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psychoRT
Dodge Dakota
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1/03/2003
12:22:38
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 Subject: Will these rods work? Needing help!
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I have a 98 R/T 5.9
Wondering if these rods will work in my truck. They are full floating as well.
Any help would be appreciated.
Eagle SIR Chrysler 273,31,340,360 Connecting Rods
$299.00
Eagle SIR Chrysler rods made from 5140 steel and having ARP rod bolts... The weight of the rods is over 140 grams lighter than stock and 25% stronger..Quality rods for a fraction of the price. BUSHED 6.123 Length, matched sets by weight..
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Tom Slick
GenII
1/03/2003
20:21:58
|  RE: Will these rods work? Needing help!
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Yep, they will work just fine...
Later!
Tom
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slopehead
Dodge Dakota
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1/03/2003
20:36:22
|  RE: Will these rods work? Needing help!
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only if you want your pistons to top out somewhere beyond the valveseats. those are designed for the LA engines, not magnums,due to redesign of the pistons, the top of the piston is futher away from the wrist pins in the mags then in the LA. KABOOM.
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1Flamed92Dak
GenII
1/03/2003
22:57:22
| RE: Will these rods work? Needing help!
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Those rods will work perfectly the rods didn't change. They changed the piston not the rod design SLOPEHEAD. The 6.123 rod is the same for 3.9 5.2 5.9 and the ole venerable 340.
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b1llyw
DakotaEnthusiast
1/04/2003
08:30:14
| RE: Will these rods work? Needing help!
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Hey Psycho, what happened to putting a big block in? You still going to use that carb?
Bill White
2002 QC 4x4, SLT , 4.7, 5 spd, 3.92 LSD
1995 CC 4x2, SLT, 318, 5 spd, 3.55 LSD
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slopehead
Dodge Dakota
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1/04/2003
09:45:45
| RE: Will these rods work? Needing help!
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1Flamed92Dak take the time to re-read what I said "the distance from the wristpin to the top of the piston is longer," causing it to contact the valves and the cylinder head. you go ahead and run them fool I won't as I want the pistons to last more then 1 crank rotation. now whom is the SLOPEHEAD? slopehead, yeah thats about what he is.
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POWER HUNGRY
Dodge Dakota
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1/04/2003
13:01:21
| RE: Will these rods work? Needing help!
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1Flamed92Dak,
Is right, There won't be any change at TDC because the rod psychoRT is talking about is the same size "6.123" as stock.
psychoRT,
Where did you see them?
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Carter
Dodge Dakota
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1/04/2003
19:47:16
| RE: Will these rods work? Needing help!
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when I put my 318 together for my dakota I used a set of 70 318 rods, they where a little heaver built that the magnums, plus the motor I had 4 rods where burnt in it. But the old style rods will work because i have it in my truck now.
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Tom Slick
GenII
1/04/2003
20:52:00
|  RE: Will these rods work? Needing help!
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slopehead - The rod dimensions for all years of the 318/360 engines is the same, it has never changed over the years... they will work just fine...
Later!
Tom Slick
turbokits@speedtweaks.net
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psychoRT
Dodge Dakota
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1/07/2003
00:22:01
| RE: Will these rods work? Needing help!
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They guy sold the 440 before i could get to it. I was telling his buddy for a wekk to let him know i have the money but the guy sold it. So no big block and everyone i found was already built or a block. So im back to square one. Im building my 360 up, i wasted a lot of time waiting for that 440. So im going to make me a rock solid 360 high compression with juice. Going a bit diff route though. Im not the get the bolt on everyone else has guy so im hoping it works out. The truck is leaning more for the less weight aspect and more traction. Juiceing out the hole. Dont know what im going to do with the carb yet, if some one offer me the right price its gone. And thanks everyone on the suggestions about the rods.
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afi360
*R/T*
1/07/2003
03:22:07
| RE: Will these rods work? Needing help!
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has anyone ever seen the movie deliverance??? that little banjo playin mongaloid was slopehead. i bet with all the money he has from that flick, hes got quite a lump o cash sitting around waiting to be poured into a 9 second dakota. get crackin thar, varmint!!
yea, those rods will work...where did you find those!?!? i am looking for alternative brands.
**in shadows growing wings**
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EyeTrip
R/T
1/07/2003
06:26:28
| RE: Will these rods work? Needing help!
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"squeeel"
Yes the rods will work.. and I would like to know where you found them too.
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psychoRT
Dodge Dakota
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1/07/2003
15:29:19
| RE: Will these rods work? Needing help!
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http://www.amsracing.net/rods.html
There is the link to were i found them. But i found them cheaper on ebay. Buynow $239 free shipping. Keep checking ebay they frequent there a lot. Do a search for mopar rods or dodge rods.
