Jump to content

moritz55

Members
  • Content Count

    292
  • Joined

  • Last visited

  • Days Won

    1

Everything posted by moritz55

  1. This looks like a great car , body looks awesome. Just a thought, depending on what your thinking of doing to the car in the long term... with all the engine parts out you may want to consider getting the engine bay painted Blue to match the exterior unless you intend to convert back to original Orange. But in general the car looks really solid and great !!! Keep us posted !!! Did your '73 come with SU Flat Tops? Wonder what your plan is for carbs...
  2. Bump on this thread.... Wanted to let you all know I have extra sets of "SB" (2 sets) and "SM" (1 set) needles. They were too rich for my L24 config so am selling at a good price for anyone who uses them. I am currently using "SL" Needles with very good results... as it's close to the N-27 stock needles. Many thanks......
  3. Just wanted to let you all know I have two(2) extra sets of "SB" and "SM" needles. They were too rich for my L24 config so am selling at a good price for anyone who uses them. I am currently using "SR" Needles with very good results... will try the "SL" Needles which are the closest to N-27 stock needles at some point in the future. Many thanks......
  4. Regarding your Carbs running possibly rich.... until you get your O2 meter hookup (for each Carb?) I'll share what I did becuase I didn't want to install two O2 sensors for each SU. 1) I used Colortune 14mm plug and this technique for fine tuning Carb A/F mixture on cylinder #2 & #5 for twin SU's . At Idle and 3000 rpm ... plenty of Youtube videos on this... https://www.amazon.com/Gunson-G4074-Colortune-Single-Plug/dp/B0012MB4VE/ref=pd_sbs_263_1/139-8508085-4072005?_encoding=UTF8&pd_rd_i=B0012MB4VE&pd_rd_r=0c081181-9cc0-11e9-b500-9959ee5ce66b&pd_rd_w=6PqYJ&pd_rd_wg=arPBD&pf_rd_p=588939de-d3f8-42f1-a3d8-d556eae5797d&pf_rd_r=R68MTQD1GKPP7VZV8M3G&psc=1&refRID=R68MTQD1GKPP7VZV8M3G Video : 2) Then used this manual page (attachment) referring to page 11 "Testing Procedure" . Under load so it gave me a good indication that my "SM" needles were too rich during pickup/cruising... so now I am running "SR" needles which are closer to N-27 stock needles and the car runs great. Page 45 has the needle profiles for comparing "SM" vs "SR". I know you have Triple Carbs... but thought this approach may add to your fine tuning approach... Good luck.... SU Needles - Tuning_SU_Carburetors.pdf
  5. Hey Duffy... congrats on both getting married and testing your car.... Just one observation on your noises.... Crack Sound - maybe be a U-joint / Drive shaft or side axles ... maybe add some grease? rotate when car is on the ground check for play.. Good luck.... keep us posted....
  6. After putting in new lash pads/rockers and springs I decided to replace my marginal oiling bar. Lash pads/rockers 5 & 6 had excessive wear due to poor oiling. I went with the straight oiling bar for racing which I purchased from Larry Hassler who is on this site (larryracer240z@gmail.com or (626) 485-5767) See pics..... this bar actually adds rigidity to the cam towers, it's aluminum so it expands/contracts with the engine head nicely. Note that 3 webs on the valve cover must be cut back to allow the bar to clear it. See pic #2. I am pleased with it....
  7. What are the Needles used with this set? Especially for an L24 stock type engine config. Many thanks.....
  8. Hey .. I live in Brier Creek , Raleigh NC .... if I know of someone interested I'll send them your way. Any engine pics? Is the engine bay Stock Orange or Red? Mark ... cell: (507) 208-0140 ...
  9. View Advert NEW SU Needle Sets: SM, SB, & SP profiles For Sale - $20 or Make An Offer? For SALE , NEW SU Needles I purchased from SU Midel: http://www.sumidel.com/shop/category/-0100-fixed .... I purchased a variety of needle tapers to optimize ZTherapy SU's in my 240z L24 setup - "SM's" were too rich for my engine so I dialed in the carbs nicely so far using "SR" profile needles. I included the Taper profiles(attachment #1) along with the tuning method (Attachment #2, page 11) I used for optimizing efficiency with performance(I also used Colortune but did not have an AFR for real-time mixture readings). I am very happy with the "SR" needle right now as it's just slightly richer than N-27 stock.... the other one actually closer to stock N-27 is the "SL" which I am also keeping. Therefore , For Sale are 6 sets of NEW SU Needles : Make an Offer that includes shipping within the Continental US. (Discount on buying multiple sets). ........................ Any interest text me: 507-208-0140 , Mark. "SA" Needles: One(1) set .... Total of 2 Needles SOLD "SP" Needles: One(1) set .... Total of 2 Needles (New these sell for $27.50 each) "SM" Needles: Two(2) sets ... Total of 4 Needles "SB" Needles: Two(2) sets ... Total of 4 Needles ... SU Needle profiles vs N27 Stock.pdf SU Needles - Tuning_SU_Carburetors.pdf Advertiser moritz55 Date 06/28/2019 Price $20.00 Category Parts for Sale  
  10. Time Left: 2 months and 7 days

