aliveagain
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posted December 28, 2005 02:34 PM
head bolts
I'm getting ready to torque the head bolts .My question is, does anyone add 10% to the torque spec when using NO2 and big bore?I just want to make sure the intercylinder seal holds.
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CrotchRocket
Moderator
Bracket Racing with Betsy
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posted December 28, 2005 06:27 PM
How many times did you have the head off and did you change the head studs???
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Jason Miller StreetBike Seminars
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aliveagain
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posted December 28, 2005 07:37 PM
I probably had the head off at least 3 other times.I am using the stock bolts.SBM said he usually goes over 10% on his kit.Its only a 1427with a 40 dry shot.Didn't know if anybody else varied from spec.I guess a good follow up question would be,how many times can you reuse the stock head bolts?
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I wondered why the baseball kept getting bigger. Then it hit me.
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CrotchRocket
Moderator
Bracket Racing with Betsy
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posted December 29, 2005 12:27 AM
I would put new head bolts in !!!
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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aliveagain
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posted December 29, 2005 03:38 AM
CR,have you ever had a problem with stretch?
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I wondered why the baseball kept getting bigger. Then it hit me.
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canadamaxxer
Pro
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posted December 29, 2005 06:23 AM
investing in a set of head studs would be well worth the cash....
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aliveagain
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posted December 29, 2005 07:26 AM
What are my options to who sells them aside from A.P.E.?
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I wondered why the baseball kept getting bigger. Then it hit me.
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VincentHill
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posted December 29, 2005 07:40 AM
 Edited By: VincentHill on 29 Dec 2005 11:14
The #1 problem with using "Bolts as opposed to studs is Thread wear in the case. Every time you torque the threads they are worn and stressed more. WIth Studs, you do this process once and they have Red Loctite to help and only the "Steel" Threads of the Studs receive wear plus with antiseize they will handle a lot of ons and offs before you replace them. DO not do this to your engine and get the APE Studs. If I had my way, I would get studs for the cases also
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TRNorBRN6001
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Posts: 2021
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posted December 29, 2005 09:28 AM
Does anybody else make studs for the 12, I am kind of shying away from
APE's. I do hear that the studs offer more thread contact area, but have
also heard that some tend to stretch a little easier than others. I am sure no
one wants a head to lift on them. Does ARP make any for 12s, I know they
just released some for Busas.
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TFA 200MPH CLUB MEMBER!
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aliveagain
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posted December 29, 2005 12:15 PM
I looked on APE's website and couldn't find any cylinder studs.
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zxlnt
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Kawpuke Extraordinare
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posted December 29, 2005 03:30 PM
They do make them, or at least they did, I have a set in my engine...
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VincentHill
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posted December 29, 2005 05:06 PM
quote:
They do make them, or at least they did, I have a set in my engine...
I have a set in my engine also but did not "SEE" them on their web site. Call or write to them OK?
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osti33
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posted December 29, 2005 05:46 PM
Edited By: osti33 on 29 Dec 2005 17:46
I have a set of APE studs also. They still make them. Give APE a call...
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aliveagain
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posted December 29, 2005 08:49 PM
$120 at Schnitz,I'll call APE
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ninja12
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posted December 31, 2005 11:01 AM
quote:
$120 at Schnitz,I'll call APE
well, did you call?
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aliveagain
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posted December 31, 2005 04:29 PM
sorry,not yet,I've been cutting up the firewood before this snowstorm hits.Studs haven't been a real priority this week.
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I wondered why the baseball kept getting bigger. Then it hit me.
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junior s
Pro
?
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posted December 31, 2005 06:53 PM
Now you can prioritize these things ? Make the call -you know you'll feel better after .....
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Get up off your ass and ride !!
