BritishV8 Forum: Re: Narrowed Chevy rods

Wotland
Wotland Wotland

(105 posts)

Registered:
01/07/2008 08:14AM

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Narrowed Chevy rods

Posted by: Wotland
Date: January 16, 2009 09:22AM

Hi,

I recently bought an set of Crower Maxi-Lite rods for one project.

http://i74.servimg.com/u/f74/11/14/83/96/crower10.jpg

An stock P76 rod and the Crower.

http://i74.servimg.com/u/f74/11/14/83/96/crower11.jpg

With ARP 2000 bolts

http://i74.servimg.com/u/f74/11/14/83/96/crower12.jpg

Now need to be machined.

I have may be an stupid question but when chevy rods are narrowed to suit RV8/Buick 215 crank, they are machined both sides or only on one side ?

If they are only machined on one side they become asymetrical like offset rods of later 4.2 and 4.0/4.6.

Thank for your help.

Dimitri

BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar

Re: Narrowed Chevy rods

Posted by: BlownMGB-V8
Date: January 16, 2009 10:54AM

Better do both sides Dimitri. The stock rods generally have no offset.

Jim

Wotland
Wotland Wotland

(105 posts)

Registered:
01/07/2008 08:14AM

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Re: Narrowed Chevy rods

Posted by: Wotland
Date: January 19, 2009 01:41PM

thank Jim.

As I understand bearing need to be machined in same time as the rod.

BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

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Re: Narrowed Chevy rods

Posted by: BlownMGB-V8
Date: January 19, 2009 02:30PM

Check to see if you can use the smallblock Buick or Rover bearing shells. If you can then there is no need to machine them. Also, there is usually generous side clearance at the piston, enough to fudge it one way or the other if you have to.

Jim

V8Tech
Shaun O'Donnell

(19 posts)

Registered:
01/12/2009 11:37AM

Main British Car:

Re: Narrowed Chevy rods

Posted by: V8Tech
Date: January 19, 2009 06:11PM

Clevite do a bearing for the Rover V8 that will fit nicely ... either that or original vander's but they are rare amd expensive.

Shaun

hoffbug
Tony Hoffer
Minnesota
(323 posts)

Registered:
10/15/2007 05:25PM

Main British Car:
Olds 215 EFI

Re: Narrowed Chevy rods

Posted by: hoffbug
Date: January 19, 2009 06:17PM

I love capscrewed rods.. There is probably as much or more clearance at the shoulder than the P-76 rod and look at how much more beef there is on the Crower rod.

Wotland
Wotland Wotland

(105 posts)

Registered:
01/07/2008 08:14AM

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Re: Narrowed Chevy rods

Posted by: Wotland
Date: January 22, 2009 06:41AM

In my case I can't use Rover bearing because my rods are for 2.1'' rod journal size. So I intend to use rod bearing spacers aviaible in several sizes:
CR867HP SBC 2.00 PIN, 2.100 ROD
CR867HP+001 CONV RACING ROD BRG 2.100/
CR867HP009 CONV RACING ROD BRG 2.100/
CR867HP010 CONV RACING ROD BRG 2.100/
CR867HP011 CONV RACING ROD BRG 2.100/
CR867HP019 CONV RACING ROD BRG 2.100/
CR867HP020 CONV RACING ROD BRG 2.100/
CR867HP021 CONV RACING ROD BRG 2.100/
CR867HP030 CONV RACING ROD BRG 2.100/

BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar

Re: Narrowed Chevy rods

Posted by: BlownMGB-V8
Date: January 22, 2009 08:51AM

Be real careful about going oversize on your rod bearings, especially with aftermarket rods. Rod to cam clearance is tight and can really limit your valve lift, especially with the larger stroke engines such as the 340/350. I had to clearance my rods on the top shoulder and will need a reduced base circle cam for any valve lift approaching .500", so make sure to check that. The #6 and 8 rods are the worst.

Jim

NixVegaGT
Nicolas Wiederhold
Minneapolis, MN
(659 posts)

Registered:
10/16/2007 05:30AM

Main British Car:
'73 Vega GT 4.9L Rover/Buick Stroker

authors avatar

Re: Narrowed Chevy rods

Posted by: NixVegaGT
Date: January 22, 2009 09:47AM

Always with the cam, Jim! LOL! good point.

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