    • FOR SALE
    • NEW

    For SALE , NEW SU Needles I purchased from SU Midel: http://www.sumidel.com/shop/category/-0100-fixed .... I purchased a variety of needle tapers to optimize ZTherapy SU's in my 240z L24 setup - "SM's" were too rich for my engine so I dialed in the carbs nicely so far using "SR" profile needles. I included the Taper profiles(attachment #1) along with the tuning method (Attachment #2, page 11) I used for optimizing efficiency with performance(I also used Colortune but did not have an AFR for real-time mixture readings). I am very happy with the "SR" needle right now as it's just slightly richer than N-27 stock.... the other one actually closer to stock N-27 is the "SL" which I am also keeping. Therefore , For Sale are 6 sets of NEW SU Needles : Make an Offer that includes shipping within the Continental US. (Discount on buying multiple sets). ........................ Any interest text me: 507-208-0140 , Mark. "SA" Needles: One(1) set .... Total of 2 Needles SOLD "SP" Needles: One(1) set .... Total of 2 Needles (New these sell for $27.50 each) "SM" Needles: Two(2) sets One(1) set ... Total of 4 Needles 2 Needles "SB" Needles: Two(2) sets ... Total of 4 Needles ... SU Needle profiles vs N27 Stock.pdf SU Needles - Tuning_SU_Carburetors.pdf

