[Roadsters] head bolts

[Stan Chernoff]

The ARP part numbers that JH provided are for the R-16 engine.  These 
studs are suitable for both the SAE and metric engines.

The original question was about a 2L engine.  It seems that something 
happened to the engine that caused the "Compression loss".  If 
hardened steel washers were used during assembly with either bolts or 
studs and the head was torqued properly and then retorqued  after 
several heat cycles there should be no compression loss.  There are 
other components such as valves that could fail and cause compression 
loss.  A genuine Nissan head gasket will usually not fail in a short 
time.  It is necessary to have the block and the head flat within 
factory limits in order to obtain reliable performance.

Stan
====

At 08:45 AM 8/1/2013, DatsunParts.com, Inc. wrote:
>The head stud numbers you list are incorrect and are not 2000 head stud
>part numbers,
>
>Dean
>
>
>On Thu, Aug 1, 2013 at 6:53 AM, <jh.bahn at verizon.net> wrote:
>
> > Do you heave head bolts (usual case) or head studs fastened with nuts?  If
> > the head has been overly milled (that would usually case come piston slap
> > and head or valve damage) you might want to try studs.
> >
> > Head Stud
> > ARP        AP5.000        7/16b  dia. 5 or 5-1/4 in. long; coarse thread
> > for block and fine thread for nut
> > ARP        AP5.250
> > Nut
> > ARP        10-APN12-1
> > Washer
> > ARP        10-APN1316N
> >
> > 'Course ARP also makes head bolts.   http://www.arp-bolts.com/
> >
> >
> > -----Original Message----- From: jamie tousignant
> > Sent: Thursday, August 01, 2013 2:30 AM
> > To: datsun-roadsters at autox.team.**net <datsun-roadsters at autox.team.net>
> > Subject: [Roadsters] head bolts
> >
> > hey anyone have experience with head bolts and washers  to take up the
> > difference in a head?after being surfaced
> > i have a 2litre that has compression loss after less than 1200 miles on it
> > since rebuild  of  and notice the builder used washers
> > under the head bolt nuts it was  5 on one and 4 on another  down to 2 in
> > the
> > middle  which i believe would cause the  pressure to be different
> > when being tightened  ? has anyone had their studs threaded longer to
> > remove
> > the need to do the washer trick?
> > i know you can purchase shims for the towers to take up the slack if needed
> > but  am struggling to work out a solution
> > for this problem
> > ______________________________**__________