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A compilation of information about installing our GY6 engines into various buggy models
We currently offer two types of 150cc GY6 engine. One with reverse and one without. We receive a lot of calls asking about installing our engines on a variety of buggies and other vehicles. The intent of this article is to share what we know at this point about installing in various buggies. There may be more issues that aren't listed below. This page will be updated as we find out more. We haven't been able to confirm some of the information, so please take this with additional consideration and research. Use of this information is at your own risk.
Installing GY6 engine (no reverse) into a Yerf Dog GX150, Tomberlin Crossfire 150 (except 150R), Baja Dune 150, and others with 150cc HOWHIT engine
This install is very straight forward. There are no compatiblilty issues. Please read the notes in our engine listing regarding the additional features (kickstart, etc) that our engine offers. If you're interested in adding our reverse kit, you will be pleased to know that this engine comes with the longer output shaft, allowing you to simply bolt the reverse kit on without having to disassemble the engine and transmission to swap shafts. To use the engine without a reverse kit, a spacer comes with the engine so that you can use your original drive sprocket.
How-To:
No step-by-step how-to guide is available at this time.
Installing GY6 engine (no reverse) into a buggy that already has reverse (non-HOWHIT)
If your buggy comes with reverse from the factory, but isn't made by HOWHIT, you can use our no-reverse engine. You will need to transfer your existing reverse components over to the new engine.
Notes:
- If your buggy has dual drive chains, the output shaft may not be long enough to support your gearbox.
- On non-HOWHIT engines, the new kickstart feature might not be useable
as the lever may hit your frame.
How-To:
No step-by-step how-to guide is available at this time.
Installing GY6 engine with internal reverse into a Yerf Dog GX150 (150cc go-kart)
We are familiar with this swap. The BDX axle will need to be used in order to align the drive sprockets. Also a new chain tensioner (rear motor mount) bracket will need to be fabricated, along with a shifter linkage.
If you would like us to develop a kit in the future for this swap, please contact us and let us know!
Notes:
- The drive sprocket on the GY6 Engine w/ is located 2” away from the original location
- Given the new sprocket location, the BDX HD Axle must be used for proper sprocket alignment
- A reverse shifter and linkage must be fabricated for gear selection
- We carry reverse cables and reverse shifters in our online store
- A new chain tensioner must be fabricated, which we will offer for sale soon.
Items required:
How-To:
No step-by-step how-to guide is available at this time.
Installing GY6 engine with internal reverse into a Yerf Dog CUV (150cc dump-body utility vehicle)
We don't have a Yerf CUV here to test, so we aren't 100% sure on the accuracy of this info. Below are what we believe are the main points of the installation. We know that the original CUV drive sprocket is not compatible with our Internal Reverse GY6 engine. We are working on getting the correct sprocket in stock, we believe the correct sprocket comes as an original replacement part from Tomberlin, on the Crossfire 150R. We haven't been able to confirm this though.
Dimensions on the sprocket are as follows:
Spline count: 24
Spline Diameter: 1.5"
Sprocket Type: Dual Row
Sprocket Teeth Count: 16
Notes:
- The original CUV drive sprocket is not compatible with the GY6 engine with internal reverse.
- The shifter yoke is in a different location on this engine than the original (see picture). A new linkage will need to be fabricated to connect the shifter to the yoke.
- There may be an issue with where the idler sprocket mounts.
Items required:
- GY6 GY6 engine with internal reverse
- New drive sprocket (see above for dimensions)
How-To:
No step-by-step how-to guide is available at this time.
Installing GY6 engine with internal reverse into a Crossfire 150R (with reverse from the factory)
We don't know much about installing into the Crossfire 150R other than what is noted below:
Notes:
- The shifter yoke for the reverse gearcase is in a different location. A new linkage will need to be fabricated.
- A new chain tensioner (rear motor mount) will need to be fabricated.
How-To:
No step-by-step how-to guide is available at this time.
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