[DeTomaso] I need some advice from you Fordies

Mon Jan 18 13:47:27 EST 2010

What creates the sideload if the rocker is swiveling?

Tomas

----- Original Message ----- 
From: "Charles McCall" <charlesmccall at gmail.com>
To: "'Dave Londry'" <davel at emspace.com>; "'John Taphorn'" <jtaphorn at kingwoodcable.com>
Cc: <detomaso at realbig.com>
Sent: Monday, January 18, 2010 7:33 PM
Subject: Re: [DeTomaso] I need some advice from you Fordies

>I had all kind of engine problems in 2001 when my engine was rebuilt. It
> would bent pushrods every 500 miles, and Mr. Drew and I suffered
> tremendously on a cross-Europe trip that ended with the car on a flatbed and
> me in a rental car. 
> 
> The causes were many, but one of them was that the stock guideplates were
> sideloading the pushrods... the mechanic cut them apart and rewelded them so
> that they would do their job - "guide" but not sideload. There were other
> problems that contributed to a short engine life, but I would recommend
> always checking to make sure that the guideplates aren't binding the
> pushrods or you could have problems...
> 
> Charles McCall
> 1985 DeTomaso Pantera GT5-S #9375
> "Raising Pantera Awareness Across Europe"
> http://www.poca.com/index.php/gallery/?g2_itemId=2323
> -----Mensaje original-----
> De: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] En
> nombre de Dave Londry
> Enviado el: lunes, 18 de enero de 2010 19:07
> Para: John Taphorn
> CC: detomaso at realbig.com
> Asunto: Re: [DeTomaso] I need some advice from you Fordies
> 
> Well damn. I wasn't going to think of that John.
> And I have a MIG that just sits around doing nothing.
> So you had one that wasn't damaged, but wouldn't line up with the stock 
> guideplate?
> 
> dave
> (rockershafts are less exciting)
> 
> John Taphorn wrote:
>> Dave
>>
>> If you own a MIG, the task is relatively easy.  I removed my 
>> guideplate, cut it in half with a sawzall.  Then refit the two pieces 
>> of the guideplate in the head and align them so as the rocker's roller 
>> tip are dead center on the valve stem tip.  Shielding the rest of the 
>> engine from potential weld splatter, tack the guideplate with your 
>> MIG.  Then remove the guideplate and finish your weld safely away from 
>> the engine.
>>
>> I did do mine before the engine was in the car and it certainly made 
>> it more accessible.  Remember to disconnect your MSD should you be 
>> using one.
>>
>> JT
>>
>> ----- Original Message ----- From: "Dave Londry" <davel at emspace.com>
>> To: "Will Kooiman" <wkooiman at earthlink.net>
>> Cc: <detomaso at realbig.com>
>> Sent: Sunday, January 17, 2010 8:56 PM
>> Subject: Re: [DeTomaso] I need some advice from you Fordies
>>
>>
>>> Will
>>> Yes there is a big difference in the centering of #8 intake & exhaust.
>>> No crack in the guide plate though, they all have that stamping mark
>>> through the 5 in the part number.
>>> No metal has come off the roller yet and the mark is in line with the
>>> edge of the valve stem,
>>> so I think it will be OK after I get it lined up. Bent pushrod is a
>>> good thought.
>>> Anyhow I'll take it off and have a good look. And I'll align them all.
>>>
>>> Any warnings beyond "don't drop hard shit down the oil drains"?
>>>
>>> Taking off the right cover is harder than I thought.
>>> It's pinned down by the support on the hard coolant line to the swirl 
>>> tank.
>>> Looks like I'm going to have to ask the coolant line to flex a little 
>>> bit.
>>>
>>> Next time it'll seem normal, but it's an adventure this time.
>>> Hard on the knees too.
>>>
>>> thanks for the advice.
>>> dave
>>>
>>> Will Kooiman wrote:
>>>> Wait a minute.  I just noticed how far #8 intake is off.  #8 exhaust 
>>>> looks
>>>> centered.  The guide plate also looks cracked - by the PN.
>>>>
>>>> Take it apart and see if anything is broken.
>>>>
>>>> It might be as simple as a bent pushrod.
>>>>
>>>> -----Original Message-----
>>>> From: Will Kooiman [mailto:wkooiman at earthlink.net]
>>>> Sent: Sunday, January 17, 2010 6:26 PM
>>>> To: 'detomaso at realbig.com'
>>>> Subject: RE: [DeTomaso] I need some advice from you Fordies
>>>>
>>>> It could be as simple as the guide plates being too far to one side.  I
>>>> spent a lot of time aligning my rockers.  I didn't have to 
>>>> cut/reweld them.
>>>>
>>>> Before you tighten the rocker stud, you can slide the guide plate 
>>>> left and
>>>> right (and up/down).  If you slide it to the left, the rocker tips 
>>>> slide to
>>>> the right - and vice versa.  You keep fudging with it until they're 
>>>> in the
>>>> center for both intake and exhaust.
>>>>
>>>> I don't know about the galling.  I'd guess it's due to oiling (lack
>>>> thereof).  One of the reasons I went with Crane Gold Race rockers is 
>>>> because
>>>> of comments I heard about how it handled oiling.  On one engine, I 
>>>> cut the
>>>> tops off of an old set of valve covers, and ran the engine.  If you 
>>>> try it
>>>> without valve covers, you'll shoot oil like a little oil well.
>>>>
>>>> I also spent a lot of time making sure nothing was rubbing or 
>>>> binding. Most
>>>> of my intake pushrods were rubbing the guide plate (in the wrong 
>>>> place -
>>>> they always rub on the edges).
>>>>
>>>> If it were me, I'd remove the rocker and inspect it more closely.  
>>>> If it's
>>>> discolored, it probably overheated.  I'd think a little blueing is 
>>>> okay, but
>>>> I'm not an expert.  If it has galling, I'd replace it for sure.  A new
>>>> rocker is cheaper than a new valve.
>>>>
>>>> I'd also check the alignment of the rockers - especially #8.  The 
>>>> rollers
>>>> should be centered on the valve stem.
>>>>
>>>> -----Original Message-----
>>>> From: detomaso-bounces at realbig.com 
>>>> [mailto:detomaso-bounces at realbig.com] On
>>>> Behalf Of Larry Finch
>>>> Sent: Sunday, January 17, 2010 5:29 PM
>>>> To: detomaso at realbig.com
>>>> Subject: [DeTomaso] I need some advice from you Fordies
>>>>
>>>> Is this the situation where sometimes the roller guides need to be
>>>> cut, sectioned and welded?
>>>>
>>>> I'm book learned, but have no first hand knowledge... ;-)
>>>>
>>>> Larry
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