Hey all
well i finally have my long rod 198/2.2 motor almost complete, i'm really wondering about roller rockers though, are there anymore advantages to them?? where can i get them and are they really worth the trouble and extra cost?? gimmy some opinions on what you all think! thanks

Justin

Roller rockers do have some specific advantages: lower friction, reduced oil temps, better and more stable geometry. Whether it's worth it depends on your application. A higher revving engine, with a higher lift cam that sees more extreme use will probably benefit more than a stock motor.

As far as the poll goes, I don't understand. Are you going to go with whatever the majority suggest to you? You probably already have an intended purpose and look in mind. Mud bogging, autocrossing, or daily driving all have different requirements for ride height.

There are 12 sec. cars with stock rockers. Cox bros have 'em for about $400 a set if you have the extra cash. Less friction and 1.6 ratio are advantages.

Lou

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Home of Slant6-powered fun machines since 1988

I Put on a set of Rocker Arm Speclists that you can get from the Cox Brothers and it took 2/10 off in the 1/8 . Mine work fine 1.6 don't have to adjust them but about 2 times a year. Thanks Ron

hey all,
well i'm not sure what to do about the rollers, my truck sees extreem abuse as a daily driver and i'm livin with a 88 Excort LX at the moment and i need the truck back, i'm lookin to have my truck as an autocross type setup and strip. my truck is going through extensive body customization after about 6months of drawing and planning, i'll have pictures of before and after its finished. as for the poll, yeah i'm lookin on opinions about lowering my short box truck its an 87 and i love the stance (rear higher than the front) what size rims should i through on it?? i dont want a real low rider only about 2-4" knocked off its height to help handling abit...so what do you all think?

Justin

I've been considering them, too. But I haven't even seen a picture of what they look like, and/or how they are constructed. Also, I haven't seen what, if any, mods are needed to install.

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'66 Cuda 225/4spd
'66 Dart GT convertible 225/auto
'64 Dart GT 340/4spd

hey bud L.
heres some pics i found while the old board was up still and i saved them, enjoy (they are actually quite interesting)





now what do you all think??

P.S. Hey Doc, i'm sorry for using your images and hope you dont mind but there the only ones i can find, could you through your .02 in here??

Justin

What's that modification to the valve cover used with the roller rockers in the pictures below?

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'68 Dodge Dart 4dr Sedan

I know they say 'a picture is worth a thousand words', but I have more questions. The hose clamp around the rocker shaft pedestal, is that for holding the rocker shaft shims in? Are the rockers bushed, or are there needle roller bearings for the shaft. Is there a seal on each side of each rocker to hold/ or restrict the oil so that it is pressurized, or is it just a 'controlled leak'? Do they take a special shaft or is the stock OEM shaft OK? I see you have a drip oiler manifold rigged to oil the roller tips, is there any other way to get oil to the tips? Why are the shims needed?

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'66 Cuda 225/4spd
'66 Dart GT convertible 225/auto
'64 Dart GT 340/4spd

hey all,
well first of all i'd like to clear some things up, i don't have rollers yet although i have made the valve cover for them i need to set up the rollers that i plan to buy...you need a drip type oiler for the tips b/c there is no other way that i know of to get oil to the tips adequately enough to do anything, i think when you buy the roller rockers it comes with shaft and all b/c from what i see you cannot use the OEM shaft, the shims are needed to hold the 1.6 rocker ratio i think, i don't really know much about them again this is all from my speculation....

HEY DOC HELP ME OUT HERE

Justin

Roller rockers arms for the SL6 are a good improvement for a high reving performance build-up, I feel the stock rockers do a pretty good job right up to 6000 RPM.

The Rocker Arm Specialist roller tip rockers have a bronze bushing that rides on the stock size shaft, the ones I got look like the shaft has been hard chromed and reground. The close fit between the rocker arm and shaft is tight enough to prevent excess oil bleed-off out the sides. Overall, these rocker arms are well made.

I use a special oil rail installed in the valve cover just because I want lots of oil right on the roller tip and valve. I find that this helps cool the exhaust valves as well as prevents valve gear wear. The Alm. Roller Tip Rocker Arms do have oil feed holes running up to the roller tip but it has to stop just before the roller. With the roller tip being the high point on a Slant Six, I am unsure how much oil will "splash" up to the tip, I don't want to be "unsure" so in goes the direct oiler, the rocker arm and valve now gets lots of oil.

As for the shaft shims and the hose clamp in this photo:
http://www.dutra.org/pictures/engine/pa ... easure.jpg

The shims are needed to get the valve tip contact geometry correct. (roller contact centered on the valve tip) I could have shortened the valve stem to achieve the same result but the shims are easier to adjust.

The down side of thick shims is they act as a wedge in the head's rocker shaft saddle and can crack / split the cast iron head's rocker tower. The tower in the photo is cracked and the hose clamp is there to prevent it from spreading open and loosing grip on the bolt.
DD

So would you recommend machining the pedestals, making shaft blocks ala W-2 shafts & rockers. Then you can fine tune the geometry with shims beneath the blocks and it wouldn't split the rocker pedestals and/or adversely affect the oil delivery to the shaft and rockers.
What about the shaft? Does it have the banana grooves like the T/A shafts?

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'70 Cuda AAR
'74 Duster 360
'79 MagnumGT
'79 Chrysler 300