Are the evo 9 stock headstuds safe to 30 psi used with an fp red?
As posted many times before I have a red and have stock head studs with no issues. I run meth and 30psi daily. My tuner has stock studs and runs 30psi with a 35R. You will be ok. I would only put them in if the head if already lifted or with a built engine when its assembled.
I have a dollar for anyone who can prove they lifted a head with 30psi or under.
I have a dollar for anyone who can prove they lifted a head with 30psi or under.
Any way all was well. I have had no issues running the stock studs. That incident happened a while ago as well. I will upgrade when I have my engine built.
Stock headstuds on my IX have been awesome. 14,000 miles of FP red and 31-34psi daily, I never turn it down. Before that 47,000 miles of 30psi on stock IX turbo and E85. This car makes over 500hp on a dynojet. Runs 11.1 at 127mph bouncing off 8500 limiter in fourth.
Original headgasket and headbolts so far, now car has 66,000 miles on it. You only get that awesome factory fresh seal once, avoid 1x1 and basic ARPs not worth the money. L19s or stick with stock headstuds on the original headgasket. If it blows or you upgrade your head then go right to the L19s and never look back.
Original headgasket and headbolts so far, now car has 66,000 miles on it. You only get that awesome factory fresh seal once, avoid 1x1 and basic ARPs not worth the money. L19s or stick with stock headstuds on the original headgasket. If it blows or you upgrade your head then go right to the L19s and never look back.
550 (labor)+
100 (gasket)
110 (studs)
760 + tax....adds up pretty quick
that all being said, I made lots of power on stock headstuds. The people that need headstuds now are most likely the ones that had a craptastic tune on the car and rattled the pistons/lifted the head. That is far worse on a headgasket than doing the 1x1 method. However the proper way is to pull the head off, make sure its flat, reinstall.
850r 25-30psi stock heads studs = good to go..
If you want to change them thats good, but its not necessary.
I have seen people change to arp the wrong way 1x1 method and blow their headgasket..
Its all about the tune, its all about doing it right.
If you do 1x1 method and blow the headgasket, your going to tear the head down anyways,
so if you have a sucky tune and lots of detonation then you blow the headgasket at that time do the headstuds the right way.. Pull the head
If you want to change them thats good, but its not necessary.
I have seen people change to arp the wrong way 1x1 method and blow their headgasket..
Its all about the tune, its all about doing it right.
If you do 1x1 method and blow the headgasket, your going to tear the head down anyways,
so if you have a sucky tune and lots of detonation then you blow the headgasket at that time do the headstuds the right way.. Pull the head
Newbie
Joined: Jul 2010
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From: HAWAII
Thats why people called "supporting mods". It's not safe to run stock headstuds on Fp red at 30 psi. Arp headstuds stronger and can handle the power. At same time when you get the headstuds installed, install a new head gasket too . Do everything one time. Same time,labor and money.