427 Warhawk.
I've gotten a couple of emails from a Bill Mitchell Jr. at World Products so they are now on board with this issue. I sent him the photos enclosed in this thread of that misalignment, but I'm guessing until Bryan actually gets that engine into the shop and takes measurements, everyone is just guessing about what is wrong. I've already stated to Bill Mitchell Jr. and Bryan Neelen that modifying either the intake manifold and/or the heads will be a deal breaker. Bill seemed to infer that it may just be a case of stacked tolerances working against this alignment, but if that was supposed to make me feel all warm and fuzzy inside, it failed miserably. He was thinking it is out of tolerance something like 0.050", but to me it looks at least three times that amount from the photos.
You know, had I had a crystal ball back when I got this hairbrained scheme and could have seen the situation today in that ball, there is just no way in hell I would have proceeded. I spent an awful lot of money just to get a colossal headache out of this.
So we'll see.....
Now all I have to be concerned about (at this moment) is the fact that shipping anything this time of year is not the best time to be doing that sort of thing.
All things considered (holidays in particular), I'm not expecting to see that engine back at XtremeMotorsports until well after the first of the year.
At least World Products manned up to the problem and didn't try to slough it off as a "well within acceptable tolerances" dodge. Chris and I discussed our alternatives today before I got this news, figuring on what our next step would be in the worst case. But fortunately we won't have to go there, it appears.
Darion
The Best of Corvette for Corvette Enthusiasts
I'll be honest, I won't feel out of the woods until everything is bolted up and it starts up for the first time. I guess with this one machining error, I'll be waiting for the other shoe to drop for a while yet. There is still a lot of stuff that needs to be hung on that engine, any one of which could be another issue if there is another machining error to contend with. I certainly hope that isn't the case, but who would have expected this one? Not for what I paid for that sucker....
+1 to World Products !
Subscribed so I can see how your build turns out. Happy Holidays!
----- Original Message -----
From: "Bill Mitchell jr" <bmjr@theengineshop.com>
To: "Rich Z" <rich@corvetteflorida.com>
Cc: "sales" <sales@latemodelengines.com>
Sent: Thursday, December 24, 2009 8:46 AM
Subject: LS Heads
> Rich,
> Ok, Some progress here. Took longer then what I was expecting but
> all and all I guess this is all the better. After indicating the heads
> on a block in our cnc as the guys at LME did we came up with I believe
> the same number or at least pretty close. Our numbers show that the
> heads for your build were off by .125" total width side to side. This
> means .0625 per head. Now I went through every head I have here and
> found that they are all off by approx. .030-.035" per head. The
> difference here is from your heads being milled, which had to be and no
> way around it, after all this is what achieves the exact compression
> desired. This is why in all engine bulds there is always some sort of
> modification needed due to other modifications. In this case here yes
> the original hole was off from GM spec but even if it were dead on, the
> fact that a mill was needed on the head deck it changes the location of
> the intake holes. So what we decided to do here since all of our heads
> have the holes off from where your build would need them after milling
> and to salvage all of the extensive labor that LME has put into these
> heads, we installed aluminum bolts with loctite to seal up the existing
> hole and remachined the new holes in the exact location needed for your
> build. I also noticed in the pictures sent from the shop installing the
> manifold in the first place that the manifold was not seated onto the
> heads but hung up on the lower portion of the valve cover rail so I
> Machined this as well for proper fit. The heads will be finished here in
> approx. two hours and am doing what I can to get UPS or Fed ex here to
> pick them up. They are on a delivery only schedule today and we are
> closed next week but if need be I will come in next week for UPS to pick
> up. I know you had some original concerns about any modifications but in
> this case we really just had no choice and really are not talking about
> anything out of the ordinary. Personally I would have elongated the
> holes in the manifold as we do on a lot of engines but I know you did
> not want to do that. I went this route instead of the inserts because I
> just felt that it was a stronger and more integral and permanent fix.
> You will have no problem with this and don't have to worry about this at
> all. It will live forever. When we are done with the fix I can send you
> a photo for you to see and more then likely will not even be able to see
> the actual fix when we are done.
