Gmoto Posted April 22, 2022 Report Share Posted April 22, 2022 It was suggested that I come here to seek advice for jetting because you all have more experience with Mikuni PHH side draft carbs. I have a PHH 44 S5. The car isn't a Datsun, but is a '76 California spec MG Midget with a stock 1500cc engine. This carb hasn't been on the car yet. Currently set up with: Venturi: 34 Main jet: 150 Main air jet: 200 Pilot jet: 57.5 Pump nozzle: 40 Thanks, Gregg Quote Link to comment
Stoffregen Motorsports Posted April 25, 2022 Report Share Posted April 25, 2022 It has dual carbs? Might be a bit much for a 1500. Jetting sounds about right, but it really depends on many factors. How does it run? Quote Link to comment
Gmoto Posted April 28, 2022 Author Report Share Posted April 28, 2022 Just one carb. I haven't installed it yet, so no idea on how it runs. I need to replace the exhaust system as well at the same time I install the carb and intake. The exhaust manifold is cracked. Gonna use a Maniflow system from the UK. 1 Quote Link to comment
Stoffregen Motorsports Posted May 3, 2022 Report Share Posted May 3, 2022 The jetting sounds like stock baseline Mikuni jetting. I'd try it first and see how it runs. I have a single PHH44 on my 1275 Sprite and it runs great. I could check that jetting and let you know what it is. I've got a built motor though with a huge cam and a giant header. Might be an apples to oranges comparison. Quote Link to comment
Gmoto Posted May 3, 2022 Author Report Share Posted May 3, 2022 Yes, it is baseline jetting. I'm curious what your jetting is, but it might mean nothing since the motors are very different. 1 Quote Link to comment
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