Nothing major as far as metal removal. Since the runners can be a bit
thin we polished them up real well and removed all cast flashing from
them. The valve bowls were blended and the valves were back cut to
give a bit more flow. The intake got the runners shortened and the
exhaust manifolds were opened up by removing the ring at the flange in
them. Nothing major like head shaving or the such was done.
Not sure how good of a recording I can get of it, but if it would help
I can give it a go and send up to my ftp.
WiLieR
- Original message -
You may want to take this into either a dealership or a reputable
shop to get a second opinion on the noise. Last question though: you
mentioned some porting work done on the heads...what was exactly
done? - Bernd
On 5/5/07, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
>
> You may want to take this into either a dealership or a reputable shop to
> get a second opinion on the noise. Last question though: you mentioned
> some porting work done on the heads...what was exactly done?
>
> - Bernd
>
> -----Original Message-----
> From: WiLieR[SS] [mailto:waffle787@gmail.com]
> Sent: Saturday, May 05, 2007 12:13 AM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: RE: Timing 3.9 v-6
>
>
> I haven't put a mechanical dial gauge on the oil pressure, but there is
> plenty of flow at idle. Enough that I have to use valve covers with the
> tops removed to keep oil from pouring out of the back corner of the heads at
> idle. The dash gauge shows an increase in oil pressure when the rpms is
> raised, so I am assuming that the pressure is fine there as well. The
> rockers are torqued to 21 ft-lbs and have been verified by two different
> torque wrenches. The lifters are brand new stock replacement roller lifters
> with about 500 miles on them now.
>
> WiLieR
>
> On 5/4/07, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
> >
> > Just checking.
> >
> > To be honest, without actually hearing it up close, it's hard to say
> > what the tapping noise is. If you know the valvetrain is all in order
> > (TQ'd to spec on the rockers), what's the oil pressure at idle, 2000, and
> 4000rpm?
> > Also, what about the lifters...are they the stock ones and how many
> > miles on them?
> >
> > - Bernd
>
>
>
>
This archive was generated by hypermail 2b29 : Fri Jun 01 2007 - 09:06:10 EDT