How much boost on stock gasket.

[mhopemk3]

How much boost will a stock gasket hold?? Using ARP studs and torqed to 75lbs could I hold 16psi?

Plan to install stock HG with Permatex Copper or Brake quiet. Will this work ok..:1zhelp:

 

[Boss302]

people have and are doing this its all in the prep

 

[Michael90t]

its all in the tuning....... stock headgasket can hold plenty of boost as long as your not detonating... all a MHG really does is give you more headway for the occasional hiccup well to an extent anyways....Not saying a stock HG is as good as a metal one but for mildly modded and well tuned they are fine I ran 16+psi for a LONG time with stock headbolts and HG never had a problem but then again YMMV...

Michael M

 

[Nick M]

Something has to give. Do you want to lose the headgasket at 500 hp, or the shortblock?

 

[IJ.]

:withstupi Head gasket is a burst panel for the motor!
I'd rather lose a gasket then do serious mechanical damage.
(not calling ya stupid Nick but they don't have an "I'm with Nick smilie")

 

[Nick M]

I know you aren't.

 

[Jason T]

Using ARP studs and torqed to 75lbs could I hold 16psi?

Yes block being flat is the key to success :bigthumb:

Head gasket is a burst panel for the motor!
I'd rather lose a gasket then do serious mechanical damage.

What happens when fuel presure regulator fails :runaway::3d_frown:

Better a gasket than trying to bondo a hole in a block :naughty:

 

[aye mate]

Grimjack ran 20psi on a 57trim for a while before his blew. As long as you have plenty of fuel and its torqued down nice and tight. I have mine at 75ft.lbs and its held at 12-14psi on a stock CT-26 for about 22k miles.

 

[mhopemk3]

Cool. I will make sure the prep work is good. Will the permatex copper spray work as good as the brake quiet.. I have read alot about the brake quiet lately..

 

[figgie]

ok

here is a clue

if you are pushing a tired engine. DOn't bother cranking the boost as the next thing we will see is another, 7m with another POS BHG %#@&$ post

 

[mhopemk3]

ok

here is a clue

if you are pushing a tired engine. DOn't bother cranking the boost as the next thing we will see is another, 7m with another POS BHG %#@&$ post

 

[johnathan1]

I used an OEM HG w/Permatex Brake Quiet and ARP studs torqued to 80 ft/lbs...has been fine so far for about 6 months and 2k miles... (crosses fingers and knocks on wood)

 

[Joel W.]

I have 46k miles on an OEM gasket installed on a motor with 164k miles on it now, but I have not gone over 13psi on purpose.. Usually I run at 10psi.

 

[GrimJack]

Grimjack ran 20psi on a 57trim for a while before his blew. As long as you have plenty of fuel and its torqued down nice and tight. I have mine at 75ft.lbs and its held at 12-14psi on a stock CT-26 for about 22k miles.

Close - it was a stock turbo, and I think the 20psi is what killed it, to be honest. I ran 16psi for nearly a year without any problems as well.

As always, YMMV, be careful and get it tuned right before you go this route.

 

[mhopemk3]

Close - it was a stock turbo, and I think the 20psi is what killed it, to be honest. I ran 16psi for nearly a year without any problems as well.

As always, YMMV, be careful and get it tuned right before you go this route.

Ok.. so when I get it together this it what I will have completed. Stock HG @ 80lbs (arp studs). Walbro, 550's, afpr. Maft Pro with IAT, Map, boost etc.. Wideband, Hard Pipes, Custom exhaust(no Cat). Apexi Intake.. When I tune I will start with low boost(10psi) and then work my way up matbe to 15psi.. I really only need to keep this thing together for about 18 months and then I will beef up the bottom end..:biglaugh:

 

[figgie]

Ok.. so when I get it together this it what I will have completed. Stock HG @ 80lbs (arp studs). Walbro, 550's, afpr. Maft Pro with IAT, Map, boost etc.. Wideband, Hard Pipes, Custom exhaust(no Cat). Apexi Intake.. When I tune I will start with low boost(10psi) and then work my way up matbe to 15psi.. I really only need to keep this thing together for about 18 months and then I will beef up the bottom end..:biglaugh:

for only 18 months?

it takes one second to pop a motor. If it is your only car I def would NOT be fiddling with it.

 

[Wills7MGTE]

I run 10 PSI on a stock rebuilt JDM 7M-GTE until I can afford a MHG, studs and fuel upgrade, it does ok and I only feed it 93 octance, hasn't detonated on me ever so Hopefully it hoilds up till I can pull the head and do it right, also wanna port polish and new valves and springs too.

 

[Nick M]

One of the original, or first, NA-T's was running about 500 rwhp when he blew apart the ring lands on the pistons, while the OEM style HG stayed in place.