There arent many topics that i will claim to be an expert in, but i will say "Yorks and On Board Air" in general is something i have been using for a LONG time and have setup DOZENS of various rigs with Yorks and such.
I was one of the first folks to install a york on a Heep and many others have followed my exact setup and i have installed a lot of york systems.
I will give my two cents based on ACTUAL experience, not internet read hooey, which about on-board air there seems to be alot of.
First off, the Yorks ARE amazing compressors and pump a ton of air, but arent all that bombproof as people are claiming. I have seen with my own two eyes two BRAND NEW, properly oiled compressors explode in less then 30 mins of use! On the flipside i have seen some 30 year old units run flawless for years! When they let go, it is UGLY and can wreak havoc on your engine!
We used to go to the local yards and pull ALL of the Volvo and Mustang yorks we could find, clean them up, test them and sell them to a club member, or install them into something! In the estimated 20-30 yorks i have pulled and sold or installed over the years 2 of them seized up and 1 just down right exploded. All failing Yorks were properly oiled, etc....
Another thing that has always stumped me about Yorks is the mysterious "Oil Blowby" issues. I have pulled 20-30 year old compressors and used them for years with ZERO blowby and i have used BRAND UNITS that pissed oil like a race horse. Some have blowby and some dont, doesnt seem to be any rhyme or reason.
One thing i will say is a COMPLETE INTERNET myth is the whole "Oil Blowby Fix Mod". It doesnt work, plain and simple. I have personally tried and tested this several times with ZERO change after the mod was done.
QUOTE ME ON THIS REID

: Mounting a York requires a lot more attention to detail then most folks are using. The yorks are fawwwwwking HEAVY and to have all of that weight of a york mounted on 4 almost inline bolts (not sure if this is the bracket YOU are using or not) on the top of an already senstive cylinder head (without anything on the lower portion of it mounted solidly to prevent all the weight from pulling on those holes) is a RECIPE FOR DISASTER. Quote me on this!
I started running a C02 tank when i got my 80 because i didnt want the weight of the York putting all the stress on an already senstive head and i can honestly say that i think its the perfect solution for reasons that Dave mentions. I cant believe i am agreeing with Dave on 2 different topics in a 2 months span!
We run C02 for two reasons. Reliability and Simplicity. C02 will never break down. It will never seize up. Its super simple and reliable. I dont have to carry tools to fix it. I dont have 10 connections that can fail. I can run it if my battery is dead and with my engine shut off.
All 100% true and why i am running Co2 over a York and will continue to do so
Yes, and the results can be VERY ugly when they do!
I dont need extra electrical, plumbing, pulleys, tank and brackets. I want to be able to get a belt anywhere anytime and not have to remember which belt it was that the york took.
Another excellent point!
But there's two sides to each setup ...... you can run out of C02.... and then you're screwed. You need to monitor and plan accordingly. Yes we fill it before every major trip. Also, it seems like C02 keeps getting more and more expensive to fill. If you go out all the time, it can get costly.
Very true, but welding supply places tend to never change their prices, i have filled mine a whole bunch of times and its usually a $17 exchange, i dont have any fancy foo foo colored tank, so i just exhange it.
The other thing is, i've never seen a York fail ever.
I have and its very ugly, do a search in the jeep forums, if they fail the whole thing seizes, throws a belt and can be very costly, there are a decent amount of documented incidents with jeepers having issues (aside from owning a heep) with Yorks and seizing them
I've used a york on the trail and they're amazing, they work just as good as c02. With the correct setup, i see no problems with it.
I agree. But they are very fickle!
The YORK is a bomb proof setup and one time shot. Set it up (right the first time) and you'll never need to do anything else with it.
You'll learn!
Hell Yes they are!