Race Car Tech Discuss anything related to road racing and auto X.

The Hillclimb RX7 - a saga

Thread Tools
 
Search this Thread
 
Old Apr 21, 2015 | 08:36 AM
  #151  
eage8's Avatar
1308ccs of awesome
Tenured Member: 20 Years
iTrader: (9)
 
Joined: Sep 2003
Posts: 6,189
Likes: 18
From: Woodbine, MD
Also, it looks like you're going to need longer springs

what rates are you running?
Reply
Old Apr 21, 2015 | 10:08 AM
  #152  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Yeah it's a 7 frame. Who needs extra time and money when you can have 4 projects at once!

Springs are 450lbs front 250 rear. The length will be OK, little bit of optical illusion going on.
Reply
Old Apr 28, 2015 | 06:07 PM
  #153  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
More progress. Got some tigging done today for the coolant lines and added a fitting to the radiator.


The MX-5 got to channel Radbull a little too
Reply
Old Apr 28, 2015 | 06:08 PM
  #154  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
New main pulley came in so that was installed and I set timing. Clutch hydraulics are all installed and working. Pedal feels awesome. Front brakes got plumbed in as well. Rears are on hold for more Nicopp tubing.

Modified the dash a little to make it stronger - now you can shake the car by pulling on it.

Wired in the relays for the fuel pumps and fan. Made my own thinwall spark plug socket rather than paying way too much for a pre-made model. Installed my new NGK racing plugs.
Reply
Old Apr 30, 2015 | 06:25 AM
  #155  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Reply
Old May 6, 2015 | 10:05 AM
  #156  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Finally mounted up. Also drilled and tapped the top of the radiator for an air bleed.





This week is all plumbing and finalizing the wiring for the fan and fuel pumps, then it's all about safety gear installation before the Ascutney Hillclimb May 15th-16th
Reply
Old May 7, 2015 | 06:12 AM
  #157  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Yup, going to have to cut the hood. Not even mad


Finalized the wiring last night and tested it for the first time. All the smoke stayed in the wires!

Last edited by DaveEstey; May 7, 2015 at 10:03 AM.
Reply
Old May 7, 2015 | 08:16 PM
  #158  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Jesus christ does assembling -16AN lines suck


Fuel pumps are installed, wired and plumbed. I do want to swap a straight fitting out for a 90 though for better fitment.
Reply
Old May 11, 2015 | 06:39 AM
  #159  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA










Reply
Old May 12, 2015 | 06:38 AM
  #160  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Took the cell and radiator out about 7 times last night. Wanted to make sure everything was mounted on rubber isolators and then I tweaked the shroud design a touch. After that I had to throw on the tail lights for a "feel good" moment.




Ran my new brake hard line to the rear of the car and then drip bled the brakes. All four corners were dripping readily so I should be OK to get the lady friend to work the pedal for a final bleed. Started assembling more -16AN coolant lines. What a bear those things are.
Reply
Old May 13, 2015 | 10:04 AM
  #161  
eage8's Avatar
1308ccs of awesome
Tenured Member: 20 Years
iTrader: (9)
 
Joined: Sep 2003
Posts: 6,189
Likes: 18
From: Woodbine, MD
this is awesome.

how are you getting air into the radiator?
Reply
Old May 14, 2015 | 10:56 AM
  #162  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
For this weekend it's just cabin air from the car having no windows plus the fan. We'll see how that goes and adjust from there. It's all an experiment. Luckily the radiator is waaaaaay larger than it needs to be.

In other news - she runs! I was completely caught off guard by how easy it started...


Today is a lot of sheet metal work and fabrication - including a throttle cam.
Reply
Old May 15, 2015 | 10:19 AM
  #163  
wrankin's Avatar
Old Rotary Dog
Tenured Member 15 Years
 
Joined: Feb 2003
Posts: 1,461
Likes: 2
From: Durham, NC
When you said "throttle cam" for just a second I thought you were planning to stick a GoPro in the engine bay.
Reply
Old May 17, 2015 | 04:25 PM
  #164  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Beep


Bop


Boop


Bam
Reply
Old May 17, 2015 | 04:27 PM
  #165  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Car passed tech at the hillclimb and earned kudos from the inspector for a "very nice build"


First run it unveiled a horrible lean-out situation when it transitioned to the secondaries. The chokes are way too big (48mm). The only part for the car that I don't have multiple adjustments for? The chokes. Luckily I had an eye on the AFR gauge and shut shut down after 30 yards so no harm done.

Back on the trailer and headed home. New chokes ordered.


Womp womp
Reply
Old May 17, 2015 | 08:19 PM
  #166  
driven-daily's Avatar
Raced Regularly
 
Joined: Jan 2015
Posts: 135
Likes: 0
From: Manchganistan, NH, USA
Getting to see your car was inspiring. I think everyone within 5 miles of the mountain had the pleasure of hearing it when you took off. It looks/sounds like it'll be ready (with a coolant firewall) for Burke?
Reply
Old May 18, 2015 | 07:36 AM
  #167  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
If the new chokes solve my lean-out issue I'll be there with a new lexan bulkhead and a muffler.
Reply
Old May 21, 2015 | 01:27 PM
  #168  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
new transmission acquired. Swap will take place this weekend and the new exhaust system will go on as well.

New chokes should be here tomorrow or Saturday, which is good because I have dyno time booked for Thursday.

Thinking of slicing the front fenders so I can pull them out to cover the tires.
Reply
Old May 22, 2015 | 10:22 AM
  #169  
driven-daily's Avatar
Raced Regularly
 
Joined: Jan 2015
Posts: 135
Likes: 0
From: Manchganistan, NH, USA
Was there something wrong with the old transmission? I've been looking for a spare to keep for my rx7 and miata, assuming they're interchangeable. Let me know if it's worth rebuilding and you don't actually want it.

Also, if you want me to lasercut a 'firewall' out of acrylic for you in Nashua, just let me know. I can get some pretty fancy degrees of precision.
Reply
Old May 22, 2015 | 01:02 PM
  #170  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Old transmission didn't have reverse and the shifter turret was completely fubar'd. I'll keep it to swap a miata gearset into.

How would I get measurements to you for the bulkhead?
Reply
Old May 22, 2015 | 01:05 PM
  #171  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Pull the old transmission. Swap bellhousing. Replace all seals. Swap new crossmember and mazdaspeed mounts over. Ready for installation.




swapped bellhousing





swapped crossmember





Yech, that doesn't look good.
Reply
Old May 26, 2015 | 06:37 AM
  #172  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Tranny is all swapped and new chokes for the carb came. Celebratory braps!
Reply
Old May 29, 2015 | 06:28 AM
  #173  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Bring your marshmallows because she's ready to rock
Reply
Old Jun 3, 2015 | 01:17 PM
  #174  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Couldn't find a shift **** I liked, so I made my own.




Reply
Old Jun 3, 2015 | 01:17 PM
  #175  
DaveEstey's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
iTrader: (2)
 
Joined: Jun 2012
Posts: 344
Likes: 0
From: MA
Also started the process of making the car a solid color

Reply



All times are GMT -5. The time now is 12:23 PM.