I have to wonder how much the crankcase pressure will add to the tensile loading, applying force to the bottom of the piston, and what about those piston cooling oil jets that shoot a load of oil into the pistons interior (more weight). There might be a Helmholtz effect created by the piston as...
My bad, I should have wrote " pre-ignition contributes to valve recession through the excess heat transferred to the valve and valve seat insert, which may be already running on the ragged edge".
Sierra4000, running too much lpg at low to middling revs can result in the mixture burning as it exits the exhaust valve, as can an advance curve that is set for unleaded fuel, it's easy to overfuel while using lpg as power can increase as the mixture gets overly rich in some circumstances...
Best economy is to have windows up and air-con off, if you're girlfriend complains about the excessively hot cabin try wetting her T-shirt with water. (be careful with this method, as often the following activities can result in an unwanted pregnancy which totally kills economy).
I believe that these Toyota chargers are not rebuildable, so coating the rotors is going to be difficult!
As Gibson said, water/meth injection could be the best way to go.
I'm not familiar with methanol fuel systems, but have injected a water/oil mix into my turbo diesel engine. Aside from the harder starting issues the only problem I came across was a short fuel filter life, as some moisture was absorbed by the paper filter media causing the fibres to swell up...
It seems that the refrigerated charge cooling system is detracting from further possible combustion temp. reductions by limiting the amount of water that can be injected pre manifold. You could consider raising the temp of the refrigerated cooler to somewhere above freezing which would make...
Are you running propane as a warm up fuel? I would think that cold starting would be much harder with water mixed into the fuel, maybe a bottle of nitrous would be an easier solution!
The book is a bit ancient, but lpg and propane haven't changed much as far as I know! If the O.P. were to specify the operational goals then more could be added to the above, from memory Franz has a bit of experience in this area....Probably the most exciting (for me) tech advance concerning lpg...
The octane rating of the inducted lpg/air mix goes down with A. high intake swirl and B. high intake temps. Ignition lead should be reduced to 25* total centrifugal + whatever vacuum advance the engine can run with without encountering pre-ignition. There is a book available on tuning an engine...
An interesting idea gazzz, here's a link to another similar experiment- motorcycle carbs mounted onto a ford v8 manifold. Unfortunately despite his persistence there wasn't a gain in power,but lots of headaches with jetting etc.-...
Back in the 90s when I worked on sheep stations out in the boondocks we had to hand crank large single cylinder engines at the start of the working day, everyday. Most (even the diesels) were easy to get going, flick on the decompressor, crank the handle for about 30 seconds (these engines had...
I'm not aware of any specialized books other than the linked one above, but have come across numerous magazine articles over the last 30 years, more info is available via google. Be aware that some countries fuel suppliers(like Australia's for example) spike their propane with butane lowering...
I am a bit inarticulate Hemi, the linked book explains the process much better as you do. I used the term "according to the author" after mentioning inlet gas velocity and its effect on combustion/pre-ignition to avoid counter arguments from folk who can't get their mind around the concept...
There are many things to consider when running propane, I had a couple of performance propane books when I was younger, here's a good guide to building an engine for propane fuel...
