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cant find help on manifold relief cuts???

 
Old 08-01-2007, 12:32 AM
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Default cant find help on manifold relief cuts???

i hear everyone talking about the relief cuts where do i cut how far do i cut??? and what are the uprgraded studs and bolts everyone pushes to do before install read about it but cant see any direct info on how to do this
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Old 08-01-2007, 01:49 AM
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Old 08-01-2007, 01:51 AM
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The upgraded studs are for the mani-turbo bolts (and the turbo-DP bolts if you want to get fancy). IIRC they're 8x1.25 exhaust studs and the corresponding nut & lockwasher OR locknut.
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Old 08-01-2007, 05:05 PM
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what is the easiest way to make the cuts and what kind of saw works best????
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Old 08-01-2007, 05:21 PM
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A sawzall with a metal-cutting blade make the cuts pretty well, but for the corners I resorted to the hacksaw because the sawzall likes to jump out of the cut while you're making it.
I would go back and widen all the cuts to the width of the sawzall blade because I've been told of firsthand accounts where the cuts (made with just a hacksaw) were skinny enough that they fused together with heat.

Is the middle cut really only supposed to go halfwayish through in the link posted?
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Old 08-01-2007, 05:29 PM
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no, it's meant to go all the way through.

TBM - just use a sawzall. Get some earplugs too, it gets LOUD.
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Old 08-01-2007, 06:08 PM
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if it were me i'd just do in between 1 & 2 and 3 & 4 and call it a day....the rest is over the top.
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Old 08-02-2007, 12:29 AM
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also im dumb on the bolt sizes dont understand what 8x 1.25 means grade 8 im guess but what is the 1.25?
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Old 08-02-2007, 12:34 AM
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just take the stud to the hardware store, and find matching studs and nuts.
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Old 08-02-2007, 12:50 AM
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huh so if i am taking the stud to the hardware store than what am i gettting thats diff? im so confused
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Old 08-02-2007, 12:51 AM
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sorry to be so stupid just trying to understand
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Old 08-02-2007, 12:58 AM
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Wait. Im Sorry. I thouhgt you were replacing Studs and nuts. My Bad
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Old 08-02-2007, 01:01 AM
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no i have the greddy kit how it comes but everyone says to replace with upgraded **** the guy a few posts ago said the size but doesnt tell me anything really??? still confused i got the relief cuts figured out
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Old 08-02-2007, 01:10 AM
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If you are replacing the studs and nuts, just take one out and take it to the Hardware store with you, and get the same size stud, nut, and lockwasher, Or Stud and locknut

IIRC they're 8x1.25 exhaust studs and the corresponding nut & lockwasher OR locknut.
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Old 08-02-2007, 01:48 AM
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You go to the parts store and look for the exhaust studs that say "8x1.25" on the baggie. They're a little over an inch long.. and they'll probably be black...

If you can't figure that out, go to the guy behind the counter and ask him where the "grade eight, size eight by one-twenty-five millimeter exhaust studs" are.
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Old 08-02-2007, 01:51 AM
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Thats The Kind Of Answer Im Looking For Simple And To The Point Thanks!
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Old 08-02-2007, 08:47 AM
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M8 is the size of the threading.

You'd want (4) M10 studs for the manifold to turbo flange, IIRC.

1.25" is the tread pitch. So look for M10x1.25 Grade 8 Automotive Studs.

You'll want M8 for the turbo to downpipe.

Make sure they are long enough so you can fit your new nuts on them, but not too long that the stick out and get in the way of mounting things.

like this:


Dont take my word for the sizing, bring the manifold and turbo with you and make sure. ACE hardware sells everything you need.
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Old 08-02-2007, 04:24 PM
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Brain - the greddy uses the same diameter bolts/studs for mani-turbo and turbo-DP.
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Old 08-02-2007, 05:40 PM
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Originally Posted by kotomile View Post
"grade eight, size eight by one-twenty-five millimeter exhaust studs"
Since they are Metric, they will probably be rated as "Class 10.9" rather than Grade 8.
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Old 08-02-2007, 11:45 PM
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went to ace hardware today no luck at all the ppl working there didnt help at all either couldnt find the sizes i need or the grade i wanted they only had class 8.8 or something like that this is frustrating lol!
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