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rods and caps 06 s40

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
rgh1835
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Year and Model: s40 2006
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rgh1835

rods and caps 06 s40

Post by rgh1835 » Wed Jan 23, 2019 9:30 am

in tearing down my 2.4, noticed the rods have no notches to retain rod bearings. also the bearings where 90 degrees to the rods. is this normal? I don't see how it keeps bearings from turning inside rods. input please.

jimmy57
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Year and Model: 2004 V70R GT, et al
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jimmy57

Re: rods and caps 06 s40

Post by jimmy57 » Wed Jan 23, 2019 12:02 pm

The tangs are for humans to align bearings robots don't need then or do humans with install fixture. If the engine runs dry of oil the tangs make about one revolution difference in when the bearing shell spins in rod. The caps are broken caps on those rods and the orientation is CRUCIAL or the rod caps don't close up and crush bearings and they will turn. Broken cp rods are almost universally used today even in diesels and the manufacturing method doesn't readily allow the depression for the bearing tangs.
The rod are trash if the caps are put on wrong as it damages the grain structure of the rod and cap and they will close together.
The bearing shells are installed centered left-right in rod and cap and with edges at cap and rod edges.

rgh1835
Posts: 14
Joined: Mon Nov 02, 2015 5:05 pm
Year and Model: s40 2006
Location: carrollton tx
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rgh1835

Re: rods and caps 06 s40

Post by rgh1835 » Thu Jan 24, 2019 7:07 pm

thanks for reply, first i have heard of this install fixture. is it necessary,or can you get by without it? i marked orientation of rods when disassembling the engine.

jimmy57
Posts: 6550
Joined: Fri Nov 12, 2010 9:25 am
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
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jimmy57

Re: rods and caps 06 s40

Post by jimmy57 » Thu Jan 24, 2019 8:01 pm

There is no special tool fixture but if you assemble engines all day long with a time goal you get a spacer deal for use at factory. You just install them centered in rod and cap.

rgh1835
Posts: 14
Joined: Mon Nov 02, 2015 5:05 pm
Year and Model: s40 2006
Location: carrollton tx
Has thanked: 0
Been thanked: 0
United States of America
rgh1835

Re: rods and caps 06 s40

Post by rgh1835 » Fri Jan 25, 2019 8:17 pm

thanks again jimmy 57.

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