Honda D Series Forum banner

1 - 9 of 9 Posts

·
Registered
EG hatchback
Joined
·
345 Posts
Discussion Starter #1
I just started my new d16z6 fresh build vitara t3t4 turbo. I got it to idle rev and all. for the first day. reves ok no high idle etc. without tany vacuum lines hooked up.

today I found a massive exhaust leak near the header turbo manifold exhaust valve. I fixed the leak valve issue I put a ring like adapter under the wastegate. ok.

also found the turbo wasn't spinning. I rev the engine also it dont' hit boost cuts off like about 3k-4k.


I hooked up the boost controller #1 to T with # 2 & #6
hooked up # 7 & # 5.


started engine engine engine idles hight like 1500rpm to 2k max.
I tightened plus the boost controller like almost 2 turns to max. the idle came back to regular almost like around 500 to 750rpm at engine idle.

Now the turbo fins starts to spin. wo hoo

but I rev the engine it seems to just rev like about 3k to 4k and the car don't hit boost.


I have a base map calibrated with s300p28 chipped ecu.
tune to 10psi and 550cc etc. fuelpump 255lph. map sensor
I don't drive it yet because I didn't yet install my cv axle and just start the vehicle in neutral.


ok what is the correct way to hook up my vacuum lines bov etc?
need help.

the problem is also at idle it cuts off 3k -4k ?
anyone would know?

please help me. I don't know what to really look for I am very now to this..




I POST A PICTURE DIAGRAM HOW MY HOSES NEEDS HELP TO HOOK UP?
 

Attachments

·
Registered
Sloppy Jalopy
Joined
·
977 Posts
it needs a little more than a base map to run properly .

also your "don't hit boost" issue ,you won't see much psi unless you are driving and the car is under some load.
 

·
Registered
Joined
·
18 Posts
its one of three things:

-Big enough exhaust leak pre turbine housing that its acting like an open wastegate.
-your wastegate is open/leaking.
-your engine is being revved in neutral, thus there is no load and airflow is to low to sufficiently spool your turbo.

A typical t3/t4 wont start to spool until around 4k rpm WOT.
 

·
Registered
EG hatchback
Joined
·
345 Posts
Discussion Starter #4
I fixed the waste gate leak turbo manifold. it needed a special ring adapter out on under the flange. I mounted and the valve is now closed. No leaky also no leaky pipes turbo etc.

It's my first turbo setup also need help on the bov boost controller waste gates etc nipple vacuum hoses idk where they go I posted a pic if anyone can help me where to route them.

Does all t3t4 cut off at like 3k to 4 k at engine neutral idle? Wtf I'm new to this I see the bov opening and closing and don't see any boost building in the gauge it just cuts off like a rev limit. I can't even redline it at engine neutral why is that?
 

·
Registered
Joined
·
504 Posts
Your motor won't build boost in neutral. It needs a load so it will only show positive pressure after driving. The bov operates with vacuum. So when you rev it and you basically go to 0 vacuume it will close by spring pressure, but once you let it go to idle it has enough vacuum to pull it open. As suggested, take it to a tuner so you don't waste all your money and blow it up.
 

·
Registered
ej8
Joined
·
6,365 Posts
Lol.......

Lmao......

You have to many post for this childish stuff.

You shouldnt be turboing without knowing how things work.

Just a few tips.

Its not a tune if you just download and loaded a map.
Its a basemap or better called a starting point for your tune.

Next , turbo need load in order to give out boost.
So no boost in N, hell most dont hit full boost in 1st.
So you either need a tiny palm turbo or a 5.0 13:1 comp

Next look up boost vac routing.
Its been said tons of times with tons of pix
 

·
Registered
97 honda coupe
Joined
·
7,611 Posts
First off, i know this is your first turbo build, your excited and want to see results ASAP. But try to take your time and think things through before brashly cobbling things together, on turbo builds this usually does not end well. I know this first hand.

if your idle is raising when you adjust your boost controller your wastegate is leaking, or it is hooked up improperly. No load boost will barely spool a turbo, let alone start building boost by just blipping the throttle (a properly sized turbo anyways).

Honestly, take the boost controller off and run just off the spring (IE: put the wastegate directly to the pressure side of the intake system IE: before the throttle body but after the turbo) then you can adjust from there once you get a baseline. Last thing you need is inconsistencies when attempting to tune the engine.
 
1 - 9 of 9 Posts
Top