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Old 05-21-2005, 05:54 PM
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Nifty new Scat rods.

Really beefy looking. Nice price too.

http://cgi.ebay.com/ebaymotors/ws/eB...975153140&rd=1

Flatlanderracing.com sells 'em for $269 a set if you're skeered of e-bay vendors. My next engine will have a set of those.

Larry

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Old 05-21-2005, 09:11 PM
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Dang you, Larry!!!!! Just when I finally decided to go ahead and use the P.M. rods (w/ARP bolts and polished beams) You throw a monkey wrench in my plans!!! Don't worry about the Ebay sealer, Midwest Motorsports are great guys to deal with!! Anybody interested in a nice set of P.M. rods cheap????
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Old 05-21-2005, 09:14 PM
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why not CNC'd Hbeam rods for $295 instead?
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Old 05-23-2005, 09:37 AM
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Because I prefer lightweight stuff for street engines. These aren't exactly flyweights but I'd rather have the extra weight on the big end rather than in the beams.

Larry
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Old 05-23-2005, 09:43 AM
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rods

I just put a set of them in the last 406 i built....

Keith
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Old 05-23-2005, 03:00 PM
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Did you have any clearance issues with the big rod bolts?

Larry
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Old 05-24-2005, 05:51 AM
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rods

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Originally Posted by coldknock
Did you have any clearance issues with the big rod bolts?

Larry
They missed the pan rails, but the area around the bolts on the side of the rod hit the cylinder on the oppisite bank....I actually missed that on my mock up but caught it on the second check of everything. ( a good lesson why you always double check) I used a .900 base circle roller in it so i am not sure how good the profile is around the top, but i had tons of room there.......

The only other issue i found was...... I also used a scat 9000 series crank and with the sizes i got .001 more rod clearance then i run. So i used .001 under bearings......

I had to touch 2 rods on the big end to get the balance perfect, but it was only like 1 or 2 grams. Nothing to really worry about.

This engine will be a good test for them. The customer i built it for could break a bowling ball!!!!!! So if they make it through his thrashing i guess they are good pieces??????

Keith
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Old 05-24-2005, 10:30 AM
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Not really new. They have been out for a few years now. I have a set of the PMI Pro Mod I beam with the same large rod bolt design in my turbo engine. I called about the Scats, and the guy at dirt track thunder sold me on the PMI. They are rated to 850HP/8500RPM and are only $469. I had a little bit of trouble with cam clearance, but not too much. I had to take about .04 or so for clearance. The Scats are certainly cheaper, but there is some other chinese stuff(I include Scat and Eagle in this category) that is a little nicer for a few more bones. Just something to think about.

Chris
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Old 05-24-2005, 02:52 PM
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Another Option

And, what about the Lunati StreetRace Rods? Very light at about 600 grams and only about $350/set, I think. Does anyone have any experience with these? I think they are even USA made.

PatM
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Old 05-24-2005, 05:33 PM
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Thanks for the info. As usual I'm on a really tight budget for this engine and my only other option is a set of very skinny 4130 rods from Wheeler. 513 grams each. I don;t care to use them in this one because the heavy dose of nitrous it'll get.

Larry
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Old 05-25-2005, 08:21 AM
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Larry, do your self a big favor and stay away from the wheeler parts....

Keith
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Old 05-25-2005, 10:59 AM
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I know, I've heard a few horror stories. Even if these were from a reputable company I wouldn't use them in this engine. There's just not enough steel there to make me comfortable.

They've been used already and show no signs of giving up yet. Center to center length is correct, both ends are still round and in spec and no stress cracks. I'll probably stick them in a mild 350 if I ever get around to doing another one.

Larry
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