| From | Message |
lobby
Dodge Dakota
JOIN HERE
11/06/2002
11:14:53
|
 Subject: roller rockers
IP: Logged
Message:
will these fit on a 97 3.9??
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1872061834
|
DakotaDan
*GenIII*
 
11/06/2002
12:06:39
|  RE: roller rockers
IP: Logged
Message:
Not much advantage to 1.6 RR's other than better MPG unless you are going with a custom cam grind
The 1.7's are the ones that give the extra power
http://www.crower.com/cat/domestic/chrysler/truck_valvetrain.shtml
Dan
"Can You Hear Me Now"........................................GOOD !!!!!!!!!!!!!!!!!!!!!!!!!
|
justa4x2
Dodge Dakota
JOIN HERE
11/06/2002
13:01:26
|  RE: roller rockers
IP: Logged
Message:
if the v8s hp increases 20-25 and the v10 increases 30-35 what does the v6 get and at what rpms do you feel it? if i have 100,000 miles on the engine, is it really worth the $350?
|
power hungry
Dodge Dakota
JOIN HERE
11/06/2002
13:47:41
|  RE: roller rockers
IP: Logged
Message:
justa4x2,
Since the 3.9 is a 5.2 minus 2 cylinders the power gain should be 3/4 of the v8's or 15 hp(1.7RR). Power is gained through out the rpm range with the quoted increase happening a little past peak hp. It helps put less wear no the motor so it is always a good idea. Other than a nos kit it is the best overall power increase per dollar.
|
Dale
Dodge Dakota
JOIN HERE
11/06/2002
13:58:54
| RE: roller rockers
IP: Logged
Message:
Thanks for the site dan.
Now I have a question, what kind of MPG change did you get, better? worse? And how much??
|
DakotaDan
*GenIII*
11/06/2002
15:07:14
|  RE: roller rockers
IP: Logged
Message:
Dale:
I really have not seen any change in my MPG good or bad, I get 17-18 most of the time in town & mixed and 22-23 all Highway.
justa4x2:
If you have a 100k miles you may want to do new valve springs and/or rebuild the heads just to be safe with the 1.7's
power hungry :
I agree with you, that was my thinking about 15-20 HP out of the 1.7's for the V6
Dan
"Can You Hear Me Now"........................................GOOD !!!!!!!!!!!!!!!!!!!!!!!!!
|
Dale
Dodge Dakota
JOIN HERE
11/06/2002
16:04:01
| RE: roller rockers
IP: Logged
Message:
Cool, now time to win the lotto or something to get the cash for them. OO, and get my other truck running so this one can be down for a few days to do it. :(
|
Drew
Dodge Dakota
JOIN HERE
11/06/2002
16:55:23
| RE: roller rockers
IP: Logged
Message:
Exactly what is a roller rocker and where does it go??? Sorry for my stupidness...also, i have a 3.9L V6...
|
DakotaDan
*GenIII*
11/06/2002
17:06:20
| RE: roller rockers
IP: Logged
Message:
How a Engine works
Dan
"Can You Hear Me Now"........................................GOOD !!!!!!!!!!!!!!!!!!!!!!!!!
|
Dale
Dodge Dakota
JOIN HERE
11/06/2002
22:29:59
| RE: roller rockers
IP: Logged
Message:
Ok, I played around with a camaro on why home. To say the least. I'm in the mod for some more power. how much do these little babys cost??
|
Pistolero
Dodge Dakota
JOIN HERE
11/06/2002
23:31:47
| RE: roller rockers
IP: Logged
Message:
Dan, if I may steal a little of your thunder here ;-), Sam at Socaldakotas.com sells the Crower stainless steel roller rockers for $350, which includes shipping. I bought a set of 1.7's from him about a month ago, but haven't installed them yet. I'm waiting to get a few more miles on my truck before I tear the valvetrain apart.
