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storm Samba Member
Joined: April 28, 2008 Posts: 298 Location: Juneau, Wisconsin
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Posted: Tue Apr 23, 2019 3:21 pm Post subject: Trouble in pushrods city with photo |
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Recently built a 2027cc engine. Brake in predure went well. Nex day adjusted valves and repeat. Install into VW. Went on a trip in the country side driving at different speeds 40 to 55 mph. After about an hour heard a metallic sound coming from the rear. Number 3 cylinder was not working. Luckily I was not far from home. Took valve cover off and notice #3 exhaust pushrod disconnected from the rocker. Thease pushrods at heaven duty aluminum. Adjusted to .006. Have stock rockers. Wondering why this pushrod and the rest were not affected. Oil pressure at 55mph 48 lbs at 190 degrees. Like some info as what caused this. Thanks
_________________ always ready to learn and give advice |
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modok Samba Member
Joined: October 30, 2009 Posts: 26776 Location: Colorado Springs
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Posted: Tue Apr 23, 2019 5:15 pm Post subject: Re: Trouble in pushrods city with photo |
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pushrods are no good. Weaker than stock. You wasted your money buying those. Who was it? Empi? |
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storm Samba Member
Joined: April 28, 2008 Posts: 298 Location: Juneau, Wisconsin
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Posted: Tue Apr 23, 2019 6:09 pm Post subject: Re: Trouble in pushrods city with photo |
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Glad that you chime in I like your article s. Yes, EMPI push rods. _________________ always ready to learn and give advice |
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modok Samba Member
Joined: October 30, 2009 Posts: 26776 Location: Colorado Springs
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Posted: Tue Apr 23, 2019 6:19 pm Post subject: Re: Trouble in pushrods city with photo |
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AHA!
Begpack sold those darn pushrods for years, they just aren't made out of the right material.
Just the other day I thought..... since empi bought bugpack....I wonder what they are going to do with the remaining stock of those pushrods?
Hmmm yes I wonder
Nothing ever changes. Same shit different day. |
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[email protected] Samba Member
Joined: August 03, 2002 Posts: 12785 Location: Salt Lake City, Utah
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Posted: Tue Apr 23, 2019 6:21 pm Post subject: Re: Trouble in pushrods city with photo |
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Those are aluminum, but they are not HD. _________________ It's just advice, do whatever you want with it!
Please do NOT send me Private Messages through the Samba PM System (I will not see them). Send me an e-mail to john at aircooled dot net
"Like" our Facebook page at
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and get a 5% off code for use on one order for VW Parts ON OUR PARTS STORE WEBSITE, vwparts.aircooled.net |
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Dan Ruddock Samba Member
Joined: October 25, 2012 Posts: 3594 Location: Sarasota, in my adopted state of Florida
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Posted: Tue Apr 23, 2019 6:24 pm Post subject: Re: Trouble in pushrods city with photo |
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My pushrods won't do that along with others on the market. Looks like the steel end broke. Pushrods are parts that you CAN NOT getaway using cheap stuff regardless of what type of material they are. I have seen horribly soft steel pushrods.
Dan |
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modok Samba Member
Joined: October 30, 2009 Posts: 26776 Location: Colorado Springs
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Posted: Tue Apr 23, 2019 6:31 pm Post subject: Re: Trouble in pushrods city with photo |
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Yep. You can see from how it mushroomed so easily that it's not right.
Needs to be a high strength alloy of aluminum, and heat treated/aged.
A good hardened pushrod, if you break it, it nearly shatters.
True for steel OR aluminum. |
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storm Samba Member
Joined: April 28, 2008 Posts: 298 Location: Juneau, Wisconsin
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Posted: Tue Apr 23, 2019 8:02 pm Post subject: Re: Trouble in pushrods city with photo |
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I purchased them from Fomoco. They said they are ok to use on single heavy spring s. _________________ always ready to learn and give advice |
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modok Samba Member
Joined: October 30, 2009 Posts: 26776 Location: Colorado Springs
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Posted: Tue Apr 23, 2019 8:19 pm Post subject: Re: Trouble in pushrods city with photo |
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yep, just keep on shoveling, shovel it down the line.
It's a Dee/bugpack/empi/mofoco pushrod. And it's still weaker than stock no matter how far you shovel it. |
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FreeBug Samba Member
Joined: March 12, 2012 Posts: 4278 Location: deepest, darkest Switzerland
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Posted: Tue Apr 23, 2019 11:35 pm Post subject: Re: Trouble in pushrods city with photo |
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Mine were in a SCAT packaging, iirc, and yes, even polished, they were turds. Mine failed exactly like yours, on n°3. I, too, was running "HD" singles.
I'm thinking, now, with this identical failure, maybe it has something to do with how the n°3 exhaust heats up more, the head expands most there, and valve clearance grows, and the pounding is what sets it off. Not worth thinking about, though, as there are so many good ally push rods out there now.
