Will Aspire HLA's work in Festy rockers?

[Larry Hampton]

I'm seafoaming it for a 3rd time. The bottom of the VC was pretty crusty.

[nitrofarm]

I'm seafoaming it for a 3rd time. The bottom of the VC was pretty crusty.

How is the compression....?

[neanderpaul]

Why bother, they are like 3 dollars a autozone. save yourself the headache buy new ones.

I know this is an old thread but Cestelle, I'm trying to send you a PM. You are full up.

[standard235]

Ahh the HLA issues...


One thing I've learned in my years of playing with the 4g63t's is how to clean HLA's. Sure, you could SeaFoam the car a few times buut.... AINT NOBODY GOT TIME FO DAT.


Seriously, go get some diesel fuel (enough to submerge your lifters in whatever container you use). I'm assuming these have a way to collapse them with a pin to drain oil and whatnot from them. So collapse them and pump them full of the diesel fuel. Obviously pump each one a few times when it's submerged to get air out and get the loose stuff out immediately. Let them soak for a day for so and keep repeating the pumping process until the diesel comes out squeaky clean. I have heard of Kerosene being used but I'd think that's too harsh but I guess diesel IS just dirty kerosene so it's up to you.

If you don't mind the $$, SeaFoam straight works just as well (probably better) so go find some on sale and do it up!



OR just spend the $8/lifter on Rock Auto and be happy, not to mention it's only 8 valves to deal with!

[zoom zoom]

Funny you should resurrect this thread.. I just had one start ticking on me badly after a 250 mile trip.

I've already kinda cleaned and taken the lifters out of this car twice for stuff, I think it's time for new ones.

[blkfordsedan]

I swear, if I ever run onto a carb'd B3 in the junkyard, I'm gonna rob the mechanical rockers off of it. Adjusting valves once a year is worth it. I know Matt says you can run either HLAs or Mechanical rockers on his reground cams. I wonder if I could do it on a FMS cam....
I bet could, since the HLA acts only as a lash adjuster and not also as a cam follower like in an OHV V8.

[zoom zoom]

Dude, I've seen two carb festy's with heads intact in the last 3 days. One is in Canton the other real close to Karl. If I had the cash to get the valve trains, you bet your bottom dollar I would. I would like to try those and get rid of all these HLA's that keep failing on me. I don't know what Matt is doing to his cams, but I have noticed that aspire Camshafts have skinny lobes, the festiva Cams have a wider lobe. Arty (I think) said Aspires have hardened lobes, festy's don't, which is why you don't use aspire hlas on festy heads...and vice versa.

[nitrofarm]

Funny you should resurrect this thread.. I just had one start ticking on me badly after a 250 mile trip.

I've already kinda cleaned and taken the lifters out of this car twice for stuff, I think it's time for new ones.

HALLELUJAH! :p

[blkfordsedan]

The Aspire cam has roller followers on the cam end of the rocker arm....as opposed to just a curved flat surface. It is a totally different cam design. The steel rollers require that the cam lobes be harder (possibly steel?). It's basically a completely seperate issue from the HLA's. You can't run a roller follower rocker arm on a cam designed for a slider or pad style follower. Not only due to wear, but the ramp proflies are more agressive on the roller cam lobes and are not geometrically compatible. The same goes for typical OHV V8 engines. on an OHV design with lifters, the lobe design is different for mechanical snd hydraulic lifters as well as roller lifters. Aspires use the same HLA in the valve end of the rocker that the Festy does. Obviously, the roller lobe is different, but I'm not sure if there is a geometric lobe design difference between a mechanical and a hydraulic (HLA) cam on our OHC engines....since the HLA is on the valve end and has no contact or direct effect with the cam. Maybe Matt specifically designed his lobe profiles so he could accomodate both styles with this in mind.....maybe it just doesnt matter with the OHC design. I would have to ask him if it was an issue he had to address or not. Does that make more sense?