Looks more like it was surfaced with a belt sander than anything. That gouge/chip doesnt look healthy either. If it were my engine I would find another head.
Project: Shouldn't have to do this
- Thread starter 7Mboost
- Start date
Ahhh with ya now, that's errosion not a gouge!
As I said sit a gasket on and make sure it doesn't extend under the seal surface.
If it's just inside the cutout it'll be fine.
As I said sit a gasket on and make sure it doesn't extend under the seal surface.
If it's just inside the cutout it'll be fine.
Yeah both places look like pitting from lack of coolant changes &/or driving it with a BHG. I'm surprised they didn't keep surfacing the head until those marks were gone. I'd be afraid to use it that way.
Dale
Dale
Dale: As long as they don't extend under the gasket sealing surface they'll be fine, there's a limit to how much you can remove from a 7M head the surface isn't that thick.
On a related note I saw errosion like that starting using Green coolant on a brand new block within 2 weeks
On a related note I saw errosion like that starting using Green coolant on a brand new block within 2 weeks
I have an extra head laying around but I'd rather use this one because its been ported slightly.
IJ: What I'm getting is if the gasket it in anyway "moved" from the pit I should use the other head?...I'll just post a picture when I get the head gasket? Oh also, I was thinking about going with ARP main studs but I've been TOLD that I'd have to remachine or use different or something for them, is that true?
IJ: What I'm getting is if the gasket it in anyway "moved" from the pit I should use the other head?...I'll just post a picture when I get the head gasket? Oh also, I was thinking about going with ARP main studs but I've been TOLD that I'd have to remachine or use different or something for them, is that true?
It all locates on dowel pins so it can't "move"
Lay the HG on the head line up the dowel holes grab a sharpie and trace around the holes in the gasket and take a pic.
If the errosion ISN'T under the gasket edge it'll seal no probs.
Lay the HG on the head line up the dowel holes grab a sharpie and trace around the holes in the gasket and take a pic.
If the errosion ISN'T under the gasket edge it'll seal no probs.
OH! Ok sorry I imagined it much harder than you were describing, any input on the ARP main studs?
I'd get the block align-honed with the main studs due to differences in clamping force - but honestly, our stock bolts are RIDICULOUSLY strong for the bottom end - you won't see much in the way of extra strength going with the main studs.
As for the head RA, please tell me you didn't let Partsco do the machine work on that head. I had them do my head (it was Adam that did the work, actually) and the brand new Titan MHG would not seal on it. I brought that head with me to Bryan Maloof, and he said the RA was nowhere near the 25 I asked for. When he did my head for me, it came out almost like a mirror!
As for the head RA, please tell me you didn't let Partsco do the machine work on that head. I had them do my head (it was Adam that did the work, actually) and the brand new Titan MHG would not seal on it. I brought that head with me to Bryan Maloof, and he said the RA was nowhere near the 25 I asked for. When he did my head for me, it came out almost like a mirror!
I had my shop fit the block up and check alignment on the main saddles and it didn't need even a hone let alone a line bore.
Mine is a new 93 block though.
Mine is a new 93 block though.
Doward;1088809 said:
JOHN! Glad your back.
Anyways, I'm gonna take the head back to Partsco and make sure I get it 30RA, I know the new guy in the head room and I'll repost once I get it back to see if its up to par. I kind of have to go with Partsco because of price and conveinace but I'll make sure I get a good job.
I'll keep the stock mains, that's the $125 savings I wanted to hear
Poodles;1088830 said:
I plan to go big, beat hard, track and drive this car a ton! This car will see the dragstrips, airstrips, autocross, and local highway...