Only two of the buckets I've installed so far have slid onto my valves freely. One other one went on with a minimal amount of very light tapping, but I took it out because I know that's not what it's supposed to be like. What causes this? When I took the head off, they all slid out perfectly fine. Suggestions?
What causes valve buckets to not slide onto the valves freely?
- Thread starter 87mgte
- Start date
87mgte;991111 said:
Are you putting them in dry or with a little oil? The tolerance is also very tight if the are not perfectly square when you try to drop them in they will bind. Take it slow and you should be fine.
i took out 24+24+24 buckets in the past two weeks... and the problem is that you have to put them in straight onto the springs. if they give you a little trouble, tap them to one side, or just tap them in, as once they are in, they seat themselves.
I cleaned mine off and they did not go in easily without a lot of oil on them. I tapped them with a hammer and cloth and they all slide in fine with that little bit of coercing.
Rennat;991137 said:
Uhhh... I know they have to be straight on the springs. With clearances that tight, they won't just glide in there loosely with room to spare.
When I took the head off and flipped it upside down, all the buckets came out smoothly. Now, after reinstalling the valves using the "secret weapon", My buckets won't fit. Is my head basically screwed or is there somethin I can do to make em fit?
87mgte;991879 said:
Uhhh... Unless you scratched or nicked up the bore when you serviced the head they should drop right in once lined up properly. No ifs, ands or buts, they should fall in just like they fell out when you removed them.
and
IJ.;970329 said:
Well, the TSRM directs you keep the lifters/shims in order when removed:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=41
(I'm thinking there's a good reason for this)
It also has a oil clearance spec for the lifter in the head:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=49
(I know there's a good reason for this one)
When installed, the lifters should rotate freely by hand...I'm not too sure about the hammer tap in technique.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=41
(I'm thinking there's a good reason for this)
It also has a oil clearance spec for the lifter in the head:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=49
(I know there's a good reason for this one)
When installed, the lifters should rotate freely by hand...I'm not too sure about the hammer tap in technique.
jdub;992057 said:
Oops. Nice catch. I totally assumed that was a given. A 24 compartment (4 rows of 6) lure/bait box works great and is easy to label.
Side note on this 
Cryo treating buckets is bad mmmkay!
(they relax and swell at the open end and won't fit back in their bores)
Cryo treating buckets is bad mmmkay!
(they relax and swell at the open end and won't fit back in their bores)
Aspec;992043 said:
I haven't touched the bores except for to clean em with a rag as far as I know. So I'm guessing something went wrong with my head somewhere between the teardown, machine shop, and my house, and I now need a new head. My friend that's hopefully coming over today has an n/a head, so I'll probably have to end up using that and then swapping the cams over. Shit, hope it's assembled.
jdub;992057 said:
I remmber takin philips head and poking holes in old oil cans to put push rods in.. then neatly lay lifters in valve covers in order :} aint seen a oil can in 25 years i bet
LOL...that's funny Hommer. Did the same thing back in the day
87mgte - I doubt you need a new head (unless there's another issue)...it looks like to me you mixed the lifters/shims up, here's what I would do: Take each one and go around the different valve bores till you find a fit. You going to be playing "find the pea under the cup" for a bit here. You'll have to do this by feel...the lifter should just slide in if aligned correctly. Once you get them all in, check the clearances...if good, press on. If you find one that's tight and one that's loose, swap them.
After all this, you'll have to check valve lash clearance...you might need some new shims.
87mgte - I doubt you need a new head (unless there's another issue)...it looks like to me you mixed the lifters/shims up, here's what I would do: Take each one and go around the different valve bores till you find a fit. You going to be playing "find the pea under the cup" for a bit here. You'll have to do this by feel...the lifter should just slide in if aligned correctly. Once you get them all in, check the clearances...if good, press on. If you find one that's tight and one that's loose, swap them.
After all this, you'll have to check valve lash clearance...you might need some new shims.
90T04;991122 said:using a valve tool like this and scratching up the bores
yeah, don't use that. heh, i used it.
:nono:
There is a reason why each bucket has to go to a certain valve. Because when the metal expands each time after long periods of time each one will be very and I mean very slightly different. Thats why the TSRM has you keep each bucket for each valve.
I also have a 96 saturn that uses the same setup. And in their repair manual they have annotated the same thing where you have to have them organized. So this is what I did. I did a egg carton and numbered each one and put each bucket and shim in each egg slot so that way it was easy to remember and keep organized. YOU DONT NEED A NEW HEAD! As long as its been machined properly and you have the right shims you should be fine. I remember when I built my jg turbo head for the saturn I used diamond cut solid buckets instead of the regular hydraulic ones so dont worry you should be fine just go through each bucket and each one will fit accordingly.
I also have a 96 saturn that uses the same setup. And in their repair manual they have annotated the same thing where you have to have them organized. So this is what I did. I did a egg carton and numbered each one and put each bucket and shim in each egg slot so that way it was easy to remember and keep organized. YOU DONT NEED A NEW HEAD! As long as its been machined properly and you have the right shims you should be fine. I remember when I built my jg turbo head for the saturn I used diamond cut solid buckets instead of the regular hydraulic ones so dont worry you should be fine just go through each bucket and each one will fit accordingly.