22 Psi 50trim:stock gasket Head Bolts?

[diamondstargsx]

i wanted to get some feedback from this and veiws.22 psi on a scm 50 trim with the stock head gasket and stock head bolts.i have arp"s coming but im on hold for now and whats the opinions on holding up?i dont run the car in boost all the time just when i want to or have to just to let you know.

landry

tmo log:
22 psi
peak timing:17 deg
peak knock:2
idc:84% idc

 

[psychlow]

I'd be a little weary of any knock with that much cylinder pressure, personally.

As far as the head gasket, I'd just run it with the knowledge that it might not hold. If it doesn't, no big deal - your other gasket is on the way. Just make sure you don't hydrolock the engine.

 

[Steve93Talon]

I ran my 7 bolt with stock head gasket and bolts and 90k on it at 24psi on pump gas with my Green just fine. In fact, I just pulled the head off at 112k and the stock gasket was still perfect.

 

[diamondstargsx]

i drive the car normal to and from work but sometimes i hit it
so ill take it easy.

landry

 

[IllEagl]

I would install the arp's with the stock gasket, you'll be fine.

 

[bigjdog84]

The 6 bolt cap bolts are very strong actually. If I could do it again I wouldn't waste my time with ARP headstuds, I've seen a few stretch. Not to say they are bad, but you may want to push the 1g's to the limit, as they are very thick, opposed to the 7 bolt headbolts.
Your tune will be more detrimental to blowing a HG then anything.
Later/joe

 

[diamondstargsx]

i feel i have a pretty good tune so far,opinions?

 

[Turbo Talon DL]

I've learned from reading on here and from people blowing engines that detonation and all the bad stuff engines dont like are what stretches head bolts/studs and blows head gaskets, along with melting pistons. Just remember not to exceed stock torque specs on the bolts/studs. You can distort the cyl walls. I've read about people on here using 80lb/ft+ on ARPs. like its gonna save you from blowing your engine and head gasket from a bad tune or something

 

[bigjdog84]

at what RPM's are you getting that knock and timing advance? Is timing dropping to 17 as soon as that knock hits? I'd try and tune it out if your timing is getting retarded. Try and get it around 20 deg and it should pull much harder.

 

[diamondstargsx]

at 5281 to 6125 rpm its 20 deg timing and from 6200 to 6563 it drops to 17 deg timing.its weird at 4400 to 5844 knock is 5 and then goes to 3 at 5844 then to 2 counts peak at 6563.

 

[nanokpsi]

at 5281 to 6125 rpm its 20 deg timing and from 6200 to 6563 it drops to 17 deg timing.its weird at 4400 to 5844 knock is 5 and then goes to 3 at 5844 then to 2 counts peak at 6563.

My stock 2g gasket and studs see 28-30 when i feel like popping for race gas. This is on my 114k motor. No coolant pushed on the dyno either.

One a side note, I don't see how people run big boost with an afc.....