Sohc swap please help!

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01-19-2014, 10:11 PM

#21

miata2fast

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I have this weed eater that has a 4 cycle motor on it. When I start it up, I marvel at how it has a low throaty rumble when I start it. The thing has surprisingly good throttle response when you pull the trigger too.

But you know what? It is still a ******* weed eater.

01-22-2014, 10:57 PM

#22

Mx5Derek

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Hahaha this is why i joined this site. Thank you guys.

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01-23-2014, 01:35 AM

#23

scenturion

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Quote:

Originally Posted by miata2fast

Have you considered swapping the head from the weed eater onto your Miata?

01-23-2014, 01:55 AM

#24

buffon01

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In for...whatever.

01-23-2014, 07:05 PM

#25

laguna96

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Weed eater swap it. Nobody's done it before, **** it.

01-23-2014, 07:11 PM

#26

concealer404

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Quote:

Originally Posted by Mx5Derek

Ive never seen anyone do anything like it. I was very impressed with what can be done to the sohc motors in hondas. So opposed to building another turbo dohc motor i wanna frankenstein some stuff to be the first. Everyones seen the v8 miatas an everyone knows a boosted dohc is fast but i doubt if anyones seen a boosted sohc mazda motor. Just the noise that little sohc will make is gonna be rad.

Nope, you're right. I've never seen a boosted SOHC Mazda motor.

Also: *****.

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01-23-2014, 07:27 PM

#27

laguna96

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01-23-2014, 07:39 PM

#28

Full_Tilt_Boogie

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Quote:

Originally Posted by foxyroadster

most of the Frankenstein honda motors go from sohc to dohc or non-vtec to vtec, possibly lower or increase compression ratio without machining.. This just gets you less flow..So any other reasons?

I can only think of one Honda setup where you put a DOHC head on a SOHC block and that is when you put an H22 head on an F22/F23 block. This gives you more power stock for stock, but in overall potential the F22 head is far superior because it has a better combustion chamber and more meat in the head for larger valves and ports.
People frequently confuse aggressive cam profiles with a head being good. VTEC is just a cam profile. A non-VTEC head can do the same thing, it will just get bad gas mileage and not idle very smoothly.

There is not much inherently wrong with SOHC other than a lack of ajustability in the cam profiles and the fact that the spark-plugs cannot be perfectly centered and vertical.

2 valves per cylinder is what makes this a lame head.

I would personally love to experiment with the 16v sohc head in a Miata.

01-23-2014, 10:36 PM

#29

chicksdigmiatas

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Too late, someone has already done a 3 cylinder SOHC. He is more different and rad than you. Now you either need a 2 cyl SOHC, 2 stroke, or maybe you could put a a V4? All super rad and different.

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01-23-2014, 11:10 PM

#30

Full_Tilt_Boogie

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How about a big 2-cycle boat engine? **** would scream, yo.

01-23-2014, 11:39 PM

#31

ReplaceDisplace

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Sometimes there's a very very good reason why no one has never done something before.....

01-24-2014, 01:37 AM

#32

EO2K

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Where is that dude that put the 2 stroke snowmobile engine in his Lemons Miata? I believe it had a pull start sticking out from the "hood"

Edit: I assume it was 2 stroke based on the smoke plume and exhaust note.

01-24-2014, 01:54 AM

#33

triple88a

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Someones got to make a giant 1 or 2 cylinder engine, no? That will be very rad.

A square looking motor would be sick under the miata hood.

01-24-2014, 03:00 AM

#34

chicksdigmiatas

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http://www.caranddriver.com/photos-1...e-photo-502495

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01-24-2014, 05:17 AM

#35

NiklasFalk

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Quote:

Originally Posted by EO2K

Where is that dude that put the 2 stroke snowmobile engine in his Lemons Miata? I believe it had a pull start sticking out from the "hood"

Edit: I assume it was 2 stroke based on the smoke plume and exhaust note.

You can still be different

But fitting the exhaust would be ehm... challenging.

Nothing wrong with frankenengines, but make sure it's fun for you own sake and not for others.