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SCAT versus Molnar versus Oliver Rods #3085805
10/13/22 06:12 PM
10/13/22 06:12 PM
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California
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GTXMEX Offline OP
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Which would you go with?

Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3085809
10/13/22 06:45 PM
10/13/22 06:45 PM
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PA.
pittsburghracer Offline
"Little"John
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Oliver are the best of the group you listed and Molnar are the best budget rod. I ordered mine (Molnar) last November and I’m still waiting.


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




Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3085813
10/13/22 06:54 PM
10/13/22 06:54 PM
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Oregon
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AndyF Offline
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Originally Posted by GTXMEX
Which would you go with?


If you want to build the engine in the near future then buy what is available. I had a customer who just put Oliver rods in a street engine since they were the only rods he could find. He didn't need anything close to Oliver quality for a pump gas street engine but he needed rods and they were in stock. Everything else was on universal back order with no due date in sight.

Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3085827
10/13/22 07:49 PM
10/13/22 07:49 PM
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Milford, OH
markz528 Offline
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Originally Posted by GTXMEX
Which would you go with?


Actually all of the above! Scat for my 500 hp motor, Molnar for the 713 hp motor and Oliver for the 1050 hp motor.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 13.300 @ 101.75 mph
69 GTX (clone) - build in progress......
Re: SCAT versus Molnar versus Oliver Rods [Re: markz528] #3085832
10/13/22 08:13 PM
10/13/22 08:13 PM
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MI, usa
dvw Offline
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I've been very happy with Molnar's quality. The machining and weights were spot on. My 580" with 4.5 stroke motor sees 7200 rpm every pass. I did spin a bearing last year. But it had nothing to do with the rod or crank. I went right back to the same parts. For info read here; http://www.cpbulletpistons.com/tom-molnar-rods-review.php
Doug

Last edited by dvw; 10/13/22 08:14 PM.
Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3085834
10/13/22 08:17 PM
10/13/22 08:17 PM
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New York
polyspheric Offline
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Rod quality and price are sold by horsepower levels, but it's not really relevant.
The factors (NA only) are 1:1 with reciprocating weight (piston etc. + upper rod 1/2) and inverse to the square of peak RPM.
What breaks the rod (assuming the bolts hold up) is closing the throttle as the piston passes over TDC even with the spark off.


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Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3085836
10/13/22 08:20 PM
10/13/22 08:20 PM
Joined: Dec 2006
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Pa
Hot 340 Online content
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Maybe give Ohio Crankshaft a call. Looks like they have nice rod options in stock. I've been impressed with their stuff in the past.

Re: SCAT versus Molnar versus Oliver Rods [Re: polyspheric] #3085961
10/14/22 11:56 AM
10/14/22 11:56 AM
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north of coder
moparx Offline
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"What breaks the rod (assuming the bolts hold up) is closing the throttle as the piston passes over TDC even with the spark off."



is this an inference to snapping the throttle shut at the end of the run, instead of easing off, then slowing with the engine running and in gear ?
beer

Re: SCAT versus Molnar versus Oliver Rods [Re: moparx] #3085966
10/14/22 12:03 PM
10/14/22 12:03 PM
Joined: Jan 2012
Posts: 2,285
Stuttgart, Arkansas
rickseeman Offline
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Oliver rods are made in America, I assume are much better and I assume are 3 times the price. So I don't think this is a fair comparison.


2011 Drag Pak Challenger
Re: SCAT versus Molnar versus Oliver Rods [Re: rickseeman] #3085976
10/14/22 12:27 PM
10/14/22 12:27 PM
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Tulsa OK
Bad340fish Offline
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Originally Posted by rickseeman
Oliver rods are made in America, I assume are much better and I assume are 3 times the price. So I don't think this is a fair comparison.


I have heard they are some of the best. However the 501" Small Block Mopar build that Ron Silva did(the thread is on here somewhere) made me think otherwise. He had all kinds of problems with crooked bores and maybe more on his oliver rods.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: SCAT versus Molnar versus Oliver Rods [Re: rickseeman] #3085977
10/14/22 12:27 PM
10/14/22 12:27 PM
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Posts: 18,792
Las Vegas
Al_Alguire Offline
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I am not so sure I would endorse the use what is available mantra. We did and it bit us in the [censored] in the Vette. We needed to freshen up th engine in it and had been waiting on Cariilo Aluminum rods for the engine and they were not going to make it in the timeframe we needed to make the race in Norwalk. So the decision was made to go back to what we had always used before, a big name brand aluminum rod company that had been in this engine for YEARS. The hesitation was they had been purchsed by an equity company not so long ago, one hat has been buying up aftermarket parts manufacturers for awhile. Well after a few pulls on the dyno and two passes later here is the result of using what was available in a time frame VS waiting.

