keep blowing up vt v6s

[jabba52]

hey guys need some help my vt ecotech engines keep shitting themselves in my street stock and it always seems to the conrod bearings, what is going wrong, or what am i doing wrong?? it always has good fuel and oil pressure

[acarmody]

You have it near the rev limiter to long and the Ecotecs will throw big ends fairly well.

[social]

so stop doing skids in first gear!

[delcowizzid]

too much timing and rev limiter will kill one quick smart at revs . are you just fitting stock vt engines or built ones.and are you running the 808 vn ecu's

[Z2TT]

Do the Ecotecs not like revs over 5-6K, Never knew that would kill them quick I should stop thrashing mine, i haven't done any mods.
Is it any weakness in the engine that makes it not like those revs, oil flow?

[acarmody]

The valve train isn't the sturdiest thing in the world, and thrown big-ends is fairly common in Ecotecs. Remember these engines were built to be an economical engine to move a family sedan not a burnout engine.

[TappetHead]

Can we get some more info?
When you say "street stock" are we talking standard road car or a class of racing?
what type of driving? You doing skids? hitting the limiter? very high speeds or fast cornering?
Manual or auto?
What fuel are you using?

[immortality]

with street stock i would take it to mean that you mean speedway/ circle dirt track stuff.

although you may think that you have good oil pressure, constant sideways action/ throwing the car into corners on/off the gas etc gonna give you oil surge. any particular rod/rods that keep eating the bearings and throwing a leg out of bed?

[jr689]

Surely Holden would put the rev limiter at an rpm that is deemed safe for the engine... However this doesn't mean to just keep bouncing off it, but I'm sure the engine can safely handle revving closely to it before you feel the need to change gears!

[VT-565]

They're cheap as shit, just keep changing them ha ha ha ha

OR!!!

Screw a 2 inch block of timber to the back of the accelerator pedal

[jabba52]

Can we get some more info?
When you say "street stock" are we talking standard road car or a class of racing?
what type of driving? You doing skids? hitting the limiter? very high speeds or fast cornering?
Manual or auto?
What fuel are you using?

hay its a dirt speedway car . we just race round n round both ways. its got a vn t5 preium we run in 2nd n my diff is 292

[jabba52]

hay gys thanks 4 ur help

[TappetHead]

Have a chat with ASR about a sump, I know they have them in stock

[jabba52]

have a chat with asr about a sump, i know they have them in stock

hay mate cant use diff sump the class i race in dose not allow it thanks ne way

[immortality]

try over filling the sump a little. still talk to ASR, maybe they can make some baffles for the sump to combat oil surge etc

maybe also fit another oil pressure switch that is set for 40psi attached to a shift light or some similarly bright so you know when the oil pressure is starting to drop before serious damage is done because the factory oil pressure light doesn't come on until oil pressure drops to 6psi and if you have the loud pedal mashed into the floor the damage has already been done at that point.

[TappetHead]

Good idea....might pay to move the pick up too.

[VT-565]

Overfilling could cause more problems than it solves, due to foaming.

Baffles/trapdoors could be a step in the right direction though.

Tried throwing a set of different bearings in it before you sodomise the engine?

[jabba52]

hay seens i run a vn loom do i use nock sencers

[immortality]

the VN loom/808 ecu uses 1 knock sensor. are you running a standard tune? if so it will have to much timing for a ecotec motor and it will ping which will also kill your bearings

[jabba52]

the VN loom/808 ecu uses 1 knock sensor. are you running a standard tune? if so it will have to much timing for a ecotec motor and it will ping which will also kill your bearings

hay mate thanks 4 that wots the best way 2 retard timeing

[Clutchy]

Yeah best bet is to run the knock sencer mate and are you doing anything with the back of the harmonic balancer ?

[Clutchy]

the VN loom/808 ecu uses 1 knock sensor. are you running a standard tune? if so it will have to much timing for a ecotec motor and it will ping which will also kill your bearings

standard sealed computer from vn/vp. there is a few different tunes in the standard comp try runnin it on the dyno with a couple different computers see if ya can find 1 thats got a better tune in it Jase.

[db_notso]

round track sump need cuctom baffles to stop oil running away from your oil pick up would be my guess
that or its as simple as dirt getting into motor trhough intake into oil then eventually into your bearings

note: baffles are internal and cant be seen

[jabba52]

round track sump need cuctom baffles to stop oil running away from your oil pick up would be my guess
that or its as simple as dirt getting into motor trhough intake into oil then eventually into your bearings

note: baffles are internal and cant be seen

were do i get baffles from???

[jabba52]

Yeah best bet is to run the knock sencer mate and are you doing anything with the back of the harmonic balancer ?

wot can you do with the harmonic balancer ?