Quote:
Originally Posted by enkeivette
Installed the 29 IFRs over the stock 36s. Cruise around town now is right around 14.6:1, idle is right around 14.8:1. Cruise on the highway has gone up to mid 13s from mid 12s. I'm not sure how I can lean out the highway cruise without leaning out the idle/ low speed cruise. I might just have to live with the mid 13s in 6th gear.
Drilled some main jets with a 7/64ths drill (close to 91 size) from the 88s that were installed and the AFR at WOT actually got a few tenths leaner. The hole is larger than the 88 hole but I must have not drilled it clean which prob causes it to flow less. I think I'll try 80s and 94s next time.
The smaller IFRs actually make up somewhat for the huge primary main jets at part throttle. Really made acceleration smoother and leaner.
Also, doing a high speed run my bowls ran out of fuel... I think my mech fuel pump might have to retire. I'm going to up the level on the floats for now for a cheap fix.
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When drilling jets bevel the top and bottom opening for cleaner flow.