No customer service & they delete negative reviews I've made several orders from them and always got what I ordered. One expensive item (<$1K) arrived with some inexpensive parts missing. I provided them with the prod #, missing parts#, part description, & photos from their assembly manual. Many emails were exchanged. Still, the service tech was unable to correctly identify the part. He guessed at it and twice sent me the wrong parts and then gave up. When I wrote a negative review, they pulled it off their site.

44cc Small block Hottie V8 engine This is my second engine directly from CISON. My first was the V2 15.7cc Harley Davidson Engine and now the Chevy small block V8. Both, I am very pleased with because both came directly from the manufacturer in China and the price compared to buying them in the U.S. is much cheaper directly from China. Customer service is absolutely great! I hope you are lucky enough to speak with Lucas! You can usually get a response very quickly. My experience has been within 24 hours! I first contacted CISON about a Hall sensor that went bad on my V2 engine. I had the sensor in my hand about 10 days later straight from China. My second experience was for instructions to assemble the V8 in English. I was immediately sent assembly instructions in Chinese that Lucas said would be converted to English and sent to me later. I actually converted the instructions to English and sent them back to CISON before they could do it! I simply used adobe to convert the document to word format in Chinese and then converted Chinese to English! They were very appreciative to me beating them to the punch. I am still in the process of assembling the V8 and will post videos to YouTube immediately when finished. These model engines are a real work of art and very mind blowing! Today I demonstrated the Harley Davidson engine to automotive students at my school and they were totally blown away that it actually runs..... myself and the instructor showed the partially assembled V8 engine to the students and they can't believe something that small and realistic actually work and runs! They wanted to hold the block! The price you pay for these engines is small compared to the WoW!!! you get from future automotive technicians. My plans are to purchase another one and donate it to the school. These things are great conversation pieces, fun to work on and even great to just look at! I love my purchases from CISON because they're trustworthy, reliable and better to purchase from than local. Stay tuned for my first videos on YouTube that will demonstrate problems, fixes and downloadable instructions in English. My first video will show what's in the box? Assembly and then running! Stay tuned...... I'll be back!

Successful Christmas because of enginediy! My mom really wanted to find something for my son to build. He told her he’s interested in doing something with his hands for a career vs “going to college”. My husband is a mechanical engineer and their brains work pretty similarly. I was so happy to stumble upon enginediy.com. We decided on a small one as he is only 12. He built it pretty quickly and LOVED getting it to run successfully! It’s a combustion engine and we already need to go buy more wick for it! I’m glad he will have something to set on his desk for a very long time.

Enjoyable hobby I got the kit in the exact shipping time. I am really appriciated for that. As soon as i had free time after my ordinary works, i had focused on it in the evening. A happiness occured on my face at the end of the work . Because it was really enjoyable to create such nice hobbies. Thank you for all people who generated such nice works for us.

Great and Respectful Service I like EngineDIY because they always do what they say they will do. If you have any problems assembling one of their excellent kits, an email to enginediy.com will get you a quick reply. I recently purchased a very new model. Understandably, there have been a couple of production bugs, causing me to email EngineDIY to ask for replacement parts. They were sent to me without complaint as soon as they could source them. You are safe with EngineDIY. Recommended!