Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

Drag racing setup

 
Old 06-01-2019, 03:23 PM
  #121  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

Miata2fast,
do you think switching from a 225 tire (15x8 +25) on the front of the car to stock 185 tires (14x6) will help the car pick up a couple mph trap speed? Less tire poking out.
Going to the strip Wednesday
LownSlow616 is offline  
Old 06-01-2019, 10:38 PM
  #122  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 19,329
Total Cats: 2,434
Default

Originally Posted by LownSlow616 View Post
Miata2fast,
do you think switching from a 225 tire (15x8 +25) on the front of the car to stock 185 tires (14x6) will help the car pick up a couple mph trap speed? Less tire poking out.
Going to the strip Wednesday
Definitely faster, but more for reasons of rotational mass.
sixshooter is offline  
Old 06-02-2019, 08:15 AM
  #123  
Junior Member
Thread Starter
 
Join Date: Nov 2017
Posts: 95
Total Cats: 4
Default

Originally Posted by sixshooter View Post
Definitely faster, but more for reasons of rotational mass.
So,would a heavier and narrower front setup be quicker than a wider and lighter front?

Also, thanks for the sway bar tips
Dusterbd13 is offline  
Old 06-02-2019, 12:47 PM
  #124  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

Ready for the strip.
Axles are almost parallel to the ground. Going to raise the rear even more to get them perfectly parallel for maximum strength. Im pretty happy with this fitment for such a big tire on a stock fender

Im honestly scared to ride out 4th gear in this thing. If it making the power i think its making, it should trap over 125. The top of 3rd (~90mph) already scares me. Wish me luck ??

Drag racing setup-20190602_110645.jpg
Drag racing setup-20190602_110913.jpg
Drag racing setup-20190602_111239.jpg
LownSlow616 is offline  
Old 06-02-2019, 02:13 PM
  #125  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 19,329
Total Cats: 2,434
Default

Looks like it will cut your sidewalls when the weight transfers to the rear end. I would definitely raise it. Racing isn't about looking just right.

Those stock wheels are a fine choice.
sixshooter is offline  
Old 06-02-2019, 04:51 PM
  #126  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

Originally Posted by sixshooter View Post
Looks like it will cut your sidewalls when the weight transfers to the rear end. I would definitely raise it. Racing isn't about looking just right.

Those stock wheels are a fine choice.
I keep moving my coilovers up but its not really doing much for ride height. I think its just compressing the spring more and more. Which will make rear more stiff? Not sure how they work. Theyre just cheap tein adjustment height coilovers
LownSlow616 is offline  
Old 06-02-2019, 10:21 PM
  #127  
Junior Member
 
Join Date: Mar 2012
Posts: 96
Total Cats: 24
Default

Originally Posted by LownSlow616 View Post
I keep moving my coilovers up but its not really doing much for ride height. I think its just compressing the spring more and more. Which will make rear more stiff? Not sure how they work. Theyre just cheap tein adjustment height coilovers
If they're the ones without the shock body length adjustment, and only have the spring perch adjust, then you may have already hit the maximum length of the shock.

The shock rod itself may be "topping out"



the easiest way to get more height (assuming the above is what's happening) would be to buy a pair of shock spacers and put them on.
hks_kansei is offline  
Old 07-12-2019, 01:41 PM
  #128  
Junior Member
 
Mudflap's Avatar
 
Join Date: May 2017
Location: Louisville, Co
Posts: 338
Total Cats: 73
Default

Results???
Mudflap is offline  
Old 07-12-2019, 03:58 PM
  #129  
Elite Member
iTrader: (5)
 
Join Date: Oct 2007
Location: Canton, Ga
Posts: 2,027
Total Cats: 54
Default

Man that NB looks beastly
Stealth97 is offline  
Old 07-12-2019, 06:48 PM
  #130  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

12.09 @128

Going back with flat shift set up to go 11s and over 130.
Datalog from 128mph run showed .7 seconds average from the time throttle 100% to full boost while shifting
LownSlow616 is offline  
Old 07-12-2019, 07:56 PM
  #131  
Junior Member
 
Mudflap's Avatar
 
Join Date: May 2017
Location: Louisville, Co
Posts: 338
Total Cats: 73
Default

Very impressive. I just went to the dragstrip for the first time in my life last Wednesday. I got a 13.08 @ 122mph. Pretty happy with it. I've got to figure out the wheel hop at the start, had a horrible 2.7second 60'. I'm pulling the diff to get solid mounts this weekend. At this hp level I'd predict to be in the 12s for sure. Just suck at the launch..