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aliveagain
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posted January 01, 2006 09:45 AM
I 'll make the call on Monday as I have the day off.I might work like a troll,but I decided to go with the stock bolts for now.I just spent $750 on the head,$700 for 10 ply tires for the truck,$5000 cc(we pay it off every month)Christmas presents and are trying to redo the kitchen.Prioritize ,you bet!Yes, it would be the right way to do the motor ideally,but if I ask whether I need to,then not using them isn't wrong either.Next time when its apart that'll be on the agenda.I just don't feel comfortable where the bank account is.
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I wondered why the baseball kept getting bigger. Then it hit me.
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aliveagain
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posted January 02, 2006 10:53 AM
I left an email as the phone said they will be closed until Jan3,2006
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I wondered why the baseball kept getting bigger. Then it hit me.
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TRNorBRN6001
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Posts: 2021
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posted January 02, 2006 12:30 PM
Anybody else make studs for the 12?
What is the torque for stock bolt and APE stud? Anybody go a little
over 5-10 ft/lbs?
What is standard install technique? Thread in all the way with thread lock
and then a 1/4 turn back out?
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aliveagain
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posted January 02, 2006 02:37 PM
If I remembered right,stock bolts are tightened to 43ftlbs.I went 10% over to 47ftlbs as recommended to me.
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I wondered why the baseball kept getting bigger. Then it hit me.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted January 03, 2006 06:49 AM
What do the APE ones torque to? Somewhere in the 60's?
I think APE might have changed or are in the process of changing
the material used on the head studs, similar to the way they just did
for the Busa head studs. As I believe thier original material tended to
stretch a little easy.
Anybody have any specs on stock headbolt stretch verses other head
studs/bolts? I think it is measured in pounds per square inch and
should range from 10,000-17,000 for begining yield even though
the tensile strength and breaking point is significantly higher (15-20x).
I am an idiot so if anybody could enlighten me.
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flite leader
Zone Head
Posts: 651
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posted January 03, 2006 10:47 AM
the +10% has been used by many a mechanic
& will work on a Stock... Street engine
you said your engine has been down 3-4 times
you were given damn good advice
replace all bolts & studs !!!!!!!!!!!!!!!!!!!!
pay now ...............or pay the piper after the grenade
each time you torque those bolts & studs down
They STRETCH
each time you run your engine to red line
They STRETCH
each time you Spray NOS
They STRETCH
read the torque page on the ARP site for your own edfication
to see comparatively how much wd40.... motor oil or wire wheeling
will change torque values dramatically
a rolled threaded bolt or stud simply WILL NOT
stretch as much as a OEM bolt or stud unless defective
or a totally inept set up
if you want peace of mind & a spared bank account.......replace them
Smart $$$$$$$$$$$$$$!!!!!!!!!!!
i for one would like to know why & how you are on your 4th rebuild
& no less why you Ask for..... & Recieve good advice
then totally disregard it ??????????????
its a free world & the only person invested in your actions
is you
good luck
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bend your mind.....
or break your ass...!!
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aliveagain
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posted January 03, 2006 12:12 PM
I called A.P.E. and they have the +2mm in stock for $129 They are the same grade as the stock bolts.Fl,the first was the sbm bb,second was a knocking noise,third was a vacuum line not connected by mechanic which makes it the third torque.Why shouldn't I ask for advice? I highly regard the advice given on this site and the members for their time and patience in guiding me with their experience on the questions I ask.It also makes for a good read.Please don't take it personal if I don't follow every suggestion,as its not meant out of disrespect,its just a choice I made.I am a recovering drug addict who at this stage just cannot remember anything.If I wait too much longer,I run the risk of forgeting how the bike goes together.I waited 2 1/2 yrs on my harley before I had to have someone else put it back together.I would love to rebuild it in a perfect enviroment with all the right parts.I can't.
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I wondered why the baseball kept getting bigger. Then it hit me.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted January 03, 2006 12:31 PM
Good luck, hope she slides together nicely.
Anybody got any ideas on better than stock
head studs/bolts keep us informed.
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TFA 200MPH CLUB MEMBER!
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