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Old 04-06-2019, 03:54 PM   #1 (permalink)
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Default Warped Heads....

So I took the heads from my VR-4 into a shop to get leveled and planed. The shop informed me they're warped and bowed, and it'll cost me $630 to level and plane them, before even testing the valves. Should I just buy used heads, and have them tested? What's the most cost effective option available to me? Thanks!
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Old 04-06-2019, 04:45 PM   #2 (permalink)
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Default Re: Warped Heads....

Yeah, if they're bananas, the cam journals won't be straight anymore. They'll have to be bent back straight, resurfaced, and depending on how good a job they do straightening, possibly line honed... They'd be scrap metal to me. I'd just go drag another set off the shelf and save myself the headache.
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Old 04-06-2019, 07:59 PM   #3 (permalink)
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Yeah, if they're bananas, the cam journals won't be straight anymore. They'll have to be bent back straight, resurfaced, and depending on how good a job they do straightening, possibly line honed... They'd be scrap metal to me. I'd just go drag another set off the shelf and save myself the headache.
That's what I was afraid of. Do I need to get the new heads planed or anything? Or is it safe to just swap them?
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Old 04-06-2019, 08:20 PM   #4 (permalink)
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Default Re: Warped Heads....

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That's what I was afraid of. Do I need to get the new heads planed or anything? Or is it safe to just swap them?
Have them checked... If they're flat, and have no deterioration on the surface, you'll be fine. Most need to be touched up. Just make sure whoever does it can cut a near mirror finish that's an acceptable RA to the MLS gasket.
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Old 04-06-2019, 11:26 PM   #5 (permalink)
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Default Re: Warped Heads....

$650 is ALOT in labor for just milling.

I had mine milled, new valve guides, seats, cut for 1mm Iconel and Stainless/Nitrate oversized valves with titanium retainers and high rev springs,, re-assembled, shimmed, etc. for about that much, and it was all done at some of the best quality I have ever seen.
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Old 04-07-2019, 07:40 AM   #6 (permalink)
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Default Re: Warped Heads....

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Originally Posted by Warzone View Post
$650 is ALOT in labor for just milling.

I had mine milled, new valve guides, seats, cut for 1mm Iconel and Stainless/Nitrate oversized valves with titanium retainers and high rev springs,, re-assembled, shimmed, etc. for about that much, and it was all done at some of the best quality I have ever seen.
That’s because they need straightened first.
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Old 05-19-2019, 07:07 PM   #7 (permalink)
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Default Re: Warped Heads....

Quote:
Originally Posted by RealMcCoy View Post
Yeah, if they're bananas, the cam journals won't be straight anymore. They'll have to be bent back straight, resurfaced, and depending on how good a job they do straightening, possibly line honed... They'd be scrap metal to me. I'd just go drag another set off the shelf and save myself the headache.
Random question about the old heads, good sir. What the hell do I actually do with them, since they're scrap?
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Old 05-19-2019, 09:11 PM   #8 (permalink)
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Default Re: Warped Heads....

Trash em.
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Old 06-02-2019, 02:03 PM   #9 (permalink)
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Default Re: Warped Heads....

Old heads are trashed. I'm checking over everything else, so that this can be done for good. Just replaced the front crankshaft seal, looked like it was leaking before. Thinking it should be good to go, but I wanted to confirm with you gents. How deep should the seal be inset? I have it set 1/16" or so in from the surrounding case. Next up, I'm trying to clean out one of my more stupid moves of using a coolant stop leak system, the crap is still in the system, gonna have to get it flushed, extensively. Along with that, I was checking the coolant system for integrity after the multiple overheats, and came across this (pic below). Is this normal, or is the water pump really stressed and cracked?

https://imgur.com/a/E6wzNrM
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Old 06-02-2019, 06:15 PM   #10 (permalink)
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Default Re: Warped Heads....

Quote:
Originally Posted by Hackurs View Post
Old heads are trashed. I'm checking over everything else, so that this can be done for good. Just replaced the front crankshaft seal, looked like it was leaking before. Thinking it should be good to go, but I wanted to confirm with you gents. How deep should the seal be inset? I have it set 1/16" or so in from the surrounding case. Next up, I'm trying to clean out one of my more stupid moves of using a coolant stop leak system, the crap is still in the system, gonna have to get it flushed, extensively. Along with that, I was checking the coolant system for integrity after the multiple overheats, and came across this (pic below). Is this normal, or is the water pump really stressed and cracked?

https://imgur.com/a/E6wzNrM
That's just normal casting lines. Not an issue.
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