New roller lifters for the 8.1L
#1
New roller lifters for the 8.1L
Hey guys!
I have a 2001 Suburban with a 8.1L (150,000miles), that has a strange problem.
It starts up and runs smother, sounds great, lots of power. However when I rev it to 2,500 RPMs I get a loud ticking sound. It sounds just like a rocker arm clapping. Now the noise is happening at lower rpms.
I just pulled off the valve covers and everything seems to be OK and tight. Now I suspect I have a weak lifter.
My question is, can I replace the lifters WITH OUT pulling the heads?
I have done this MANY times on Dodge trucks, but this is my first time to dig into the 8.1L. Do you have any tips or tricks? Estimated time doing this? Looks like a 3 hour job or so.
Kind regards,
Nathan
I have a 2001 Suburban with a 8.1L (150,000miles), that has a strange problem.
It starts up and runs smother, sounds great, lots of power. However when I rev it to 2,500 RPMs I get a loud ticking sound. It sounds just like a rocker arm clapping. Now the noise is happening at lower rpms.
I just pulled off the valve covers and everything seems to be OK and tight. Now I suspect I have a weak lifter.
My question is, can I replace the lifters WITH OUT pulling the heads?
I have done this MANY times on Dodge trucks, but this is my first time to dig into the 8.1L. Do you have any tips or tricks? Estimated time doing this? Looks like a 3 hour job or so.
Kind regards,
Nathan
#3
Looking down through the push-rod valley down towards the lifters it looks like I have lots of room, like 5 inches from the bottom of the lifter-valley to the head.
Are you 100% confident that I have to remove the heads?
EDIT,, Check out these pics I found
http://www.ebay.com/itm/GMC-8-1L-496...#ht_500wt_1202
Are you 100% confident that I have to remove the heads?
EDIT,, Check out these pics I found
http://www.ebay.com/itm/GMC-8-1L-496...#ht_500wt_1202
Last edited by nathan_; 10-16-2011 at 10:32 AM.
#6
Is it because there isn't enough clearance to pull them with the heads on? I haven't messed with one yet. It just seems like they should come out with the heads on.
#8
I asked the sell on EBAY if he could remove the lifter without pulling the heads, here is is response.
As it turns out, the heads do not need to be removed. The lifters can be accessed once the intake plenum, rockers and push-rods have been removed. Basically the space within the "V" must be cleared to access the area. This can be seen in the second of the three images in this auction.
I hope this is of help to you!
I hope this is of help to you!
#9
Yeah after my response last night I meant to edit and ask if it was LSX based. My fault guys. I assumed since it was in a 2001 that it was.
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