FWIW the rings are still loose on the piston, the pin if still free on the small end, other than the hearing being folded up it the surface of it looks new, as it always has. Also two others were found with cracks. Again these were brand new rods with a few pulls on the dyno and 2 passes on them.

[Linked Image]


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: SCAT versus Molnar versus Oliver Rods [Re: Al_Alguire] #3086006
10/14/22 01:24 PM
10/14/22 01:24 PM
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W. Pa
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usp4u Offline
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I was waiting on Molnars for my w9 build, but found Callies Compstars to actually be available.

Re: SCAT versus Molnar versus Oliver Rods [Re: usp4u] #3086119
10/14/22 09:17 PM
10/14/22 09:17 PM
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Bend,OR USA
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Cab_Burge Offline
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I've used CAT, Scat, Olivers, a bunch of Molnars and several sets of Ohio Crankshaft H beam rods, some with the standard 8740 ARP bolts and some of them with the better ARP 2000 bolts and several sets of Hi Po rods on motors that were going to make north of 750 HP with the L19 and one set of the Olivers with their SPS bolts, 7/16 bolt size on all of them with no real part complaints on any of them motors, not so on the owners of several of those motors, some people can screw up a 50 ton wrecking ball in a sand box with a feather whistling shruggy whiney


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: SCAT versus Molnar versus Oliver Rods [Re: GTXMEX] #3086122
10/14/22 09:51 PM
10/14/22 09:51 PM
Joined: Oct 2007
Posts: 4,070
New York
polyspheric Offline
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IIRC a while back China supplied the raw forging and the final machining was done here, so fit & finish may be excellent.
So...?
China is not as thorough about inclusions (slag, other material not intended to be included, in fairly large particles) if these occur at a highly stressed point...BOOM.


Boffin Emeritus
Re: SCAT versus Molnar versus Oliver Rods [Re: polyspheric] #3086149
10/15/22 06:31 AM
10/15/22 06:31 AM
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Wind Gap,Pa.
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Sammy Offline
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I spin my little smallblock and make over 1000 hp so I'm not taking any chances on any Chinese part. Oliver rods are tge only way to go but damn, they are very costly.

Re: SCAT versus Molnar versus Oliver Rods [Re: Al_Alguire] #3086229
10/15/22 11:06 AM
10/15/22 11:06 AM
Joined: Oct 2006
Posts: 1,192
New York, USA
Chargerfan68 Offline
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Originally Posted by Al_Alguire
I am not so sure I would endorse the use what is available mantra. We did and it bit us in the [censored] in the Vette. We needed to freshen up th engine in it and had been waiting on Cariilo Aluminum rods for the engine and they were not going to make it in the timeframe we needed to make the race in Norwalk. So the decision was made to go back to what we had always used before, a big name brand aluminum rod company that had been in this engine for YEARS. The hesitation was they had been purchsed by an equity company not so long ago, one hat has been buying up aftermarket parts manufacturers for awhile. Well after a few pulls on the dyno and two passes later here is the result of using what was available in a time frame VS waiting.

FWIW the rings are still loose on the piston, the pin if still free on the small end, other than the hearing being folded up it the surface of it looks new, as it always has. Also two others were found with cracks. Again these were brand new rods with a few pulls on the dyno and 2 passes on them.

[Linked Image]


Now this looks similar to the destruction in Steve Morris’ 4000+ HP engin in his wagon. I’m sure you’ve seen that on his channel…..more severe with much smaller shrapnel. But his small rod end still attached to piston and freely moving just like yours. Interesting. Wonder if they are the same manufacturer.

Sorry for your carnage.


1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
Re: SCAT versus Molnar versus Oliver Rods [Re: Sammy] #3086253
10/15/22 12:28 PM
10/15/22 12:28 PM
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Stuttgart, Arkansas
rickseeman Offline
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Originally Posted by Sammy
I spin my little smallblock and make over 1000 hp so I'm not taking any chances on any Chinese part. Oliver rods are tge only way to go but damn, they are very costly.

When building a 1000 hp small block I can't believe you're worried about the cost of rods.


2011 Drag Pak Challenger
Re: SCAT versus Molnar versus Oliver Rods [Re: Sammy] #3086404
10/15/22 10:05 PM
10/15/22 10:05 PM
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Posts: 9,681
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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Originally Posted by Sammy
I spin my little smallblock and make over 1000 hp so I'm not taking any chances on any Chinese part. Oliver rods are tge only way to go but damn, they are very costly.

But not as costly as part of a rod sticking out of a block.
I could only get Molnar's 3000 hp rated H beams in 7.00 length. Cost me a few hundred extra, but considering I will be spinning a 2400 bob weight 4.560 stroke to 7400, probably my best bet? They are heavy, about 900 grams, so maybe it worked out like it should.

Last edited by gregsdart; 10/15/22 10:09 PM.

8.77 153 mph best, 3055 lbs 528 indy 440-1 alky






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