Autoshop Machine Services in
Derry Township (NH)

Excellent experience. Super fast turn around and reasonable prices. Highly recommend!

Took the head of a 3 cylinder diesel tractor engine in for resurfacing. Greg did a great job and I had the head back next day. He gave me good technical advise on checking the valves. Look forward to doing business with him again on future machining needs.

Greg rebuilt a junkyard 7MGE head I had to buy due to my own mistake and it runs like a dream. He saved me a ton of headache and also gave me a few tips for rebuilding the bottom end of the engine myself.

What a great machine shop! I only had a small job - extracting a sheared bolt out of a fork tube from a 50 year old Honda motorcycle. Greg took my job right in and turned it around with astonishing speed for a super fair price. He showed me all around his amazing shop, and showed me some of the impressive engine rebuilds he was working on. Great guy, great shop, great find.

I brought my subaru heads to Greg to get resurfaced and he had them ready the next day. He did an awesome job and it was a great price. He was also very friendly and helpful! I will definitely go to him again if needed!

Grab your popcorn and prepare for a read: I first came across AutoShop Machine Services while I was searching for a reputable machine shop to take my B18B1 block to have built. Many shops prior to contacting Greg straight up either shot me down or gave me some extraordinary wait time. I called the shop, explained to Greg what exactly I was looking to do and was told to call back after a couple weeks and he’d be able to give me a drop off date. On that second call, I was given a day to drop off the block along with the parts. This was a full short block build on OEM sleeves. Pistons, Rods, Crank, Girdle, and a slew of other new parts were going into this block. After he inspected the parts he gave me a more than reasonable wait time for the new motor to be balanced and built. We talked about my ultimate goals for this motor which was a fun turbo street car that sees light track use. Power goal was 400whp at 18psi and so he built the block accordingly. A couple months later I one day get the call that my block is ready for pick up and I schedule a time to come by the shop. Upon first sight everything looked amazing, the block was extremely clean with all the new parts installed. I paid him the extremely reasonable price for having all that work done and took the block down to my mechanic. To make a long story short, I found out that my cylinder head requires machine work as well as a freshen up. Race car parts aren’t meant for longevity, and I was using a cam and spring combo that ended up chewing away my GSC T1 cams. I talked to Greg about my newfound dilemma and he explained to me the best way of going about it. I dropped off my cylinder head at his shop and we talked over what it needed. New valves, valve exhaust valve guides, and valve seals.I purchased everything then dropped the parts off the following week. Greg took no time cleaning, machining, and reassembling the head. I picked up the head and dropped it off to my mechanic to have completely new parts put in, going the OEM route this time to ensure maximum longevity on my new build. Greg informed me of the proper first start procedure and gave me key knowledge on the very nuanced aspects of a successful break in process. Things you’d never learn until you actually ran into certain situations or experiences, GOLD! On the day of start up, my tuner is present to ensure everything goes flawless and after all that time, effort and money I was very happy when the first start up went without a single hiccup. No leaks, no weird noises, no smoke, just a very quiet and smooth running engine. Music to my ears. We high idle the car immediately to break in the new cams and dump that oil, just as Greg instructed to after about 20 minutes of run time varying the load and rpms. Greg informed me that that first dump used oil should look like little glitter, actually what I saw I would describe as even finer than glitter. It looked like extremely fine, silver dust in the oil. I could not even see it unless I shined my flashlight directly on the oil. My mechanic looked at me and said “That’s amazing.” This motor was built by a perfectionist and it shows. I have had motors built before and never have I seen such little particles on the first start up, they are usually a lot more noticeable. I was almost at a loss for words. I’ve been boosting away at 15psi on an extremely conservative tune, dyno session scheduled for next month. My tuner mentions how well built and easy to tune my car has been. She feels extremely healthy and turbo spools quicker than my last setup, even though I went from a 2.0L to a 1.8L. Greg worked some magic on the cylinder head! I honestly could not be happier with my experience with AutoShop Machine Services. They will be my go-to machine shop for everything! UPDATE: made 430whp 300lbft @ 16psi on the dynapack hub dyno. Made it with extreme ease, and the oil change following the dyno session was extremely clean. My magnetic drain plug didnt have anything on it. Greg is an absolute legend.

Purchased roughly $10k in parts for my 2.4 liter toyota motor to be built by Greg. Motor failure happened after 800 miles. Dropping a valve into the cylinder after the cam on the exhaust side ate through 6 out of the 8 valve buckets on the exhaust side of the motor. $600 set of cams are junk now. Told me it was going to cost me more money. Lol 😂 ya I pulled my parts out of his shop. Once was enough for me. Very expensive lesson learned. Steer clear. Unless you want and expensive lesson of measurements or something gone wrong. So if you don’t have $15 to $20k dollars to blow in the wind run!!

Greg did an amazing job sorting out my Golf R cylinder head seats and decked the head to ensure it was straight. He also looked over everything and ensured my block bores were good.

Super professional and polite, down to earth guy. Job was fast and cheap, with quality equipment and attention to detail. Very impressed, leagues ahead of the other shops I've tried working with lately.

