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

 

You tease us waaaaaaay to much, but good stuff

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

 

AWWWWWW COME ON MAN!!!!

Just tell me this then, would a company that ryhmes with nipple make the type of blower that is on your vehicle?

 

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

 

selfinfliction you are my hero. Enough said.

 

stock pistons or aftermarket?>

 

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.

 

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

 

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?

 

The compression at stock is fine...no need to go lower.

 

Understood that but it could have been avoided, that's all I was saying.

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?

 

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....

 

This is turbo boost?

 

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 .

 

blower

 

Thanks for the info. Something else for me to consider.

 

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

 

which blower?

 

one that i found in the bottom of a cracker jack box

 

it sound like turbo boost to me if they a re hust "cranking it up".

 

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.

 

i use that term very losely... it's more along the lines of testing different size pullies to see which one does what amount of boost for that blower.

that's what i like though... the TOG thing sort of screwed me over, especially when i tried to run their downpipe and burnt a hole in the material on the firewall from a leak

 

Man, get those temps down! It sounds like you're really detonating at those boost levels.

 

tisk tisk...secrets aye? lol