Hello All,
My name is John aka Spider, live in northern Utah and am what the military calls the FNG (NG stands for new guy). I just bought an 88 samurai bone stock rag top. It has 124K miles and very little rust, rocker panels are about gone. I bought this sammi because I love the looks and couldn't afford the gas bills for my 94 C1500 any more. I travel 88mi round trip to work and I have a real problem with maintaining 75 mph on the highway and am getting only 21 to 24 mpg, 24 mpg if I keep it around 55 mph. I spent about 3 days reading thru all the tech posts on Zukiworld and Zukikrawler and figured that timing, vacuum and idle speed were pretty critical on these little engines. I finally got it set at 10 Deg BTDC and 800 rpm at idle. I found no vacuum leaks using the carb spray method. New AC rapid fire plugs gaped at .030, new wires, cap, and rotor.  Not a noticeable difference so I'm look for some bolt on's that will help out in both MPG and power. Once temps get out of the single digits I will go out and do a compression test. I'm an aircraft mechanic so know my way around a tool box but only have a compresser and an open driveway to work in. An engine swap or welding up a new exhaust is beyond my capabilities but other than than that I can do it. Any help would be great.

I have also been looking thru Google for a place to get parts and have found very little. Help here would also be great.

Spider

I have a chevy metro with the suzuki 1.0 liter engine. 48mpg. One of the biggest improvements I did was install a 3tech 10 degree cam gear and max out the ignition timming and fully inflating my tires. Wished I knew more to help with your jeep. If you just want fuel economy look for a metro xfior first generation insight.

My new project is a 95 sidekick, my car is the 99 metro and 2010 insight. The sidekick gets 30mpg my insight is best 79 worse 44mpg, it really depends on how you drive it.

Thanks for the info.

Spider

Spider, are you looking for fuel economy or power? Its hard to get both as one effects the other. I know many truck owners who just drive back n forth to work are changing the final drive to a higher ratioa 2 to 1 vs 4 to 1 so the engine runs at a lower rpms. This removes some towing n hauling capacity.

Another idea in the colder weather is to block the grill if you can monitor the water temperature. Accelerate slowly and try to stay within the speed limits.