oem headgasket vs. my car = 2-0
05-13-2006, 08:25 PM
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oem headgasket vs. my car = 2-0
replaced the headgasket with another stock one today and went back on the dyno to do some normal pulls with high boost.... i lost another headgasket and cracked a piston this time.
this was between 22-24psi both times we blew the head gasket, so anyone playing around those numbers needs to have an aftermarket gasket... and this was the finale of me helping the company do testing, i've broke enough stuff.
there are a few of guys on here that knows what's been going on with my car over the last little while, but for everyone else, those high boost levels were not achieved with the m62
this was between 22-24psi both times we blew the head gasket, so anyone playing around those numbers needs to have an aftermarket gasket... and this was the finale of me helping the company do testing, i've broke enough stuff.
there are a few of guys on here that knows what's been going on with my car over the last little while, but for everyone else, those high boost levels were not achieved with the m62
05-13-2006, 08:42 PM
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Originally Posted by AlphaJaguar5
Just answer me one question 90 or Twin?
the displacement of the blower was somewhere between 0.05L and 20.5L per revolution
---if you find a 20.5L blower please let me know cause i want a picture of it lol
05-13-2006, 09:00 PM
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alright, i guess i can narrow it down a little.
the answer to that is either yes or no
sorry man, i'm probably going to get in trouble for even talking about a blower swap in public. i can't get specific
the answer to that is either yes or no
sorry man, i'm probably going to get in trouble for even talking about a blower swap in public. i can't get specific
05-14-2006, 12:06 AM
#8
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No offense but seriously...if you're pushing that amount of PSI and you didn't even THINK of changing your headgasket along with pistons and rods than you had this coming to you...especially when you blew it the first time and replaced it with a STOCK one again. For about the same amount you could have gotten a Cometic MLS headgasket.
Lesson learned I guess.
Lesson learned I guess.
05-14-2006, 12:10 AM
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Originally Posted by Jekyl
stock pistons or aftermarket?>
was stock, since we have to break the engine down now i'll be getting forged, possibly lower compression to run the boost a bit safer. i'm not sure if it was just really bad luck, or if the gaskets just won't hold that much boost, but i think jmc007 has been running over 20psi for a good while now, that's why i let the guys crank it up to 24. i should've got that head gasket that twincharged posted a link to a while back, but i was being cheap and just got an oem one..... trying to save a few bucks just ended up costing me $1000
05-14-2006, 12:14 AM
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Originally Posted by NJHK
No offense but seriously...if you're pushing that amount of PSI and you didn't even THINK of changing your headgasket along with pistons and rods than you had this coming to you...
the piston could've been damaged from the last incident, we only checked the one that the coolant leaked into. this is also why we're breaking the entire engine down this time and having everything checked out.
why would we change our rods?
05-14-2006, 12:14 AM
#11
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Originally Posted by selfinfliction
was stock, since we have to break the engine down now i'll be getting forged, possibly lower compression to run the boost a bit safer. i'm not sure if it was just really bad luck, or if the gaskets just won't hold that much boost, but i think jmc007 has been running over 20psi for a good while now, that's why i let the guys crank it up to 24. i should've got that head gasket that twincharged posted a link to a while back, but i was being cheap and just got an oem one..... trying to save a few bucks just ended up costing me $1000
05-14-2006, 12:15 AM
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Originally Posted by selfinfliction
the piston could've been damaged from the last incident, we only checked the one that the coolant leaked into. this is also why we're breaking the entire engine down this time and having everything checked out.
What's in the past, is in the past. Get it rebuilt and boost away.
Also, isn't that much boost running the supercharger kind of hard and out of it's efficiency?
05-14-2006, 12:16 AM
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Originally Posted by NJHK
The compression at stock is fine...no need to go lower.
the lower the comp, the safer high boost will run
Originally Posted by NJHK
Also, isn't that much boost running the supercharger kind of hard and out of it's efficiency?
05-14-2006, 12:18 AM
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Originally Posted by selfinfliction
the lower the comp, the safer high boost will run
i haven't had an m62 on my car for a couple of weeks now....
i haven't had an m62 on my car for a couple of weeks now....
05-14-2006, 12:19 AM
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selfinfliction
So whats up next. And did you and your friend run down at edgewater a few weeks back few people down there said there were 2 sssc running flat 14s there. i run around cincy alot when im in town .
05-14-2006, 12:31 AM
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Originally Posted by bogout
So whats up next. And did you and your friend run down at edgewater a few weeks back few people down there said there were 2 sssc running flat 14s there. i run around cincy alot when im in town .
my car has never been to edgewater, i'm setting this car up for top speed, not a drag car. i would like to have the first cobalt around that will hit 180mph without major modifications and a blower, not a turbo.
oh.. and not on a road, when it's time i plan on taking my test and actually running this on the flats
05-14-2006, 12:44 AM
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Originally Posted by selfinfliction
one that i found in the bottom of a cracker jack box
lol.
Hey Self, thanks for the little info given. Shows a possible strong future for these cars. Thanks for going out on the limb and testing the limits. Sucks you poped a piston, but it happens.
05-14-2006, 12:53 AM
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Originally Posted by cashstacker
it sound like turbo boost to me if they a re hust "cranking it up".
Originally Posted by 05_Blue_B10WN_SS
lol.
Hey Self, thanks for the little info given. Shows a possible strong future for these cars. Thanks for going out on the limb and testing the limits. Sucks you poped a piston, but it happens.
Hey Self, thanks for the little info given. Shows a possible strong future for these cars. Thanks for going out on the limb and testing the limits. Sucks you poped a piston, but it happens.
