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February 2024 by Justin F.
I took my RB26 head in to get resurfaced and they took off 10 tho and ended up damaging my head to were it went past the fire ring. They took responsibility for it after i pointed it out with no push back. Then they had it tig welded and resurfaced again and took another 10 tho off. I picked it up and didnt think about checking the cam journals or saddles, what ever you would call them. The reason i didnt think about checking that side is because that wasnt the side i had work done to. Fast forward like 2 months i finally got around to working on my head again and found extensive damage to my journals/saddles. I dont want to take it back to them because they will probably damage it to the point of no return if it isnt already there yet.... Horrible quality. I will never go back to this business again.
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January 2024 by Robert Madison
Don's is great place and brad is awesome to work with
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January 2024 by jennifer stanley
They did a great job repairing my rim. They got it done quickly.
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January 2024 by Norm Kramer
Experienced, friendly staff. Good quality work.
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December 2023 by Alex O
If you're not in a rush but looking for the best workmanship. This is your place for overhaul engine parts.
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September 2023 by Elizabeth
They fixed a wheel barring another shop messed up and refused to fix, for even cheaper than the first shop charged. They provide QUALITY work and have amazing customer service all the way from the wonderful woman at the front desk to the guys doing the work in the shop. You guys got a customer for life! Highly recommend this shopService: Vehicle maintenance
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September 2023 by Koby Taylor
Absolutely superb speedy service. Cleaned and resurfaced head with speed and precision. The only machine shop I trust in Portland!
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August 2023 by BeardedTimayo
I really don't even know where to start. After seeing all the stars and reviews, I felt like Don's Machine Shop was the place to go. I wanted them to build me 2 motors, one was a 6.2 LS the other was a 5.3 LS. Both Gen 4 GM motors.I received the 6.2 back first. After installation and starting it for the first time, there was a racket that was so loud I thought it was leterally falling apart. After further inspection I discovered that they installed the heads backwards, the steam ports were now in the back of the motor instead of the front of the motor. They informed me they didnt want to swap the heads and instructed me block off the ports in the back and drill out the front. They said they would graciously provide the block off plates, free of charge. After a month of back-and-forth with them (they actively and continuously denied responsibility and fault) I took it to another shop where they found 5.3 head gaskets on my 6.2 motor. I contacted Don's with the results at which point Brad made me bring the 5.3 gaskets that the other shop removed from my 6.2 for proof. When I showed up to Don's, Dave the mechanic that installed the gaskets, was extremely unprofessional when confronted with his mistake. That's when they finally accepted fault and begrudgingly paid the other shop to fix it. At no point did they offer any apologies for his actions.At this point I could not trust them to correctly complete the work on my 5.3 and requested it back. They helped me load it, including an actual tub of nuts bolts with no organization whats so ever. Come to find out not all of it was there, the cam shaft was missing along with several gaskets and a set of head bolts, which they later provided me with new ones. The block and heads looked like they were freshly machined and rebuilt. Both heads ended up having cheap steel valves installed and incorrect shims underneath the valve springs. One exhaust valve had a gouge in the stem causing it to bind.I ended up having another shop tear down the 6.2 after finding Don's installed cheap valves in it as well. It wasn't worth my time or effort to contact them about the atrocious work they do.Make sure you tell them you want quality parts installed or provide them yourself. Better yet find a quality shop that is going to do the work for you all together. That way you won't have to go through the hassle I went through.Service: Motor building
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August 2023 by Dale Calnek
Always prompt and always perfect.
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May 2023 by Goldtooth Tramp
Great shop , highly knowledgeable, awesome service. Would recommend to anyone who wants the job done right
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April 2023 by Romeo Archila
Great guys Brad and Keith, I would recommend this place to anyone.
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March 2023 by Eric Brito
Great,quick service highly recommended
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February 2023 by Mike Savich
I've said it before and I'll say it again great place to do business always friendly.always helpful if you have questions don't be afraid to ask they will give you an honest answer. No bs here just straight business.
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February 2023 by Rich Bailey
Great service and perfect precision work. It's the best machine shop in the northwest!
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February 2023 by Tim Colt
Everyone at Don's is great I've been using them for years. They even took care of a rush job for me about a week ago
