Groove In BBC Lifter Bore - Page 2

Dwight Southerland · 02-16-2018, 11:17 PM

Carl, you have to allow for the fact that the angle of the lifter bore is also off in the old blocks. That does effect the valve event timing regardless of the lifter type.

carl hinkson · 02-17-2018, 07:36 AM

Quote:

Originally Posted by Dwight Southerland

Carl, you have to allow for the fact that the angle of the lifter bore is also off in the old blocks. That does effect the valve event timing regardless of the lifter type.

It would have to be off 5 degrees to have any effect and I have not seen any that far off.

Do machine lifter bores ???

Alan Roehrich · 02-18-2018, 06:54 PM

Quote:

Originally Posted by brian schuetta

What are your thoughts on cutting a vertical groove in a BBC lifter bore for flat tappet cam lifters?

I never do it. I consider it a crutch, at best, which does not actuallysolve any problem, at best it might mask a symptom.

02-16-2018, 11:17 PM	#11
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,001 Likes: 64 Liked 780 Times in 194 Posts	Re: Groove In BBC Lifter Bore Carl, you have to allow for the fact that the angle of the lifter bore is also off in the old blocks. That does effect the valve event timing regardless of the lifter type. __________________