If you're going to go to the trouble and expense of installing rockers, you should also do an intake, throttle body, and exhaust at the least. I'm doing an Intense Performance intake (Dan has the K&N), and an F&B throttle body. I've installed headers, but I'm not looking for anything out of them until all that other stuff goes on. I've got a Magnaflow also, but it sounds like *%$^ on a V6, and will soon be replaced by a Super Turbo or something else. Since I had the money at the time, I'm also trying a set of MSD wires, plus the obligatory distributor cap, rotor, and a set of NGK plugs. After that, I lust after a set of 4.10 gears. After that, I lust after a new truck with a V8.
|
Drew
Dodge Dakota
JOIN HERE
11/06/2002
23:45:46
| RE: roller rockers
IP: Logged
Message:
Ok...i spent 30 mins reading everything about cars...lol...and i didn't find roller rockers, mind explaining to me??? I saw pics of them!
|
Pistolero
Dodge Dakota
JOIN HERE
11/07/2002
00:31:43
| RE: roller rockers
IP: Logged
Message:
Drew, the gizmos that move the valves up and down are the rocker arms. They're installed on top of the cylinder heads, which are the big iron things under the valve covers. The rocker arms are moved back and forth...like a seesaw...by the pushrods, which are pushed up and down by the lobes on the camshaft as the engine crankshaft rotates. Each valve...exhaust and intake...has its own rocker arm. The rocker arm pushes the valve open, then lets it close. The stock rocker arms are stamped steel and work by rubbing on top of the valve stem. Roller rockers use a needle bearing fulcrum rather than a friction pivot...the part in the center that the rocker arm moves up and down on...less heat and resistance...and they also have a needle bearing tip that rolls across the surface of the valve stem...again, less friction, less heat, less wear. The 1.7 ratio roller rockers have a little different geometry than the stockers...which give a little extra lift and duration to the valve opening/closing, without requiring a new cam. That's about it...
|
Drew
Dodge Dakota
JOIN HERE
11/07/2002
08:05:50
| RE: roller rockers
IP: Logged
Message:
Oohhh, cool man, thanks for the info
|
Dale
Dodge Dakota
JOIN HERE
11/07/2002
08:16:20
| RE: roller rockers
IP: Logged
Message:
Pistolero
I have already done everything you suggested. I belive I have done everything to this but, BOOST, e-fan, Headers, and the rockers.
http://downndirty10.tripod.com/downndirtywithjay/id13.html
I think I gonna have to wait tell after x-mas for this. Man this blows, I need a better job.
|
stealwings582
GenIII
11/07/2002
17:49:58
| RE: roller rockers
IP: Logged
Message:
I'd like to know if this mod, with 1.7 rockers, will improve anything? I've heard a lot about this where it will give an extra 25 hp, but I dont think it's that drastic. Anyone out there see any imporvements with the 1.7's? Greg
98 SLT Dak. 3 inch Fab tech suspension lift, 3 inch body, 4.10 Limited slip posi rear end, 33x12.5 BFG A/T KO tires, Eagle 589 wheels, 48 mm throttle body, ram air, JBA Headers, Flowmaster 3 inch exhaust, Ford/Bosch 19# fuel injectors, Jet Stage II chip, MSD coil, Bosch 4 prong plugs, Underdrive pulley
|
Drew
Dodge Dakota
JOIN HERE
11/08/2002
00:14:09
| RE: roller rockers
IP: Logged
Message:
Hey steelwings, nice truck, especially when it just looks like mine, even the SS speed grille and all, except that it's lifted and bigger tires...i still like your truck.
|
dogliftsleg
Dodge Dakota
JOIN HERE
11/09/2002
06:35:01
| RE: roller rockers
IP: Logged
Message:
why all the comments on the 1.6 roller rockers, All the magnums already have them factory installed.
|
Pistolero
Dodge Dakota
JOIN HERE
11/09/2002
12:56:49
| RE: roller rockers
IP: Logged
Message:
No, the magnum motors don't have roller rockers, they have roller lifters. The rockers are plain old, stamped steel...
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
