does anyone see anything wrong here?
- Thread starter E-Rue
- Start date
4C FED said:
Yes there is a potential problem there. It's not recommended to use both self aligning rocker arms and pushrod guide plates together as it will often result in either munched pushrods or broken rocker tips (if using roller rockers) along with accelerated valve guide wear.
If you don't believe me call up crane, crower or one of the other reputable roller rocker/cam/valvetrain companies and ask them for their advise/input. Most will even state on their website, catalog or the instructions that come with self-aligning rockers that self-aligning rocker arms should not be used in conjunction with pushrod guide plates. An example that I found quickly is http://www.cranecams.com/master/goldrace.htm
HTH
I hate when that happens!
I hate when that happens!
I see a rocker arm stud backed out of the threads and not holding the guide plate down on the bottom pic.......
When they back out that way the valves don't open very much......
Is that a figment of my demagination? or is that the problem?
Do I get a prize?
I hate when that happens!
I see a rocker arm stud backed out of the threads and not holding the guide plate down on the bottom pic.......
When they back out that way the valves don't open very much......
Is that a figment of my demagination? or is that the problem?
Do I get a prize?
TurboManiacal
Donating Member
Loeryder said:
#1) Rich, I'm seeing the error in my ways....
#2) Hmmmm metal shavings...yummy
#3) Fear and rumors make you do strange things.
myclone
Donating Member
IMO I would pull the rockers and push rods to check them out. If they arent scuffed from the guide plates being there then reinstall the push rods and chuck the self aligning rockers on the shelf. Get yourself some non self aligning rockers to go back on there. Old school small block chevy/4.3s use non self aligning rockers if you dont wanna do the rollers at this time.
You could, however, use the aligning rockers by removing the guide plates IF the heads are drilled deep enough to run the studs down tight without em AND if the rocker studs are long enough to still allow the rocker adjusting nut to do its thing once the valves are lashed.
If the heads arents tapped deep enough then you could cut the push rod "guide" portion of the guide plates off and just use whats left as a spacer between the studs and head. Cheap but a PIA to do. Dont even attempt cutting them with a hacksaw. You'll need a chop saw or air cut off disc to even make a dent in em. BTDT.
Looks to me like the pushrod holes are REAL close to the slots in the heads going by the pics. I would be concearned with them rubbing if you go with 1.6s. Only prob is, to open em up will require pulling the intake to put rags/whatever in the lifter valley to keep out the metal shavings. In a nut shell the slots can be opened up with the heads on the eng IMO but its a PIA to do.
If it was my eng Id check out the push rods like was mentioned. If they are ok then reinstall them. Remove self aligning rockers and install a non self aligning type of 1.5 ratio. Adjust valve lash. Put the eng back togeather and derby the wee outta it. No fuss no muss.
You could, however, use the aligning rockers by removing the guide plates IF the heads are drilled deep enough to run the studs down tight without em AND if the rocker studs are long enough to still allow the rocker adjusting nut to do its thing once the valves are lashed.
If the heads arents tapped deep enough then you could cut the push rod "guide" portion of the guide plates off and just use whats left as a spacer between the studs and head. Cheap but a PIA to do. Dont even attempt cutting them with a hacksaw. You'll need a chop saw or air cut off disc to even make a dent in em. BTDT.
Looks to me like the pushrod holes are REAL close to the slots in the heads going by the pics. I would be concearned with them rubbing if you go with 1.6s. Only prob is, to open em up will require pulling the intake to put rags/whatever in the lifter valley to keep out the metal shavings. In a nut shell the slots can be opened up with the heads on the eng IMO but its a PIA to do.
If it was my eng Id check out the push rods like was mentioned. If they are ok then reinstall them. Remove self aligning rockers and install a non self aligning type of 1.5 ratio. Adjust valve lash. Put the eng back togeather and derby the wee outta it. No fuss no muss.
GEN3Typhoon
New member
Please cleat this up
Please cleat this up
So for clarity... who did this motor?
Also when I used the Vortec heads I had the heads milled so that the guide plates could be used. Also had the stock stud holes drilled and tapped for larger studs.. I am using some rockers that are way over kill but are very nice.
One other point is that you have to be sure to use the correct pushrods with guide plates. They are not the same... maybe this is where the person who was talking about metal was suggesting it would come from.
If this is someone that claims to be an "engine builder" I would be very leary of putting a lot boost to the motor if they don't even know the difference between self aligning and non-self aligning rockers.
Please cleat this up
So for clarity... who did this motor?
Also when I used the Vortec heads I had the heads milled so that the guide plates could be used. Also had the stock stud holes drilled and tapped for larger studs.. I am using some rockers that are way over kill but are very nice.
One other point is that you have to be sure to use the correct pushrods with guide plates. They are not the same... maybe this is where the person who was talking about metal was suggesting it would come from.
If this is someone that claims to be an "engine builder" I would be very leary of putting a lot boost to the motor if they don't even know the difference between self aligning and non-self aligning rockers.
not gonna point fingers.
"this person" just needs to get it fixed.
does anyone see any reason why these wont work?
*1102-12B Chevrolet V6 200-262 3/8" 1.6
http://www.compcams.com/information/Products/RockerArms/HiTechStainless.asp
e
"this person" just needs to get it fixed.
does anyone see any reason why these wont work?
*1102-12B Chevrolet V6 200-262 3/8" 1.6
http://www.compcams.com/information/Products/RockerArms/HiTechStainless.asp
e
GEN3Typhoon
New member
I understand...
Those rockers should be fine... be sure to check your pushrods are the right type.. and good luck
Those rockers should be fine... be sure to check your pushrods are the right type.. and good luck
V6 Kompressor
New member
E-RUE said:.
"
does anyone see any reason why these wont work?
*1102-12B Chevrolet V6 200-262 3/8" 1.6
http://www.compcams.com/information/Products/RockerArms/HiTechStainless.asp
e
They should work, but make damn sure the slots in the heads, where the pushrods run through them, have enough clearance around the pushrods... Summit/jegs sells a drill/clearance tool for drilling the slots out to clear. I think someone pointed this out earlier... You may encounter problems with the valvecover though.... (clearance).
GEN3Typhoon
New member
Here is the setup that I use on my truck... no problems clearing the valve covers with one set of FelPro gaskets.
Thought you would like to know. My Rockers are full needle bearing fulcrum 1.6 ration Crowers.
http://www.usionline.net/hpm/1993 Typhoon/110401/pages/110401 01 Welded Guide.htm
Thought you would like to know. My Rockers are full needle bearing fulcrum 1.6 ration Crowers.
http://www.usionline.net/hpm/1993 Typhoon/110401/pages/110401 01 Welded Guide.htm
TurboManiacal
Donating Member
I think E wants to run some plastic Vortec valve covers...not sure how they do on clearance though...