> Happy Holidays and thanks for your patience,
> Billy
----- Original Message -----
From: "Rich Z" <rich@corvetteflorida.com>
To: "Chris Harwood" <chris.harwood@motorsportsxtreme.com>
Cc: "Bill Mitchell jr" <bmjr@theengineshop.com>; "Bryan Neelen" <sales@latemodelengines.com>
Sent: Thursday, December 24, 2009 9:19 AM
Subject: Fw: LS Heads
> Chris,
>
> What do you think of this? Would this be acceptable to you if this were
> YOUR engine that you just spent $16K on? My concern would be the matching
> of the intake ports on the heads to the intake manifold. Can you send my
> intake manifold to LME so they can make certain this will not be an issue?
> Porting needed? I have to admit I'm not real comfortable with getting
> "fixed" heads, but I would imagine there is the issue of re-machining new
> heads that someone will have to eat the expense for. But I don't want it to
> be ME that is drawing the short straw with this deal, though no fault of my
> own. So to be acceptable I want some concessions made, please. (1) I want
> the intake manifold ports and intake ports of the heads matched and ported
> so there is no restriction from misalignment whatsoever. And (2) I want
> that "fix" of the heads, with the understanding that it has been known
> upfront that this will be a turbo forced induction engine, to be warranted
> for life. Not anything else but the fact that if that "fix" fails, that I
> will be covered without that expense coming out of my own pocket. I'm not
> talking about everything on the heads being covered, just those bolt holes
> holding the intake manifold in place that are being adapted to fix this
> misalignment problem.
>
> Also, to whoever can answer this one, a question about the milling of the
> heads for compression ratio modification. I understand that the compression
> on my engine will be 9.5:1, which is low compared to a typical high
> performance engine of this nature. What is the compression ratio of the
> heads, as is, when placed on an engine such as mine without milling to
> increase the compression?
>
> Merry Christmas, everyone!
>
> Thanks,
>
> Rich Z.
>
----- Original Message -----
From: "Bill Mitchell jr" <bmjr@theengineshop.com>
To: "Rich Z" <rich@corvetteflorida.com>
Cc: "Chris Harwood" <chris.harwood@motorsportsxtreme.com>; "Bryan Neelen" <sales@latemodelengines.com>
Sent: Thursday, December 24, 2009 11:15 AM
Subject: Re: Fw: LS Heads
> Rich,
> I have no doubt in my mind that this repair will not be a factor in the
> future. As far as your question on compression. There are many ways to
> skin a cat when building an engine. The combination of bore size,
> chamber size and dome size as well as piston to head quench. So there
> really is no right or wrong here it can be accomplished by changing any
> one of these factors and made up some where else. The truth of the
> matter you can really only estimate in the planning stage of an engine
> and when the parts from many different manufacturers arrive, it is then
> when the true calculations can be figured and at that point the engine
> builder formulates a plan to what he thinks should be done to achieve
> his combination and end result. Every engine builder has their own
> methods and opinions. Of course opinions are just that and when shopping
> for engines or car builders and even part manufactures, you are making
> your ultimate choice on their reputation and as long as their reputation
> is good then I would trust their opinion. I think you have made some
> good choices here and I think you will be very happy in the end result.
> Any way UPS has turned us down for today and we are checking if we can
> drive these heads over to Fed Ex today.
> Happy Holidays,
> Billy
----- Original Message -----
From: "Rich Z" <rich@corvetteflorida.com>
To: "Bill Mitchell jr" <bmjr@theengineshop.com>
Cc: "Bryan Neelen" <sales@latemodelengines.com>; "Chris Harwood" <chris.harwood@motorsportsxtreme.com>
Sent: Thursday, December 24, 2009 4:13 PM
Subject: Re: Fw: LS Heads
> Thanks Billy,
>
> "I have no doubt in my mind that this repair will not be a factor in the
> future."
>
> So you are willing to stand behind that, in response to my stated
> stipulations for making that repair to the heads?
>
> Have a nice Christmas. I hope you can get those heads out today so this
> won't carry over to next week.
>
> Thanks,
>
> Rich Z.
>
----- Original Message -----
From: "Bill Mitchell jr" <bmjr@theengineshop.com>
To: "Rich Z" <rich@corvetteflorida.com>
Sent: Thursday, December 24, 2009 5:32 PM
Subject: Re: Fw: LS Heads
> Rich,
> Never made it out. We were ready by noon but Fedex or Ups were not
> accepting. A few of us will be in Tuesday and will get out then. Sorry.
