|
Jet size
I have a 427 side oiler stroker w/2 4160 600 holley 4 bbl. I have stock heads, MSD ign comp ratio is 10-1 with a Crower cam (16331) lift 551/565,Lob center 108, ford roller racing rockers 7-1 ratio. I sent the carbs out for a complete rebuilt and restoration to be sure everything was correct. I'm running #70 jets on primary/secondary on both carbs, #25 squirter. my plugs are a little on the dark sooty side (not oily).The car runs very strong no harsh smell when at idle and no exhaust smoke. My question is #70 jets a little much for this set up? My gas milage is almost zero, but who cares.
Thanks. I forgot to mention my exhaust tips are black sooty not oily just black carbon you can wipe off with your finger. The heads have been recently gone over, harden seats, valves, springs, guides, seals etc. |
Standard main jet for a list 1850 600 vac sec 4160 is a 66, so the carbs have been jetted up on the mains a fraction, where the PVCR should have been opened up if necessary.
The car needs to run up on a dyno to check the A/F ratios from idle to WOT. Once the figures are established, the carbs are disassembled where necessary, and a few changes can be made in one hit. Eg, idle rich, off idle rich, start of main lean etc. Gary |
4160, is't that a vacuum secondary carb?
Never mind Gaz answered my question |
| All times are GMT -7. The time now is 12:58 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: