Vehicle Owner

Member ID: time_machine

Location: QC, PH

Vehicle Info

1965 Datsun Roadster

Bought: Jan, 2006

Bragging Rights

  • 1/4 Mile0 sec @ -1 mph
  • 0-600sec
  • Top Speed-1mph
  • HP-1
  • Weight-1lbs

Major Upgrades

  • turbo
  • nitrous
  • bore increase
  • port and polish
  • supercharger
  • extrude honed
  • stroke increase
  • engine swap

Modifications

Performance Parts

  • Custom Intake 
  • Custom Exhaust 
  • NGK Ignition 
  • Custom Header 

Ratings

    • Currently 4.2/5 Stars.

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Last updated: Nov 28, 2009

Hits: 8,598

steven’s Datsun Roadster
“Fairlady”

  • Currently 4.2358208955223 /5 Stars.
164 guestbook comments

Tuning Updates : Air-Fuel Mixture


Cleaning the spark plugs early in the morning. I inspected the plugs for signs of fouling, but all the plugs showed clean burning.

time_machine's 1965 Datsun Roadster

 

time_machine's 1965 Datsun Roadster

The spark plugs are still in good condition after repeated high engine revs. Modified the tip for better spark and burn. I'm currently looking for gold plated tipped contact points. I saw one a few weeks ago. It might enhance the spark for a better burn. I'm also looking for a new old stock Bosch ignition coil to replace the one I'm using in the roadster...quite rare nowadays.

time_machine's 1965 Datsun Roadster

Tan to light brown color on the plugs indicating a balanced air-fuel mixture on the Mikuni PHH40 Type T's. I noticed an improvement in torque and acceleration.

Plans:

1. Repipe exhaust system - 2 inch diameter, stainless steel mandrel bent tubing

2. Stainless steel free flow resonator

3. Stainless steel flex pipe

4. Stainless steel megaphone tip

5. Custom aluminum heat shield for twin Mikuni carburetors

6. Re-jet and re-balance PHH40 Type T Mikuni carburetors

 

Stainless Steel Exhaust System Project - Custom Built by Titan Works

time_machine's 1965 Datsun Roadster

Stainless steel Flexible Pipe installed, note the stainless steel mounting bracket, TIG weld quality is superior. Stainless piping is 1 3/4" from flex pipe to resonator and 2" from resonator to exhaust tip

time_machine's 1965 Datsun Roadster

Custom built stainless steel 20" x 6" x 3" free flow resonator

time_machine's 1965 Datsun Roadster

Custom built stainless steel megaphone tip 2" (inlet) to 2.5" (outlet) being fitted

time_machine's 1965 Datsun Roadster

Finally finished! Looks and sounds great! Low frequency rumble at idle is solid...unlike those that sound like a tin can! Driving experience is definitely much more exciting! Better still, torque didn't decrease at the low rpm range. Next is to have the carburetors re-jetted! Now, I've got to schedule a tuning session with twin carb guru Fil Gulfin!

time_machine's 1965 Datsun Roadster

I recently installed a new accelerator cable with a thicker stainless steel strand for better durability during racing. I'm planning to go to Batangas Race Circuit in May to tune the engine. Custom made steel brackets.

time_machine's 1965 Datsun Roadster

Update photo of the engine with the new accelerator cable installed. (April, 2009) Been running the engine up to 6,000 rpm. Acceleration is just awesome even when the twin carbs haven't been tuned yet. Hopefully, by this month I'll be able to dial it in. The exhaust note and induction noise are really something! It's freakin' addictive!

Also just bought (May,2009) Goodyear Eagle NCT5 (185/70/R14) tires to replace the old and cracking Dunlop rear tires.

time_machine's 1965 Datsun Roadster

I finally received the 52.5 Pilot Jets from Rodger of RM Carburetors in Australia. He even added Mikuni stickers...which will be a nice touch on my racing helmet (planning on entering the vintage racing series)! I can't wait to have the twin carbs tweaked by tuning guru Fil Gulfin!

time_machine's 1965 Datsun Roadster

Replaced the old radiator cap with a Raybrig cap with a pressure release valve. Looks much better as well.

time_machine's 1965 Datsun Roadster

Finally, tuning begins!

time_machine's 1965 Datsun Roadster

Finally, I had the Mikuni carburetors and engine tuned at Fil Gulfin's shop! The difference is incredible! Throttle response is crisp, acceleration is so much improved, torque is evenly spread over the power band, and the induction noise is such an awesome sound to hear!

time_machine's 1965 Datsun Roadster

The pilot jets are now 52.5 and the main air jets are 170. The pilot screws have been replaced with the correct ones and the leak has been fixed by replacing the diaphragm cover at the bottom of the left carburetor.

 

Here's a short film I made about a Sunday fun run with the Fairlady:

http://www.youtube.com/watch?v=5Pky9u4IErE

 

New Goodies from eBay!

time_machines 1965 Datsun Roadster

New filler neck grommet

time_machines 1965 Datsun Roadster

New Nissan shift boot to keep those hot exhaust gases out! Finally!

 

Another Gift from Dave (East Coast Roadster)

time_machines 1965 Datsun Roadster

New Carolprene spark plug wires - OEM look, taylored to fit the roadster's engine perfectly. I can't wait to install these! Thanks so much, Dave!

 

Guestbook

Displaying entries 1-5 of 164

smykisen  

Posted by: smykisen

11/27/2009 08:26AM

NICE RIDE 5 *****'s NICE PICS ALSO, CHECK OUT MY RIDES, I HAVE A FEW!!! LATER

escaperoute  

Posted by: escaperoute

11/25/2009 12:19PM

Sharp ride! 5 stars

zippy67roadster  

Posted by: zippy67roadster

11/23/2009 10:25AM

Sweet roadster. Love the red dash! take a look at my newly finished project and rate it!

laspiedras  

Posted by: laspiedras

11/18/2009 08:39AM

Sweet Lookin Ride, luv the rims very clean nice job. Def. 5***** for sure.

R_Weezy  

Posted by: R_Weezy

11/12/2009 11:05AM

bad ass

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Vehicle Owner

Member ID: time_machine

Location: QC, PH