Piston clearance and rod info

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Piston clearance and rod info

Postby h-bot » Sat Feb 01, 2003 3:12 am

From: jamesrkays_REMOVE_402757_THIS_@yahoo.com

What kind of piston clearances are you using for a
linered block?

What kind of rod lengths are you using for non stock
applications on a 2000 cc engine?

Are the stock cosworth rods a match for any of the
chevy V8 rods?
Thoughts????
Jim

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Piston clearance and rod info

Postby h-bot » Sat Feb 01, 2003 3:39 am

From: doctorduke_REMOVE_206876_THIS_@yahoo.com

--- In <a href="/group/cosworthvegas/post?protectID=219233066105193209050199029077192253163098100009128121188190230091025019053061151110147">cosworthvegas@yahoogroups.com</a>, jim kays <<a href="/group/cosworthvegas/post?protectID=045166014056099209213098164219114164071048139">jamesrkays@y...</a>>
wrote:
> What kind of piston clearances are you using for a
> linered block?
>
> What kind of rod lengths are you using for non stock
> applications on a 2000 cc engine?
>
> Are the stock cosworth rods a match for any of the
> chevy V8 rods?
> Thoughts????
> Jim

The OEM piston skirt clearance listed in the shop manual is .002-.003"
and these should be maintained in a sleeved engine with a high silicon
forged aluminum pistons similar to the OEM pistons.

The OEM 5.7" rods are fine for a 3.16" stroke engine or the longer
stroke Vega 140. Rod length is mostly a non-sequitur - lengthening
the rod centers a few tenths of an inch one is not going make a
significant change in the character of engine output.

The CV and Vega rods are the same dimensions as the inline six and old
four cylinder Chevy II/Iron Duke. They have the same center distance
as the SB rods, but the big end is wider - 1.02" versus .980" for a SB
rod if memory serves.

Duke




[This is message #10482 by user doctorduke on Yahoo! Group Cosworth Vegas: http://groups.yahoo.com/group/cosworthvegas ]
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