This is topic some h/c/i set ups for 5.0L require flycut pistons in forum Tech Talk at Northern California Ford Owners  .


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Posted by gercolla1 (Member # 3068) on :
 
This is something that I've heard of people doing themselves. Does this procedure usually require the removal of alot of material? Does one simply remove a generous amount to be on the safe side? Or do I just leave it alone and find a cam that doesnt require piston modifications?

btw,I am trying to use edblk 6025's with the 2.02 intake valves on a low mile 93 short block that I believe has hypertec/non forged pistons,is that better or worse? I am clueless
 

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Posted by mtbaughs (Member # 4052) on :
 
Contact Apex Motorsports, they have a fly cutting tool specially made to do this job in the car(i.e. shortblock installed). Doesn't matter what type of piston.
 

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Posted by 98slowhoe I don't have a fast car (Member # 895) on :
 
the Hyp. pistons are not recomended with boost or N20, the forged is stronger but thats not really a problem for you though. Talk to Acames or 93pony they did a fly cut job once and can tell you how to do it.
 

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Posted by gercolla1 (Member # 3068) on :
 
Great leads,Thanks
 

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Posted by JohnB (Member # 969) on :
 
Depending on the size of the cam you're running, you do NOT need to fly-cut the pistons. I'm running the same heads on a 93 stock shortblock with a TFS Stage 1 cam..no problems here.
 

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Posted by mtbaughs (Member # 4052) on :
 
True, you can get away with it with a tame cam. Most people just tend to run a healthy cam on a 302 with those size valves and usually higher compression or a blower.
 

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Posted by AaronC (Member # 86) on :
 
I have the Isky notching tools and 93Pony did the notching. Pretty easy to do. Just time consuming. We checked every cylinder's P/V clearance. I cut .095" exhaust and .065" intake. Total clearance for each was minimum of .125" to be on the very safe side. I run a fairly large cam with 232/228 duration at .050 on a 110 LSA with very steep ramp rates.
 

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Posted by Black94 5.0 (Member # 655) on :
 
Personally, I would rather buy new pistons....

I dont think it's worth the time and effort, especially when you're making a 93 hyperutetic piston weaker...Now is your chance to get some nece forged pistons....
 

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Posted by gercolla1 (Member # 3068) on :
 

quote:

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Originally posted by JohnB:
Depending on the size of the cam you're running, you do NOT need to fly-cut the pistons. I'm running the same heads on a 93 stock shortblock with a TFS Stage 1 cam..no problems here.

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hey John, is that cam badass or what?
 

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Posted by JohnB (Member # 969) on :
 
I've had nothing but fun with this combo. Stock shortblock, O-ring'd 2.02 heads with a TEA portjob, Ported Edlebrock intake, 1.6 rollers, Stage 1 cam..and..oh ya, the SQ-trim.

The stock shortblock is getting tired...so the new shortblock is in the works now.
 

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Posted by jmcclesk (Member # 1355) on :
 
I talked to the head piston guy at keith black (save o lite) John Erb a few years back and he assured me that a cut of .070 on a hyper-u piston is ok, he also said a cut of .070 to .100 SHOULD be ok on a hyper-u but you are pushing it. On forged pistons a cut of .100 is safe. I have a cut of .070 on my 93 motor and it has a lot of passes at the strip (150 plus) with no problems.
 

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Posted by gercolla1 (Member # 3068) on :
 

quote:

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Originally posted by JohnB:
I've had nothing but fun with this combo. Stock shortblock, O-ring'd 2.02 heads with a TEA portjob, Ported Edlebrock intake, 1.6 rollers, Stage 1 cam..and..oh ya, the SQ-trim.

The stock shortblock is getting tired...so the new shortblock is in the works now.

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would you say that the tfs1 is still a good cam for a na car as well? would you happen to have the part#? or would you or anyone else suggest another?
 

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