Do I need L19 headstuds? [Archive] - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com

: Do I need L19 headstuds?


cupa-joe
11-24-2011, 06:35 PM
Well I plan on buying my L19's tonight from extremepsi when they go on sale at midnight so I went and did some more research. After reading I found out they say you really only need them after 35+ psi and honestly I doubt I'll ever run over 30psi since this is my DD. Will standard ARP's be good enough? I know the standards are said to be not much stronger if any then the stock head studs but from what I read I'm going to need studs to run 24+ psi.



If you could enlighten me some I'd appreciate it.

Spoolin69
11-24-2011, 09:24 PM
L19's are the way to go.

99gst_racer
11-24-2011, 09:27 PM
There is no boost limit for head studs. It's all a matter of cylinder pressure, which can determined from how much airflow the engine is ingesting. Which turbo are you running?

cupa-joe
11-24-2011, 09:30 PM
Hx35, so about 52 lbs/min.

99gst_racer
11-24-2011, 09:39 PM
Personally, I'd go with regular ARP's torqued to 85 ft/lbs with moly lube. They're plenty strong enough for 52 lbs/min, and they won't distort your cylinder walls as badly as L19s.

cupa-joe
11-24-2011, 09:53 PM
Anyone else use the standard ARP studs with an Hx35? Would like some more input on this before I make the purchase. Its either L19 or standard ARP and Forge bov that I need.

99gst_racer
11-24-2011, 10:11 PM
Many people (myself included) have flowed 50 lbs/min on factory head bolts. Without a doubt, standard ARPs are plenty.

Bradikus7
11-24-2011, 10:41 PM
Anyone else use the standard ARP studs with an Hx35? Would like some more input on this before I make the purchase. Its either L19 or standard ARP and Forge bov that I need.

I'm not trying to speak for anyone but Kman would tell you that standard ARP's are not even as good as factory 7bolt head bolts. I'm going with L19's tonight based off of much research.

cupa-joe
11-24-2011, 11:28 PM
Good to know, guess Its better to be safe then sorry. I might as well just do it once and never have to worry about it.

Bradikus7
11-25-2011, 12:24 AM
Good to know, guess Its better to be safe then sorry. I might as well just do it once and never have to worry about it.

I agree, you will never be sitting there wondering if you made the right choice because you have one of the best headstuds available. I hope you got in on some deals on extremepsi. The L19's were like $40 cheaper than normal. I grabbed a whole bunch of stuff at the same time just to make it an even better deal for me. Gotta rationalize that whole $7.50 processing fee:P.

99gst_racer
11-25-2011, 10:13 AM
Kman would tell you that standard ARP's are not even as good as factory 7bolt head bolts.
Yeah, and without a shred of proof too. ;)

DSM4LIFE-AWD
11-25-2011, 10:18 AM
Yeah, and without a shred of proof too. ;)

+14523463 :tat:

cars4life13
01-30-2013, 10:23 PM
I know tons of friends that have mad 700whp on regular ARPS

boost2all4
02-28-2013, 09:39 AM
I say do it rite the first time. Go L19! You never know maybe later down the road you'll upgrade turbos.

K_Mans_TSI
02-28-2013, 03:21 PM
Yeah, and without a shred of proof too. ;)

I have a buddy that tested tensile strength of 7bolt vs standard ARPs a number of years ago and at that time it was more they were "as good, not better". That data has long since gone so unfortunately it's word of mouth at this point however there also is no real data stating otherwise so you can take it or leave it, none of which matters much to me.

Personal experience has told me after 2 sets on different setups across a couple different year periods that they weren't as good. I'm of the mindset that if the stock bolt studs do not perform well enough for my build then the only other option out there is L19's.

Sure lots of people have used standard ARPs with success, but lots of other people found they needed to step up to the 1/2in standard ARP because the 12mm (and 11mm) weren't cutting it "in the old days" so again, you're free to decide on your own.

I'm getting older, i'm a few years beyond arguments and internet arguments or provind why I'm right or wrong or why other people are right or wrong, I'm just putting out information I've collected when building my own vehicle from people in all automotive walks of life and made my decision based on that. ;)

- Cheers.

90BLACKAWDTSI
02-28-2013, 04:05 PM
There can be so much variation from 1 installer to the next. User error plays a big role in headstud install.

boost2all4
03-04-2013, 03:35 AM
I've never had a problem with standard arp's. No issues for 3 years now.

badass1g
07-10-2013, 03:33 PM
10.70@136 35psi and standard ARP's with stock HG here.