WizardBlack Posted April 19, 2009 Share Posted April 19, 2009 I'm a bit concerned about what I was told (or not) by the fellas at Isky. I sent my original (Jap manufacture) cam in to be reground to 490/480 specs; typical turbo regrind. They didn't say anything about machining the spring seats down in the head (like a thread I searched for mentioned), nor did they mention any special break-in (gonna be using Rotella-T oil for ZDDP content, but wasn't going to keep revs down or anything after the first 10 minutes running), nor did they say I needed to have my rockers resurfaced. I specifically asked them if I needed new rockers. What gives? Are they off? I know I need to talk to Ron for the best info, but he is evidently coming into work somewhere "around 2:30" on left coast time. I did measure installed height (1.700") and it came in dead on, so... Any ideas? Quote Link to comment Share on other sites More sharing options...
z-ya Posted April 19, 2009 Share Posted April 19, 2009 I would check the wipe pattern and adjust with different lash pads if required. And I would use new or reground rockers. Yea, Isky should have told you this, but maybe they ASSumed that you knew what to do. You know what happens when you AssUMe.... Really, they should just include a piece of paper with the cam with these instructions. It's amazing how many companies can't event do THIS for their customers. I think Isky does great work, but come on.... Pete Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted April 19, 2009 Author Share Posted April 19, 2009 And I would use new or reground rockers. Pete f@*! More money and delay. My poor VH's are crying out for the funding. Any place to get the rockers surfaced decent & cheap & quick? (Yeah, I know, the impossible trifecta) Quote Link to comment Share on other sites More sharing options...
Xnke Posted April 19, 2009 Share Posted April 19, 2009 Delta Cam, Tacoma Washington. I think it was 4$ a rocker last I checked, and it would have taken about a week to ship them in, a day to get them done, and a week back to me. Or if you own a surface plate, you can do them yourself, like i did. Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted April 19, 2009 Author Share Posted April 19, 2009 I am sure I don't have the tools or skills to do that. :-/ Should I somehow tag the rockers so they go back with the same lifters when I get them back? Also, what do you guys recommend for breakin. Let it idle high (2k rpm) for ten minutes, then don't go crazy for thirty minutes run time (<3500 rpm), then let it rip? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted April 19, 2009 Share Posted April 19, 2009 I've used the same set of rockers on three cams, never did anything to them. You don't need to break in the cam, at least I've never broken in any of mine. Just get the wipe pattern right and run it. That's my take, I'm sure you'll find lots who disagree. Quote Link to comment Share on other sites More sharing options...
z-ya Posted April 19, 2009 Share Posted April 19, 2009 I am sure I don't have the tools or skills to do that. :-/Should I somehow tag the rockers so they go back with the same lifters when I get them back? Also, what do you guys recommend for breakin. Let it idle high (2k rpm) for ten minutes, then don't go crazy for thirty minutes run time (<3500 rpm), then let it rip? If you get them reground, keeping specific rockers tied to particular valves is not important. If your rockers are smooth, and worn evenly, you can probably reuse them as is. If there are any grooves or uneven wear, get the resurfaced. It's cheap insurance given what you already have into the springs, cam, retainers, etc. Pete Quote Link to comment Share on other sites More sharing options...
theghosttanker Posted April 19, 2009 Share Posted April 19, 2009 You can easily resurface your rockers yourself. Run your fingernail around the rounded surface face and you can feel at the edges the little ridge that's formed by the wipe pattern of the cam lobes. Just lay wet-dry sandpaper on a smooth flat surface and sand the faces until you have a smooth contour all around the curve. Move the rocker straight back and forth (not side to side) and rock it from the front to back of the surface face on each stroke until you have an even new sheen and a smooth curve all the way around. I now use a diamond sharpening stone instead of the paper but I've used paper for decades, just got the stone a few years ago. Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted April 19, 2009 Author Share Posted April 19, 2009 Oh, I can do that. I have a tier 1 OEM auto company. Our specialty is paint, so I have tons of high quality sand paper. What grit? 1000? Mine seem pretty smooth, but yeah, cheap insurance. I'll give one a go and if it seems like there are grooves, I'll send them to Delta Cams. I'll be sure to use some permanent marker or somesuch and check all the wipe patterns. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.