Roller Lifter direction

auto10x · #1 (**permalink**) 11-19-2003, 05:54 AM

Has anyone heard about the requirement to reinstall roller lifters (if they have been removed) so the roller is rotating in the same direction as it originally was?
Thanks,
auto10x
Bill

wilf leek · #2 (**permalink**) 11-19-2003, 07:34 AM

Never heard of that one myself, would be interested to see what other more experienced engine-builders here say. (roundabout way of saying "don't rely on anything I say, I only really know how to rebuild BMC A series engines in Minis")

TCR_BRIAN · #3 (**permalink**) 11-19-2003, 03:19 PM

If you are speaking of roller lifter from a stock ford....there is a triangle cut into the lifter, this faces down...towards the piston....atleast any untouched ford motor I have taken apart was this way......Hope that helps....

Brian

www.teamcracing.com

cobra427mnsi · #4 (**permalink**) 11-19-2003, 03:36 PM

Why would anyone need a triangle pointing down to tell them in which direction a roller lifter is to be installed.

Do the Ford engineers think than most people can't figure out that the roller end goes on to the cam lobe!!! duuuuh !!

I think what autoX's question was about the direction of rotation of the actual roller on the lifter.

AutoX, sorry I don't know the answer to you question although I am installing a set of Crower rollers lifters as we speak. I will be interested in the correct answer to your question for some future build.

Paul

TCR_BRIAN · #5 (**permalink**) 11-19-2003, 03:55 PM

Thats not what I was implying....the triangle is where the lifter gets oil to push up the pushrod to get oil to the top of the engine, it just happens to be in the shape of a triangle....to even think of doing this or I was implying this, time to take up another hobby or proffession....better look at those crower lifters, they only go in one way too........make sure the slide a link is on the correct side..........

Brian

www.teamcracing.com

K.Wilson · #6 (**permalink**) 11-19-2003, 03:59 PM

I believe what Brian said refered to the C axis or the rotation of the lifter in the bore. not the X axis which would be the with the roller up or down in the bore. In this case Brian is correct the triangle or "V notch" is on the "Down" side (as he said toward the piston), or is "pointing toward the water jacket", not rotated 180 degrees in it's bore and pointing toward the intake manifold. If installed this way the lifter roller will always turn in the same direction.
Hope this helps. Keith

TCR_BRIAN · #7 (**permalink**) 11-19-2003, 04:04 PM

I hope I don't have to draw you a picture.....

Brian

www.teamcracing.com

DAVID GAGNARD · #8 (**permalink**) 11-19-2003, 04:45 PM

Bill;

I asked the same question at a local machine shop that does a ton of engine rebuilds along with a fair number of high performance motors..... He told me you do not have to keep them in order as you would regular hydraulic lifters....They can go in any way depending on the type....

I would check for the oiling hole as Brian has talked about and install them that way,but they do not neccesarily have to go back in the same hole as they came out of,at least that's what I'm told........

David

cobra427mnsi · #9 (**permalink**) 11-19-2003, 05:35 PM

TCR_Brian

I am sorry. I misread the meaning of your post. When you said "toward the cylinder", I understood in the up/down direction not side/side direction.

Paul

auto10x · #10 (**permalink**) 11-20-2003, 05:06 AM

Thanks for the information. It seems to be as I suspected, roller direction of rotation is less important compared to correct alignment of oil passeges, if needed.
Thanks again,
auto10x
Bill

TCR_BRIAN · #11 (**permalink**) 11-20-2003, 07:35 AM

Good, everything is all clear now....cobra427mnsi I said "toward the piston" not cylinder....but thats ok....
DAVID GAGNARD...you are right, you can use them anywhere, roller lifters do not create a break in pattern on the cam...means no break in time for the cam which is nice....Now go beat on it....

Brian

www.teamcracing.com

timk · #12 (**permalink**) 12-07-2003, 04:18 PM

hi, this thread is old, but i'm very interested. recently built a 302 that has given me nothing but fits with valvetrain noise. i have used 3 different pushrod lengths, shims galore, roller rockers, nothing....the only thing i could think of was having the lifters installed incorrectly.

now, i was thinking this would be pretty hard, since it's a roller block and they only go in one way, but....

the little oil hole....i didn't have it facing any particular way. some were out (toward intake), some were in (toward pistons).

is this the souce of my valvetrain noise?? i have great oil pressure, but if the lifters are still somewhat starved, it would explain a great deal.

thanks for any help you more experienced builders may give...i am not a mechanic, but i play one in my driveway!