wrmhaste 235 #1 Posted May 31, 2014 Anyone know where to get valve seats for a 1992 520h? My rear cylinder intake One has actually worn into the block some. It's even and I think if I put a new seat in it it will be fine Share this post Link to post Share on other sites
wrmhaste 235 #2 Posted May 31, 2014 Even a part number would help. I'm damn near crying hear folks. Haha Share this post Link to post Share on other sites
kc8kqy@gmail.com 0 #3 Posted May 31, 2014 Should be p mod I think. onanparts.com They have over size ones to fit in Share this post Link to post Share on other sites
wrmhaste 235 #4 Posted May 31, 2014 Mine actually wore depth wise. It sunk in 1/16" Share this post Link to post Share on other sites
kc8kqy@gmail.com 0 #5 Posted May 31, 2014 Block on eBay I guess is your next choice . Block on eBay I guess is your next choice . Share this post Link to post Share on other sites
wrmhaste 235 #6 Posted May 31, 2014 That's what I figured so I went ahead and cleaned everything and took a prick punch and went ask around the seat to set it in place. It should buy me a month or two Share this post Link to post Share on other sites
joel_400 59 #7 Posted June 1, 2014 I would think if you have a good engine machine shop around you that they could fix it properly. You might check into that before condeming it completely. Joel Share this post Link to post Share on other sites
woodchuckfarmer 333 #8 Posted June 1, 2014 I had 2 intakes put in and it cost me $130 I didn't think that was to bad. Share this post Link to post Share on other sites
wrmhaste 235 #9 Posted June 1, 2014 It's not a matter of having it done its a matter of if it's salvageable. Turns out I lucked out and got a new seat, cleaned the area flattened it all and adjusted it. I now have a happy horse again 1 Share this post Link to post Share on other sites
ericj 1,579 #10 Posted June 1, 2014 in my neck of the woods there is a napa that has a machine shop and i've had 2 onans valve seat issues fixed there about a $ 100.00 eric j Share this post Link to post Share on other sites
wrmhaste 235 #11 Posted June 1, 2014 In my area or all of New York I wouldn't trust a Napa to check the air in the tires. Share this post Link to post Share on other sites
shorts 182 #12 Posted June 1, 2014 Any ''good'' automotive machine shop can source and properly replace valve seats and guides Share this post Link to post Share on other sites
wrmhaste 235 #13 Posted June 3, 2014 Here is the worn valve. I put a quarter there to show the lip. Share this post Link to post Share on other sites
km3h 543 #14 Posted June 3, 2014 Here is the worn valve. I put a quarter there to show the lip. You are talking about the valve seat I assume. Had on do this on a Kohler and tried to get a replacement. Kohler says to buy a new head. They do not sell replacement Valve Seats. So I drove the seat back into the head and using a center punch peened all around the area of the seat. Gave the tractor to my son-in-law and he has used it for three years now with no problem. You could also have the seat knurled and then drive it in. But if you can get a new seat, that is what I would do. Share this post Link to post Share on other sites
wrmhaste 235 #15 Posted June 3, 2014 This is an onan. They do sell the seat but it's $90. I was able to repair the head and get a new seat for next to nothing. I also staked it in place. Tested compression after and it's a perfect match to the front cylinder. Share this post Link to post Share on other sites
km3h 543 #16 Posted June 3, 2014 What works on a Kohler will most likely work on an Onan. I am glad you ere able to get a seat. Much better solution than what I suggested. I only did that because there was nothing else to do. Share this post Link to post Share on other sites
546cowboy 302 #17 Posted June 10, 2014 I had one that was wallowed out way over size. I took it to a local Fab/Welding shop and had them weld a bead around where the seat goes ( this guy is a very good man to know )and then took it to the machine shop and they cut out for a new seat. A good machine shop will be able to do this. Worked out great. Share this post Link to post Share on other sites
wrmhaste 235 #18 Posted June 10, 2014 I had thought about doing that but I really needed to mow and at the time my 310-8 wasn't ready to mow. I am in the process of getting a new block for the 520. Once I get the new block I'm going to properly repair the old one like you did. That way I will have a spare Share this post Link to post Share on other sites
welderdude 1 #19 Posted August 5, 2014 Thought there was loctite remedy for the valve seats, I remember reading some where? Share this post Link to post Share on other sites
