Hmm thought read they could do low 600s rwhp.And why can't you also run it higher boost like 18 to 20psi?
Be curious to see if the plugs and wires help the problem.
i also heard low 600's.... i think i read somewhere that anything above 16psi on the MPT70 wouldn't be reliable boost.... maybee it was some BS, not sure.
I guess it really depends on the setup though....
I am doing the plugs wires and second walbro right now.... i have to keep coming inside to warm up! Its F***ing cold outside!
Ok guys i had something else come to mind today...
I used 7.425 pushrods on my setup because of the 02 Z06 cam (it has a smaller base circle).... well it works fine for people with 241 and 243 heads.... but i am running the 317 heads.
With the 317 heads do i need to run an even longer rod? I have a set of 7.45 rods from my cam only setup i had.
I do have quite a bit of valvetrain noise, actually just about as much as the 227/231 .614 .617 112+2 cam did.
What do you guys think? Could that be a problem? I just assumed the 7.425 rods were right, but maybee they are just to short??????
Thanks,
Blaine
PS I know get a pushrod length checker, lol, I just figured i would get opinions befor i went and purchased one and went through the trouble....
you know what you get when you assume? you make an ass out of you....and well you only i guess
pushrod checker and measure man...may have missed...what lifters, stock rockers?
oh and dont listen to these crazy's who are telling you than you have insuffiencent spring...people running 13lbs of boost on stock ls6 longblocks 02z cam and ls6 springs...the springs you have, have way more pressure open and closed
Just install some truck coils! That should solve your problem!
You can pick a set up from any of the vendors on the site who keep them stockpiled in a shed out back, marked up only 30% from the price they paid at the junkyard!
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2002 Z28 M6 - Full weight street car
Quote:
Originally Posted by w3s1c0a5t
And ya the rest of us hate you for all the action you get...
oh and dont listen to these crazy's who are telling you than you have insuffiencent spring...people running 13lbs of boost on stock ls6 longblocks 02z cam and ls6 springs...the springs you have, have way more pressure open and closed
That is terrible info right there. You have MUCH more stress on the valvetrain on a boosted setup. Air is forced into the chamber rather than drawn in as in an NA setup. So everytime the valve tries to close the pressure in the system is trying to force it open. Im not saying his problem is springs but if you've hung around the Forced Induction section bad/weak springs have been ALOT of peoples problems, especially those with stock springs.
__________________ 98 TA|Erik Koenig built 383|Phamspeed T76GTS turbo kit|Built T56 w/ Southbend clutch|9
"|WS9 hood|4000+lb club| Gm High Tech Cover Car May '09
02 GTI 337|FMIC|I/E|APR tuned|
Since when does a Z06 cam require longer than stock pushrods? 7.4 should do it but with the head swap then it just becomes a guessing game unless you measure.
__________________
Arctic White SLP #7424, 17X9.5 C6 Z06 rims
Car wt. full tank 3520
so I suppose these countless 575rwhp+ stock ls6 cam and spring FI guys are lying...chode...hes running a stock LS6 cam with non stock springs
Hey genius, read my post. I said I dont think that's the OP's problem.And people do all sorts of stuff, does it make it safe? NO. Have you even built a boosted car before? Quit acting like you know what youre talking about simply because you've read it on the internet.
__________________ 98 TA|Erik Koenig built 383|Phamspeed T76GTS turbo kit|Built T56 w/ Southbend clutch|9
"|WS9 hood|4000+lb club| Gm High Tech Cover Car May '09
02 GTI 337|FMIC|I/E|APR tuned|
That is terrible info right there. You have MUCH more stress on the valvetrain on a boosted setup. Air is forced into the chamber rather than drawn in as in an NA setup. So everytime the valve tries to close the pressure in the system is trying to force it open. Im not saying his problem is springs but if you've hung around the Forced Induction section bad/weak springs have been ALOT of peoples problems, especially those with stock springs.
hmm...so tell me where my terrible information was if you were agreeing that it wasnt a spring issue....we all know those GM LS6 lobes are pretty tough to handle with a decent dual spring let alone a single stocker spring
Your horrible info is right here. You're basically implying that any boosted setup short of an all out race setup pushing tons of boost require a real valve spring. Plenty of people float LS6 springs, hell plenty of people float aftermarket double valve springs. You are not taking into account the added pressure due to boost. Not to mention that 13 psi in 1 setup is not the same as 13 psi in another setup, but I wont even go there.
Quote:
Originally Posted by Kurtomac
oh and dont listen to these crazy's who are telling you than you have insuffiencent spring...people running 13lbs of boost on stock ls6 longblocks 02z cam and ls6 springs...the springs you have, have way more pressure open and closed
__________________ 98 TA|Erik Koenig built 383|Phamspeed T76GTS turbo kit|Built T56 w/ Southbend clutch|9
"|WS9 hood|4000+lb club| Gm High Tech Cover Car May '09
02 GTI 337|FMIC|I/E|APR tuned|
ok so in his particular setup me saying not to listen to others about springs because HE is running more than enough spring for his mild turbo and weak ass lobes on his stock GM cam...this is bad advise? hmm...I'd look elsewhere man for your problem
Here are the other dyno sheets from the same day.... thought they might help.
Notice on the graph above the car only pulled to 5500 then dropped off... on the original graph i posted it made it to 5600 or a little more befor the power fell off.... also the power drop off isn't quite the same... WTF LOL
the graph below shows how the power drops off with the speed, ya it definetly doesn't help the performance of the car... Its makes 530 peak HP but with the way it drops off i bet an f-body with a solid 450hp would beat me at the track.... so dissapointing, this is driving me nuts!
What are you using to control boost? Ive seen a graph similar to that with an electronic boost controller setup wrong.
What gap on the TR6 plugs? ie is spark blowing out
What is the exhaust setup, are you running cats?
Did you try shimming the BOV and did you verify that it isnt opening under boost?
Did you do a compression test?
__________________ 98 TA|Erik Koenig built 383|Phamspeed T76GTS turbo kit|Built T56 w/ Southbend clutch|9
"|WS9 hood|4000+lb club| Gm High Tech Cover Car May '09
02 GTI 337|FMIC|I/E|APR tuned|
