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Bolt-on Tech: 4G63 intake, exhaust, intake manifold, ignition, fuel system, cooling, etc.

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Old 09-16-2011, 07:16 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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ARP Headstuds??? Should I invest?


I just installed T28 Turbo with 750cc injectors planning on running around 19PSI? I heard the stock bolts are perfectly fine at 19 or 20 PSI, Just making sure and if you guys think I need to install them doesn anyone have a link to VFAQ's installing of them cause I cant seem to find it thanks!!

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Old 09-16-2011, 07:21 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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I would most definitely use ARP headstuds. There isn't a good VFAQ but check out these two threads as they have a lot of good info:

ARP Head Stud Install
Head Stud install help


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Old 09-16-2011, 07:25 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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Wow, he did it without the head off too defintly getting them, do you have any reccomendations of where or what ones I should get for like 19PSI?? I'm gonna try and do it just like that 1st link. Thanks though quick response, I want to order these now

I love STM. so would this be okay to get http://www.streettunedmotorsports.co...63_evo_dsm.htm
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Old 09-16-2011, 07:33 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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If you have a 6bolt and don't need to pull the head, don't.

If that's the stock 7bolt, ARPs are better than stock.


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Old 09-16-2011, 07:38 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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Quote:
Originally Posted by amballer82822 View Post
Wow, he did it without the head off too defintly getting them, do you have any reccomendations of where or what ones I should get for like 19PSI?? I'm gonna try and do it just like that 1st link. Thanks though quick response, I want to order these now
Just the standard 7-bolt ARP headstuds. I believe the part number is ARP 207-4203. ARP 7 bolt DSM Head Stud Kit : JNZ Tuning, ARP 207-4203 ARP Head Studs They also make an undercut head stud but from what I have read the standard set works best for our application.

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I just talked to one of the tech guys today at ARP and he recommended just sticking with the non undercut studs. Reason being is that he said the undercut studs were initially made for the Ford, Chevy, etc... all aluminum block and heads. They are needed for keeping the head gaskets sealed during expansion and contraction. He said the undercut studs will work but they will not be as strong as the regular ones for my application. He also recommended not to torque the studs no more than 75 ft pds. with the supplied moly lube. I told him that I was planning on boosting up to 32 psi. He said if I was just boosting no more than 25psi than the undercut studs would be the way to go. Well anyways, I thought I let you guys know what I found out.

Gil
Which ARP head studs to buy?

*EDIT - The link you posted from STM is good, just make sure you specify the DSM 7-bolt head studs.


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Old 09-16-2011, 10:38 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Thanks guys these head studs + STMS Afpr = Completed Big T28 Turbo setup = 320HP Dyno (I Hope )
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Old 09-16-2011, 10:57 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Upgraded head studs on 2g = good. I would seriously do them, especially if you like to run alot of timing like I do.
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Old 02-15-2012, 08:02 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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Still looking into these. Im gna run about 19-20 psi on my 99 stock 7 bolt. Wondering if it will be a issue or if it can wait till i build up some more cash? If it cant I will tune at a lower boost level.

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Old 02-15-2012, 08:15 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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PSI is irrelevant without mention the turbo. You said "stock 7 bolt"...T25? If so, stock studs will be fine, and you should lower the boost as it's just blowing hot air at that level.


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Old 02-15-2012, 08:18 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Quote:
Originally Posted by LandoAWD View Post
stock bolts will be fine
Fixed


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Old 02-15-2012, 08:19 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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Quote:
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Fixed
Doh. Don't neg rep me!


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Old 02-15-2012, 08:25 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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Well i figured since since the original thread was for a T28,I would just use this one instead of making a new one. So yes its a Big T28.

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Old 02-15-2012, 08:29 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #13 (permalink)
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In that case, the question is already answered in this thread...


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Old 02-15-2012, 08:34 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #14 (permalink)
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Would the stock one even hang in there for lil while? What would would be the max boost you would run on stock bolts.

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Old 02-15-2012, 08:38 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #15 (permalink)
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i would highly recommend changing over to arp head studs.
my first dsm was a 93 tsi 7 bolt with a stock 14b, and i stretched the stock head studs while driving on the highway, lifted the head slightly apart from the block, and blew all the oil and coolant out into the engine bay before the motor seized up.
chances are it was because i was running 18-19 psi on the stock sidemount and injectors (was my first dsm 10 years ago when i was 17 before i had any experience), but my point is it can happen, and its better to be safe then sorry when talking abut a low cost upgrade like arp studs.
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Old 02-15-2012, 08:42 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #16 (permalink)
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I contacted Road Race engineering and they told me something completely opposite of whats being said on here.

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Old 02-15-2012, 08:44 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #17 (permalink)
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And.... what did they say?
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Old 02-15-2012, 08:53 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #18 (permalink)
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Not Needed. Just getting some feedback on here. General Consensus Kinda thing.

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Old 02-15-2012, 09:13 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #19 (permalink)
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Quote:
Originally Posted by re-rx7 View Post
I contacted Road Race engineering and they told me something completely opposite of whats being said on here.
Quote:
Originally Posted by re-rx7 View Post
Not Needed. Just getting some feedback on here. General Consensus Kinda thing.
I am also curious to hear what an experience DSM vendor and support has to say about ARP headstuds, especially if it contradicts what we have been saying. I would argue it is "needed", thats how you learn, sharing ideas and debating.


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Old 02-15-2012, 09:17 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #20 (permalink)
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I think he means that RRE said that the studs aren't needed for those power levels. For $50 for a set of used studs, I would buy them rather than risking replacing a HG or worse.
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