Vtec Engagement + Turbo

[Sexc86]

yeh cmon man why thrash you untuned and im guessing quite expensive setup? keep in mine a Forced induction Vtec is usually quite different (softer/ quieter) then your NA Vtec noise. maybe thats your problem?

[DLO01]

yeh cmon man why thrash you untuned and im guessing quite expensive setup? keep in mine a Forced induction Vtec is usually quite different (softer/ quieter) then your NA Vtec noise. maybe thats your problem?

Agree with comments ^^^

Much quieter with all the piping, intercooler etc.

[kerim]

i know what it is. You have to rem that you've prob took the pickup of the engine oil to feed the turbo. You've prob dropped the oil pressure of the engine, and maybe its too low to engage the vtec.

that could be the problem hey, coz its teed off to attach the turbo feed to it aswell, hence the lower pressure, that could be it, how can i raise the oil pressure for it to be enuf to engage.

have you checked out your vtec solenoid?

how do i do that?

[kerim]

yeh cmon man why thrash you untuned and im guessing quite expensive setup? keep in mine a Forced induction Vtec is usually quite different (softer/ quieter) then your NA Vtec noise. maybe thats your problem?

dont worry man, i keep it in vaccum most time, that could be it or also as limbo said not enuf oil pressure for it to engage

Agree with comments ^^^

Much quieter with all the piping, intercooler etc.

hows yours sound man, is your vtec engagement loud or is it bearly hearable or...?

[DLO01]

Wheres your turbo oil feed? from the back of the block? Best place to feed oil to your turbo is via a sandwich plate under your filter. But thats another subject.

What is your turbo? line sizes? Have you a restrictor? Restrictor in turbo. If you have not got a restrictive path, the oil will take the easiest route, that being through the turbo straight to your sump. And your engine will not be getting much oil. If your not hearing Vtec then its quite possible your pressure is not enough and you could be risking your motor.

Of course Vtec is going to sound less. NA you have an arm and a filter on the end. Vtec induction noise ftw.

Boosting you have piping, piping, more piping, intercooler, piping, turbo, piping, filter. Of course its not going to sound as loud. You can still hear the crossover, its just less of an induction noise and more of an engine noise.

Oh yeh, and don't boost her untunned. ping ping boom.

[barefootbonzai]

Just be carefull bro, you dont' wanna go blowing your motor. Try disconnect the intake arm, so your car is running in NA form. See if vtec is still engaging.

[kerim]

Wheres your turbo oil feed? from the back of the block? Best place to feed oil to your turbo is via a sandwich plate under your filter. But thats another subject.

What is your turbo? line sizes? Have you a restrictor? Restrictor in turbo. If you have not got a restrictive path, the oil will take the easiest route, that being through the turbo straight to your sump. And your engine will not be getting much oil. If your not hearing Vtec then its quite possible your pressure is not enough and you could be risking your motor.

Of course Vtec is going to sound less. NA you have an arm and a filter on the end. Vtec induction noise ftw.

Boosting you have piping, piping, more piping, intercooler, piping, turbo, piping, filter. Of course its not going to sound as loud. You can still hear the crossover, its just less of an induction noise and more of an engine noise.

Oh yeh, and don't boost her untunned. ping ping boom.

Oil feed line is from back of block, using a 3/8 oil feed line and 5/8 oil return line, not too sure about the restrictive part

Just be carefull bro, you dont' wanna go blowing your motor. Try disconnect the intake arm, so your car is running in NA form. See if vtec is still engaging.

should do that, sounds logical, will give it a try

[DLO01]

Oil feed line is from back of block, using a 3/8 oil feed line and 5/8 oil return line, not too sure about the restrictive part

I would trying to figure out what the problem is before you start Vtec-ing.

What turbo?

If it is not a GT turbo you may need to run a restrictor. Like I said the pressure will take the easiest path to your sump and you will have bugger all pressure for the motor. This could be why your not hearing Vtec.

[kerim]

nah not GT turbo, so wont have restrictor then

So is this what i need
http://cgi.ebay.com/ebaymotors/Turbo...spagenameZWD2V

And as you said before, if not enough oil pressure it can risk the motor, so i should get one of these then hey

[DLO01]

So its not a GT turbo. These come with and inbuilt restrictor.

Is it some other ball bearing? This may need a restrictor if it does not have one.

Is it a Journal type? Most people don't use restrictors as they are not usually required unless your blowing smoke out the back.

[kerim]

its blowing smoke so ill get a restrictor, i think i might have one lying around or can always DIY like this, lol
http://forums.hybridz.org/showthread.php?p=765490

[DLO01]

I wish you would have said its blowing smoke in your 1st post.

This could possibly be your problem, or could be contributing to the problem. Your turbo could be frked and your just band aiding the problem. Or it could be something else as well.

Just be carefull with restrictor size. Journal turbos require more oil than ball bearing.

Get a oil pressure gauge so you can see and monitor.