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Engine Specific Info and Questions => IDI Engine => Topic started by: ORCoaster on May 04, 2013, 09:27:47 pm
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Could you put gas engine pistons in a diesel and have it run a lower compression. Seems like the dish in the top would reduce the overall volume slightly and one could run a bit of advance or more PSI to off set that.
Any wild Ideas out there? Other than this one.
DAS
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it wont work...
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It might work if you spun the motor at 5000 rpm long enough for it to get hot enough to start. It might run crappily. They ran old JD gas tractor motors on kerosene when they got good and hot, and through a carb no less.
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wont the top design of the piston not be suited for our specific flame travel?
and they might be weak also...
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If you use the gas head too, awesomeness can happen.
https://www.youtube.com/watch?v=rXPyYzt9N1E
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Questioned answered. 1000 plus hp and wind it up to 10K all I need it a different head, gas pistons, turbo Oh and an Audi.
Food for thought.
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people used to take a diesel bottom end (complete)
put a big-valve solid lifter head on it, and spray as much nos to it as it could possibly handle!!
of course, it wont be a diesel anymore after you drop a gasser head on it..
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Well, it has been done before, but who knows why! ;D
Here is a classic from a few years ago
http://www.vwdiesel.net/forum/index.php?topic=21296.0 (http://www.vwdiesel.net/forum/index.php?topic=21296.0)
Please read and weep! ::)
or laugh 'til you puke
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That's pretty funny..
Random bit I recall, the domestic guys using GM v8 diesel blocks to build some very stout gas motors years ago.
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That's pretty funny..
Random bit I recall, the domestic guys using GM v8 diesel blocks to build some very stout gas motors years ago.
yup.. they used to use the 5.7 "DX" block, fitted with olds 350 heads, and an ignition system..
AFAIK, all the LATER "DX" blocks had roller cams, as well as all 6/.2/6.5 engines..
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Not stout enough for diesel use, but apparently makes a great gas race engine... Who would have thought?
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Not stout enough for diesel use, but apparently makes a great gas race engine... Who would have thought?
no siht, right?
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I'd like to have an old GM wagon with a diesel 350, there's a number of folks that have worked out what they need to survive
apparently. I've met just as many people that say VW and Volvo diesels constantly blow headgaskets and are junk as I have
saying the old GM auto diesels were junk, so I'm reserving judgement till I stumble across one. Also, I'm a sucker.
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I'd like to have an old GM wagon with a diesel 350, there's a number of folks that have worked out what they need to survive
apparently. I've met just as many people that say VW and Volvo diesels constantly blow headgaskets and are junk as I have
saying the old GM auto diesels were junk, so I'm reserving judgement till I stumble across one. Also, I'm a sucker.
im going from personal experience here, i worked on, and drove a 1983 oldsmodiesel cutlass cruiser (wagon) and it was not a bad car at all..
what kills those engines, is the lack of fuel filtration.. i installed a R12S filter on it upon getting the injection pump rebuilt.. the flex ring was going to hell, and it was leaking bad..
anyways, i got almost 25mpg with that big boat.. it didnt have ALOT of power, but it would most certainly get out of the way.. wasnt the SLOWEST car ive driven..
i had installed bosch duraterm glow plugs as well as a new timer and GP relay.. the car would start every time.. foot @ 1/4 throttle, let the glows go off, then hit the key.. it would start about as soon as the flywheel engaged the ring gear on the flywheel..
car was single owner tho, with only 87k on the clock, and had been maintained fairly well, from what i could tell..
had KYB gas-a-just shocks all the way around, and damn, that took the "boat" feel all but away..
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I miss my 9C1 Caprice, and might have to build up a diesel B body sometime.
And I'm kinda pissed my new 96 Cummins isn't any faster than the 6.2 suburban :-\
It does have overdrive, so at least it's quieter on the highway I guess.
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Very cool.
In semi-related news, I saw/heard a running Volvo diesel for the first time ever yesterday.
Ever as in the last fifteen years that I've known they existed.
Was neat. :)
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Very cool.
In semi-related news, I saw/heard a running Volvo diesel for the first time ever yesterday.
Ever as in the last fifteen years that I've known they existed.
Was neat. :)
they sound alot like the 5 cylinder Audi diesels..
neat cars, arent they?
ive heard both 240D, and 740TD engines in the last year..
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I think I'd be really happy with a 240 M46 diesel wagon, that wasn't ragged to death and had a fighting chance under my care still.
Easier said than done though.
Or a TDI swap. Which has been done with good results.
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I think I'd be really happy with a 240 M46 diesel wagon, that wasn't ragged to death and had a fighting chance under my care still.
Easier said than done though.
Or a TDI swap. Which has been done with good results.
TDI swap? into a volvo? using a 5 cyl?
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VW TDI in a 240, kid on turbobricks few years ago, mildly warmed TDI, end result was redblock turbo power and mid 30's MPG.
He drove it across Mexico or something nutty last I heard.
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At one time last year I owned a Mk2 Jetta TD, and Audi 5000TD, and a 245 Volvo diesel, all at the same time. The 5grand is the only one that I miss.
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VW TDI in a 240, kid on turbobricks few years ago, mildly warmed TDI, end result was redblock turbo power and mid 30's MPG.
He drove it across Mexico or something nutty last I heard.
The guy in question is my friend Josh who has a fabrication business here, I don't know if I'd call him a kid, he's in his 30s and married, lol, but yeah, he has the 240 wagon still, he drives it every day, and has put a lot of miles on it, yes, he drove it to the end of the Baja peninsula and back, and he just had the car painted, it's nice.
He's also put a Volvo diesel engine (well, a D24T so a 6 cylinder Volkswagen) in a Land Rover. He's really made a career out of doing these kind of swaps, does a lot of things with Honda engines and such, but not usually diesel. He's honestly a good guy who does very professional work. The Land Rover apparently used the same automatic transmission as the Volvo diesel but required a lot of body work to make it fit, the Volvo was fairly straightforward I think, he used the adapter plate intended for Suzuki Samurai swaps to couple the TDI to a Toyota RWD manual transmission and installed that in the Volvo.
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In Europe, some have done the 5 cyl 2.5 TDI in the RWD Volvo cars too.
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It was nice work, there were still pics in a thread on tbricks last I looked. It's one of my long term plans.
Sent from my SCH-I535 using Tapatalk 2
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High compression gas pistons with a small decking or shaving the head gets around 17:1, and they run fine. Run better with more fuel and air.
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17 : 1 isn't what I was thinking when I brainiaced this one. I was more of the mind of 22 or slightly less as our normal is so high to begin with. With all the recent discussion of tweaking timing and delayed injection for different purposes I had the idea of gas pistons due to the different head design.
Not planning on doing this one just thinking out loud. Been a good discussion on several topics here. We are so bad about off topic stuff. Do we just lack focus?
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Modello says diesels run a lot harder with a small combustion chamber.
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I've worked on tons of gm6.5 engines. Not so impressed. Cracked heads cracked blocks cracked cranks. I guess they say the 6.2 was a little tougher but totally gutless. I did rebuild a 350 diesel that had like 40 k on it and it was whooped out. IMO the gm diesels werent so good. Wether it was the idiots who didnt know diesels blowing them up or a lame design id lean more toward they were a lame design
I think the 350 was rated around 95 or so hp. Thats alotta iron for the hp that my moped can make.