    $20.00

    Raleigh - US

  11. Sweet Wheee (Mark), thanks for the comment!! Would love to see pics of them when you can send them..... Essentially we have 40yrs of technology difference between the 370z and 240z.... but being gated they both put smiles on our faces!!!!! Take care... Mark
  12. Many thanks for sharing! Great info to always check these fuel bowl/nozzle hoses when I pull the Airfilter backer plate. I am very much like you as I often fiddle to assure the engine components are always working to spec so I can head off a problem before it fails completely. Started to have bucking/jerking when accelerating or going up hills, a loss of power problem. This occurred after installing ZTherapy SU's and tuned them with Colortune also. Thought it was my SU's and needed to tune/tweak them. Finally after it finally stalled completely and would fire sporadically but not run I figured electrical problem misfiring? Got it back to my garage I thought to check the rear fuel bowl for the heck of it since it was easy... and sure enough it was almost completely empty. Front fuel bowl was topped off pretty close to normal. Replaced the mechanical pump and then added an electric pump for insurance.. my 4BBL Holley was more forgiving when the mechanical pump was marginal ... my SUs were not! Thanks again for sharing....
  13. Nothing but Gated Garaged Vehicles !!! The thrill of driving stick always puts a huge grin on my face .... 1973 240z (Viper Dark Green Pearl), 2005 Ferrari F430 (Rubino Micalizzato-Burgundy Pearl), 2002 Ferrari F360 (Rossa Corsa-Red), 1991 Toyota MR2 Turbo (Red), 2010 370z (Black Cherry).
  14. Ah..... thanks. My initial thought the Right Lever was for the Air Box flap (close it for cold startup)..... but never thought it was for the gas pedal. Thanks!
  15. My curiosity is getting the best of me so I decided to ask the experts here.... maybe I am brain dead and missed something, I have searched on this site and cannot find any explanation. Q1) What is the Right Lever for on this 240z choke assembly? Q2) Is it specific to a Year? Many thanks...
  16. Polishing up the new end makes sense, only the metal and stay away from the plastic ball. Be careful to not take off the plating... Then re-assembling the ball end with the threads should be easy. Just be sure as previously stated to note the Center-to-Center ball distance from your original rod. Once cleaned the ball can be easily screwed onto your good shaft, just clean your threads on the shaft before attaching. The nut on your original rod is used to lock the threaded ball end at the correct length and orientation. There should not be any significant force torquing the threaded ball end on. Good luck...
  17. Patcon... here's what I found in the 1971 240z FSM ..... Static pressure tested at Carburetor Input running engine at various speed : 3.4psi - 4.3psi Capacity Test at 1000rpm : 1600cc/min ==> 0.423gal/min ==> 25.4gal/hr .. or 3.71pts/min ==> 0.464gal/min ==> 27.8gal/hr ... I guess .... 30gph is sufficient for our SU's.... based on the FSM. 1971 FSM 240z Fuel Pump Test.pdf
  18. True...... 👍👍👍👍👍👍👍👍👍 .... but I would hope the higher flowrate keeps the fuel bowls in short bursts full when accelerating.
  19. My mechanic says that although PSI is important to maintain the proper fuel system pressure/response, the FlowRate is the key parameter in filling the bowls. 30gph is the flow rate rate for both the Airtex 8016S (2.5-4.5psi) and Airtex 8012S (5-9psi) pumps which works nicely for SU's and Weber DGVs . Airtexs are very quite based on feedback here and external reviews. For your triple Mikuni's .. try to find out what FlowRate is needed and use a lower psi pump that fulfills that. From above... the Nismo 17010-A7601 puts out 1.3L/min ==> 0.3434gal/min or 20.6gph. This seems way to low of a flowrate.... you need at least 30gph or higher... The Airtex 8012 will be better, but not sure it satisfies the triple Mikuni's needs..
  20. Thanks MMaras for input.... I'll go with the 2.5psi-4.5psi Airtex 8016S ... it still has the 30gph flow rate ... so it makes sense!
  21. The Airtex 8012S is rated 5-9psi at 30gph.... shouldn't we use Airtex 8016S which is rated 2.5psi - 4.5psi at 30gph ? Just curious ? I am looking to add one to supplement my Mechanical pump as backup... Many thanks.....
  22. View Advert Nikki Fuel Pump Parts - Mechanical Fuel Pump Spectra SP1173MP fits 75-77 Nissan 710 2.0L-L4 NEW Mechanical Fuel Pump, SP1173MP ..... 3.5psi - 4.5psi For Sale is a New Fuel Pump, SP1173MP. I bought several of these to rebuild my Nikki Stock fuel pump as written up on this site. I have enough spare parts now in case the Nikki fails again. This fits 1975-77 Datsun/Nissan 710 2.0L-L4 engines or equivalents. Thus it's for sale at a nice discount including shipping to 48 continental states. Thank you! If interested send text to Mark: 507-208-0140 Advertiser moritz55 Date 05/21/2019 Price $28.00 Category Parts for Sale  
  23. This advert is COMPLETED!

    • FOR SALE
    • NEW

    NEW Mechanical Fuel Pump, SP1173MP ..... 3.5psi - 4.5psi For Sale is a New Fuel Pump, SP1173MP. I bought several of these to rebuild my Nikki Stock fuel pump as written up on this site. I have enough spare parts now in case the Nikki fails again. This fits 1975-77 Datsun/Nissan 710 2.0L-L4 engines or equivalents. Thus it's for sale at a nice discount including shipping to 48 continental states. Thank you! If interested send text to Mark: 507-208-0140

    $28.00

  24. They sell for $60 on eBay..... your choice. They also work but are not original looking.
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.