1998 JEEP GRAND CHEROKEE 5.9L ROLLER ROCKERS 1.72
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- Опубликовано: 13 июн 2012
- Scorpion 1.72 RR for a ford 302 ho pedestal mount/installed on 1998 jeep grand cherokee,and they work great!!!!!!!!. Mods are 4 inch custom intake,magnaflow glass pack,1.72 scorpion rr for a ford 302 ho pedestal mount,custom trans mount,ported throttle body,spal radiator fan,new lifter's,pushrods,1 inch drop and soon swapping my 125 shot nx nitrous kit from the wife's jeep
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by the way. I forgot say its nice jeep and I love what ya did under the hood. it looks really good. sounds good to. enjoy it, I would.
i love your truck man at first i thought it was a joke until you poped the hood and i was like niceeeeee...heres what i have my magnaflow glasspack on
what a day i helped install them on the jeep it was like they were made for the magnum motor
It's working fine and has alot more power!!!!!!!!!!!!
I put a set of these on my '96 Ram /w/ the 5.9 360 & I'm well satisfied. I have a few additional tips for anymore followers. #1 Lube the head of the pedestal bolt to help prevent the rocker from trying to twist while tightening the bolt. Even still make sure the tip roller ends up centered over the valve stem & each rocker perfectly in-line to prevent bad geometry & wear. #2 If you have a 5.2 liter engine, they have a different cam which has .020 more lift so pay closer attention to coil-bind.
awesome! I'm completely buying these next pay check :)
I drive it like i stole it every day works perfect i love it leave the baffles under the pcv and breather(cut around them).
Get your Intakes belly pan gasket changed and don't be fooled by the aluminum plate fix for it either, just use copper permatex with the felpro gasket, should fix your ping and bring back lost power. Do that along with a full tune up.
You need to leave the baffle underneath the pcv valve and the freash air vent just hammer it down some and use the stock pushrods
I highly recommend you toss that plastic intake hat and replace with a 4" aluminum Spectre 98499. I posted an Amazon review comparing the two. Made a yuge difference in my ZJ.
Yes,stock guides and stock push rods.just make sure you have 0.060 before coil bind.
I did up a 360 magnum about 5 years ago. it was running about 300 + hp. not bad for a motor with 350000 hard k on it. but enough about the 360. not that I don't like it. im just workin on somethin different. I gotta 318 magnum that im changing heads and doin roller rockers and a bit of a port. am also changin intake plenum and bigger throttle body, msd ignition, e3 plugs. e3 plugs do work good. under hood cold air ram air intake ( built that myself ) accept filter. its k&n. MBRP exhaust and AMSOIL EVERYTHING! not that I can take anything away from the 360. mine took a lot of shit from me. so the 360 is a great motor. its just that I have always favored the 318.
They're practically identical....who wouldn't love more cubes?
Omg Greg! It's the same motor that in a ram. Just in a jeep w/e works in a jeeps motor will Wrk in a dodge motor 3.9-5.2-5.9
how are these rocker working a year later? have you looked to see if the there is wear? the head on the 5.9 is identical to the 5.2 and the springs can handle .500 lift so these would work great in theory
Rockers... but rockets.
I know this is an old video but did you just buy the 1.72 kit. And it all bolted up perfect using stock springs pushrods and guide plates with no issues? I’m trying to find a cheaper source then Harland Sharp. I didn’t want to use the 3/8 conversion for Chevy rockers.
did you see performance improvements after those rockers?
Do you have the part number for those rockers? Also, you may have mentioned it, but assuming direct drop in? Same push rod length?
My 5.9 is has similar rockets. The baffles have also been removed.
Do you have a breather cap on any of the oil filler holes?
Mine has one, with an extension tube, but it still gets oil coming out of it after a while.
I of course have one of the four oil filler holes going to the PCV.
Thanks.
Have a 5.9 transplanted in my TJ, had a stroker mustang that I never used comp cams 1.7 roller rockers, wonder if they’d work on my 5.9 Mopar? Harlan wants $430 for theirs.
Did the mounting bolts come with?
Thats awesome, many of the companies for the 5.9 Magnum are like twice the price for the rockers!. Did they come with the push rod guides?
