[DeTomaso] Valve Lash Adjusting Tool

Janne Mäki-Petäjä janne.makipetaja at gmail.com
Mon Sep 29 01:43:01 EDT 2014


I'll add something to the mix. My buddy recommended this, but I haven't 
yet tried, so bit of hearsay for now.

He told me that ARP perma-loc adjusting nuts work a lot better than 
anything else. Both more positive to adjust and keep the lash better. 
They have quality threads and flat machined hex adjusting nut end 
(normally the end is concave and eats its way to the end of the stud).

Made me realize I use ARP even on valve covers, but not in the 
functional part like adjuster, where I have cheap stuff probably from 
far east...

-Janne

29.9.2014 7.01, Mikael kirjoitti:
> Are we talking normal hydraulic lifters and roller rockers? Then I don't recognize any of the procedures described. Here's how I do it
>
> The nut is for adjusting the rocker, the Allen bolt is only for locking the nut in place
> 1. Adjust rocker by turning nut. Make sure Allen bolt is turned up so it doesn't interfere *)
> 2. Turn down Allen bolt, while holding nut, until resistance, tighten it slightly
> 3. Use both tools to turn nut and Allen bolt down at the same time. This tightens the combo, no more than 1/16 turn is needed.
>
> I do each step on all 16 before going to the next step.
>
> *) lately I've gone from setting rockers by the "feel for lash by turning pushrods" method to doing it with engine running. Back off until tick, turn 1/4. Oil will spray, so have cloths over your headders. Gives a more consistent result IMO
>
> About the tool: If I did this every day, I would by it, it's especially good for step 3, but as Julian says, it can't do anything your normal tools can't
>
> Mikael
>
> Sent from my BlackBerry Q10
>    Original Message
> From: Jerry Knotts
> Sent: søndag den 28. september 2014 20.24
> To: detomaso at poca.com
> Subject: Re: [DeTomaso] Valve Lash Adjusting Tool
>
>
> The other bright spot to the tool is you only have to get one had to it
> to adjust the allen screw and hold it steady. the wrench doesn't fall
> off and the snug procedure tells the holding hand if it is still in
> place. No guess about any residual movement from the final tightening.
>
> jerry knotts
>
>
> On 9/28/2014 11:55 AM, Mike Drew via DeTomaso wrote:
>> Charlie,
>>
>> I have one of these tools for my 427 Cobra and it works great.
>>
>> You seem to misunderstand the procedure for setting valve lash. Lash is adjusted using the Allen bolt on the inside. The position of that bolt is retained by tightening the nut on the outside.
>>
>> In practice, with this tool you set your valve lash, then hold the inner handle stationary to preserve the lash while using the outer handle to tighten the nut which locks it in position. If you allow the inner portion to rotate as you tighten the nut, you change the lash....
>>
>> Mike
>>
>> Sent from my iPhone
>>
>> On Sep 28, 2014, at 5:09, Charles McCall <charlesmccall at gmail.com> wrote:
>>
>>> Has anyone used a tool like this to set their valve lash with solid
>>> lifters?
>>> [1]http://www.ebay.com/itm/COMP-CAMS-3-16-Valve-Lash-adjuster-wrench-to
>>> ol-5304-full-bore-/361063973727?pt=Motors_Car_Truck_Parts_Accessories&h
>>> ash=item541117035f&vxp=mtr
>>> A
>>> Can you tighten down the rockers sufficiently using the allen wrench
>>> without tightening the nut that sets lash? Currently, in order to
>>> tigthen the center allen bolt I need to tighten the surrounding nut as
>>> well. Despite having lived with this engine for 14 years now, I've
>>> never gotten the trick of doing this on the first shot and inevitably
>>> have to loosen and tighten several times before I can get the lash to
>>> be where I want it.
>>> A
>>> This tool would allow me to set EXACTLY the desired lash, if just
>>> tightening the allen bolt is sufficient to hold everythingin place...
>>> A
>>> Thanks!
>>>
>>> References
>>>
>>> 1. http://www.ebay.com/itm/COMP-CAMS-3-16-Valve-Lash-adjuster-wrench-tool-5304-full-bore-/361063973727?pt=Motors_Car_Truck_Parts_Accessories&hash=item541117035f&vxp=mtr
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>
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