carbon fiber push rods and wrist pins

flyingwedge · Post by **flyingwedge** » Tue Nov 13, 2012 12:47 pm

Anyone used/using these ? I bought years ago and never installed. Is there a time limit, for the resin or duty cycles

Thanks, flyingwedge.

loudandproud · Post by **loudandproud** » Tue Nov 13, 2012 3:14 pm

Wait, carbon fiber wrist pins?

I need to see pictures of these...

nhrastocker · Post by **nhrastocker** » Tue Nov 13, 2012 4:13 pm

flyingwedge wrote:Anyone used/using these ? I bought years ago and never installed. Is there a time limit, for the resin or duty cycles Thanks, flyingwedge.

Do not even try to use them.
They might be strong however, they will not survive the cycle and loads in the valve train.

Many years ago, a friend of mine purchased a set of the push rods after seeing an advertisement in National Dragster.
Installed them in his Comp Eliminator engine and after he warmed up the engine and rev it up, all the push rods frayed and turned into string cheese.

PackardV8 · Post by **PackardV8** » Tue Nov 13, 2012 4:40 pm

Yes, carbon fiber pushrods were the trick part of the week many years back. The manufacturer went broke very quickly, as they simply didn't live in a race engine environment. Seen anyone running them lately?

Whatever happened to ceramic-aluminum matrix pushrods?

jack vines

MadBill · Post by **MadBill** » Tue Nov 13, 2012 7:22 pm

I think 3M will still build them, for ~$2k per set.
http://solutions.3m.com/3MContentRetrie ... on=current

jsgarage · Post by **jsgarage** » Tue Nov 13, 2012 10:54 pm

Think I remember Smokey Yunick trying carbon-fiber pushrods on a SBC dyno run in the '80s. At some critical rpm, they went into resonance and converted back to individual strands. Carbon-fiber wrist pins? That's up there on the bad-idea list with cast-magnesium pistons.

Robert Kane · Post by **Robert Kane** » Tue Nov 13, 2012 11:00 pm

Carbon fiber wrist pins aren't what you think. They are basically a thin walled steel pin with an inner carbon fiber "liner" to bolster the strength. Never really worked link they thought either.

Robert.

flyingwedge · Post by **flyingwedge** » Wed Nov 14, 2012 12:32 pm

Yes, They are what you think, no steel but superlight, 17 grams ? I think for sh**ts and gigles, I'll use pins and pushrods in a WTF motor= learning/entertainment factor. Thanks, flyingwedge.

axegrinder · Post by **axegrinder** » Wed Nov 14, 2012 12:58 pm

flyingwedge wrote:Yes, They are what you think, no steel but superlight, 17 grams ? I think for sh**ts and gigles, I'll use pins and pushrods in a WTF motor= learning/entertainment factor. Thanks, flyingwedge.

The wrist pins are resin on the OD?

Any coating at all?

hondo · Post by **hondo** » Thu Nov 15, 2012 10:12 am

i installed carbon fiber pushrods back in the 80s, they broke just cranking over the engine, the steel end at the top where it broke, wedged open the rocker arm, keeping the valve open, driving a titanium valve thru the dome of a handmade piston,which is not a good thing,

flyingwedge · Post by **flyingwedge** » Thu Nov 15, 2012 11:43 am

axegrinder wrote:
flyingwedge wrote:Yes, They are what you think, no steel but superlight, 17 grams ? I think for sh**ts and gigles, I'll use pins and pushrods in a WTF motor= learning/entertainment factor. Thanks, flyingwedge.

The wrist pins are resin on the OD? Any coating at all?

>> No resin, just wishfull thinking/lol.

SilverXJ · Post by **SilverXJ** » Thu Nov 15, 2012 12:44 pm

Robert Kane wrote:Carbon fiber wrist pins aren't what you think. They are basically a thin walled steel pin with an inner carbon fiber "liner" to bolster the strength. Never really worked link they thought either.

I've seen some home made ones. Very thin outer steel shell (like .060') with a solid baked carbon fiber center. They were said to have worked.

vincenelson · Post by **vincenelson** » Thu Nov 15, 2012 4:09 pm

I bought a set of carbon fiber push rods for my BBC they weighted in ar 28 grams, they worded good until I wacked the throttle real hard which schreaded them....About three years ago I saw the ceramic aluminum matric ones at the SEMA show, I called to get a price they wanted around $150 each for them, I thought they must be gold plated or something. I guess you better have your lengths correct.

Post by **Dave Koehler** » Thu Nov 15, 2012 6:10 pm

flyingwedge wrote:Yes, They are what you think, no steel but superlight, 17 grams ? I think for sh**ts and gigles, I'll use pins and pushrods in a WTF motor= learning/entertainment factor. Thanks, flyingwedge.

Must Video or it never happened.

flyingwedge · Post by **flyingwedge** » Thu Nov 15, 2012 6:33 pm

Dave Koehler wrote:
flyingwedge wrote:Yes, They are what you think, no steel but superlight, 17 grams ? I think for sh**ts and gigles, I'll use pins and pushrods in a WTF motor= learning/entertainment factor. Thanks, flyingwedge.
Must Video or it never happened.

OK, pay per veiw-engine destruction derby ?

Don Terrill’s Speed-Talk

carbon fiber push rods and wrist pins

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