Shell Optimax does the job, and at 90 cents a litre is a lot cheaper
Still not thesame though...
Regards
Brad HALLETT
http://www.powerup.com.au/~bhallett
Proudly Endorsing:
...DATRATS...
http://203.33.35.34
Datsun Dedicated
For Nissan Motorsport Components
Professional Budget Priced competition equipment
Contact Errol SMITH
email: [EMAIL PROTECTED]
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Craig Overend
Sent: Thursday, October 05, 2000 1:13 AM
To: [EMAIL PROTECTED]
Subject: Re: VG30 Piston pin height?
hmmmm I can smell the Avgas. Pity CAMS don't allow anything better with
faster burn charactisitcs. Avgas is made for planes not cars. Sorry bout
that, had to winge.
Craig.
Brad HALLETT wrote:
>
> 12:1
>
> Regards
> Brad HALLETT
> http://www.powerup.com.au/~bhallett
>
> Proudly Endorsing:
> ...DATRATS...
> http://203.33.35.34
> Datsun Dedicated
> For Nissan Motorsport Components
> Professional Budget Priced competition equipment
> Contact Errol SMITH
> email: [EMAIL PROTECTED]
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Heath
> Sent: Friday, September 29, 2000 11:48 PM
> To: [EMAIL PROTECTED]
> Subject: Re: VG30 Piston pin height?
>
> what compression ratio r u running Brad?
> around 13:1 . 14:1?
>
> Heath
> ----- Original Message -----
> From: "Brad HALLETT" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, 29 September 2000 7:00
> Subject: RE: VG30 Piston pin height?
>
> > That is great that you can sorce VG30 pistons like that. I am still
going
> > to stick with forged slugs as they are just more reliable for my setup.
> My
> > engine will be racing and rallying so it will be required to handle a
> large
> > range of temperatures and sever rev changes, as well as cope with high
> > compression. Ceramic coating is a good idea, and if you talk to the
boys
> > right they may also do your extractors which makes quite a difference.
> >
> > By the way I couldn't really afford the head either but I wasn't going
to
> > let the chance slip by this time!
> >
> > Keep me posted
> >
> > Regards
> > Brad HALLETT
> > http://www.powerup.com.au/~bhallett
> >
> > Proudly Endorsing:
> > ...DATRATS...
> > http://203.33.35.34
> > Datsun Dedicated
> > For Nissan Motorsport Components
> > Professional Budget Priced competition equipment
> > Contact Errol SMITH
> > email: [EMAIL PROTECTED]
> >
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Craig Overend
> > Sent: Friday, September 29, 2000 1:46 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: VG30 Piston pin height?
> >
> >
> > Brad,
> > I posted Lindsay Siebler at Pistons auto parts in Vic
> > <[EMAIL PROTECTED]> regarding the oversize VG30 pistons and his
> > reply is below.
> >
> > Hi Craig
> > 300 zx pistons are avail in 1.00mm They have a flat top with 2 offset
> > valve
> > reliefs. Are circlip type with 21.00mm pin and crown height is 32.00mm.
> > They will cost you with chrome rings $299.00 incl gst
> > Lindsay
> >
> > While I agree they won't be as good as forgies they're probably the next
> > best thing. I was considering having the piston tops ceramic coated
> > aswell, which would reduce crown temps by approx 7% for added
> > reliability. For $299 they are a lot cheaper. Just depends what you want
> > to use them for. The forgies would suit your application better I agree.
> > I'm after something a little milder. I can't afford an FIA head! :(
> > I don't see a high CR being the problem as long as there is no major
> > detonation present, which results in huge cylinder pressure increases. I
> > consider high temperature at the crown and top ring land caused by
> > detonation, lean mixtures or inadequate cooling/lubrication more likely
> > the cause of failures. I thought of using an oil spray for under the
> > piston crown aswell as an option, not sure though. I've also thought
> > about running fairly tight piston to head tolerances to limit combustion
> > to a modified peanut chamber, which should reduce temps at the top ring
> > land and reduce combustion time.
> > I welcome any thoughts.
> >
> > Craig.
> >
> > Brad HALLETT wrote:
> > >
> > > Craig,
> > > I am getting 88mm flat top forged slugs with 33mm compression height
> from
> > > Australian Precision engine parts. $220+GST each including sealed
power
> > > gapless rings, pins and circlips. Good price and excellent product.
I
> > > looked for VG30 pistons but had a lot of trouble sorcing them and I do
> not
> > > think they will handle high CR.
> > >
> > > Regards
> > > Brad HALLETT
> > > http://www.powerup.com.au/~bhallett
> > >
> > > Proudly Endorsing:
> > > ...DATRATS...
> > > http://203.33.35.34
> > > Datsun Dedicated
> > > For Nissan Motorsport Components
> > > Professional Budget Priced competition equipment
> > > Contact Errol SMITH
> > > email: [EMAIL PROTECTED]
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED]
> > > [mailto:[EMAIL PROTECTED]]On Behalf Of Craig
Overend
> > > Sent: Wednesday, September 27, 2000 1:51 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: VG30 Piston pin height?
> > >
> > > Eddie,
> > > they're for an L series. I am after some 88mm flattops with
> about
> > 32mm
> > > pin height. I saw they were 87mm standard and thought they may be a
good
> > > piston if they are available in 1mm oversize at the right pin height.
> > > I'd prefer not spending big money on custom pistons if I can avoid it.
I
> > > found some really good pictures of them at
> > > http://www.overboost.com/story.asp?id=129
> > > I see what you mean about the valve reliefs. I will be machining my
own
> > > reliefs in whatever pistons I get anyway.
> > >
> > > Thanks,
> > > Craig.
> > >
> > > [EMAIL PROTECTED] wrote:
> > > >
> > > > Craig, The dish isn't actually a dish just the valve cutouts which
> > > amounts
> > > > to 1cc so it's not really neccesary to machine them. I think the pin
> is
> > > 21mm
> > > > same as other Nissan engines. There are two types of piston, one
uses
> a
> > > > pressed in pin and the other has a fully floating one but I am not
> > certain
> > > > of the difference in the rings. These specs are from the Z31 (300ZX)
> > > > non-turbo and I believe are the same for the Y30 (300C) but as we
> never
> > > got
> > > > the V6 in anything else here I can't be sure of the pathfinder
specs.
> > What
> > > > are you planning with a VG?
> > > >
> > > > Cheers,
> > > > Eddie
> > > > England
> > > > 510, KP710, B10, KB110,
> > > > B110, B120, J710, H230,
> > > > G620, P330, SRL311, C30,
> > > > VBF10, F10, S12
> > > > [EMAIL PROTECTED]
> > > > pics at www.ratdat.com
> > > >
> > >
> >
> >
> >
>
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