Here's a question - I'm running 27psi boost and my MAT goes from 100F to 180F during the run. Is that excessive? Risky? I'm running the FM intercooler.
Mudflap is offline  
Old 07-12-2019, 07:58 PM
  #132  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

Originally Posted by Mudflap View Post
Very impressive. I just went to the dragstrip for the first time in my life last Wednesday. I got a 13.08 @ 122mph. Pretty happy with it. I've got to figure out the wheel hop at the start, had a horrible 2.7second 60'. I'm pulling the diff to get solid mounts this weekend. At this hp level I'd predict to be in the 12s for sure. Just suck at the launch..

Here's a question - I'm running 27psi boost and my MAT goes from 100F to 180F during the run. Is that excessive? Risky? I'm running the FM intercooler.
Seems excessive to me. The second my car starts moving (airflow) the iats DROP to ambient or slightly above. I also have a big *** IC and no headlight tho
LownSlow616 is offline  
Old 07-12-2019, 08:25 PM
  #133  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,152
Total Cats: 258
Default

I wish he would post here more. He posted this on facebook.

viperormiata is offline  
Old 07-12-2019, 09:07 PM
  #134  
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,828
Total Cats: 269
Default

Originally Posted by Mudflap View Post
Very impressive. I just went to the dragstrip for the first time in my life last Wednesday. I got a 13.08 @ 122mph. Pretty happy with it. I've got to figure out the wheel hop at the start, had a horrible 2.7second 60'. I'm pulling the diff to get solid mounts this weekend. At this hp level I'd predict to be in the 12s for sure. Just suck at the launch..

Here's a question - I'm running 27psi boost and my MAT goes from 100F to 180F during the run. Is that excessive? Risky? I'm running the FM intercooler.
Yes, and costing you time too. I think mine is more like a 25-30*F rise now, it used to be a lot worse like yours.

Wheel hop fix takes a lot, I had to make several changes to fix that.
patsmx5 is offline  
Old 07-13-2019, 01:54 AM
  #135  
Elite Member
iTrader: (2)
 
Join Date: Aug 2016
Location: New Fucking Jersey
Posts: 3,957
Total Cats: 109
Default

Originally Posted by patsmx5 View Post
Yes, and costing you time too. I think mine is more like a 25-30*F rise now, it used to be a lot worse like yours.

Wheel hop fix takes a lot, I had to make several changes to fix that.
Pat!
ridethecliche is offline  
Old 07-13-2019, 09:59 AM
  #136  
Elite Member
iTrader: (5)
 
Erat's Avatar
 
Join Date: Oct 2011
Location: Detroit (the part with no rules or laws)
Posts: 4,982
Total Cats: 423
Default

Big soft squishy tires. That's the best way to solve hop.

And get a better intercooler.
Erat is offline  
Old 07-13-2019, 10:37 AM
  #137  
Junior Member
 
Join Date: May 2015
Location: Grand Rapids, MI
Posts: 441
Total Cats: -29
Default

Originally Posted by Erat View Post
Big soft squishy tires. That's the best way to solve hop.

And get a better intercooler.
100% true. I had 0 wheel hop with the big side wall hoosiers. Even when it hooked after burnout
LownSlow616 is offline  
Old 07-13-2019, 11:20 AM
  #138  
Junior Member
Thread Starter
 
Join Date: Nov 2017
Posts: 95
Total Cats: 4
Default

What kind of roll bars or roll cages are you guys running at these times? I was told I would need an NHRA 5 point bar to go quicker than 13.49
Dusterbd13 is offline  
Old 07-13-2019, 11:32 AM
  #139  
Newb
 
Join Date: Dec 2016
Posts: 37
Total Cats: 4
Default

Originally Posted by Dusterbd13 View Post
What kind of roll bars or roll cages are you guys running at these times? I was told I would need an NHRA 5 point bar to go quicker than 13.49
Yep. This is true, and they are supposed to be weld in on steel plates. However many of the smaller tracks are rather lenient on the rules. I just ordered an Alston 8 point setup from jegs. They aren't that expensive. Getting it fitted and welded is another story.
Newaza is offline  
Old 07-13-2019, 11:55 AM
  #140  
Newb
 
Join Date: Dec 2016
Posts: 37
Total Cats: 4
Default

Also when you get it sorted out and make some passes please post your times and setup required to achieve those times on my thread titled " post your 1/8th and 1/4 mile times". I figured if people would post there times and setups in one place it will be easier for people to find and see what works and what doesn't.
Newaza is offline  

Thread Tools
Search this Thread

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.