> I'd do it Monday but will not be in town.
> Billy
>
----- Original Message -----
From: "Rich Z" <rich@corvetteflorida.com>
To: "Bill Mitchell jr" <bmjr@theengineshop.com>
Cc: "Chris Harwood" <chris.harwood@motorsportsxtreme.com>; "Bryan Neelen" <sales@latemodelengines.com>
Sent: Thursday, December 24, 2009 6:44 PM
Subject: Re: Fw: LS Heads
> Billy,
>
> Unless my stipulations are met, then I am not willing to accept "fixed"
> heads.
>
> To reiterate, they are:
>
>
>>>>>(1) I want the intake manifold ports and intake ports of the heads
>>>>>matched and ported so there is no restriction from misalignment
>>>>>whatsoever. And (2) I want that "fix" of the heads, with the
>>>>>understanding that it has been known upfront that this will be a turbo
>>>>>forced induction engine, to be warranted for life. Not anything else
>>>>>but the fact that if that "fix" fails, that I will be covered without
>>>>>that expense coming out of my own pocket. I'm not talking about
>>>>>everything on the heads being covered, just those bolt holes holding the
>>>>>intake manifold in place that are being adapted to fix this misalignment
>>>>>problem.
>
> I talked to Chris today and he said the only milling done to those heads was
> to square them up, and they were not extensively cut to adjust for
> compression. Again, please note that this is a low compression engine, so
> milling the heads to raise the compression, especially since those pistons
> are a reverse dome style to get the compression to 9.5:1, wouldn't have been
> necessary. Also, if those heads had been milled enough to affect the
> alignment of the intake manifold mounting bolts, then quite likely the
> matching of the head intake ports to the intake manifold would be equally
> affected. Hence stipulation #2 above.
>
> Perhaps it is very fortunate that those heads could not be shipped out
> today, as it appears that you purposely avoided answering my questions about
> those stipulations I mentioned in my previous emails. Perhaps an oversight
> on your part, but now you have time to answer them.
>
> I'm starting to feel that some dodging is taking place now. I don't really
> know all that much about engine building, but I can tell when someone is
> beginning to go into CYA mode and wanting me to be the fall guy as a result.
> If those heads were extensively machined as you state to throw those intake
> manifold bolts so far out of alignment, then what in God's name would happen
> if someone wanted to build a 12:1 compression engine using them? How far
> would THAT put those intake manifold bolts out of alignement? Sorry, but it
> just doesn't make sense to me that LME would have machined all that metal
> off of the mating surfaces of the heads to the block for a 9.5:1 compression
> engine.
>
> In effect, you are saying this is LME's fault for shaving too much metal off
> of those heads? That IS what you are claiming, you know. So tell me,
> exactly how much metal was taken off in relation to a stock LS7X head that
> you typically send out? Certainly both you and LME took those measurements.
>
> So I am requesting you to NOT send those heads until these stipulations
> listed here have been agreed to by all parties involved. I don't want an
> engine that is flawed from the beginning with mismatched intake ports or any
> other problems that the intake manifold bolt alignment issue may prove later
> on to just be the tip of the iceberg.
>
> If those stipulations are not agreed to and you ship out those heads anyway,
> then I am requesting that LME REFUSE delivery of those heads when they show
> up there and begin processing a FULL refund for the money Chris paid for
> that World Products engine in my behalf. I've waited this damn long because
> of this screw up, so I can certainly wait for an engine to be built using
> another block and heads from another supplier. So in essence, if this can't
> be done right for me, no, I'm NOT spending $16K for something jury rigged
> and patched because of a flaw that World Products isn't willing to own up
> to. And I'll be perfectly honest, I really resent this entire crappy
> situation taking place for something I had been so looking forward to.
>
> Yeah, that's right, I'm getting PISSED about this now...
>
> And in case you missed it above:
>
> DO NOT SEND OUT THOSE HEADS UNTIL MY STIPULATIONS HAVE BEEN AGREED TO! THEY
> ARE NOT ACCEPTABLE WITHOUT THOSE STIPULATIONS BEING MET!
>
> Rich Z.
I find it hard to believe that they could not perform a tolerance analysis, to determine the outcome of the proposed machining.
Take your $16K back and walk....just my opinion.........
