Vipergtrs

Just fitted hydraulic roller lifters and rockers to my 66 427 and they are very noisy until warm.

Not tapping just mechanical noise in general

Should I use a different oil now and if so will it make a difference? Currently using a break in oil

Many Thanks

sstonebreaker

What weight is the break in oil?

Westlotorn

Did you install a new roller camshaft also or just the roller lifters?

Vipergtrs

Will check but it's the oil recommended by Comp Cams

Yes cam too etc

Factoid

Factoid

Vipergtrs

Yes, see above.

Vipergtrs

Yes, cam too, see above. Reading the instructions from Comp Cams it does say to but agree I thought break in oil was only for flat tappet

Yes, this does quieten a bit at that point but still noisy till completely warm

Zero preload plus 1/2 a turn

Nowhere Man

did you add the the correct groove to the rear of the cam shaft? did you add the holes needed in the front of the block for oil?

Vipergtrs

Yes cam has the grove and holes in the grub screws

jaguardriver

When I rebuilt my 66 427 - 390 horse, I used Comp cams roller cam and lifters. They were so noisy, I ended up exchanging the set. I went through 3 oil changes with conventional 10W-30 oil. Still some noise. I switched to synthetic same weight and the noise went away. Could be from break in but it happened right after the oil change. There is no break in with roller cams but I wanted the engine to break in properly before switching to synthetic. All good now, no smoke, oil burning and great oil pressure.

Vipergtrs

That's very interesting, thanks for sharing

I figured we needed the Zinc contend in our oil but I guess with roller lifters maybe it's no longer required

What grade and make of synthetic oil do you use?

BTW as "Jaguar Driver" what do you have?

jaguardriver

Zinc content not really an issue with roller lifters. BTW: the zinc levels were lowered, not eliminated in modern oils for the catalitic converter lifespan. I use the Mobil 1, Castrol Syntec or Valvoline Synthetic. 10W-30 Usually get whatever is on sale. In my opinion, most any major brand full synthetic is far and above the best conventional oil. As far as Jaguars, I have been working on them since the 70's and have owned a lot. I was even President of the JCNA (Jaguar Clubs of North America) for 5 terms. At this time, we have a late model XF. I had a couple of XKE's until recently. One sold at Pebble Beach and the other was a race car that I ended up selling to a guy in Florida. Currently also have a Ferrari and an Aston Martin besides the Corvette.

Vipergtrs

Great stuff, thanks again...I'll give that a go.

I'm an etype fan, had many over the years and currently have a S1 Roadster

My biggest passion is for Astons, I have a few but my favourite is my 88 V8 Vantage X pack, childhood poster car.

By Brother emigrated to CA a few years back and specialises in upgrading classic Jaguars but mainly E's, XJ Coupes and XJS

Thanks again
Lee

cardo0

What part number are your CC lifters? Comp sells some Reduced Travel hydraulic roller lifters. And how/what method did you use to adjust them?

AZDoug

My hyd rollers are not noisy.
I adjusted them while running, one at a time, on a warm, but not hot, motor: back off one at a time until clatter, then tighten to clatter just stops then another 1/4 turn. That a bit more than zero lashed, and will not make noise hot or cold. You are going to need either a valve cover with eight holes cut out, (do one side at a time) or some other oil dam at the bottom of the head to keep the oil from getting all over the place. Heavy alum foil wrapped over the psuhrod end of the rocker will oil spray down. They make clips that do the same thing for stamped steel rockers but that isn't what you have, maybe they will fit or maybe they won't.

Doug

Vipergtrs

I'm not sure, left it to my vette shop

Zero plus half a turn

cardo0

How did you verify zero lash?

AZDoug

Zero is "just" not clattering.
Doug

ajrothm

If they are Morel hyd rollers, they will be noisy when cold. There is nothing you can do about it. The oil, preload, mileage etc, nothing will improve the cold clatter. Its all in how they are machined and the internal tolerances. You just have to live with it. I had 25k miles on my Morels before one finally ate a roller bearing. I have solid roller lifters going in it now to get away from the clatter.