Duffin Engine Service

We use Duffin for all of our machine work. They are fast and friendly. We have been using them for years and have never had any issue. I would recommend Duffin to my own mother.

these guys... never heard anything but good about them... so when I needed a valve job on my rangers heads... and matt over at kotzur's told me it'd be a week, I said ok,lets see what they're worth... well three days and 350 dollars later I got my heads back... bolted it up truck ran great...... for about two weeks,then I started hearing valve clatter again...I'm a motorhead with an ear for these things and it wasn't that bad so I let it go... but then,less and less power... til eventually... 4 months later... it got so bad that it was unacceptable. pulled the head off that was making all the noise. and there is so much play in every valve except one... that even my girlfriend who knows absolutely nothing about engines knew it was bad.... either they didn't really do my valve guides... or just didn't care enough to check play.... so in general... rude desk ppl...poor service ethics... and possibly ppl who don't have a clue what they're doing working there. would not recommend them to anyone