Pistons - Please

[schmeky]

I spoke with customer support at Mahle. They indicated there should be no issue with the oil jets with the piston package I am using (Mahle #9302583620).

They did not recommend removing the oil jets.

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[Jackson1320]

I spoke with customer support at Mahle. They indicated there should be no issue with the oil jets with the piston package I am using (Mahle #9302583620).

They did not recommend removing the oil jets.

You talked to someone who answers phones for a living and asked them about engine building!

If the pistons will clear the squirters then technology there’s nothing saying you can’t run squirters.
You should talk to some engine builders. I would think that the ptw clearance Would be effected sense the pistons are not going to expand as much being that the pistons temperature is going to be lower. It’s a domino effect

 

[schmeky]

I asked them if the oil jets were compatible with this specific piston set and they are.

I'll check each piston when I receive them and verify the recommended clearance of .0025 min to .0033" max based on the bore dimensions I mic'ed on this block.

Ford held the tolerances on the 2019 block's bore exceptionally well that I am using, with the max variation being only .0002".

 

[Jackson1320]

I asked them if the oil jets were compatible with this specific piston set and they are.

I'll check each piston when I receive them and verify the recommended clearance of .0025 min to .0033" max based on the bore dimensions I mic'ed on this block.

Ford held the tolerances on the 2019 block's bore exceptionally well that I am using, with the max variation being only .0002".

I’m sure there will not be any problems caused by running oil squirters. You just don’t need them. Is there any reason why you decided to use the gen3 block? What are you doing for a crankshaft, are you using a boss crankshaft or a 2018/2019 gt

 

[schmeky]

Using the original stock GT crank, it looks perfect.

 

[engineermike]

I asked them if the oil jets were compatible with this specific piston set and they are.

I'll check each piston when I receive them and verify the recommended clearance of .0025 min to .0033" max based on the bore dimensions I mic'ed on this block.

Ford held the tolerances on the 2019 block's bore exceptionally well that I am using, with the max variation being only .0002".

Spec I think is 3.7008-3.7016...what are you getting?

 

[Jackson1320]

Spec I think is 3.7008-3.7016...what are you getting?

Stock bore diameter on a GEN three coyote? Should be 3.661.
am I confused somehow?

 

[engineermike]

I was thinking 5.2 block; my mistake.

 

[Jackson1320]

I was thinking 5.2 block; my mistake.

I was looking back through all the posts trying to figure out where I messed up. if it was a 5.2 block that changes everything

 

[schmeky]

I bought a complete 2019, 5.0 GT engine out of a totaled Mustang, with 11K miles. Six bores mic'ed at 3.6620", 2 mic'ed at 3.6622".

 

[engineermike]

I bought a complete 2019, 5.0 GT engine out of a totaled Mustang, with 11K miles. Six bores mic'ed at 3.6620", 2 mic'ed at 3.6622".

Spec is 3.6614 –3.6622

 

[Jackson1320]

I bought a complete 2019, 5.0 GT engine out of a totaled Mustang, with 11K miles. Six bores mic'ed at 3.6620", 2 mic'ed at 3.6622".

That’s a good block. when I built my engine I just went down and got a brand new block from Ford for $700 New crankshaft for $350 my Short block all brand new parts with forge rods and pistons. Cost me $2900 Everyone thinks these engines are super expensive, they’re not. specially if you go pulling out of A f150. The 18 and up f150 and mustang share the same Short block and heads. The 2015 through 17 f150 and mustang share the same short block and heads Besides the compression ratio on the Pistons

 

[Angrey]

That’s a good block. when I built my engine I just went down and got a brand new block from Ford for $700 New crankshaft for $350 my Short block all brand new parts with forge rods and pistons. Cost me $2900 Everyone thinks these engines are super expensive, they’re not. specially if you go pulling out of A f150. The 18 and up same Short block and heads. 2015 through 17 same short block and heads Besides the compression ratio on the Pistons

Do the newer 5.0 blocks use the 12 mm head studs? Aside from sleeving (if you're going big power) I'd highly recommend converting to the 12mm studs. They're not just bigger (and have more hold power) they're deeper in the block and will give more insurance against head lift.

 

[Jackson1320]

Do the newer 5.0 blocks use the 12 mm head studs? Aside from sleeving (if you're going big power) I'd highly recommend converting to the 12mm studs. They're not just bigger (and have more hold power) they're deeper in the block and will give more insurance against head lift.

Yes 2018 blocks went back to the 12 mm head bolts

 

[schmeky]

Correct on the 2018+ using the 12mm head bolts, and they also reach down deeper into the block as well.

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