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-   -   Turbo setup (http://www.hstuners.com/forums/showthread.php?t=18172)

b20boy 11-07-2003 07:34 AM

sorry for those guys that bought those kits!
i'm planning to do my own custom kit...
i'll list down the parts that i know i need..
hope i won't left out any..

1.Garrett T28 turbo from Nissan
2.Sard blow off valve
3.check valves
4.vortech FMU
5.MSD ignition system(do i need the Retard system too?)
6.All those neccessary pipes
7.boost meter, A/F meter,Oil Prssure meter, EGT meter
(what else meter do i need?)
8.Apexi AVC-R to control the boost

i plan to run the system at 7-10psi but i know the oem
Nissan turbo ie giving out more than that..
maybe it's at 13psi or so..
then can i use the AVC-R to lower it?

thanks guys

sohc_vtec 2NR 11-07-2003 09:55 PM

Quote:

Originally posted by b20boy
a TD04 with a A/R of .60
it that ideal for soch vtec engine?
it's from mitsubishi rite?
the T25 from the nissan 200sx will give out
how many hp at its best? 200hp?250hp?
i know a small turbo will spool up fast but will
it be running full boost till redline for a soch vtec engine?


i'm pretty sure the TD04 is very much ideal for a sohc vtec...greddy does offer if for their turbo kits for the civics... and im pretty sure that its from mitsubishi

thermal 11-07-2003 11:25 PM

Quote:

Originally posted by b20boy
sorry for those guys that bought those kits!
i'm planning to do my own custom kit...
i'll list down the parts that i know i need..
hope i won't left out any..

1.Garrett T28 turbo from Nissan
2.Sard blow off valve
3.check valves
4.vortech FMU
5.MSD ignition system(do i need the Retard system too?)
6.All those neccessary pipes
7.boost meter, A/F meter,Oil Prssure meter, EGT meter
(what else meter do i need?)
8.Apexi AVC-R to control the boost

i plan to run the system at 7-10psi but i know the oem
Nissan turbo ie giving out more than that..
maybe it's at 13psi or so..
then can i use the AVC-R to lower it?

thanks guys

1) T28 is fine but you may suffer some lag. Look into a T3
2)
3) Make your own. Go to my website
4) Get a 12:1 disc
5)MSD 6BTM is my recommendation. It's ability to retard boost is simply helpful when it comes to tuning your timing
6)
7) Add a fuel pressure gauge
8) AVC-R can get really complicated. GReddy profecB is the most user-friendly of all

Boost controllers will only raise boost from the initial wastegate set-point. So, if your wastegate is set at 13, the boost controller is useless unless you lower that initial spring/diaphragm tension. On internal wastegate, it could be a painful task. On exteranl wastegate, all you have to do is change the spring tension.

thermal 11-07-2003 11:33 PM

Quote:

Originally posted by thud
Sport Compact Car just did an install of the Edelbrok Kit. It blew up the engine. The "comeplete" kit came with a bad blow off valve or something. Supposed to be only 6 psi, instead it put out around 20 for about 2 seconds then boom;(

It was the wastegate that malfunctioned

b20boy 11-10-2003 10:11 PM

the T25 turbo wastegated at 14psi..
do you think stock internals can handle this boost?
how much boost can stock intenal handle max?
is there any mean i can increase the rod of the wastegate
so it can open earlier? this is just my thought...
or maybe i had to go for another turbo with lower boost wastegate?

nonovurbizniz 11-10-2003 11:31 PM

get a turbo that's NOT internally wastgated... then use an aftermarket external... they're MUCH more precise.. and you can buy different springs to change how much it allows the turbo to spool... Oh and they are adjustable +/- a couple of pounds with a simple twist of the top of it.. (some maybe not all)...

I know that the porsche 944's were not internally wastegated...

probobly more...

b20boy 11-11-2003 08:39 PM

ive thought of increasing the length of the rod.
in this way, the wastegate will opens earlier which
means i have a lower boost pressure. then i'll get
a boost controller to increase the boost when needed...
BTW, how much boost can stock internal handles b4
it got ka boom..

AzCivic 11-11-2003 09:27 PM

if tuning is done properly, the internals will take 200 wheel HP easily.

nonovurbizniz 11-11-2003 10:15 PM

Quote:

Originally posted by b20boy
ive thought of increasing the length of the rod.
in this way, the wastegate will opens earlier which
means i have a lower boost pressure. then i'll get
a boost controller to increase the boost when needed...
BTW, how much boost can stock internal handles b4
it got ka boom..



lengthening the rod will only make it stuck open all the time... not make it open earlier...

the only way to get it to open earlier would be to change the spring in the wastegate (don't think it's possible to do so on most stock ones)... you sometimes can find another stock wastegate with a lower boost setting, that will fit the other turbo...

Other than that you'd have to somehow produce extra boost to feed the vacum line going to the wastegate.

thermal 11-12-2003 02:02 AM

I wouldnt boost more than 8 psi on stock D-series internal without upgraded fuel system components. If you tamper with that internal wasgate rod, it will also prematurely divert flow away from the turbine which will cause "lag". The gate will be open all the time as mentioned....

You can still use an external wastegate with turbos that came off from other cars. You have to jam the gate shut by getting it welded in or find a way to plug it. Then just remove all the internal wastegate components off. You will have to get your turbo manifold modified for an external wastegate. Peace!

nonovurbizniz 11-12-2003 10:48 PM

I don't recomend getting an internal wastegated turbo if you PLAN on using an external... even when they're welded shut the tunnel that leads to them acts like a reversion chamber and F's up the flow of the exhaust gases...

Poor flow is the enemy of turbo efficiency.

It's certainly not the biggest deal in the world... but if you PLAN on using an external I'd get a non-wastegated turbo.


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