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MikeD
*R/T*
1/07/2003
15:36:54
| RE: Will these rods work? Needing help!
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PsychoR/T...I know I read somewhere that when building up your engine for nitrous its better to build at a lower compression like 8.5:1 for nitrous. I think its in this months Mopar Muscle Mag...might wanna check that out! Let me know if I read it wrong.
See ya
~Mike~
Get In...Sit Down...Shutup...& Hangon
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psychoRT
Dodge Dakota
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1/07/2003
16:00:11
| RE: Will these rods work? Needing help!
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I think you read it wrong. Nitrous has no bearing on compression nor does higher or lower affect it. High compression does raise cumbustion tempetures and with the nitrous introduced and not a cold enough plug or good octane rating fuel. It doe cause a threat, ive been messing with nitrous for a while now, hehe i also sell the stuff so it should be fine if you know how to build it. Im going up to 10.5:1 compression maybe a little more. So its not that drastic. I think the article you read was taling about Turbos or Superchargers, were you need lower compression because forced induction raises your compression ratio through the roof. :-)
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afi360
*R/T*
1/07/2003
17:02:12
| RE: Will these rods work? Needing help!
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im a total amateur at this, but nitrous DOES affect compression. if it doesnt, why must you retard the timing with nitrous? how come using nitrous will blow your pistons apart without retarding the timing? the way ive been told about this is that you must retard the timing so the ignition is not firing at t.d.c. it must fire BEFORE t.d.c. so there is more room in the combustion chamber, hence less compression. i dunno, im thinking maybe john lingenfelter knows what hes talking about..just a thought LOL
**in shadows growing wings**
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j
GenIII
1/07/2003
17:08:56
| RE: Will these rods work? Needing help!
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Neither supercharging or nitrous will affect your compression ratio. You haven't changed any physical dimensions. The ratio of the volume at bdc and tdc is the same. You are, however, raising the average pressure in the chamber during combustion by forcing in more of a charge. The increase in pressure raises temps and can lead to detonation.
2000 4.7 CC auto, clear corners, Magnaflow catback, Kenne Bell s/c.
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j
GenIII
1/07/2003
17:15:48
| RE: Will these rods work? Needing help!
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Peak pressure in the chamber is in part determined by when the spark occurs. You want to time the spark such that you get the highest pressure possible without detonation. If you get detonation, you can back off the timing which will eliminate the detonation but also lower peak pressures during combustion and hurt performance.
I could be wrong about this but I believe that advancing the timing sparks earlier and retarding it sparks later. You have to keep in mind that the combustion process takes some (small) time and the piston is moving fast.
2000 4.7 CC auto, clear corners, Magnaflow catback, Kenne Bell s/c.
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MikeD
*R/T*
1/07/2003
17:37:02
| RE: Will these rods work? Needing help!
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I know your probably know everything there is to know about nitrous but I found this site that has alot of useful info...
http://www.howstuffworks.com/framed.htm?parent=question259.htm&url=http://www.kb-silvolite.com/page14.htm
I skimmed through it and found this was pretty much the key phrase in the whole article...
"The strongest engines have less compression ratio, less spark advance, and more nitrous"
~Mike~
Get In...Sit Down...Shutup...& Hangon
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afi360
*R/T*
1/07/2003
17:42:26
| RE: Will these rods work? Needing help!
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LOL Mike D - I like it!
like i said, im an amateur...just tryin to help.
**in shadows growing wings**
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MikeD
*R/T*
1/07/2003
17:57:36
| RE: Will these rods work? Needing help!
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No I didn't mean you lol I meant Psycho
~Mike~
Get In...Sit Down...Shutup...& Hangon
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psychoRT
Dodge Dakota
JOIN HERE
1/07/2003
18:00:28
| RE: Will these rods work? Needing help!
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I dont know that much about supers and so forth so J might be right on that point.
But here is a qoute for you Mike "High compression ratios can be used with nitrous but shifting the maximum pressure after top dead center becomes more and more difficult. I prefer to use street compression ratios and then just work with adding more nitrous to get desired horsepower levels" that is out of that article.
Ok read that and tell me what you think. Would you rather have a slow motor with out nitrous or a fast motor and even faster with nitrous. Its really personal prefrence. He is talking about haveing a stock truck and adding a big shot with retard. Vs i want a decently fast truck without having to use nitrous to beat a mustang. Its all in the combo and how you set up the truck. And the article talks about what i said about combustion tempatures and so forth. If you dont want to hassle with the things to make a high copression motor run then stay stock and juice. But having high compression doesnt hinder nitrous if you use the precautions to make it work. Such as the ingition system i have chillin at the house and some good gas and cold plugs. But some people would rahter have a slow truck and fill the gap with juice. Which is fine if you really want to push that much juice through your motor to pop the head gaskets and maybe distroy your pistons.