Also, why are you dealing with the other vendors, you paid your engine builder to build something that he suggested, he should get this all squared away with his vendors.
In a way I agree with you, but I'm kind of a hands on kind of guy who doesn't like to delegate important decisions. I like to hear the scoop directly from the horse's mouth. I don't think Chris minds much, as he is swamped with stuff and probably appreciates me taking point on this. Besides, the final decision rests with me anyway, and I would prefer having all the cards displayed on the table in order to do so.
I did send an email to my guy suggesting that we start working on alternative. Right now it appears to me that World Products is accusing LME of shaving too much off of those heads, causing this intake mounting problem. That should be easy enough to determine by comparing measurements of those heads with brand new World Product heads off of the shelf. The simple fact that it is unlikely that those heads would have been excessively milled to get a low compression of 9.5:1 should be pretty obvious even to my untrained brain.
I'm betting that Mr. Mitchell will simply ignore my email and send those heads out on Tuesday and then wash his hands of this. Leaving LME holding the hot potato. Depends on how much slack concerning my stipulations that LME is willing to take up. They could certainly do both, which makes them the ones saving the day on this and World Products left with a black eye. However, if both are not met, meaning NO ONE is willing to meet them, then yes, I want a refund. Or they can build me a suitable replacement engine using an RHS block and heads. If there are any excessive delays with option 2, then a refund will be necessary and the LS6 will go back into the car until I can figure out what to do. That will suck, but I don't see any other reasonable option to take.
You know, this REALLY does suck. This was supposed to be an exciting thing to do. A once in a lifetime build for my car that I would hope to remember fondly. Now it's just a damned nightmare. I know some people have said that I will look back on this and laugh, but quite honestly, I don't see it that way. It's getting to the point that every time I will see the name "Warhawk" it will have some very negative feelings welling up..
I wonder if another high-end engine builder would be able to shed some light on this?
In a way I agree with you, but I'm kind of a hands on kind of guy who doesn't like to delegate important decisions. I like to hear the scoop directly from the horse's mouth. I don't think Chris minds much, as he is swamped with stuff and probably appreciates me taking point on this. Besides, the final decision rests with me anyway, and I would prefer having all the cards displayed on the table in order to do so.
I did send an email to my guy suggesting that we start working on alternative. Right now it appears to me that World Products is accusing LME of shaving too much off of those heads, causing this intake mounting problem. That should be easy enough to determine by comparing measurements of those heads with brand new World Product heads off of the shelf. The simple fact that it is unlikely that those heads would have been excessively milled to get a low compression of 9.5:1 should be pretty obvious even to my untrained brain.
I'm betting that Mr. Mitchell will simply ignore my email and send those heads out on Tuesday and then wash his hands of this. Leaving LME holding the hot potato. Depends on how much slack concerning my stipulations that LME is willing to take up. They could certainly do both, which makes them the ones saving the day on this and World Products left with a black eye. However, if both are not met, meaning NO ONE is willing to meet them, then yes, I want a refund. Or they can build me a suitable replacement engine using an RHS block and heads. If there are any excessive delays with option 2, then a refund will be necessary and the LS6 will go back into the car until I can figure out what to do. That will suck, but I don't see any other reasonable option to take.
You know, this REALLY does suck. This was supposed to be an exciting thing to do. A once in a lifetime build for my car that I would hope to remember fondly. Now it's just a damned nightmare. I know some people have said that I will look back on this and laugh, but quite honestly, I don't see it that way. It's getting to the point that every time I will see the name "Warhawk" it will have some very negative feelings welling up..
That being said, you're in everyone's nightmare: I truly hope this has a happy ending from you: as all have said, it appears someone is checking out and is trying to blame lots of other people for the problems. Hopefully it'll be a happy new year shortly into it for you and you'll be motoring along in your twin turbo 427 vette.
And yes, all the cubic inches are totally worth it.
That being said, you're in everyone's nightmare: I truly hope this has a happy ending from you: as all have said, it appears someone is checking out and is trying to blame lots of other people for the problems. Hopefully it'll be a happy new year shortly into it for you and you'll be motoring along in your twin turbo 427 vette.
And yes, all the cubic inches are totally worth it.
Yeah, this hindsight thing is a real beetch.... I really can't say that I could recommend anyone to do this sort of thing. I certainly never will again.





















