howeitsdone Posted January 23 Share Posted January 23 In the middle a rebuild and finally got to the head only to find a slight crack in the exhaust on #1. Does this look like something a machine shop could fix? I'm having a hard time finding an 87-99 head in my area to replace so looking into any other options possible. Quote Link to comment Share on other sites More sharing options...
gogmorgo Posted January 23 Share Posted January 23 Could potentially be ground down and welded back up, then cut out for a valve seat insert to be put in. Depends on how deep the crack goes. Properly rebuilding the head involves a trip to a machine shop to have it surfaced. If you ask a shop they’ll probably want to look at the thing before giving you an answer. Quote Link to comment Share on other sites More sharing options...
Pete M Posted January 23 Share Posted January 23 pullapart north shows an 88 in stock. no idea what's left of it of course. Quote Link to comment Share on other sites More sharing options...
The86manche Posted January 23 Share Posted January 23 There's an 89 in a local yard to me I could pull the head off. Shipping wouldn't be cheap I'm sure though.. But I'd say no that can't be fixed.. Quote Link to comment Share on other sites More sharing options...
AZJeff Posted January 24 Share Posted January 24 Given that 4.0 heads of that variation are a dime a dozen in junkyards, why spend the money to resurrect a cracked head? Remember, repairing cracked heads is a skill that not every shop is equally competent in performing. Quote Link to comment Share on other sites More sharing options...
pizzaman09 Posted January 24 Share Posted January 24 I have to imagine a used head is less expensive than that work. Quote Link to comment Share on other sites More sharing options...
cruiser54 Posted January 24 Share Posted January 24 Quote Link to comment Share on other sites More sharing options...
75sv1 Posted January 24 Share Posted January 24 Did a search on Car-Parts.inc.com. Tallant Bros in Cummins Ga has two RENIX heads for $100 each. Welding Cast iron, you have to heat the part up. Then weld it. Then heat it up again, and it needs to cool slowly. Either a thermal barrier, such as lime, or an oven. Quote Link to comment Share on other sites More sharing options...
howeitsdone Posted January 26 Author Share Posted January 26 Thanks all. Found a whole Renix motor for $100 an hour north. Going to get it Saturday. Maybe I'll use the head to practice cast iron welding skills that I'll never use. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.