Rockentech not so rocking?

[dragrdan]

Just received my 4mm camplate from Rockentech, and I have an interference issue. There is a ridge or ledge where the OD of the ears were machined, and it is hitting on the roller support ring ID. It does not let the camplate ride on the rollers at the lowest point of the lobe. Anybody else have this issue?

Called them and explained the problem. They asked to see pictures. I emailed them pictures of the problem. They called me back, and in the best english they could muster told me to GRIND THE LEDGE BY HAND?!?
ON A $400 PART?!?

Here are some pictures so that anyone else ordering from them may know what to expect.

First off a Bosch camplate:

Notice the OD of the ears is smooth all the way down

Next the Rockentech 4mm:

You can see the ledge at the bottom of the "ears" that runs all the way around.

And a couple of pictures of how it fits:



Well after their response, I took the parts to my favorite machine shop(not cheap, but VERY good), and am waiting to see what it will cost me to fix.

[cummins king]

if it dosent work or cost to much PM me, i have some pull with rockentech.

[PToombs]

$400 and they told you to grind it off? I think my response would be to send it back and say FO, I want my money back!

[Richie O]

$400 and they told you to grind it off? I think my response would be to send it back and say FO, I want my money back!

EXACTLY! Reminds me of the HTT upgrade I got a couple years ago. I got them on the phone and they are like " Your not putting it together right ". Like its real hard putting a compressor housing on. I got my money back and did buisness elsewhere.

[ford69557ci]

I didnt have that prob with my 4mm plate. You are wasting time with the big plate unless you figure out the spill port issue

[dragrdan]

Also noticing the Bosch camplate seems to be a forging, cant tell with the other one.
If I hadn't made other irreversable adjustments in the pump specifically for the 4mm camplate, or knew where to source another, I would have sent it back.
The machine shop will fix it, they will just pickup the OD of the "ears" and cut that ledge farther in for clearance.

[PToombs]

Then send a copy of the bill to Rockentech, they probably won't pay it, but you'll feel better.

[1STGENFARMBOY]

I would be carful it looks like on your original plate those little ridges on the inside that devide the holes looke like they are pretty tall, if you pick up the OD and turn it to deep you might screw thing up, i would only go as deep as i hade to plus maybe .010 for insurance.

[dragrdan]

The machine shop that is handling it is used to dealing in tighter tolerances than needed for this, so I trust their judgement(prolly why they cost what they do ). They have the whole assembly as pictured and will do what is needed to get it working.

[1STGENFARMBOY]

Are they a diesel machine shop or just a general machine shop, you mite want to take your old camplate and kinda explain how it works, just cause they know how to run a lathe and read mikrometers dont meen they know what to do to your piece, do you know what i'm tryin to say ? where i work we have a big shop with guys that have 30 yrs experance, just because they know how to do it don't mean thy know what to do

[dragrdan]

They are a general machine shop(not even automotive). They have the camplate rollers, and the roller support ring(so they can make sure), and we talked about several different ways to gain the needed clearance. Cutting the ledge deeper seemed to be the quickest and easiest adjustment to make without affecting anything else. I do know what you mean tho.

[dragrdan]

Well the machine shop just got in touch with me, they ended up chamfering the ID of the roller support ring for clearance, and found that the area in between the ears is too high and giving the same problem.
As pictured(roller support, rollers and camplate) it sits together fine now, but introduce the input shaft, and the "cross" and it doesn't.
So they are gonna fix that problem.

[ford69557ci]

Wow thats crappy. The one I bought a few years ago fit just fine and was a nice lookin piece. Maybe thier quality has gone down some

[dragrdan]

It IS crappy. I am hoping for Rockentech's sake that I just got a bad one, that didn't get caught by QC. Otherwise, their quality sure has dropped. Even a blind man could have seen that there was a problem from those pictures.

Either way, their customer service dropped the ball on this one. I will NOT buy another Rockentech item. Proper business etiquette would have been to offer an exchange(if for nothing else but to compare this one to the blueprints and be sure). When they told me you bought it its your problem, GRIND IT, that closed the book.

[ford69557ci]

Thats a crap deal. If any place pulls that on me I bother them so bad they finally give in lol