Foxy Green Foxbody Build

Watching a few piston to valve clearance videos. The numbers they shoot for seem to be all over the place.

Is .100 exhaust and .080 intake the minimum on a street car with hyd roller?
 
89 Fox 427 said:
Watching a few piston to valve clearance videos. The numbers they shoot for seem to be all over the place.

Is .100 exhaust and .080 intake the minimum on a street car with hyd roller?
Click to expand...
Why not ask the guy building the shortblock?
 
89 Fox 427 said:
Watching a few piston to valve clearance videos. The numbers they shoot for seem to be all over the place.

Is .100 exhaust and .080 intake the minimum on a street car with hyd roller
Click to expand...
I
89 Fox 427 said:
Watching a few piston to valve clearance videos. The numbers they shoot for seem to be all over the place.

Is .100 exhaust and .080 intake the minimum on a street car with hyd roller?
Click to expand...
Bet your asking just for info.
Not your engine in particular.

Deck height is part of equation, piston skirt clearance, cause piston rock.
Valve head to piston head is one clearance, valve radial clearance to piston relief is another concern.
If it is high revving and has valve toss you need more.
Many variables to what a minimum clearance needs to be on a max effort deal.
 
Diving in as to the best way to check for pushrod length. With Hydraulic roller lifters I was concerned with the lifters not being pumped up, or getting false readings. I don't have a solid lifter to test, and didn't really want to mess with disassembling them or adding other variables. Stumbled upon Scott foxwell's method (straub technologies) and that looks like the best way to go. Someone go tell him to join this forum

 
89 Fox 427 said:
Diving in as to the best way to check for pushrod length. With Hydraulic roller lifters I was concerned with the lifters not being pumped up, or getting false readings. I don't have a solid lifter to test, and didn't really want to mess with disassembling them or adding other variables. Stumbled upon Scott foxwell's method (straub technologies) and that looks like the best way to go. Someone go tell him to join this forum

Click to expand...
If you wanna make good friends with scott just mention straub technologies to him
 
I fucked off and spent the afternoon watching intake port matching videos and the Engine Masters episode.
For street use I'm not going to bother.
 
Here's another overthinking dumb one.
How do I check piston to valve clearance without pushrods. How do I measure for pushrods if I'm not sure if i have piston to valve clearance?

My thought would be to check ptv clearance with dial indicator and not clay at first. use lightweight checker springs and put the engine 10 to 20 degrees before (and after) TDC and push the valve down and see how far it is from contact. Is this an appropriate method?

If you guys recall, my valves had no radial clearance when I got the engine back from the first builder and I don't want to risk bending a valve
 
Your valvetrain needs to be squared away before you measure clearance.
Pushrod length has nothing to do with clearance; you get that right and then check clearance.
Pushing the valves down checks up and down clearance, but yeah, it won't check radial.
 
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