!.7 rockers

skiwesser · 11-15-2002, 12:12 AM

Are these rockers hard to install? Are there any diffrence in

the crane "cobras" and the ones from ford? Are they both

pedastal mount, are shims needed? Can I use my old pushrods?

Do they add much power (noticable)?I'm changing my intake

gaskets and thought I might add these and fresh valvesprings

while the intake is off. Thanks Guys

SKI

Bad89stang · 11-15-2002, 02:57 AM

They are fairly easy to install and you can get instructions from Crane's website.
The Crane RR are the ones that Ford used on the 93 Cobras.
You will not notice any major power improvements. It will reduce wear and friction. We did not need any shims when doing the install on a 92 coupe. Depends on the condition of your valvetrain. They will come with the shims anyway.

skiwesser · 11-15-2002, 03:09 AM

Can you reuse the stock pushrods? What valve spring will I need? Thanks!!

Bad89stang · 11-15-2002, 03:11 AM

Stock everything. You can use your springs too unless they are worn out. How many miles are on the car?

Bad89stang · 11-15-2002, 03:25 AM

skiwesser · 11-15-2002, 03:27 AM

She's pushing 150,000, I figure they need it! Especially if I get the 1.7 RR's

Bad89stang · 11-15-2002, 03:28 AM

If it were my car, (I have more miles than you) I would put new springs on.

skiwesser · 11-15-2002, 03:34 AM

Thanks for your help!
I don't know much about valvetrain, when you say stock everything I guess retainers or locks or whatever they're called can be reused also or do I need them with new springs?
I'm guessing you used compressed air through spark plug hole to keep valves from falling in? I'm told this is how to do it.

Bad89stang · 11-15-2002, 03:40 AM

yes, yes, and yes

jim_howard_pdx · 11-15-2002, 02:12 PM

If you have a lot of miles on your engine, I expect your blow by has increased, you may have poor cylinder sealing at the rings, or worn cylinder walls. Many engines will have some pitting on the valve faces, and poor sealing on the valves to boot.

So I would pull each plug, fill the cylinder with a bunch of thick but flexible string, and then compress the cylinder until the string or rope compresses against the combustion chamber. Now you can pull off the locks and retainers, and change out the springs.

This is an "ol guy" trick we used, before compressed air was discovered.......he he he......

But again, I would do this anyway because I have had new fresh engines that still dropped the valve with high air pressure in the cylinder.

The rope might end up saving you time and distress.

Coupe50h · 11-16-2002, 01:27 AM

Read my post on these, the cranes are pretty good, i gained some good power, far as i know, my car is around 180k, and i didnt change springs, i left everything as it was, just bolted in the pedestal 1.7's, if you need more directions let me know, i didnt use shims, and i have no problems, but you have to modify your stock valve covers a little, this was fairly easy, once you've had the upper intake off before, you know exactly what to do, i had to learn about the vaccuum lines and such, but no problem now.

srv1 · 11-16-2002, 09:31 AM

Quote:

Originally posted by jim_howard_pdx
So I would pull each plug, fill the cylinder with a bunch of thick but flexible string, and then compress the cylinder until the string or rope compresses against the combustion chamber. Now you can pull off the locks and retainers, and change out the springs.

This is an "ol guy" trick we used, before compressed air was discovered.......he he he......

explain this trick. i cant see how it is done.

Eric4Nitrous · 11-16-2002, 09:37 AM

screw the string..just shoot air in the cylinder.

11-15-2002, 12:12 AM	#1
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	!.7 rockers Are these rockers hard to install? Are there any diffrence in the crane "cobras" and the ones from ford? Are they both pedastal mount, are shims needed? Can I use my old pushrods? Do they add much power (noticable)?I'm changing my intake gaskets and thought I might add these and fresh valvesprings while the intake is off. Thanks Guys SKI __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-15-2002, 02:57 AM	#2
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	RR They are fairly easy to install and you can get instructions from Crane's website. The Crane RR are the ones that Ford used on the 93 Cobras. You will not notice any major power improvements. It will reduce wear and friction. We did not need any shims when doing the install on a 92 coupe. Depends on the condition of your valvetrain. They will come with the shims anyway. __________________ You're gonna need your seatbelt

11-15-2002, 03:09 AM	#3
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Can you reuse the stock pushrods? What valve spring will I need? Thanks!! __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-15-2002, 03:11 AM	#4
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	Stock everything. You can use your springs too unless they are worn out. How many miles are on the car? __________________ You're gonna need your seatbelt

11-15-2002, 03:25 AM	#5
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	__________________ You're gonna need your seatbelt

11-15-2002, 03:27 AM	#6
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	She's pushing 150,000, I figure they need it! Especially if I get the 1.7 RR's __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-15-2002, 03:28 AM	#7
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	If it were my car, (I have more miles than you) I would put new springs on. __________________ You're gonna need your seatbelt

11-15-2002, 03:34 AM	#8
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Thanks for your help! I don't know much about valvetrain, when you say stock everything I guess retainers or locks or whatever they're called can be reused also or do I need them with new springs? I'm guessing you used compressed air through spark plug hole to keep valves from falling in? I'm told this is how to do it. __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

11-15-2002, 03:40 AM	#9
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	yes, yes, and yes __________________ You're gonna need your seatbelt

11-15-2002, 02:12 PM	#10
jim_howard_pdx Registered Member Join Date: Apr 2002 Location: Portland Oregon Posts: 247	If you have a lot of miles on your engine, I expect your blow by has increased, you may have poor cylinder sealing at the rings, or worn cylinder walls. Many engines will have some pitting on the valve faces, and poor sealing on the valves to boot. So I would pull each plug, fill the cylinder with a bunch of thick but flexible string, and then compress the cylinder until the string or rope compresses against the combustion chamber. Now you can pull off the locks and retainers, and change out the springs. This is an "ol guy" trick we used, before compressed air was discovered.......he he he...... But again, I would do this anyway because I have had new fresh engines that still dropped the valve with high air pressure in the cylinder. The rope might end up saving you time and distress. __________________ 1966 Customized for daily street and highway domination. 358 Windsor running 425 HP C-4 Auto and 3.25 Posi

11-16-2002, 01:27 AM	#11
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Read my post on these, the cranes are pretty good, i gained some good power, far as i know, my car is around 180k, and i didnt change springs, i left everything as it was, just bolted in the pedestal 1.7's, if you need more directions let me know, i didnt use shims, and i have no problems, but you have to modify your stock valve covers a little, this was fairly easy, once you've had the upper intake off before, you know exactly what to do, i had to learn about the vaccuum lines and such, but no problem now. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

11-16-2002, 09:37 AM	#13
Eric4Nitrous Registered Member Join Date: Jan 2002 Location: Va Posts: 1,122	screw the string..just shoot air in the cylinder. __________________ 68 Camaro Gene Fulton 632ci Two stages of Jug 8.41 164mph Rockingham 1-26-03

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