[DeTomaso] Valve train

[Thomas Tornblom]

2011-03-23 02:00, Tony DiGiovanna skrev:
> Confirm that you do not have the moroso oil restrictor kit installed in the
> bottom end of the block.  Its not supposed to be compatible with hydraulic
> lifters, flat or roller.  Opinions vary.  Also, confirm the lifters aren't
> rising high enough in their bores to lose oil pressure in the lifter supply
> circuit.

The Moroso kit works fine with hydraulic lifters if you skip the single 
large restrictor. The small restrictors restricts oil to the cam 
bearings, and have no effect on the oil pressure to the lifters or valve 
train.

http://www.moroso.com/catalog/images/22045_inst.pdf

Thomas (running the kit in my hyd roller engine)

>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of JDeRyke at aol.com
> Sent: Monday, March 21, 2011 12:04 AM
> To: gaino at earthlink.net; detomaso at realbig.com
> Subject: Re: [DeTomaso] Valve train
>
> In a message dated 3/20/11 5:44:13 PM, gaino at earthlink.net writes:
> snip.....
>> Then a push rod came out from under a rocker, or off a lifter.  No
>> damage, I put it back...  what gives... ? not enough spring pressure?  I
> have a
>> 6000 rpm limit,, never hit it.. Ideas. should I be able to hear the valve
>> train workin?
>>
> When setting valve lash or hydraulic lifter preload, its possible to hang a
> pushrod tip on the top outer edge of a lifter, and adjust everything there.
> Then under load, it pops off- sometimes out, sometimes into its socket
> where it rattles around from too much clearance. I personally adjust both
> solid
> and hydraulic lifters old-school- with the engine running at idle. Its
> painful and messy to do this way, but you get to see and touch the valves&
> pushrods while they're working, and a hung pushrod will be immediately
> obvious
> from it's different rocker angle in operation. You got lucky if nothing was
> damaged. Go buy yourself a lottery ticket....
> Whether the valvetrain is noisy or not depends a bit on the cam&  its type.
> My fast-bleed hydraulic flat-tappet lifters are as noisy as some solids at
> idle.
> Your problem may also have been a broken or missing inner valve spring or
> damper (if you're using such). The inners&  flat dampers are difficult to
> see
> fully assembled, especially if you're running a stud girdle (desirable on
> 351-Cs). Use the paper-clip checking method on that particular spring set to
>
> detect a defective spring by poking it and looking for any motion. A normal
> human will not be able to move anything by hand in a spring-set unless its
> busted. I'd disassemble that spring-set clear down to the head if you have
> further trouble with that valve. All this can be done with difficulty&  the
> right tools with the engine in the car. Good luck- J Deryke
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>
> DeTomaso mailing list
> DeTomaso at list.realbig.com
> http://list.realbig.com/mailman/listinfo/detomaso
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>
> DeTomaso mailing list
> DeTomaso at list.realbig.com
> http://list.realbig.com/mailman/listinfo/detomaso
>
> !DSPAM:4d894642156611209923907!
>


-- 
Real life:   Thomas Törnblom             Email:	   thomas at hax.se
Snail mail:  Banvallsvägen 14            Phone:    +46 18 32 31 18
              S - 754 40 Uppsala, Sweden  Cellular: +46 76 209 8320