alum p-51 heads

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alum p-51 heads

Post  bigjohn2007 on March 28th 2013, 2:10 pm

useing arp lube what torque need to be?
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Re: alum p-51 heads

Post  512Fairlane on March 29th 2013, 10:06 pm

Recommended to me by Charlie for my P-51's 6 inner studs on each head 140 ft. lbs. Outer 4 studs 135 ft. lbs. Make sure you warm up the motor completely then let it cool overnight. Then retorque all studs. I failed to do this and ended up with some blown headgaskets. Charlie had to surface my heads slightly also.
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Re: alum p-51 heads

Post  c.evans on March 29th 2013, 10:14 pm

That was with oil on the threads. That will be a little too much with the ARP lube, and we need to back off a bit. Check the ARP website and see what they recommend. The re-torque after a heat cycle is very imo.

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Re: alum p-51 heads

Post  Dave C. on March 29th 2013, 10:16 pm

Not running P-51'S but I retorqued my heads and thought I was wasting my time until I found one loose stud..Glad I went through them now.... Twisted Evil

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Re: alum p-51 heads

Post  512Fairlane on March 29th 2013, 10:27 pm

Glad you piped in Charlie. I don't think I wrote down oil in my notes. Anyone ever use the CRC moly graphite assembly lube on threads? I used this stuff on my bearings and wondered if it is similar to the ARP lube.
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Re: alum p-51 heads

Post  69F100 on March 29th 2013, 10:52 pm

not sure but we use the crc at work look alot like the arp moly that cam with my rods for the bolts to me
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Re: alum p-51 heads

Post  512Fairlane on March 29th 2013, 11:00 pm

Just found this on ARP's website. They compare their stuff to Moly and oil.

http://www.arp-bolts.com/pages/viewcatalog.shtml
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Re: alum p-51 heads

Post  bigjohn2007 on March 30th 2013, 7:29 am

thanks guys
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 9:33 am

135-140 with 30 or 40 straight wt. oil

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Re: alum p-51 heads

Post  bigjohn2007 on March 30th 2013, 7:30 pm

Well everything went smooth torque them babys 135 with 30wt thanks for the help guys.
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 7:46 pm

What's your head gasket?

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Re: alum p-51 heads

Post  bigjohn2007 on March 30th 2013, 7:59 pm

cometic
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 8:16 pm

Cool

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Re: alum p-51 heads

Post  richter69 on March 30th 2013, 8:27 pm

I did the 140/135 on mine, oil on the threads... moly on the washer face, cometics as well..... so far so good.
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 8:53 pm

richter69 wrote:I did the 140/135 on mine, oil on the threads... moly on the washer face, cometics as well..... so far so good.

If a guy was gonna get down to the hair spliting deal....a voodoo mix of that gray stuff & oil for the underhead of a bolt or washer face for stud nuts...no moly on the threads for the head and main fastners....2nd choise.

#1] Oil on the threads + that CMD extreme pressure lube # 3.... that yellow & green tube that Manley sells as part # 40177 on the underhead. You guys that have assemblied many engines will know what I mean....when you pull on the tq. wrench it's smooooth...no hitch, no jerk, just smooth.



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Re: alum p-51 heads

Post  richter69 on March 30th 2013, 9:00 pm

damn junk ass 6.0/6.4 headbolts....... JT6 grease on the face and 75-140 gear lube on the threads is the only thing to make um smooth......
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 9:11 pm

richter69 wrote:damn junk ass 6.0/6.4 headbolts....... JT6 grease on the face and 75-140 gear lube on the threads is the only thing to make um smooth......

JT6 ? Is anything like TA31? Smile

So, you know of which i speak. If a guy was useing 10-w30 oil on a performace tq. job...he'd not only feel but hear what a poor job was being done....more so if the fastners were new.


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Re: alum p-51 heads

Post  bigjohn2007 on March 30th 2013, 9:26 pm

Don't know if it was a rookie mistake but i tried to put the head on with a few studs to guide the head and the dowel gave me a time so after pulling the head a few time i took them out and then put the head on the dowels and then screw the studs in. Looks as i would have known the dowels was not just for looks lol.


Last edited by bigjohn2007 on March 30th 2013, 9:51 pm; edited 1 time in total
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Re: alum p-51 heads

Post  John Myrick on March 30th 2013, 9:33 pm

Speaking of TA31....I need to get some more
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Re: alum p-51 heads

Post  Lem Evans on March 30th 2013, 9:44 pm

John Myrick wrote:Speaking of TA31....I need to get some more

I sold the last 6 tubes today....how many of the 6 that'll be here tues. do you want?

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Re: alum p-51 heads

Post  512Fairlane on March 30th 2013, 10:42 pm

Lem Evans wrote:
richter69 wrote:I did the 140/135 on mine, oil on the threads... moly on the washer face, cometics as well..... so far so good.

If a guy was gonna get down to the hair spliting deal....a voodoo mix of that gray stuff & oil for the underhead of a bolt or washer face for stud nuts...no moly on the threads for the head and main fastners....2nd choise.

#1] Oil on the threads + that CMD extreme pressure lube # 3.... that yellow & green tube that Manley sells as part # 40177 on the underhead. You guys that have assemblied many engines will know what I mean....when you pull on the tq. wrench it's smooooth...no hitch, no jerk, just smooth.


The CRC stuff I was referring to was also called pressure lube. It was a moly graphite mix. I used a little with the 30 wt oil on my rod bolts and main studs. It was nice and smooth just like you say. Seemed very similar to the ARP stuff. I just didn't get around to buying any of that. I haven't put the heads on yet but I might mix in a little. It seems so much smoother than just oil.
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Re: alum p-51 heads

Post  John Myrick on March 31st 2013, 8:24 am

Lem Evans wrote:
John Myrick wrote:Speaking of TA31....I need to get some more

I sold the last 6 tubes today....how many of the 6 that'll be here tues. do you want?

2 please
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