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Old 12-04-2016, 06:24 PM   #1
flint_jeff
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M21 Feasibility Question

I recently inherited an M21 diesel motor. I'm curious about something that I have not been able to determine from numerous searches.

Would it be possible to fit a 200 or 731 head to the M21 block with custom pistons to convert this motor to gasoline operation?

I am not suggesting it would be a smart thing to do versus other options or that I would pursue this but was just curious if it is technically feasible.
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Old 12-08-2016, 02:29 PM   #2
estoguy
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I wouldn't know, but from my general knowledge, conversions don't work out well. Look at the Gm diesels that were converted from gasoline power in the late 70s. They were shit.

Personally, I think it would be a fool's errand.
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Old 12-13-2016, 11:12 AM   #3
Kershaw
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the motor is far more valuable than a regular m20. Just sell it for $500 and buy a regular m20b25 for $250.
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Old 12-13-2016, 03:14 PM   #4
ThatOneEuroE30
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Quote:
Originally Posted by Kershaw View Post
the motor is far more valuable than a regular m20. Just sell it for $500 and buy a regular m20b25 for $250.


If your selling an m21 for 500. I'll fucking take it haha.


No a gas head cannot be put on a diesel engine
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Old 12-14-2016, 02:43 PM   #5
raudonis
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Google up pictures of the heads and blocks and look if oil and coolant passages even line up. They do not.
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Old 12-16-2016, 09:38 AM   #6
slammin.e28
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Quote:
Originally Posted by ThatOneEuroE30 View Post
If your selling an m21 for 500. I'll fucking take it haha.


No a gas head cannot be put on a diesel engine
Seconds!

I kinda wanna pop an M21 into one of the Rovers....
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