Whats the difference with Arps ?

Jaguar_5

It's ALIVE!
Feb 7, 2006
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noah89t;1022886 said:
not sure about arp, but you can do like many other people here and get some new bolts with lock washers and loctite. i used stainless bolts. just don't over tighten them, you can crack a valve cover. trust me.

Screw the valve covers, you could strip the threads out from the head! :aigo:
 

johnbot123

supra noob
Jun 22, 2007
43
0
0
queens, ny
does anyone know the size of the bolts of the valve covers? ARP does make valve cover bolts but they r universal. if i find out the size of the stock ones i think i can persuade jack at suprasport.com and arron at driftmotion to carry them for us. that means no more guess work. ARP for everybody lol.:naughty:
 
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fonz87

89 Turbo!!!!
Nov 17, 2007
642
0
16
37
Streamwood, IL
i know arp site has stuff about this but alot of that is not english to me. I just wanted to know what many of you guys used or have experienced with cuz that way i know right choice to make.
So i guess ill just go with the studs and 1.2 Mm MHG
 

fonz87

89 Turbo!!!!
Nov 17, 2007
642
0
16
37
Streamwood, IL
also anyone here know how to take out the turbo. I took the 3 easy bolts of the elbow but can't get the other one out.
I searched and all i can find is useless stuff. Anyone have step by step guide to taking the turbo off ?
 

WhtMa71

D0 W3RK
Apr 24, 2007
1,813
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Macon, GA
uhhhh..with a wrench? Best would be a ratcheting wrench..
Oh and i had to get the bottom one nearest to the engine from under the car with a regular box end.
-connections:
4-turbo elbow nuts
4-turbo to manifold nuts
2-oil return to block nuts
1-banjo bolt to block (or take the 2 nuts off holding the return and feed to the turbo)
2-water lines clamps
-Eric
 

noah89t

get naked & boost a supra
Jaguar_5;1023120 said:
Screw the valve covers, you could strip the threads out from the head! :aigo:

not if you're careful. don't cross thread them or over tighten them. if for some strange reason you are stripping the head where you tighten the valve covers, then you have options to use a helicoil or drill, tap, and go bigger. but it should never come to this. you do have to be careful with the aluminum in the head, it seems easy to mess up. you will see IJ talk about the annealing of the head.
 

noah89t

get naked & boost a supra
i guess i don't fully understand. but 80ft. lbs. is 80ft. lbs. there is no change in the number. i guess it would depend on what it is being applied to to determine if it will hold. i wouldn't trust hard plastic bolts over stainless, and i wouldn't trust stainless over grade 8. Overall, it doesn't matter too much to me since i have been using ARP bolts in my head for a few years now and i don't plan on replacing them for studs.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
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Valley of the Sun
suprarx7nut;1023905 said:
Just for the record...

80 ft/lbs IS NOT 80 ft/lbs. ;)

I don't think you understand how people arrive at the conclusion that studs are a more accurate representation of clamping force...


LOL...so to speak ;)

For the measurement of "twist" as read from the wrench, it is...80 ft/lbs will read for bolts or studs.

For the measurement of pressure applied between the head and block decks (with the HG in between), it depends on the hardware used and the friction coefficient for that hardware. This is not expressed in ft/lbs, but in lbs per sq/in...this is what's meant by a more "consistent clamping force" for studs.
 

adampecush

Regular Supramaniac
May 11, 2006
2,118
3
38
Edmonton
noah89t;1023915 said:
i guess i don't fully understand. but 80ft. lbs. is 80ft. lbs. there is no change in the number. i guess it would depend on what it is being applied to to determine if it will hold. i wouldn't trust hard plastic bolts over stainless, and i wouldn't trust stainless over grade 8. Overall, it doesn't matter too much to me since i have been using ARP bolts in my head for a few years now and i don't plan on replacing them for studs.

80 lb-ft is simply a measure of the force needed to turn the bolt. It does not directly translate to clamping force. Friction between threads and the friction between the bolt head and the clamping surface have a significant influence on the actual clamping force of a bolt at a given torque. This is why the required torque is less when using a high-grade lubricant versus oil or dry threads during assembly.

edit...i see that jdub beat me by a whole hour. lol.
 

Jaguar_5

It's ALIVE!
Feb 7, 2006
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And it is also why you have to use the torque wrench properly, and let it click at the end of the stroke, not the beginning