Trend pushrod failure
#765634
08/04/10 11:13 PM
08/04/10 11:13 PM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
master
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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these are new! ....... .135 wall $270 pushrods. im calling best machine in the morning. luckily this only happened when I was cranking the engine over and didt fall down into the engine... I dont trust any of them in my engine now!!! I want a whole new lot!
Mopar Performance
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Re: Trend pushrod failure
[Re: moparniac]
#765635
08/04/10 11:15 PM
08/04/10 11:15 PM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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WOW my new Mantons should be here tomorrow would hate to see something like that happen
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: Trend pushrod failure
[Re: dusturbd340W5]
#765636
08/04/10 11:25 PM
08/04/10 11:25 PM
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Joined: Feb 2005
Posts: 20,197 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,197
PA.
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Before you try another take a good flashlight and have someone turn the engine over to make sure the pushrods are not rubbing on the block or heads. I had some major grinding to do on both my Keith Black block and the 440-1 heads but I am using 1.6 rockers.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Trend pushrod failure
[Re: pittsburghracer]
#765637
08/04/10 11:35 PM
08/04/10 11:35 PM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
master
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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1.65 TDs here... block was clearanced and I had the heads pushrod clearanced also... heads/pushrods came from same place! I am gonna look things over more closely tomorrow! I have everything apart right now! Just seems to clean of a break for me!
Mopar Performance
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Re: Trend pushrod failure
[Re: bigtimeauto]
#765640
08/05/10 05:41 AM
08/05/10 05:41 AM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
master
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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It was an exhaust on #8 . this pushrod has no marks on it!
Mopar Performance
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Re: Trend pushrod failure
[Re: moparniac]
#765641
08/05/10 08:13 AM
08/05/10 08:13 AM
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Joined: Jan 2003
Posts: 13,385 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,385
Marion, South Carolina [><]
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I'd call up Manton and order a good set.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Trend pushrod failure
[Re: HardcoreB]
#765645
08/05/10 12:05 PM
08/05/10 12:05 PM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
master
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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Well the heads/ pushrods / rockers and spring package all came from the same place all new !!! PtoV was .110 intake and .140 exhaust ... I'm not blaming Best Machine here one bit so no one twist that! They have contacted Trend and I am sending the whole lot to trend to be analyzed ... I have about 180 miles on my engine I believe it will be on my new odometer I installed. Once and if the pushrod was to blame we will go from there !!! Best Machine has been top notch to me from day one when I first bought all if this...
Mopar Performance
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Re: Trend pushrod failure
[Re: DoubleD]
#765648
08/05/10 01:36 PM
08/05/10 01:36 PM
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Joined: Nov 2004
Posts: 3,544 Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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I would tend to think its a break based o9n some some of meterial issue or during the heat treating process. I believe Trend buys there moly tubing in 21' lengths. ( maybe rolls but I dont think so) Once they determine what lengths they need. the tubing will go thru an annealing process. Thats usually about 1-2" from the finished end of the required tube length. I'd have to guess, they may find a problem in that arena. john is a good guy at Trend, and he will get you an answer for sure. It will be interesting to see what they find.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Trend pushrod failure
[Re: moparniac]
#765649
08/05/10 03:14 PM
08/05/10 03:14 PM
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Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,292
Bend,OR USA
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I have seen Smith Bros. do the same thing, I had one break during a pull on the dyno, it broke the top off of a Crwoer roller lifter and ended up guaging the cam lobe On eof my freinds had the same thing happen on another set of Smith Bros but it broke at the very top under the ball cup end, mine had a defect in the material where it broke I now have Mantons in all of my motors, PM if you want a set. I'm a dealer for all three companys
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Trend pushrod failure
[Re: moparniac]
#765652
08/06/10 04:17 PM
08/06/10 04:17 PM
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Joined: Jan 2007
Posts: 3,695 nc
emarine01
master
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master
Joined: Jan 2007
Posts: 3,695
nc
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See if you can look thru the spark plug hole with a good bore scope , check the exhaust relief in the piston for a contact mark, You wont always bend a valve with piston to valve contact, We broke a push rod in the middle like that pic of yours, turned out to be a guide that was too tight, I ran this engine for 2 weeks on and off at the shop and it was fine, broke the push rod on the return road after the first pass, I ended up pullin the heads cause I couldn't find the problem, I bought a good bore scope the next day
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Re: Trend pushrod failure
[Re: emarine01]
#765653
08/06/10 05:00 PM
08/06/10 05:00 PM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
master
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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no bore scope here .... Im just gonna have to wait and see what trend says as they are gonna inspect them over! Its hard to believe a ptov contact (if the valve hung open like you said) wouldnt bend a valve but snap a thick "Trend" .135 wall HD pushrod so clean like that... youd think the valve would bend and pushrod bend before that happened to a "Trend" pushrod... should know something from Trend next week!
Mopar Performance
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