A picture is worth a 1000 words and this one should say 2000...So lucky to have stumbled into this machine shop... Hands down the fastest machine shop in the entire region! Owner Greg is incredibly knowledgeable, articulate and produces only the highest quality work.

Professional quality done right . I'd recommend thier services based on my experience ;-) My 1.8L 170K+ toyota had worn lower end & burned exhaust valves so I brought them the short-block and head to 'freshen-up' ~ Work was completed within quoted timeframe. Cost was transparent & reasonable. We just re-assembled & fired it up tonite ;-) sounds perfect - yeah it's green! (had helpers)

My 99 Suburban with 300K+ miles had low compression on cylinder 3 and was backfiring, shaking, with multiple misfires etc. I wanted to fix just the exact issue causing a problem given the age and mileage. I didn't want to have to put too much money into it. I removed and brought the head to Autoshop Machine services after using water and a compressor to test for leaks. I had found the exhaust valve seat on the #3 cylinder valve leaking. After some discussion and agreement Greg did a pressure test to rule out a few cracks as potential issues. It passed. He recommended bumping both valve seats not just the leaky one and it's a good thing he did as he found the other valve had a wobble and was likely the true source of the issue. He bumped both valve seats and replaced the bad valve with a new one I purchased for him. This saved me an immense and potential headache. All told the work was done in 24 hours and after I put my engine back together it runs better than new, humming quietly with no more misfires or backfiring. Great work, great value, super quick and for a very reasonable price. Thank you!

Gregg did a fantastic job of rebuilding the head on a 2006 Prius 1.5 L engine and had it done in a timely manner. Very happy with his workmanship iI would use him again in a heartbeat

The quality Greg produces is top notch. Attention to detail is exceptional and you can’t beat the price. Quick turnaround.

5 stars all the way. I dropped off a Toyota 4AGE long block and Greg gave me an estimate of 5 weeks, provided there was nothing seriously wrong. In that time he replaced the bearings, rings, rebuilt the head, and had it ready for me on time and under budget. I just finished building up the rest of the motor in my home garage and installing it in the car. She started right up! I'll be going to him for all my engine machine work projects from now on!

Greg did the complete engine rebuild on my 1971 MGB and I am very impressed with the finished product. During the rebuild, he kept me informed and invited me to the shop to view the progress. He delivered the finished engine to my home, and made a few visits to oversee the install. Due to some challenges I was having getting it started, Greg finished the install and did the break-in for me. I am very happy with the performance and strength of the engine. Greg continues to stay in contact to follow up, confirming everything is running properly. The overall experience and service made me extremely happy I selected Autoshop Machine Services to resurrect my 1800cc engine.

Best machine shop I’ve ever dealt with Im a life long customer he’s always there when I need him in the beginning he said he would take care of me in the end he did 100% even when things were difficult he had full confidence in me and himself getting my genesis motor built was the best experience it could have been thanks to Greg!!

Greg is a great guy but does not properly test heads I had a set of heads go back to him three times to find out they we're cracked update: well because I can't answer you back o have to update my post. actually those cracks had made it to the valve seat's and made a no start issue and when I put new heads on it was fine when I brought the heads to my normal machine shop they leaked right from those cracks you can say they don't go anywhere but it caused a no start issue due to lack of testing heads before they leave this is why I gave the review I left it seams like a lack of care and it wasn't the first time I brought heads back to you to figure out the issue unfortunately I didn't make out on this and unfortunately the heads failed due to a lack of work

I was in a jam with an old marine generator carb and needed a trusted machine shop to fix it up for me as it's an obsolete part. I called the shop and Greg jumped right in to help and even better, got it done the same day! He did a fantastic job. So glad I found Autoshop Machine Services.

Very pleased with the quality of work I received on my EJ255 heads. Greg clearly cares about what he is doing. Turnaround time was exceptional.

Very reasonable pricing, fast yet quality work comes from Greg. Helped me split the cases on my dirtbike along with other things. Highly recommend

Very fast turnaround. Greg keeps you in the loop through the entire process. He’s been doing cylinder heads and bottom end machine work for my street and track cars, as well as my customer cars. Highly recommend!

Had my Subaru heads resurfaced by Greg, called Wednesday for availability and was able to bring down the same day and pick them up on Thursday. Very quick turn around time and the price was fair and reasonable for the work I had done. Greg also didn't try to kick you out of the shop, when you asked a question he answer it thoroughly and if he could demonstrate how something was done he would. Would recommend to any friends/ family that need machine work done.

droped off my subaru heads at 9am. he had them resurfaced by lunch. greg gave me an awesome price as well. will be bringing all my future business here. shop is also very cool!!!!

Autoshop Machine has been doing my machine work for several years now and has great turnaround times as well as fair pricing. The quality of the work is top notch.

honest and reliable machine work and very quick return time to get the job done right the first time and back to my customers quicker would recommend every one to go there.

Greg did amazing on our motor. Thank you so much greg and for the honesty in this project. He built a Frankenstein motor that shouldnt work on paper and it came put amazing. We couldnt be more happy with our choice of shop. Thanks again!