Valve spring shim for beehives
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Teching In
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Valve spring shim for beehives I've searched and searched and I can't find a valve spring shim for the .880 diameter valve seat for the beehives springs. My heads were machined to fit a 1.900 installed height double valve spring and I recently swapped them w/ a set of PAC 1218's. Well I have been through hell trying to get the 1218's at the 1.80" installed height, I put shims underneath the seat to bring them up but all that does is push the seat up so the seal doen't sit all the way down onto the guide. So i need a shim that fits ontop of the seat instead. Anybody know of any shims that have at least a .885" ID? Thanks in advanced for your help.
I've searched and searched and I can't find a valve spring shim for the .880 diameter valve seat for the beehives springs. My heads were machined to fit a 1.900 installed height double valve spring and I recently swapped them w/ a set of PAC 1218's. Well I have been through hell trying to get the 1218's at the 1.80" installed height, I put shims underneath the seat to bring them up but all that does is push the seat up so the seal doen't sit all the way down onto the guide. So i need a shim that fits ontop of the seat instead. Anybody know of any shims that have at least a .885" ID? Thanks in advanced for your help.
Thread Starter
Teching In
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I'm not quite sure, i'd have to mic it but at the moment i'm about 10 miles away from my shop. But my brother is at the shop, i'll get him to Mic them for me.
He says the height of the seat where the spring sits is a .058 and the OD is a 1.303.
So with the measurment in hand I used my valve spring mic and mic'ed it to be a 1.890 w/ the seat installed. I don't have the double springs because I sold them to a friend.
He says the height of the seat where the spring sits is a .058 and the OD is a 1.303.
So with the measurment in hand I used my valve spring mic and mic'ed it to be a 1.890 w/ the seat installed. I don't have the double springs because I sold them to a friend.
I'm not quite sure, i'd have to mic it but at the moment i'm about 10 miles away from my shop. But my brother is at the shop, i'll get him to Mic them for me.
He says the height of the seat where the spring sits is a .058 and the OD is a 1.303.
So with the measurment in hand I used my valve spring mic and mic'ed it to be a 1.890 w/ the seat installed. I don't have the double springs because I sold them to a friend.
He says the height of the seat where the spring sits is a .058 and the OD is a 1.303.
So with the measurment in hand I used my valve spring mic and mic'ed it to be a 1.890 w/ the seat installed. I don't have the double springs because I sold them to a friend.
Thread Starter
Teching In
Joined: Aug 2006
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cats out the bag... Ported LT4's Eric Bradby did them for a friend of mine and the friend got out of the racing scene and i'm left w/ the headaches of them. I know this is a LS1 tech section but more LSx engines use the beehives/PAC springs due to they were orignally made for them. I'm just looking for a .885 ID shim set that fit the bottom seat. Any suggestions? I put the .090 shims under the seat and they fit lose on the guide but won't fit overtop of the seat. Plus, my guide diameter is a .562 and its impossible to find a seal that works w/ them. I've been stretching a .531 diameter so far but the .090 in shims won't let the seal sit down all the way onto the guide. So I need the .090 to be made up in shims to sit down on top of the seat.
cats out the bag... Ported LT4's Eric Bradby did them for a friend of mine and the friend got out of the racing scene and i'm left w/ the headaches of them. I know this is a LS1 tech section but more LSx engines use the beehives/PAC springs due to they were orignally made for them. I'm just looking for a .885 ID shim set that fit the bottom seat. Any suggestions? I put the .090 shims under the seat and they fit lose on the guide but won't fit overtop of the seat. Plus, my guide diameter is a .562 and its impossible to find a seal that works w/ them. I've been stretching a .531 diameter so far but the .090 in shims won't let the seal sit down all the way onto the guide. So I need the .090 to be made up in shims to sit down on top of the seat.
Not familiar with the LT head, but having said that, will the newer style seat/seal fit? When I shimmed my beehives, they sat on top of the seat/seal. They were Comp shims. I can get the part number if you need them. You can see them in the various stages of installation below.
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I would cut the retainer but as **** as I am about metal/dust/dirt then the heads would definatly have to be taken off the car. And I would almost rather pull the motor out than try to take the heads off of the motor being that its fully studded, its going to be a fight 
Vettenuts, if you can get me a part number I can see if the ID of the shims will work the OD of the seat where the spring sits onto.
But I really appreciate both of your replies. I am at a dead end with this mess
Vettenuts, if you can get me a part number I can see if the ID of the shims will work the OD of the seat where the spring sits onto.
But I really appreciate both of your replies. I am at a dead end with this mess
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Verdad Gallardo The ones I used are the top three on the list, 0.015", 0.030" and 0.060" thick shims. They look to be slightly small on the ID though. Wonder if you can open them at all on a drill press. Won't take much. Notice also there is a kit that includes all three thickness in the kit section.
Also, have you considered an offset retainer to bring the top of the spring down?
Also, have you considered an offset retainer to bring the top of the spring down?
