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Looking for a 4 cylinder manometer to sync my throttle body’s.

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Pretty easy to make one with some PVC tubing, a couple of plastic "Y" pieces, transmission fluid and some finer take-off tubing with restrictors to smooth out pulsing.

I think this one took me an hour or so.  Doesn't have reservoirs so you have to exercise caution if sync is way off.  I start off with everything closed using spring clips and carefully open the channels one at a time to prevent sucking anything into the engine.

20180616-152251.jpg


 
I have a Motion Pro Carb Synch. Paid less then $100 a few years ago. Does the job and looks good hanging on the wall in the shop. I like the pretty blue liquid. 

 

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