Valve Clearances - Help with calculation?
#1
PassionFord Post Whore!!
Thread Starter
Valve Clearances - Help with calculation?
Hello team.
Gotta shim up my inlet cam again, and want it done as quick and painless as possible. Has anyone got any calculation to work out the correct shim size?
For example, I'm using buckets with 3,100 on (some are 3,000 etc all between 2,950 and 3,150) Shims are 0.09 of an inch thick, and I can get a gap of 15 on the feeler gauge, between bottom of lobe and bucket.
I need the clearance to be between 0.08 and 0.10 (8 and 10 thou (?) )
Any ideas?
Sorry about all the barbling numbers and shit, but want this painful bit over and done with ASAP. If only I hadn't fucked snapped a sprocket bolt!!!!!!!!!!
Gotta shim up my inlet cam again, and want it done as quick and painless as possible. Has anyone got any calculation to work out the correct shim size?
For example, I'm using buckets with 3,100 on (some are 3,000 etc all between 2,950 and 3,150) Shims are 0.09 of an inch thick, and I can get a gap of 15 on the feeler gauge, between bottom of lobe and bucket.
I need the clearance to be between 0.08 and 0.10 (8 and 10 thou (?) )
Any ideas?
Sorry about all the barbling numbers and shit, but want this painful bit over and done with ASAP. If only I hadn't fucked snapped a sprocket bolt!!!!!!!!!!
#4
PassionFord Post Whore!!
Thread Starter
Thanks Steve -It's probably easy but all the fucking decimal places are twatting around in my head.
That made it easier though. Thanks.
That made it easier though. Thanks.
#5
Measure them all and work out what you think you need, you might be able to swap a few around. Those you can't will have to be replaced with new shims of the correct thickness. Once you have rebuilt the head measure again as some are bound to have gone out of tolerance.
Engine builders tend to have a good range of shims for the common engines and equipment to linish oversize shims.
Engine builders tend to have a good range of shims for the common engines and equipment to linish oversize shims.
#6
PassionFord Post Whore!!
Thread Starter
Got LOADS of buckets, and LOADS of shims, it's just gonna take time shifting through them to get the correct ones lol.
Gonna take all the messurements saturday and go frmo there, hopefully I'll crack it pretty quickly then I can get back on with putting engine bacvk in.
Thanks guys.
Gonna take all the messurements saturday and go frmo there, hopefully I'll crack it pretty quickly then I can get back on with putting engine bacvk in.
Thanks guys.
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