destroking

Great info guys I really appreciate it. i do have a couple spare starion blocks so i can get the crank out of it and get it measured. If the ebay crank fits that'll be great. I take it the stock pistons will be too short? and the compression will be lower? If so thats not a bad thing I can run more boost. Then again 8.5:1 isnt bad either. JvL is John i take it haha, If you could sir pm, or email me or give me a call what ever is easier for you, and we can mill over the pistons "no pun intended"

absolute Wrote:
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> Great info guys I really appreciate it. i do have
> a couple spare starion blocks so i can get the
> crank out of it and get it measured.

A $16 electronic vernier is good enough then you know for certain what you have and have hours of fun measuring the other stuff like valve diameters, cam lift, valve spring ID and Valve spring wire diameter (I mention that cause I have seen WAY DEAD valve springs on these).

If the ebay
> crank fits that'll be great. I take it the stock
> pistons will be too short?

OK what we're doing is using the 2,6 diameter (91.1) and the 2,0 compression height---center of pin to top of the piston.

and the compression
> will be lower?

That all depends on the crown configuration.
The pistons I can do for the modest price are flat tops.
For a turbo application you need to decide what compression ratio you want----and that is dependant on the gas you will ALWAYS run, and of course how much boost you want to run.
And that all depends on the ability to optimise fuel and ignition.

What's the management system you intend to use.

If so thats not a bad thing I can
> run more boost. Then again 8.5:1 isnt bad either.

No but I tend to choose no higher than 8.0.
it's called MARGIN of SAFETY.



> JvL is John i take it haha, If you could sir pm,
> or email me or give me a call what ever is easier
> for you, and we can mill over the pistons "no pun
> intended"

I'm in Sleezattle, and thats Pacific Standard Time or 2 hours behind ya, so give me a call when you want but no earlier than 0900. Saturday/Sunday if fine, no rest for the wicked.

And I may be getting old but don't call me sir.
Yo dude, hey mang, Ola muchacito! hördu din tjock skalliga skitstövel, bleeding Belgian Bastard all work
but you say sir and I'll be looking around for somebody with grey hair.

Phone is two Oh Six 43 one 9696

---

John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

I believe Steve Millen ran a Starion at Oregon years ago with a 2.3 and it was amazingly quick in his hands. But that was a while back and my memory isn't so reliable...

i checked the specs, the crank will work.



2.6Liter G54B, 2555cc/155.9cid, , SOHC, L4, 8valve

84-89 Conquest Turbo

Bore: 3.5875" (91.123 mm)

Stroke: 3.858" (97.993 mm)

Main Journal: 2.3614-2.3622" (59.98-60. mm)

Rod Journal: 2.0858-2.0866" (52.979-53. mm)

Crank End Play: .002-.007" (.051-.178 mm)

New Head Thick.: 3.5430" (89.992 mm)

Min. Head Thick.: 3.5230" (89.484 mm)

Head Bolts: 65-72 ft/lbs Cold, 73-79 ft/lbs Hot

C. Rod Dia.: 2.2047-2.2055" (55.999-56.02 mm)

Connecting Rod: 33-34 ft/lbs

Intake Lash: .015-.031" Dry

Exhaust Lash: .015-.031" Dry (.381-.787 mm)

Idle Oil Pressure: 4 psi Min.

Max Oil Pressure: 50-64 psi @ 2000 rpm

Compression: 8.7:1 Ratio

Piston Ring Gap: Top .012-.020", 2nd .010-.016", Oil .012-.031"

Main Bearing: 55-61 ft/lbs

hey John i'll give you a call tomorrow ! do you happen to have any pics of the motor?