Single Turbo Discussion Area for discussing single turbo RX-7's.

Taction issues... ya think?

Old 12-31-2007, 04:12 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Dec 2001
Location: Jensen Beach, FL / Sylva, NC
Posts: 2,934
Default

After lots of reading on here about tuning, timing, etc... I finally decided to take it out for some tuning today since it is now broken it. These are 1/2 to 3/4 throttle pulls in second gear.



This is one of the 255 wide Yokohama Advan A032R tires with almost no thread left. They give up the fight at 5K RPM every time. I have not opened it up in 3rd yet but I am worried there will be issues there too. The car is a monster, I cannot believe how hard she is hitting. I am wondering if my 10" wide Hoosier slicks are going to have enough traction for it now.



I am running 15 PSI right now but I think I am dropping it down to 10 PSI and see if its more drivable.









If you click Full screen and make the video bigger you can watch the tach jump from 4K to 8K RPM's instantly, I could not react fast enough to let out of it.



http://s6.photobucket.com/albums/y219/Jims...ncar2ndgear.flv
Jims5543 is offline  
Old 12-31-2007, 07:00 PM
  #2  
Member
 
Join Date: Dec 2007
Location: EastCoast , Florida
Posts: 78
Default

Originally Posted by Jims5543' post='891176' date='Dec 31 2007, 05:12 PM
After lots of reading on here about tuning, timing, etc... I finally decided to take it out for some tuning today since it is now broken it. These are 1/2 to 3/4 throttle pulls in second gear.



This is one of the 255 wide Yokohama Advan A032R tires with almost no thread left. They give up the fight at 5K RPM every time. I have not opened it up in 3rd yet but I am worried there will be issues there too. The car is a monster, I cannot believe how hard she is hitting. I am wondering if my 10" wide Hoosier slicks are going to have enough traction for it now.



I am running 15 PSI right now but I think I am dropping it down to 10 PSI and see if its more drivable.









If you click Full screen and make the video bigger you can watch the tach jump from 4K to 8K RPM's instantly, I could not react fast enough to let out of it.



http://s6.photobucket.com/albums/y219/Jims...ncar2ndgear.flv




hello Jim , sounds awesome and thats some really quick spull ups no lag at all , I bet you feel alot of relief since you broke the engine in now comes the really fun part on enjoying it . About the traction deal it could be the tires or your pre load on at the rear drop by Jr's and get his expertise advice . when are you planning on hittting the Dyno if you are? let me know would like to go with you if you dont mind . Take dude and be very carefull with that cars you might have to learn it all over again LOL
13BT_Starlet is offline  
Old 01-03-2008, 11:18 AM
  #3  
Senior Member
Thread Starter
 
Join Date: Dec 2001
Location: Jensen Beach, FL / Sylva, NC
Posts: 2,934
Default

Maa, I never get to tell JR anything.





tire problem fixed, placed an order with Edge Racing last night I should have the new tires on the car next week.



Jims5543 is offline  
Old 01-03-2008, 03:14 PM
  #4  
Senior Member
 
Join Date: Oct 2001
Location: Peoria, AZ
Posts: 10,906
Default

Going to be a different story with new tires. Still going to spin them if the ground is cold however..
1Revvin7 is offline  
Old 01-04-2008, 07:14 PM
  #5  
Member
 
Join Date: Dec 2007
Location: EastCoast , Florida
Posts: 78
Default

Originally Posted by Jims5543' post='891412' date='Jan 3 2008, 12:18 PM
Maa, I never get to tell JR anything.





tire problem fixed, placed an order with Edge Racing last night I should have the new tires on the car next week.







Ah you went with the Nitto's Good choice , What do you mean about the Jr thing ? Why was up fill me in
13BT_Starlet is offline  
Old 01-06-2008, 04:44 PM
  #6  
Senior Member
Thread Starter
 
Join Date: Dec 2001
Location: Jensen Beach, FL / Sylva, NC
Posts: 2,934
Default

The internets travel faster then I can.



I knew if I posted that vid he would find out about it before I saw him. No worries though it was sort of a joking thing.



Having boost control issues so she is parked until I can sort it out. Might be a line run wrong or a ripped diaphragm.





The tires are Falken Azenis.
Jims5543 is offline  
Old 01-07-2008, 06:33 PM
  #7  
Member
 
Join Date: Dec 2007
Location: EastCoast , Florida
Posts: 78
Default

Originally Posted by Jims5543' post='891644' date='Jan 6 2008, 05:44 PM
The internets travel faster then I can.



I knew if I posted that vid he would find out about it before I saw him. No worries though it was sort of a joking thing.



Having boost control issues so she is parked until I can sort it out. Might be a line run wrong or a ripped diaphragm.





The tires are Falken Azenis.


Oh really tell me about it , must be more ppl on the forum besides us from this area .



whats up with the boost Issue is the boost controller or the wastegate?



They looked like nitto's Neogen , oops I'll take it back
13BT_Starlet is offline  
Old 01-07-2008, 09:32 PM
  #8  
Senior Member
 
Join Date: Feb 2003
Location: Miami, Florida
Posts: 1,591
Default

that is sick man really sick you need to get a 3rd gear video
RX7 13B 4 UR AZZ is offline  
Old 01-08-2008, 05:30 PM
  #9  
Senior Member
Thread Starter
 
Join Date: Dec 2001
Location: Jensen Beach, FL / Sylva, NC
Posts: 2,934
Default

3 of the 4 Tires came in and I am off to the garage to sort out this boost deal.



3rd gear video coming soon.



Jims5543 is offline  
Old 01-08-2008, 08:36 PM
  #10  
Senior Member
Thread Starter
 
Join Date: Dec 2001
Location: Jensen Beach, FL / Sylva, NC
Posts: 2,934
Default

3 hours later, its fixed, hold rock steady at 10 PSI now, much more drivable now even with bald tires.





Ughhh! If you have never changed a wastegate diaphragm you have not lived through a frustrating exercise in sanity.



4 screws!! 4 Screws!! thats all it takes to change out the diaphragm. Its easy to get them off, real easy, then the huge spring inside is set free, then you have to push the cover back on against to pressure of the spring, keep the holes on the diaphragm lined up and the cover holes lined up, then with your 3rd hard screw in the damn screws!! Oh and I forgot to say that your under the car doing this, with the downpipe for the exhaust running about 10 millimeters away and doing all it can to get in the way. There is no room to work as well and no real way to get leverage.



This is only my second time doing this and my last, I am shopping for one of the new piston waste gates that have no diaphragms in them.



Well, the good news is its fixed, now once my final tire shows up I am done. Hmmmm.... there is a Autocross in 2 weeks......
Jims5543 is offline  

Thread Tools
Search this Thread
Quick Reply: Taction issues... ya think?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.