[DeTomaso] Is the Head dead yet

[Charles McCall]

>
> -snip-



> Are they closed chamber heads?  If they aren't and you haven't spent a lot
> of money on them, you should consider looking for some CC heads.

-snip
************Good advice. Bare cc heads aren't expensive (relatively) and
would be worth rebuilding.

>
>
> Make sure the guide plates are adjusted properly, and nothing is binding
> or
> rubbing that shouldn't rub.  I had a set of guide plates that rubbed most
> of
> the intake pushrods at the bottom of the U on the guide plates.  I didn't
> notice it, and ended up with 2 or 3 broken guide plates.

************Another good point. My engine woes from several years ago came
from various problems. One of them was the fact that the guide plates were
not properly manufactured, which lead to side-loading the pushrods. The
mechanic cut them apart and welded them back together to properly place the
groove.

>
>
> In my opinion (I are not an expert), the majority of the cases of bent
> pushrods are due to oil starvation to hydraulic lifters.  The lifters
> partially collapse causing too much clearance.  One or more pushrods drop
> out of the cups on the rockers.  Once the lifters pump back up, the
> springs
> bind and the pushrods bend.  That's one reason I like solid lifters - no
> surprises.

****That and they make cool noises :-)

>
>
> Will.
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> On
> Behalf Of Mike Murray
> Sent: Friday, January 18, 2008 8:58 AM
> To: pantera forum
> Subject: [DeTomaso] Is the Head dead yet
>
> Got a call back from the machine shop yesterday saying that my iron heads
> are good to freshen up with a valve job, new harden seats, seals and some
> porting. Question: I want to change to roller rockers and new push rods
> suggestions on brands that will work for primarily street use. I have a
> mild
> cam with no known data on type.   Thanks, Mike Charleston,SC
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