Water injection

JFENG

JFENG

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Yet another “out in left field “ post:

40 of years ago a dear friend had a 2800 sedan. Same guy who’s house burned down in Boulder. Anyway, he was/is one of my hero’s wrt cars and electronics. I recall he had some issues with preignition due to the low octane fuels and altitude. At one point he installed a water injection system, which were widely advertised in car magazines back then. Some suggested the fluid come from the windshield washer reservoir which contains a water/methanol mixture

I don’t recall of this helped his issues. Has anyone else ever tried water injection?

John
 
45 years ago it was necessary when installing a turbo on your 2002, using a large washer welded in the exhaust as a restrictor/wastegate, to fill the washer bottle with the -20* washer fluid (water and methanol), remove the washer pump hose from the squirters and attach it to a small tube jabbed in the air cleaner foam and pointed down the carb bore. then trigger the pump with a +2psi switch screwed into the manifold. Worked great and cut down on the amount of aluminum going out the exhaust. IIRC this was in the directions for the early 320i turbo kits too.

More recently the Snow system https://www.nitrousexpress.com/stag...lon-tubing-quick-connect-fittings-sno-210.asp has made a few improvements and works a treat if you turbo a high compression engine and don't have a budget for race gas. You also get to use "Boost Juice" instead of washer fluid.
 
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