let make a car specific thread(dsmers)
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From: Roanoke
Re: let make a car specific thread(dsmers)
Re-torque your head studs boys, double check it. I went wot yesterday, hit second and the car was missfiring like crazy! Scared the shit out of me as I immediately thought the worst happened like possible bottom end failure, or rod damage. I limped it home, and compression tested the motor. It was 155 across but #1 cylinder wouldn't hold ANY compression. I figured I popped the head gasket as it is an oem composite, with arp head studs, and I've been running 27-28 psi so it could happen. The car is now all torn down now, pulled the head tonight and low and behold, several head studs around that #1 cylinder are wobbly as can be. They backed out some how and it only took 3 turns to unthread it, they were barely in there.
it is weird that one would back out that much though-were they properly torqued to begin with?
chris
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From: Fredericksburg
Re: let make a car specific thread(dsmers)
Re-torque your head studs boys, double check it. I went wot yesterday, hit second and the car was missfiring like crazy! Scared the shit out of me as I immediately thought the worst happened like possible bottom end failure, or rod damage. I limped it home, and compression tested the motor. It was 155 across but #1 cylinder wouldn't hold ANY compression. I figured I popped the head gasket as it is an oem composite, with arp head studs, and I've been running 27-28 psi so it could happen. The car is now all torn down now, pulled the head tonight and low and behold, several head studs around that #1 cylinder are wobbly as can be. They backed out some how and it only took 3 turns to unthread it, they were barely in there.
You have to crank em in with the allen key several times over before putting the head on and torquing them down. crank them and let them settle for 10 minutes then go back over. they'll walk out due to the displaced air/oil in the hole that gets pushed out by the stud when you thread it in. gotta keept doing it to squeeze it out or the pressure will push them up.
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From: J'Ville FL.
Re: let make a car specific thread(dsmers)
To some of the above posts:
I had an ACT in my Evo and hated every minute of it. Just a lil tidbit.
Anywayz: I wanna get my car tuned soon and so far my mods are just a boost controller and full TBE. Do I really need a warlboro 255 fuel pump before I get it tuned? Or can I just toss it on the dyno as it stands?
I had an ACT in my Evo and hated every minute of it. Just a lil tidbit.
Anywayz: I wanna get my car tuned soon and so far my mods are just a boost controller and full TBE. Do I really need a warlboro 255 fuel pump before I get it tuned? Or can I just toss it on the dyno as it stands?
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From: Fredericksburg
Re: let make a car specific thread(dsmers)
To some of the above posts:
I had an ACT in my Evo and hated every minute of it. Just a lil tidbit.
Anywayz: I wanna get my car tuned soon and so far my mods are just a boost controller and full TBE. Do I really need a warlboro 255 fuel pump before I get it tuned? Or can I just toss it on the dyno as it stands?
I had an ACT in my Evo and hated every minute of it. Just a lil tidbit.
Anywayz: I wanna get my car tuned soon and so far my mods are just a boost controller and full TBE. Do I really need a warlboro 255 fuel pump before I get it tuned? Or can I just toss it on the dyno as it stands?
don't need 255. stock pump is good for nearly 400 on them
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From: Roanoke, VA
Re: let make a car specific thread(dsmers)
how many times you had em out and back in?
You have to crank em in with the allen key several times over before putting the head on and torquing them down. crank them and let them settle for 10 minutes then go back over. they'll walk out due to the displaced air/oil in the hole that gets pushed out by the stud when you thread it in. gotta keept doing it to squeeze it out or the pressure will push them up.
You have to crank em in with the allen key several times over before putting the head on and torquing them down. crank them and let them settle for 10 minutes then go back over. they'll walk out due to the displaced air/oil in the hole that gets pushed out by the stud when you thread it in. gotta keept doing it to squeeze it out or the pressure will push them up.
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From: Roanoke, VA
Re: let make a car specific thread(dsmers)
That's what's funny, these studs were brand new, installed once. Yes I cranked down on the studs, and torqued them into the block with an allen, and listened for the gurgling out of them as the air popped out. I mean they backed out bad, like 3 threads were holding the stud in, enough to make that cyl lose complete compression.
your supposed to go back over them after a few heat cycles if they are brand new. Glad it was nothing major though!
Just ironic about the thread of your car doing so well...and then a problem, lol.
BTW Assasin, the stock evo8 fuel pump is pretty weak, the pressure bypass on it I want to say is somewhere in the high 60 low 70 psi range. For only 90 bux it is way worth it to put one in. But, since you are on such very minimal mods, the car will be fine wiht no fuel pump. Why did you dislike the ACT by the way? Just for my information.
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From: Fredericksburg
Re: let make a car specific thread(dsmers)
That's what's funny, these studs were brand new, installed once. Yes I cranked down on the studs, and torqued them into the block with an allen, and listened for the gurgling out of them as the air popped out. I mean they backed out bad, like 3 threads were holding the stud in, enough to make that cyl lose complete compression.
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From: Roanoke, VA
Re: let make a car specific thread(dsmers)
From now on I will be double checking the torque on the studs.
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From: Fredericksburg
Re: let make a car specific thread(dsmers)
What kind of management are you running? I had a MAFT go bad on me that caused a detonation that lifted the head and the same thing happened to me. Actually happened twice before I figured out what was causing it (MAFT flaking and delivering brief false signal, causing timing/lean spike). Went to a AEM EMS and been fine since.
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From: Roanoke, VA
Re: let make a car specific thread(dsmers)
What kind of management are you running? I had a MAFT go bad on me that caused a detonation that lifted the head and the same thing happened to me. Actually happened twice before I figured out what was causing it (MAFT flaking and delivering brief false signal, causing timing/lean spike). Went to a AEM EMS and been fine since.
I just tried a 93/110 mix for fun, and it allowed 27-28psi with 23deg of timing with no knock issues, but recently I read that you can be dangerously lean on 110 and still no sign of knock through dsmlink. This is why I won't be trying that again without my wideband fixed.