[DeTomaso] More valvetrain for 6143

bill gaino gaino at earthlink.net
Thu Jan 21 12:31:40 EST 2010


I know this one.. The original FORD valves have 3 groove keepers. Another give away is, with the head off ...you can see FORD written on the intake valve.  Bill 1362 " I bought valves from Mark"

-----Original Message-----
>From: mark skwarek <ehpantera at yahoo.com>
>Sent: Jan 21, 2010 11:55 AM
>To: wkooiman at earthlink.net
>Cc: detomaso at realbig.com
>Subject: Re: [DeTomaso] More valvetrain for 6143
>
>I don't know how you can check your valves. If I don't know what they are I replace them.
>Mark
>
>--- On Wed, 1/20/10, mark skwarek <ehpantera at yahoo.com> wrote:
>
>
>From: mark skwarek <ehpantera at yahoo.com>
>Subject: Re: [DeTomaso] More valvetrain for 6143
>To: wkooiman at earthlink.net
>Cc: detomaso at realbig.com
>Date: Wednesday, January 20, 2010, 12:10 PM
>
>
>If you end up taking off the head, make sure you have 1 piece valves.
>Mark
>
>--- On Wed, 1/20/10, wkooiman at earthlink.net <wkooiman at earthlink.net> wrote:
>
>
>From: wkooiman at earthlink.net <wkooiman at earthlink.net>
>Subject: Re: [DeTomaso] More valvetrain for 6143
>To: "DeTomaso Forum" <detomaso at realbig.com>
>Date: Wednesday, January 20, 2010, 11:09 AM
>
>
>I agree about shaft rockers.  They're definitely a better design.  They're not necessarily the most cost effective (esp with canted valves), but they sure are better.
>
>>From the photos, it looks pretty obvious that something is bent.  Since it isn't a pushrod, my next guess is the rocker stud.
>
>I don't see how it could bend that way, though.
>
>The bad news is if the valve is bent or if the stem is damaged too much, you'll need to remove the head to fix it.  Of course, you knew that.  I'm here to state the obvious.
>
>-----Original Message-----
>>From: Thomas Tornblom <Thomas.Tornblom at hax.se>
>>Sent: Jan 20, 2010 1:25 AM
>>To: DeTomaso Forum <detomaso at realbig.com>
>>Subject: Re: [DeTomaso] More valvetrain for 6143
>>
>>Not that it will help now, but this is exactly the reason why I think 
>>the whole idea of guide plates is broken. A sloppy valve train guided by 
>>some sheet metal pieces rubbing against the pushrods. Even the early 
>>60:s Volvos had better designed (shaft mounted) rockers IMHO.
>>
>>I have an hydraulic roller and use the Ford bolt down roller rockers, 
>>shimmed to the proper preload. Everything is solidly mounted, and the 
>>rockers can't bounce around all over the tip of the valve stem, and 
>>there is nothing rubbing against anything.
>>
>>They are only recommended for hydraulic lifters, but I guess one could 
>>always make shims in various thicknesses and shim them to the correct 
>>height for a solid cam.
>>
>>Then again I was only wrenching small European engines when I was younger...
>>
>>Thomas
>>
>>Dave Londry skrev:
>>> The pushrods are straight within my measurement limit, which is the 
>>> granite tops in the kitchen.
>>> They also have a good spec - CompCams 7502 Magnum etc.
>>> http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=7502-16&Category_Code=ClevelandPushrods
>>> 
>>> The rockers are  CompCams - BB ford, cleveland or BB chev
>>> http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=1411-16&Category_Code=ClevelandRocker
>>> 
>>> The lifters should also be CompCams but I don't have one out yet.
>>> The pushrod aperture is about 15/32",
>>> Will a lifter come out through that??
>>> 
>>> OK the big news
>>> #5, 6 & 7 are clean. The worst misalignment is no more than 0.050
>>> #8 is a mess
>>> - the exhaust lifter is OK but the exhaust valve is peened away across 
>>> half the top of the stem
>>> http://www.poca.com/index.php/gallery/?g2_itemId=15208
>>> - the intake valve is OK but the intake lifter has a big bloody pit 
>>> hammered in the roller and the rollershaft is bent.
>>> http://www.poca.com/index.php/gallery/?g2_itemId=15214
>>> Here's one guess.
>>>     They threw it together and started it and it made a bitch of a racket.
>>>      They pulled it apart and found they didn't have the #8 exhaust 
>>> pushrod in place and it had made a big mess,
>>>      They swapped the intake & exhaust lifters and lined them up as best 
>>> they could in their @$#$-up state
>>>         and got it to quiet down - then pushed it out the door
>>> 
>>> So looks like the head has to come off and I'll need a new exhaust valve 
>>> and a pair of lifters.
>>> If anyone can imagine another choice for me I'm all ears.
>>> 
>>> Can't wait to see the left bank. (or the #8 exhaust lifter)
>>> Looks like I won't have to worry about emissions testing for a while.
>>> 
>>> ^%&#$#*&
>>> dave
>>> 
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>>
>>
>>-- 
>>Real life:   Thomas Törnblom             Email:  Thomas.Tornblom at Hax.SE
>>Snail mail:  Banvallsvägen 14            Phone:    +46 18 444 33 21
>>              S - 754 40 Uppsala, Sweden  Cellular: +46 70 261 1372
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