Weed whacker build
#1
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Turns out my dad got a new weed whacker because the old one was old, leaky, and didn't have all the new add ons, so he gave it to me. I thought about adding a turbocharger to it. It IS possible on a 2-cycle engine, although the turbine will see a lot of oily exhaust. Also, a different carburetor will need to be fitted for a blow through application, so that the bowl and feed will not get pressurized, and that the venturi will see more fuel for a proper a/f ratio. I have yet to figure out where to get the turbo. I will be constructing the manifold/tubing myself. These guys were able to do it: Two stroke engine with turbo
Anyways, here is how it looked... not too bad. The carb was really gummed up and the muffler was plugged.
![Name: IMG_2781.jpg
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Teardown begins:
![Name: IMG_2783.jpg
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Size: 68.6 KB](https://www.miataturbo.net/attachments/build-threads-57/203117d1501247131-weed-whacker-build-img_2785.jpg)
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Size: 52.3 KB](https://www.miataturbo.net/attachments/build-threads-57/203118d1501247131-weed-whacker-build-img_2786.jpg)
Ported the exhaust port, as well as the intake a tad. I need to find a pressurized carburetor for a blow-through application, but in the meantime, I am just going to mess around with this one. I got all the dried 2-cycle oil out of the passageways with carb cleaner and compressed air.
![Name: IMG_2787.jpg
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Size: 48.9 KB](https://www.miataturbo.net/attachments/build-threads-57/203119d1501247131-weed-whacker-build-img_2787.jpg)
![Name: IMG_2795.jpg
Views: 97
Size: 58.5 KB](https://www.miataturbo.net/attachments/build-threads-57/203120d1501247131-weed-whacker-build-img_2795.jpg)
![Name: IMG_2798.jpg
Views: 79
Size: 65.2 KB](https://www.miataturbo.net/attachments/build-threads-57/203121d1501247131-weed-whacker-build-img_2798.jpg)
When I removed the emissions screw cover, I found there was no HI speed adjustment for the jet, just idle. Not the best of carburetors.
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Views: 112
Size: 58.9 KB](https://www.miataturbo.net/attachments/build-threads-57/203122d1501247131-weed-whacker-build-img_2811.jpg)
Polished and cleaned the muffler, changed the spark arrest.
![Name: IMG_2807.jpg
Views: 90
Size: 54.5 KB](https://www.miataturbo.net/attachments/build-threads-57/203123d1501247131-weed-whacker-build-img_2807.jpg)
The cylinder and piston had very minimal scoring which is surprising, so I just installed new rings and reassembled everything with (mostly) new gaskets. Here's how it looks now:
![Name: IMG_2816.jpg
Views: 90
Size: 101.7 KB](https://www.miataturbo.net/attachments/build-threads-57/203124d1501247131-weed-whacker-build-img_2816.jpg)
![Name: IMG_2817.jpg
Views: 110
Size: 99.0 KB](https://www.miataturbo.net/attachments/build-threads-57/203125d1501247131-weed-whacker-build-img_2817.jpg)
And here is a video:
Still trying to figure out where to get a properly sized turbine and compressor. Maybe a Smart
Anyways, here is how it looked... not too bad. The carb was really gummed up and the muffler was plugged.
![Name: IMG_2781.jpg
Views: 87
Size: 61.1 KB](https://www.miataturbo.net/attachments/build-threads-57/203115d1501247131-weed-whacker-build-img_2781.jpg)
Teardown begins:
![Name: IMG_2783.jpg
Views: 100
Size: 91.9 KB](https://www.miataturbo.net/attachments/build-threads-57/203116d1501247131-weed-whacker-build-img_2783.jpg)
![Name: IMG_2785.jpg
Views: 86
Size: 68.6 KB](https://www.miataturbo.net/attachments/build-threads-57/203117d1501247131-weed-whacker-build-img_2785.jpg)
![Name: IMG_2786.jpg
Views: 98
Size: 52.3 KB](https://www.miataturbo.net/attachments/build-threads-57/203118d1501247131-weed-whacker-build-img_2786.jpg)
Ported the exhaust port, as well as the intake a tad. I need to find a pressurized carburetor for a blow-through application, but in the meantime, I am just going to mess around with this one. I got all the dried 2-cycle oil out of the passageways with carb cleaner and compressed air.
![Name: IMG_2787.jpg
Views: 81
Size: 48.9 KB](https://www.miataturbo.net/attachments/build-threads-57/203119d1501247131-weed-whacker-build-img_2787.jpg)
![Name: IMG_2795.jpg
Views: 97
Size: 58.5 KB](https://www.miataturbo.net/attachments/build-threads-57/203120d1501247131-weed-whacker-build-img_2795.jpg)
![Name: IMG_2798.jpg
Views: 79
Size: 65.2 KB](https://www.miataturbo.net/attachments/build-threads-57/203121d1501247131-weed-whacker-build-img_2798.jpg)
When I removed the emissions screw cover, I found there was no HI speed adjustment for the jet, just idle. Not the best of carburetors.
![Name: IMG_2811.jpg
Views: 112
Size: 58.9 KB](https://www.miataturbo.net/attachments/build-threads-57/203122d1501247131-weed-whacker-build-img_2811.jpg)
Polished and cleaned the muffler, changed the spark arrest.
![Name: IMG_2807.jpg
Views: 90
Size: 54.5 KB](https://www.miataturbo.net/attachments/build-threads-57/203123d1501247131-weed-whacker-build-img_2807.jpg)
The cylinder and piston had very minimal scoring which is surprising, so I just installed new rings and reassembled everything with (mostly) new gaskets. Here's how it looks now:
![Name: IMG_2816.jpg
Views: 90
Size: 101.7 KB](https://www.miataturbo.net/attachments/build-threads-57/203124d1501247131-weed-whacker-build-img_2816.jpg)
![Name: IMG_2817.jpg
Views: 110
Size: 99.0 KB](https://www.miataturbo.net/attachments/build-threads-57/203125d1501247131-weed-whacker-build-img_2817.jpg)
And here is a video:
Still trying to figure out where to get a properly sized turbine and compressor. Maybe a Smart
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#4
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Mitsubishi TD01H or TD02H. Still way WAY to big, but its about the smallest thing you will get.Teh CHURBO!!!
#7
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I'll bet that Vespa is ear-splitting when it goes by.
Two-stroke turbo engines are pretty common in large diesels. The one I have seen first hand (425 HP in a military vehicle) was a Detroit V8 with a supercharger and a turbo in series.
Two-stroke turbo engines are pretty common in large diesels. The one I have seen first hand (425 HP in a military vehicle) was a Detroit V8 with a supercharger and a turbo in series.
#8
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Get a garrett gt12
TurboByGarrett.com - Catalog
Then add a trigger wheel, injector, and microsquirt.
TurboByGarrett.com - Catalog
Then add a trigger wheel, injector, and microsquirt.
#11
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Build a powered r/c grill. Buy a small Weber grill and set up some wheels on the legs and rig this little guy up to it. Set up a simple steering system and buy a universal r/c controller. I don't think a turbo is going to work too well, so might as well do something funny.
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