BoostedDSM

iTrader: (6)

So my build came to a grinding halt just now, just take a look at these rockers. I'm not sure what they are, got them on the engine when I bought it, and they have some little tips sticking down under the roller not letting it touch the top of the lash caps?

Not sure if they are just the wrong rockers, or what the hell is up. Needed to have this done today, and finding this screws me... damn cars!


So if they are not the right ones, I spent money having the top end setup wrong... and now question the cam or anything else being done right too.

transbird95

iTrader: (4)

They look like comp cams self alining rockers to me. Are there guide plates?i couldnt see.

guppymech

iTrader: (7)

The casting finish is too rough for Comps, I bet some chinese knock off...PRW?

BOLO

iTrader: (40)

Yes, they look to be self aligning roller rockers. These rockers will not require you to run guide plates. It will also require retainers made for these rockers as well.

BoostedDSM

iTrader: (6)

^ I figured as much with retainers, I have lash caps on my setup now and clearly these won't work.

I'll be ordering new ones from summit in the morning, sticking with the SA for now. With the 503 I don't think I need NSA yet. My 355 will have them for sure!

lt1-xjs

Why are you running lash caps? I don't know of any S/A rocker that will work with lash caps.

Vicious95Z28

iTrader: (1)

+1, you need to ditch the lash caps or get guideplates and get Custom with those rockers.

BoostedDSM

iTrader: (6)

I was told I needed lash caps because of my rockers making the valve stem to short or something of the sort.

hrcslam

Considering those rockers are not a good name brand, I'd replace the rockers. Yes, they are more expensive than the retainers, but you don't want to cheap out on the valve train. SA rockers are fine if the valve train is set up correctly. I take my Harland Sharp SA1002 to 6800 without issues.

BoostedDSM

iTrader: (6)

http://www.summitracing.com/parts/cca-1418-16 picked these up to replace the shot rockers. The needle bearings were gone, and frankly they are just junk. oh well, no big deal.

Catmaigne

iTrader: (6)

Those aren't full rollers, only roller tip. A roller trunnion is more important than a roller tip for making power. They're not really worth it IMO considering full roller Scorpions are ~$65 more.

BoostedDSM

iTrader: (6)

Considering i have to use lash caps right now as the valves are a bit short, I've not seen any other RR's on summit that would work for me. I say summit, as i always get parts next day, and need them asap.

lt1-xjs

I have a set of Promags for less than that. Like I said though, a S/A rocker isn't going to work with those lash caps. You'll need NSA rockers, guide plates and chromoly pushrods.

96capricemgr

iTrader: (1)

and since you want to use all the wrong parts anyway I will tell you right now the Comp guideplates are the wrong spacing for an LT1, Isky adjustable are the best bet but some guys like the Trickflow, cheaper, easier, less than perfect but a whole lot closer than Comp. This isn't to say the Comp are badly made, they are just meant for a different valve spacing.

BoostedDSM

iTrader: (6)

My entire upper half is now all comp parts, being I don't have the tools or experience yet. So the fact that I got screwed a bit by an engine shop is a bit shitty, but sure keep making shitty assumptions like you ALWAYS have on here. I took it to have it inspected and setup, expecting to be told if something was bad. instead the guy setup my motor all F....'d up.

So since I forgot in the OP, I'm using COMP 918's, with 795 retainers, new 10 degree locks, locators, valve seals, and obviously the cam and lash caps. I'm only using the lash caps since i was told my valves were to short and i had no choice.

I wanted to run a NSA setup from the start, but in a pinch thought maybe i could get away with SA for a few weeks as I'm just starting a new job blah blah blah.


So IF the roller tip comps work that i linked at least for now, i'll be happy... i can always swap rockers out easy enough.

Catmaigne

iTrader: (6)

You shouldn't need lash caps, especially with beehives. The retainers are small and rockers should clear. I had to run caps with wide Crane duals and Harland Sharps so the thick steel retainer would clear.

BoostedDSM

iTrader: (6)

I'm going to have someone else check it over, make sure the springs are installed properly etc. Not taking chances, I canceled my order from summit and am going with trick flow guide plates, comp 7.205 high energy pushrods and scorpion nsa rockers.

Just pissed you pay someone to do something and they do it wrong. Needless to say I'll be paying the guy a visit soon! Take my $360 back....

BALLSS

OP

are you saying your valve stem is to short with the 795 retainers & 10 degree locks to use SA RR which is why you are using lash caps??

use ISKY adjustable guide plates and NSA RR like Comp ultra pro mags and NO lash caps

and confirm PR length...7.200 should be fine but we don't know wtf your heads are, valves, was motor & head decked, etc

it is all about valve train "geometry", get it wrong and......boom

BoostedDSM

iTrader: (6)

I was told the valves were to short to work with those rockers and I needed the caps. I'm no expert on valvetrain, but I did a lot of homework on good parts/proven combos.

I'm going to either take it somewhere else, or get a mic and check install height as is.

Catmaigne

iTrader: (6)

Yeah, too short for those crappy SA rockers. People don't seem to have that problem with real ones but I would honestly go NSA with guideplates depending on cam.