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2 Stroke Drag Bug (no, not Andrew Foldhazi)

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realfastbug

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#5 ·
links wont work for me either but found this in google search, the link doesn't work either but its a clue:



MPS Videos, MPS Downloads, MPS Pictures, MPS Podcasts, MPS Clips ...MPS Supercharged 2 Stroke 2.0L Type 2 front engine VW Beetle Old video of Steve Tuning his 2 stroke ... It was tuned by Steve Sczepanski of MPS in Toronto. ...
search.purevideo.com/video-MPS?catid=&pid=188 - Similar pages
 
realfastbug

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#7 ·
Mechanical Power Systems in Etobicoke, Ontario, Canada 416-252-0866 , I thought it was somewhere up north ;) based on every link i found being from 2006 or older and their site not working I'm thinking they are out of business. I am still super interested though...
 
T

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#8 ·
There was an entire thread devoted to this on cal-look a couple years ago... it was/is very interesting, there was a video (with sound) that was incredible. If I remeber right, the car has been parked for years, the owner/builder moved on to other things. Someone even posted a pic of the car sitting outside, behind a chainlink fence.

Anyhow it's a great concept and from the video I saw, and it worked! On the otherhand, like overhead cam conversions, reverse direction intake-exhaust tract flat fours, water cooled heads, automatic VW transmission with trans brakes, it all takes a lot of machine work, experimentation and stick-to-itiveness for those ideas to ever see the light of day and sorta work.
 
T

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#10 ·
That other thread mentioned the owner/builder had trouble joining <and resulting breaks in joints> between the cast iron cylinder to the intake and exhaust pipes... not unsurmountable issues in my book, Yamaha and Honda figured that out 50 years ago, but tough for the home builder.

If you look at the pics, he used a blower to inject the charge into the combustion chamber, piston port style without using transfer ports or needing to pressurize the crankcase.

I think the old GMC 2-stroke Diesels done the same way, weren't they? (BTW, little known fact that the first 'Jimmy' blowers used on top fuelers of the day came off these old 2-stroke GMC bus engines)
 
J

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#11 ·
Tom Simon said:
That other thread mentioned the owner/builder had trouble joining <and resulting breaks in joints> between the cast iron cylinder to the intake and exhaust pipes... not unsurmountable issues in my book, Yamaha and Honda figured that out 50 years ago, but tough for the home builder.

If you look at the pics, he used a blower to inject the charge into the combustion chamber, piston port style without using transfer ports or needing to pressurize the crankcase.

I think the old GMC 2-stroke Diesels done the same way, weren't they? (BTW, little known fact that the first 'Jimmy' blowers used on top fuelers of the day came off these old 2-stroke GMC bus engines)
Click to expand...

the old 2-stroke detroit diesels had blowers. then added a turbo . turbo to feed the blower.6v71,6v92, 8v92 and 12v92 and so on were all two stroke diesels.
 
B

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#14 ·
That car was built in two months. It was challenging and plenty of work but still got done that quick. I didn't get the weight of the car. It locked up at the top of second gear but still did a time of 10.20 in the quarter, when a piston locked in the bore.
Tom is right about the configuration. The blower pressurizes the crankcase, which is overfilled with oil, and doesn't burn oil with the fuel, which is methanol. He had 60% of the fuel running thru the Eaton roots blower to cool it, and it got super hot, even idling. The welded together cylinders gave a problem with the lower oil control ring which resulted in the smoking. Rings had to be pinned to prevent rotating and aligning with the ports. Rods are almost 7" length carillos. (look at the pic showing the rods hanging out of the case)
The blower was running at 200%, so ran as high as 26,000 rpm with the engine at 13,000 rpm.
Powerband was insane going from 60 hp to 1000 hp in 50 rpm at first, shearing off the five bolts holding on the T4 flywheel like a laser cut!
The hall effect distributor was hand made, as well as the fuel injection system, as this was before he became an Electromotive dealer.
There are four expansion chambers on the engine, of which two are visible in the vid, and the other two are inside the car out of sight.
They were made with the help of an exhaust system engineer.
 
gramazone

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#16 ·
way different set up,,the dam thing cant run without the blower,,look like they added the turbo to help it get a lil more,,tons of torque,,got two 12V92 in the shop now,,,the 2 stroke thing is catching on,,you can get 400hp out a 2.5 mercury outboard,,not bad,,compared to the house 340 at 2.5 too,,,the 2stroke engines got lots of RPM too
 
Austin Larsen

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#18 ·
gramazone said:
way different set up,,the dam thing cant run without the blower,,look like they added the turbo to help it get a lil more,,tons of torque,,got two 12V92 in the shop now,,,the 2 stroke thing is catching on,,you can get 400hp out a 2.5 mercury outboard,,not bad,,compared to the house 340 at 2.5 too,,,the 2stroke engines got lots of RPM too
Click to expand...
so why dont u make one
:turd: :turd:
 
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petevw
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