some input please

HiFlow5 0 · #1 05-18-2004, 01:58 AM

Currently I have FMS 1.6 pedestal rollers rockers. I just recently went in and tried to adjust my rockers because I was starting to develop a slight ticking, thought maybe one of the rockers came out of spec. I noticed that some of the rockers were getting grooved where the roller tip was rubbing on the inside of the rocker. Kinda looks like the rockers were shifting from side to side for some reason. I heard somewhere that roller rockers only have about a 40k miles life span, anyone else heard this?

Anyway, so now I'm looking into different rockers, and was considering Crane 1.7's. Would this be an OK decision, with my E-cam and other such mods in my sig? You guys think I notice any difference at all, or be just wasting my money?

Thanks, Craig

GTStang · #2 05-20-2004, 01:30 AM

If it is was i think you are describing.... Sounds like semi-normal wear from some valve float. Maybe some time for Rocker girdles or shaft mounted rockers...

HiFlow5 0 · #3 05-20-2004, 09:56 AM

Valve float huh? Before I had the Edelbrock heads, my E7's were floating valves. I had reused the rockers on the new heads, but didn't pay much attention to how they looked.

351wStang · #4 05-20-2004, 10:08 AM

Could have gotta the wear pattern started on those rockers with the old heads and since you reused them it just carried over. I would try rocker girdles before I spent tons of money on shafts. 1.7's will take you to .529 lift if your cam is .498 with 1.6's. I would suggest Comp pro magnum roller rockers. They are the best I've found.

HiFlow5 0 · #5 05-20-2004, 10:17 AM

With 1.7's and the e-cam will be .529" lift. I'm just worried that would be too much and cause piston to valve clearance problems. I am thinking with my 1.90/1.60 valves it should be ok, but if there were 2.02's then I would run into problems. I really don't want to pull my motor all apart to clay the pistons either, I was just hoping someone would know fo sure.

351wStang · #6 05-20-2004, 10:32 AM

You could run 2.02/1.60's and not have any problems with that cam. Unless you are running insane compression. What piston are you running? What cc are your heads? Are your pistons flycut or do they have valve releifs? Let me know and I'll see what I can figure out, but I personally think you will be just fine. You really dont have to worry too much about piston-valve clearances in the extremes until you are building an interferance motor. Which I dont think you are. 13:1 59cc .721 ect, thats when you should start to wonder about punching holes in your pistons.

HiFlow5 0 · #7 05-20-2004, 11:38 AM

Stock pistons with valve releifs.
Heads are 60cc
And I think my compression is 9.2:1

66_Mustang · #8 05-20-2004, 01:50 PM

Hey GTStang nice car do you really own it?

351wStang · #9 05-20-2004, 02:11 PM

No worries HiFlow you can run a huge cam. Just make sure your valve springs can handle the extra .030 lift or so and you will be fine. You wont have any clearance issues.

eillob · #10 05-20-2004, 08:57 PM

I met a guy at the All Ford Swap Meet and drag competition at Gateway last week. He is running an E cam w 1.7 rollers w 1.90/1.60 valves. He said he has no clearence problems. Stock block and pistons on a 88 GT.

HiFlow5 0 · #11 05-20-2004, 09:13 PM

Oh yeah, the Edel's are good to .575
Thanks guys!

HiFlow5 0 · #12 05-20-2004, 09:16 PM

Quote:

Originally Posted by 66_Mustang

Hey GTStang nice car do you really own it?

Nope, this would be his car.

Sorry, bobby

91_4ourbanger · #13 05-20-2004, 10:37 PM

are those bullits i see on a fox? niiiiiice.

GTStang · #14 05-21-2004, 03:43 PM

LoL yes they are... I have always been a huge fan of the Cragar SS rims. So when Ford did thier version of them with a Mustang Cap I just had to have them though I wasn't sure how they'd look on a Fox. I'm pleased with the look of em. Silver polished Bullits rock on the Fox!

Craig the car doesn't look like that any more.... Right now the whole rear of the car is down to bare metal and rubber. You should come join the sanding fun!!!! LoL

Mercracer · #15 05-21-2004, 04:06 PM

Quote:

Originally Posted by 351wStang

You could run 2.02/1.60's and not have any problems with that cam. Unless you are running insane compression. What piston are you running? What cc are your heads? Are your pistons flycut or do they have valve releifs? Let me know and I'll see what I can figure out, but I personally think you will be just fine. You really dont have to worry too much about piston-valve clearances in the extremes until you are building an interferance motor. Which I dont think you are. 13:1 59cc .721 ect, thats when you should start to wonder about punching holes in your pistons.

Dude.....there is not as much room as you think. Stock 5.0 Pistons with 2.02 valves and any kind of lift plus added duration do not work.

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