posts: 39
Received 1 Like on 1 Post
hi when u are going to baytown let me know. i am normaly the only 1st gen rx7 out there. running with the big dog every friday night
Old 06-12-12, 08:52 AM
  #643  
Junior Member
 
osofast35801's Avatar
 
Join Date: Jun 2012
Location: Huntsville, AL.
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Goodnight, would you look at that! Very nice build!
Old 06-16-12, 01:53 PM
  #644  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Originally Posted by TonyTurboII
Hey, I'm just curious as to where you got your AN adapters from your turbo lines into the front housing? I had to fab up something with the stock lines that I think may have caused me some turbo issues.
I'll have to check. I don't remember anymore.
Old 06-16-12, 01:55 PM
  #645  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
All painted.....

Name:  DSCN1090.jpg
Views: 202
Size:  250.7 KB

Name:  DSCN1091.jpg
Views: 193
Size:  285.9 KB

Name:  DSCN1092.jpg
Views: 202
Size:  211.5 KB
Old 06-16-12, 02:47 PM
  #646  
7s before paint!!!

iTrader: (2)
 
13B-RX3's Avatar
 
Join Date: Aug 2003
Location: Philly/Texas
Posts: 3,814
Likes: 0
Received 0 Likes on 0 Posts
Looks badass Nick! Now get that beast back out to the track!
Old 09-16-12, 09:28 AM
  #647  
Learns the hard way.....

Thread Starter
iTrader: (2)
 
13brenova's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, Tx
Posts: 438
Likes: 0
Received 5 Likes on 1 Post
Haven't updated in a while...... I swapped the 4.30 gears for 4.56s to help with the launch and to raise the RPMs at the finish line a bit. I also switched the turbine housing from a 1.15 to a 1.28 A/R. This resulted in a big reduction in EGT and had a negligable effect on spool. No data to confirm it yet, but there had to be a considerable increase in horsepower at the top of the curve given that kind of reduction in EGT.

https://www.rx7club.com/single-turbo...ine-r-1007515/

Yesterday, I cranked the boost up to 25 psi and everything is holding up great. The thing is a freaking A....NI....MAL with that much boost!

In the process of moving to Ft. Worth, so hopefully in a couple of months, we'll get this thing back on the dyno and off to the races.
Old 09-16-12, 01:52 PM
  #648  
E85 Addict

 
gusfd3s's Avatar
 
Join Date: Jun 2007
Location: Stockholm
Posts: 519
Likes: 0
Received 2 Likes on 2 Posts
Super clean car!
Old 09-16-12, 03:38 PM
  #649  
Junior Member
 
84rx7NA's Avatar
 
Join Date: Aug 2010
Location: Clarksville, IN
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
This thing looks insane! I cant wait for videos and dyno sheets!
Old 09-16-12, 05:48 PM
  #650  
Luis Rx3 Project

iTrader: (3)
 
chino_rx3's Avatar
 
Join Date: Jun 2007
Location: SARASOTA ,Florida
Posts: 1,314
Received 11 Likes on 11 Posts
Looking good , love the car and especially the motor.


Quick Reply: 1974 13b-re Nova



All times are GMT -5. The time now is 09:03 AM.