Are the CSC TT250 and Hawk Engines / Swing Arms Interchangeable?
 

Hey everyone. It's been awhile. At the end of last winter I may have fried the 2018 CSC TT250 engine. I was doing donuts in the snow and the engine started knocking really loud. Not exactly sure what I did. The bike has sat in the back of my garage for the last year and I'm finally getting around to working on it.

Not sure what's up with the motor, was thinking an engine swap might be easier than a a tear down and rebuild. I also need to replace the swing arm. After checking out the CSC website a new engine and swing arm would cost me about the same as a new Hawk.

Looking at the bikes they look identical. I then priced a Hawk replacement engine and they're like half the price of a CSC engine. Has anyone replaced the CSC engine with a Hawk engine?

If so will the wiring harness just plug right in?
Motor mounts line up?
Carb intake line up?
Would I need to make a ton of modifications?

Looking at images on the internet they look almost identical. Replacing the CSC parts with Hawk parts would save me a fortune!

It seems the Hawk swing arm is also $200 cheaper than the CSC. Anyone swap out swing arms?

My final consideration on this is that I live in NY and have heard Hawks can be difficult to register. I was thinking maybe buy a new Hawk, and transfer everything over to the CSC frame. Registrtion goes by VIN # and if the parts are interchangeable I could just use the CSC frame if I couldn't get the Hawk registered and plated here. Plus I'd have a good parts bike with everything left over from the old CSC.

I'd appreciate any thoughts. I'd really like to buy the $400 Hawk engine and the $90 swing arm and be done with it.

Thanks for the help. This forum is always appreciated and has been a life saver in the past.

:thanks:

Sorry it was $495 on Ebay.

https://www.ebay.com/itm/RPS-Hawk-25...oAAOSwMFVfUnds

TXPowerSports had them for $499 also.

Both places are still over $400 cheaper than CSC

https://cscmotorcycles.com/oem-parts...-parts/engine/


Thanks for the reply. This forum is an absolute godsend for me when I need help with this bike! You all rock!

Thank you :)

Can you tell us how you figured that engine is a lay down engine and not a hawk engine ?

Well the picture is quite clear that it is a laydown engine. Just look at the oil refill position, the carb inlet position and check the cylinder size.
So it's either the wrong picture or the wrong description.

Tt250 engine in a hawk? No. It's counter balanced and the hawk motor isn't, so the frame of the hawk won't clear the front of the tt250 engine case. That said, top end parts do qork, and some of the internals will

Swing arm will work.

The picture is certainly not great ,but the right side oil fill location is correct for a hawk ,so is the slightly right of centre intake port location .If we are talking about Honda horizontal style “lay down engines” ,they have left side oil fills with very few having a second one on the right side ,and the intake ports are in the centre of the head not like the picture .The picture looks like the engine has been tipped foreword to me ,which is why I was wondering if Guy Person had some other way of identifying the engine pictured .

He's wanting to go the other way, a TT250 frame and swap a hawk engine into it.

Well, in that case, yes - sorta. Would need upper front mount plates fabricated, and the lower mount tabs on the frame are probably not going to line up either.

That's what I was wondering about! Thanks Megadan.
:thanks:

peace made a new swingarm

https://www.chinariders.net/showthread.php?t=24066

looks really good, he told me

Bought a csc and tt250 frame and swapped my hawk efi gear on the frame, minus triple tree. Can't get a spark but everything else seems good. Anyone have advice or references?