how high can i go
- Thread starter 89turboguy
- Start date
jdub said:Over 14 psi, you are running a composite HG at it's limit...I'm not saying you can't do it, but running anything at max is going to cause a failure. It's just a matter of time.
Almost 30k miles since I put my ARPs and Toyota HG in and running fine.
aye mate said:
And that is outstanding :icon_bigg
Don't get me wrong...I love pushing the envelope. All I want the noobs to understand that that is what they are doing and milage may vary from 7M to 7M. It's the difference between dumb bet and knowing the odds and that's all.
One other consideration is how much you actually run the motor at higher boost levels on a stock HG. When you start pushing the envelope, it's how much time you hang it out there that makes a huge difference
Totally agree. Circumstances are the biggest key. A 20psi boost spike is totally different than running 20psi everytime the toilet paper runs out.jdub said:And that is outstanding :icon_bigg
Don't get me wrong...I love pushing the envelope. All I want the noobs to understand that that is what they are doing and milage may vary from 7M to 7M. It's the difference between dumb bet and knowing the odds and that's all.
One other consideration is how much you actually run the motor at higher boost levels on a stock HG. When you start pushing the envelope, it's how much time you hang it out there that makes a huge difference
i guess no where has read my post's wher ei tried to gwet away with a mhg and not doing the block aswell, i had the head done to 25ra, and "I" prepped the block, well
any thing above 5psi and im pushing boostin into my cooling system.. it's a drag, and worst thing is the car is still driveable so it's drives fine, but will push coolent out, and boil it.
reallt listen to these guys when they say do it once right, or do it sevral times wrong....
i should have pulled my motor, only would have costed me another month of down time, that i could have afforded since i had another car to drive.. i just wanted back in this beast. and now i regret it every time i have to pop the rad cap while the motor's boilin to add coolent to keep this sucker from warping the head by letter her cool down with no coolent.. it sucks to be burned i tell you!
any thing above 5psi and im pushing boostin into my cooling system.. it's a drag, and worst thing is the car is still driveable so it's drives fine, but will push coolent out, and boil it.
reallt listen to these guys when they say do it once right, or do it sevral times wrong....
i should have pulled my motor, only would have costed me another month of down time, that i could have afforded since i had another car to drive.. i just wanted back in this beast. and now i regret it every time i have to pop the rad cap while the motor's boilin to add coolent to keep this sucker from warping the head by letter her cool down with no coolent.. it sucks to be burned i tell you!
countdown to "the 7M is a piece of shit" thread
better put 2 bullets in that gun.JustAnotherVictim said:
Assuming that you haven't alread bought the new turbo, I would use that money to prep the block and head (possibly get new or have the stocker piston and rods freshened up w/new bearings and all). I would then put a good MHG on (HKS stopper) w/ARP STUDS.
The turbo you want to use on your tired engine will kill it in short order. The way the stock engine and headgasket is set up, it will only be able to handle 14 psi max. The stock turbo can lay that down no problem. If you don't have many mods at this point in time you would probably hit fuel cut around this point anyways.
My suggestion would be to hold off on that bolt-on and prepare your engine with the mods it will need to be able to handle that turbo.
Edit: After looking back over your mods I would still consider checking the conditions of the pistons and rods. 50K is still enough to do some damage to the engine depending on how hard of a life that 50K has been, especially running 14 psi on you stock blown turbo.
The turbo you want to use on your tired engine will kill it in short order. The way the stock engine and headgasket is set up, it will only be able to handle 14 psi max. The stock turbo can lay that down no problem. If you don't have many mods at this point in time you would probably hit fuel cut around this point anyways.
My suggestion would be to hold off on that bolt-on and prepare your engine with the mods it will need to be able to handle that turbo.
Edit: After looking back over your mods I would still consider checking the conditions of the pistons and rods. 50K is still enough to do some damage to the engine depending on how hard of a life that 50K has been, especially running 14 psi on you stock blown turbo.
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