I've finally got some spare cash to blow, so I'm gonna pull the trigger on a set. Do I have to get studs or can I use the stock Dodge Rocker arm bolts? and also, do I mount the rockers on the stock dodge push rod guides? thanks much!.
Now is this on a stock cam. Im doing 450 from Marty at Utah performance. What stems did you use for the roller rockers
fuck yeah!!
Have you had any issues? I'm putting a 5.9 in my truck and would like to know if it's something that is durable.
wonder if these rockers will fit the 242 I6
I think I got it off the box in the video but I like to just make sure. It's fuzzy on my phone.
Nice jeep. It's been a while how they holding up?
Did you have to use push rod guides? or are they not needed with roller rockers?
any symptoms on overheating the motor? any ecm tunning? Mine heats like shit.
Also zero mods to the engine other than taking the valve cover baffle out correct? How much power would you say you gained?
Wow, you have lots of miles on that, do you know how much lift you added and do you have headers?? Do you notice any improvement??
In addition, the computer will have to re-learn the new air-flow & idle parameters. My diagnostic computer shows the CPU increased the idle by 104 RPM to compensate for the manifold vacuum change. My truck has a very noticeable power gain during normal driving and loves Interstates, 2000 RPM & up. I really haven't matted it yet. As far as I've seen on mine, it hasn't hurt my mileage & not so sure it hasn't improved (with normal driving that is). Keep in mind my engine only has 10,000 miles on it
jeepmanmudding Since you posted this video, have you had any complaints or issues? I'm about to press the buy button on a set,..hoping you will answer before I do.
Just use all the stock stuff and you'll be good to go
Thanks, I found a deal on a set also, and bought them. However, I will be removing a set of Harland Sharp 1.6 rollers if you know anyone interested.
How much
I take it this was just on a stock cam?
what do those rockers do for improving performance? do they push the valves down farther?
yes
That's the part number
That moment when your rockers are changed before your intake 😂😂😂😂
How were you able to mount it? I know you used stock guide plate and pushrods and leave 60 thousands of inch gap but how was this roller rocker mounted by any chance thanks
They are pedestal mount just like the stocks. Looks like supplied guide plates from scorpion. All small block rocker arms are virtually identical however the difference is geometry, aka rocker arm angle.
You are going all wrong here Bailey Ferg. Do NOT do .60 lash or "gap", and the kit comes with GP's. The distance left before valve spring/coil bind or the spring is smashed Max is what he is referring to. Dummy terms.
I thought I was watching forest gump
Do you still have this Jeep? Looking to put these same rockers in my 5.9 Magnum. I am also in Florida, just outside Jax. Thanks for the upload.
I sold the truck to a buddy of mine but yes they have been working perfect!!!
@@jeepmanmudding Thats great to hear. Was wanting to go with a .480/.480 lift cam but I think this will be far easier and quicker for me. Didn't have to change pushrods or shim under the rockers? I have an email to Scorpion seeing if I can mock a few up because they have a few 5/16 pedestal 1.7, 1.72 and 1.73 rockers.
I had to modify the pushrod guide plates ever so slightly...no cutting just a light bend on them So the pushrod would not Rub hard against the push rod guide plate
You will have to modify the valve cover baffles and you need to leave a little bit of material Under the PCV valve that way it does not constantly throw oil at it and suck it into the engine but for the most part they need to be removed easy job
What's the part number?
Was this a direct bolt up?
Yes bolt in
WILL THESE WORK ON A 5.2 MAGNUM 318?! PLEASE REPLY!
Yes they will. 5.9 and 5.2 heads nearly identical and valve springs snd rockers are the same.
I noticed you have a electric fan, I bought a 98 5.9 that has fan off serpentine belt, any idea if they came this way ???
They usually do that when the electric fan goes bad....
they put a clutch fan on it
Stock GCs had belt driven with fan clutch and all. Electric fans are aftermarket.
Jax DeBusk 98 5.9s have an electric fan stock
you sure
Jax DeBusk 100% sure was the only jeep of the ZJ's to come with an electric fan stock
SCP1022BL
did you say .060 play??? Thats huge... it shouldnt have any valve lash at all, its hyd roller...
He's referring to valve spring bind/or bottoming out not valve lash/clearance
Don't put ford parts on a Mopar.
Its a good thing the roller rockers are made by Scorpion then.