Dover Cylinder Head Service, Inc.

MARK E LOVE

They sold me new heads and the rocker studs were not sealed and water filled the oil pan and called to see if they would stand behind them and they said NO they had pulled them out of the box and gave them to me...i asked if they could go back to who they got them from and they said NO... So basically they don't stand behind what they sell.... $700 to them and $2000 motor ruined .. they dont care

ben gamble

RUN... RUN FAR AWAY FROM THIS SHOP... I had them do all the machine work for my engine build. I found 4 major problems before even assembling without even having the tools to measure all of their Machining work. (update) MY HEADGASKET IS NOW BLOWN or the head is cracked between cylinders 2 and 3 after only 5k miles which is either caused by their poor machine work and pressure test to the head or their bad recommendation not to deck the block also. (update) THEY SET MY BEARING CLEARANCES WAY TOO LOOSE. when assembling I noticed they set my mains and rods at roughly .001 per inch of bearing diameter which may work on some engines but is way above the maximum spec for my isuzu engine. I ended up having to run 20w50 oil just to maintain oil pressure when it used to run on 10w30. The new oil pump couldn't keep up with normal oil) THEY CROSS THREADED 10 OF THE BOLT HOLES on the side of my aluminum cylinder head. They clearly rammed bolts in that were the wrong thread pitch. I told them I was going to be using a speedi sleeve on the crank and without asking they polished down the front seal surface so much that I couldn't use the sleeve but not far enough to remove the groove in the crank. They took off so much that I had to hunt for a different size sleeve. They also told me the cylinder head was ready to install and right before I installed it I discovered that the valves were not lapped at all so I had to completely disassemble and reassemble the head. I had them install threaded inserts for all the spark plugs. they promised me that they would use the specific brand and type that I asked for. When I picked it up it had a different type of enormous threaded inserts in it that have a tapered seat instead of the flat seats needed for the Crush Washers on my spark plugs.

tim taylor

I was told this place Was top-notch for engine rebuilding and cylinder head repair. Chris Dover treated me like I was the only customer there even though they have a heavy work load . What I heard about them impressed me so much that I drove 40 miles. I'm looking forward to them working on my engine and cylinder heads .Highly Recommend!

Larry Downs

Took 2 heads for repair for Jim's Auto Repair. He has used them for years as they do quality work. Long drive but worth it. The only problem is it is going to be two weeks to do them. They are off our race car and we have a big 3 day race at Bristol Tennessee in two weeks. Had to find another set of heads. They are swamped with wok. That is the price they pay for doing quality work. I still highly recommend them.