Every thing is safer if your slower! remember that!
:-)
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afi360
*R/T*
1/07/2003
22:01:47
| RE: Will these rods work? Needing help!
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i agree with j, psychort, and mike d.
the last thing i have to say for right now is that i want a 13.5 second truck on motor, 12.5 on spray. im so jealous of you guys that can absolutely wail on $60,000 sports cars.
**in shadows growing wings**
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psychoRT
Dodge Dakota
JOIN HERE
1/08/2003
15:47:30
| RE: Will these rods work? Needing help!
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Dang were did everyone go that was the begining of a good debate :-(
But yea it is opinion based really. But that is a pretty good article.
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MikeD
*R/T*
1/08/2003
16:00:31
| RE: Will these rods work? Needing help!
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Hey Psycho...heard about that new deal their doin w/ the 04 Lightning? You get a 35-40sec 50 HP boost from the stock HP then it regenerates for 2-3 min then when the green light goes on it adds more boost.
Tom Slick described it as compressed C02 or a short shot of N02 cooling the intake air temp doin giving it more pep for that short amount of time cuz its making the air more dense.
Too bad we couldn't think of a setup on N/A engines to where we could do that.
~Mike~
Get In...Sit Down...Shutup...& Hangon
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psychoRT
Dodge Dakota
JOIN HERE
1/08/2003
16:32:34
| RE: Will these rods work? Needing help!
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They have been doing that for years with turbo cars. Spray the intercooler to cool the incoming air. Same theroy works with a super charger colder air equals more dense mixture. Hehe actually this has been going on for a while in N/A ever ice your intake manifold. Yup same theory, you cant spray with it nitrous though because it would crack and all sorts of stuff would pop. But running a small 25 shot while racing is acting in the same theory as that. Cooler charge, or put a intercooler on your N/A and spray the hell out of the cooler it will give you gains as well, if you got the air traveling fast enough.
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psychoRT
Dodge Dakota
JOIN HERE
1/08/2003
16:39:30
| RE: Will these rods work? Needing help!
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They have been doing that for years with turbo cars. Spray the intercooler to cool the incoming air. Same theroy works with a super charger colder air equals more dense mixture. Hehe actually this has been going on for a while in N/A motors, ever ice your intake manifold. Yup same theory, you can spray it with nitrous but it would crack and all sorts of stuff would pop. But running a small 25 shot while racing is acting in the same theory as spraying the intercooler. Cooler charge, or put a intercooler on your N/A and spray the hell out of the cooler it will give you gains as well, if you got the air traveling fast enough.
Forgot to proof read! Revised verison.
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Tom Slick
GenII
1/08/2003
17:28:32
| RE: Will these rods work? Needing help!
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PsychoRT - You can run tubing over the front of the intercooler(or through it) with compressed NO2 or CO2 or some kind of refrigerant, and it helps cool down the intercooler down even more(through thermal conduction)... The New Lightning Concept truck is equipped with such a system...
Yes, you can also just spray a small shot of nitrous to cool the charge also, but it has to be refilled...
Mike D - I didn't realize we have the same cam in our trucks until I looked at you profile...
Later!
Tom Slick
turbokits@speedtweaks.net
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psychoRT
Dodge Dakota
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1/08/2003
17:37:47
| RE: Will these rods work? Needing help!
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Yup, it basically freezes the tube then the air pass's over it, much like a Air conditioning unit for your house and so forth. My buddy has done the same thing with copper tubbing for fuel rails and intake tubes and so forth, but used cold ice water instead of a coolant gas.
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psychoRT
Dodge Dakota
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1/08/2003
17:49:06
| RE: Will these rods work? Needing help!
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From what i gather it is probally a design like Whipples Garret made intercoolers but instead of injecting water its a coolant gas. Sould be intresting to see how the new lightnings perform. Especially since those eaton chargers are one of the worst for heat and effecincy.
But ill just stick to juice, supers are fun and all but ehhh dont like the extra money to buy one when i can just buy a 6 dollar pill and give myself more hp.
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John RT/SE
Dodge Dakota
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1/08/2003
20:25:49
| RE: Will these rods work? Needing help!
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A couple of more things about the Eagle SIR rods:
The width of small end on the Eagles is the same as the pre-Magnum SB engines, which is approx 1/16" wider than Magnum engines. If you are using stock Magnum pistons you will have to narrow the small end of the Eagles (no big deal for a competent machine shop).
Also, Magnum engines don't use bushed rods (and hence full-floating piston pins). Non-bushed Eagle rods are available.
I found bushed Eagle SIRS for $220, shipped to my door off eBay! :D
FYI,
John
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