Hughes "retro fit" lifter not pumping up!
FOUND THE PROBLEM!
The bad lifter has not been machined correctly near the oil hole that resides in the lifter bore. As you look at the pictures you can see the night and day difference. If one buys these lifters the only way to know for sure that the lifters are going to pump up is (a) put them in ...run them and hope for the best (b) take each lifter apart and see that they have been machined correctly around the oil hole or (c) pump them up manually by hand. Hughes states on their website just wipe them off, apply 10w30 on the outside and on the roller. So I did as I was instructed and now I had to take the intake back off as well as the head because I didn't soak them or pump them up manually. Thanks Hughes! THANKS FOR HAVING TO TEAR DOWN THE ENGINE AGAIN!!
With the machined groove the oil hole is much bigger than without it being machined. In the bad lifter without the machined groove the oil hole is very small. It's there but it is nothing like the size it should be compared to the good lifter that was pumping up.
Good lifter
BAD lifter
FOUND THE PROBLEM!
The bad lifter has not been machined correctly near the oil hole that resides in the lifter bore. As you look at the pictures you can see the night and day difference. If one buys these lifters the only way to know for sure that the lifters are going to pump up is (a) put them in ...run them and hope for the best (b) take each lifter apart and see that they have been machined correctly around the oil hole or (c) pump them up manually by hand. Hughes states on their website just wipe them off, apply 10w30 on the outside and on the roller. So I did as I was instructed and now I had to take the intake back off as well as the head because I didn't soak them or pump them up manually. Thanks Hughes! THANKS FOR HAVING TO TEAR DOWN THE ENGINE AGAIN!!
With the machined groove the oil hole is much bigger than without it being machined. In the bad lifter without the machined groove the oil hole is very small. It's there but it is nothing like the size it should be compared to the good lifter that was pumping up.
Good lifter
BAD lifter