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Ya the cis/kjet thing is something I have always thought was neat and also am glad that the vehicles I buy and work on don't have them!

by pard68 2y ago

calvinmorrison 2y ago
they're neat and they're fine-ish usually once running but they're a fricking pain to setup especially since a lot of the OEM you are supposed to have don't exist anymore. Like the book says 'oh plugin this or that' and its just... yeah no sorry The only cool thing is the wiring harnesses and everything are fully analog so like, you have fuel injection mechanically, i mean that in itself is cool. it's just a pain
- pard68 2y ago
  I wonder how similar it is to a mechanical fuel injected diesel. All my tractors are diesels and they have electric free fuel injection. My tractors are something I always marvel over, besides the starter you don't need any power. I have an old Cat diesel that doesn't even have an electric starter! Uses a small gas engine (called a pony engine) to start the large diesel engine, and the gas engine uses a pull start, very similar to a lawn mower engine.
  - calvinmorrison 2y ago
    Diesels never were carb'd - there's no venturi effect possible without vacuum. There's no spark. It's just totally different. They always have direct injection into the cylinder as far as I know. Maybe in the early 1900's they did manifold injection but I don't think so. It's just a total different concept. How the metering is done (IE How much fuel to meet load) though may have been similar, I am not sure. I 'asked a friend' on this one, since I am really unfamiliar with diesels in general.
    - pard68 2y ago
      Ya you're probably right. I think "common rail" injection is based on gas DI though. And there are some engines that are indirect injection (called IDI). I've been on the hunt for a 90s 7.3l IDI. They're gutless without a turbo, but slap a pair of turbos on and it makes a heck of a towing machine. But I don't know as much about diesels, partly because they just never break the way a gas engine will. I've rebuilt a few gas engines, diesels just seem to be made of tougher stuff.

Ya the cis/kjet thing is something I have always thought was neat and also am glad that the vehicles I buy and work on don't have them!

by pard68 2y ago

Ya the cis/kjet thing is something I have always thought was neat and also am glad that the vehicles I buy and work on don't have them!

calvinmorrison 2y ago

they're neat and they're fine-ish usually once running but they're a fricking pain to setup especially since a lot of the OEM you are supposed to have don't exist anymore. Like the book says 'oh plugin this or that' and its just... yeah no sorry The only cool thing is the wiring harnesses and everything are fully analog so like, you have fuel injection mechanically, i mean that in itself is cool. it's just a pain

pard68 2y ago
I wonder how similar it is to a mechanical fuel injected diesel. All my tractors are diesels and they have electric free fuel injection. My tractors are something I always marvel over, besides the starter you don't need any power. I have an old Cat diesel that doesn't even have an electric starter! Uses a small gas engine (called a pony engine) to start the large diesel engine, and the gas engine uses a pull start, very similar to a lawn mower engine.
- calvinmorrison 2y ago
  Diesels never were carb'd - there's no venturi effect possible without vacuum. There's no spark. It's just totally different. They always have direct injection into the cylinder as far as I know. Maybe in the early 1900's they did manifold injection but I don't think so. It's just a total different concept. How the metering is done (IE How much fuel to meet load) though may have been similar, I am not sure. I 'asked a friend' on this one, since I am really unfamiliar with diesels in general.
  - pard68 2y ago
    Ya you're probably right. I think "common rail" injection is based on gas DI though. And there are some engines that are indirect injection (called IDI). I've been on the hunt for a 90s 7.3l IDI. They're gutless without a turbo, but slap a pair of turbos on and it makes a heck of a towing machine. But I don't know as much about diesels, partly because they just never break the way a gas engine will. I've rebuilt a few gas engines, diesels just seem to be made of tougher stuff.