nickrule99
15+ Year Contributor
- 502
- 0
- Jun 14, 2003
-
Greenfield,
Massachusetts
Hey guys-
I dropped my stuff off at the machine shop the other day, and they told me my block was bored out to much... there was 6.5 thousandths between the piston and the wall. So I called up Ross to check with them, and they guy I spoke to said 6.5 was to large, it would work, but it would be noisy, and 4 thousandths clearance would be better. So, I ended up buying another block for the machine shop to bore out to waht they said should only be 2 thousands, but I told them 4 since thats what Ross told me.
Well, the shop called againt today, asking what side of the piston was intake and which was exhaust. I didnt know so I called up ross again. The told me the logo was towards the intake side (is this true?) and then I asked about what they recomended for clearance. He asked what boost I was planning to run (I said 15-25) and he said I should go with something between 5.5 and 6.5 thousands of clearance.
So now I dont know what to tell the shop. They say I should have it bored to 2 thousands clearance between the piston and wall, and ross is telling me both 4 thousandths and 5.5-6.5 thousandths.
Im supposed to call the machine shop back and let them know what side of the piston is which, but turns out it doent matter because an Eagle rod can be mounted either way?
So... Im going to call the machine shop back and tell them to not touch the block yet, but if any of you can help me out I'd GREATLY appreciate it.
The pistons have 8.5:1 compression
and Im using Eagle rods.
Thanks guys.
-Nick
EDIT:
Did a search and found .003 to .0065 to be ok...
Anyone care to chime in about what their clearances were, and if they get much/any piston slap?
I think right now I'll tell the Machine shop to make the clearance .0045, sound good?
I dropped my stuff off at the machine shop the other day, and they told me my block was bored out to much... there was 6.5 thousandths between the piston and the wall. So I called up Ross to check with them, and they guy I spoke to said 6.5 was to large, it would work, but it would be noisy, and 4 thousandths clearance would be better. So, I ended up buying another block for the machine shop to bore out to waht they said should only be 2 thousands, but I told them 4 since thats what Ross told me.
Well, the shop called againt today, asking what side of the piston was intake and which was exhaust. I didnt know so I called up ross again. The told me the logo was towards the intake side (is this true?) and then I asked about what they recomended for clearance. He asked what boost I was planning to run (I said 15-25) and he said I should go with something between 5.5 and 6.5 thousands of clearance.
So now I dont know what to tell the shop. They say I should have it bored to 2 thousands clearance between the piston and wall, and ross is telling me both 4 thousandths and 5.5-6.5 thousandths.
Im supposed to call the machine shop back and let them know what side of the piston is which, but turns out it doent matter because an Eagle rod can be mounted either way?
So... Im going to call the machine shop back and tell them to not touch the block yet, but if any of you can help me out I'd GREATLY appreciate it.
The pistons have 8.5:1 compression
and Im using Eagle rods.
Thanks guys.
-Nick
EDIT:
Did a search and found .003 to .0065 to be ok...
Anyone care to chime in about what their clearances were, and if they get much/any piston slap?
I think right now I'll tell the Machine shop to make the clearance .0045, sound good?