Live and learn.. |
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Ebel Samba Member
Joined: June 07, 2015 Posts: 564 Location: New york
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Posted: Wed Apr 24, 2019 4:38 am Post subject: Re: Trouble in pushrods city with photo |
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I’d check the cup in the rocker arm for damage too. Looks like the steel end snapped and left a piece in the pushrod. It might have chewed up the cup in the rocker. |
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storm Samba Member
Joined: April 28, 2008 Posts: 298 Location: Juneau, Wisconsin
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Posted: Wed Apr 24, 2019 7:31 am Post subject: Re: Trouble in pushrods city with photo |
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Thanks all for your comments. What other brands out there either steel or aluminum for single and double spring applications. _________________ always ready to learn and give advice |
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[email protected] Samba Member
Joined: August 03, 2002 Posts: 12785 Location: Salt Lake City, Utah
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Posted: Wed Apr 24, 2019 7:46 am Post subject: Re: Trouble in pushrods city with photo |
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You have 2 choices first, chromoly or aluminum. We developed HD Aluminum almost 20 years ago, it took us a while to find out what worked after many material failures. The big box stores never learned and continue to sell the stuff which doesn't work.
Chromoly are strong, but have a much lower expansion characteristic than aluminum, so typically valve lash increases as the engine gets hotter.
Aluminum expands at a more consistent rate than steel, so they tend to be quieter at operating temperatures.
We recommend
http://vwparts.aircooled.net/Manton-3-8-Chromoly-P...h-rods.htm as a great all-around chromoly PR, good for everything short of Chevy springs (Stock, HD Single, Beehive, Dual VW)
Chevy springs require a .058" wall, http://vwparts.aircooled.net/Manton-3-8-Chromoly-P...h-rods.htm
http://vwparts.aircooled.net/ACN-Heavy-Duty-Aluminum-Pushrods-Set-of-8-p/acnhdalpr.htm
for everything up to dual springs and 1.1 rockers (stock, HD SIngle, HD Dual w1.1 rockers).
If you go dual springs and 1.25+ rockers get the dual tapered http://vwparts.aircooled.net/ACN-Heavy-Duty-Aluminum-Pushrods-Dual-Tapered-p/acndthdalpr.htm _________________ It's just advice, do whatever you want with it!
Please do NOT send me Private Messages through the Samba PM System (I will not see them). Send me an e-mail to john at aircooled dot net
"Like" our Facebook page at
http://www.facebook.com/vwpartsaircoolednet
and get a 5% off code for use on one order for VW Parts ON OUR PARTS STORE WEBSITE, vwparts.aircooled.net |
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Dan Ruddock Samba Member
Joined: October 25, 2012 Posts: 3594 Location: Sarasota, in my adopted state of Florida
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Posted: Wed Apr 24, 2019 8:05 am Post subject: Re: Trouble in pushrods city with photo |
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storm wrote: |
Thanks all for your comments. What other brands out there either steel or aluminum for single and double spring applications. |
Since you asked. The steel ends are monsters, the shanks are .267" O.D. and are made in USA. Just try to break them.
https://www.thesamba.com/vw/classifieds/detail.php?id=2159797 |
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nsracing Samba Member
Joined: November 16, 2003 Posts: 9459 Location: NOVA
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Posted: Wed Apr 24, 2019 8:09 am Post subject: Re: Trouble in pushrods city with photo |
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For critical parts, buy the proper materials. The HD Aluminums from John/ACN really hold up well. I have used them on the larger motors over the years -provided by people for their motors. I have not seen failures in street use to date.
If nothing else, single spring application - just use the stock VW pushrods. |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9145 Location: Canada
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Posted: Wed Apr 24, 2019 8:33 am Post subject: Re: Trouble in pushrods city with photo |
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I have a set of CBs HD aluminum pushrods coming out of my race engine. CB650 springs and no sign of wear. I cant use them any more so if you know your length shoot me a pm and I'll see if they are the same.
brad |
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[email protected] Samba Member
Joined: August 15, 2002 Posts: 4394 Location: Brew City
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Posted: Wed Apr 24, 2019 10:11 am Post subject: Re: Trouble in pushrods city with photo |
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modok wrote: |
yep, just keep on shoveling, shovel it down the line.
It's a Dee/bugpack/empi/mofoco pushrod. And it's still weaker than stock no matter how far you shovel it. |
PLEASE send them back to me. I will credit you and even before you send them back, I will send you a set of good Made in the USA steel push rods for no cost.
Send me your address to [email protected] and I will get them shipped today.
As for those push rods, I hadn't used them before but hoped that the Bugpack quality would still be there. I will be pulling them from my website. _________________ Please "LIKE" us on facebook to see what we are working on.
https://www.facebook.com/mofoco?ref=ts&fref=ts
www.mofoco.com
Cylinder Head Reference Sheet |
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maui Samba Member
Joined: May 16, 2004 Posts: 438
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Posted: Wed Apr 24, 2019 11:14 am Post subject: Re: Trouble in pushrods city with photo |
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I used cb ac.net and ruddeck and all super good but to me the ruddeck is the better ones but for you it’s overkill. Just get from John or cb perf. |
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mark tucker Samba Member
Joined: April 08, 2009 Posts: 23937 Location: SHALIMAR ,FLORIDA
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Posted: Wed Apr 24, 2019 12:20 pm Post subject: Re: Trouble in pushrods city with photo |
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do the mofoco roy deal. he has stepped up so do it. if you set the rocker end/side play @.002"-.004" they should be quiet at zero lash cold, thats zero, not loose |
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storm Samba Member
Joined: April 28, 2008 Posts: 298 Location: Juneau, Wisconsin
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Posted: Wed Apr 24, 2019 12:32 pm Post subject: Re: Trouble in pushrods city with photo |
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Roy, thanks for the offer it sounds good. Mofoco has proven that it cares for the VW enthusiast. Good job. _________________ always ready to learn and give advice |
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