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Japanese AST Delete MOD?

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Old 11-20-11, 11:52 AM
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Japanese AST Delete MOD?

Well I bought a JDM engine , and I was looking for the AST Tank to delete it . but I cant find the big black tank that people keep talking about ( first time I've taken a close look in real life at the 13b-RE-TT how ever you wanna call it LOL ..


Well this is a picture of it . its been raining and I haven't had a chance to take a VERY good look for the AST but isn't it supposed to be here?




Now I took the cap off and there is no thermostat , but from wat I read from the AST delete on the FAQ http://www.fd3s.net/coolant_tank_elimination.html


see the top uses an FC neck , with a thermostat does mine not having that thermostat mean water will constantly go in circles ? or is there a thermostat somewhere else thats holding the water ,

I am sorry if these seems like common sense It should but I just have NO idea .
Old 11-20-11, 12:03 PM
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Not all of the FD filler necks have the replaceable top.
Old 11-20-11, 12:50 PM
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Originally Posted by Mahjik
Not all of the FD filler necks have the replaceable top.
since mine doesnt where do I go from here? do I need an AST ? or a new one with a replacable top ? or is there some sort of other fix?


Could I use something like this http://www.ebay.com/itm/Discovery-TH...sories&vxp=mtr an independant thermostat housing , one line out and then the other line goes into the reservoir and I can either plug that final line or divert it somewhere else? or keep lookingfor some better thermostat housing with only one entrance / exit .

Last edited by Tem120; 11-20-11 at 01:08 PM.
Old 11-20-11, 02:13 PM
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You could drill and tap a hole to use as an over flow line.
Old 11-20-11, 02:19 PM
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Originally Posted by tafkamb2
You could drill and tap a hole to use as an over flow line.
I see and then put a cap with the thermostat .
Old 11-20-11, 02:28 PM
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Your JDm engine is a Series 7 or 8....which means it has a 16 BIt ecu and harness.. How are you planning on running that engine in a USDM Series 6 8bit chassis?
Old 11-20-11, 02:41 PM
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do you actually need the overfill bottle ? or can you also cap that nipple also ? so overfill bottle and ast delete.
Old 11-20-11, 03:09 PM
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I think you need the overflow bottle..the coolant needs to go somewhere when it gets hot and expands
Old 11-20-11, 04:48 PM
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Originally Posted by Japan2LA
Your JDm engine is a Series 7 or 8....which means it has a 16 BIt ecu and harness.. How are you planning on running that engine in a USDM Series 6 8bit chassis?
This doesn't apply to me right? I bought a brand new JDM shortblock but I still have my USDM engine and whatever harness, sensor etc. it comes with. Btw I have the same radiator filler neck as the OP.
Old 11-20-11, 07:11 PM
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Originally Posted by Alpsta
This doesn't apply to me right? I bought a brand new JDM shortblock but I still have my USDM engine and whatever harness, sensor etc. it comes with. Btw I have the same radiator filler neck as the OP.
I'm in full panic mode now.how can you tell its a nwer series engine? just from the neck on that thing ?
Old 11-20-11, 07:26 PM
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Originally Posted by Alpsta
This doesn't apply to me right? I bought a brand new JDM shortblock but I still have my USDM engine and whatever harness, sensor etc. it comes with. Btw I have the same radiator filler neck as the OP.
Nope, you are fine.. the shortblocks 92-02 are all interchangeable..
Old 11-20-11, 07:28 PM
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Originally Posted by Japan2LA
Nope, you are fine.. the shortblocks 92-02 are all interchangeable..
I gotta give it to you .. you know your stuff.. yup just like you said.. its different ..

upfk my life.. haha aww man this is great its just awesome...

so what do I need? a usdm engine harness?

to switch the pins .. and connectors ? lol man I just have to laugh because this kind of irony is unheard of haha

also BTW selling series 7/8 harness hahaha man You gotta love these little hiccups in life that just bring your whole world crumbling lol .. well atleast it happened now before I got my hopes up tomuch .

Last edited by Tem120; 11-20-11 at 07:38 PM.
Old 11-20-11, 07:33 PM
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Originally Posted by Tem120
I'm in full panic mode now.how can you tell its a nwer series engine? just from the neck on that thing ?
in the pic you posted I spy:
Metal Y-pipe
Series 7/8 alternator tensioner bracket
1 piece thermostat housing


^ these only come on Series 7/8 engines


Look at your engine:

Does it have :

Mikuni OMP
OBD II large white/grey plugs on the engine harness where it plugs into the ecu
OBD II 16 bit N3C1, N3C8, N3G1,N3G8 ecu

Post more pics and I will point out more stuff...
Old 11-20-11, 07:37 PM
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knightsports do a harness patch to allow the 16 bit ecu onto the 8 bit harness
they even sell a worked up 16 bit ecu to suit
Old 11-20-11, 07:44 PM
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Originally Posted by Japan2LA
in the pic you posted I spy:
Metal Y-pipe
Series 7/8 alternator tensioner bracket
1 piece thermostat housing


^ these only come on Series 7/8 engines


Look at your engine:

Does it have :

Mikuni OMP
OBD II large white/grey plugs on the engine harness where it plugs into the ecu
OBD II 16 bit N3C1, N3C8, N3G1,N3G8 ecu

Post more pics and I will point out more stuff...
it didn't come with an ECU I have a power FC for the 6 series . lol

But I just tried plugging the Power FC onto the engine and nope nada .. lol well .... I'm going to give the people I bought it from a call tomorrow .. and give them a nice peice of my mind....


so if lets say I got the engine harness from a USDM car everything would be ok? because i kindo f have one but its all cut up .. I could attempt to repair it .. or maybe make a hybrid! .. if the people who sold me the engine wont do anything .

or just fork out hte cash for a good harness .. lol .. ? sorry japan just dropped the abomb right back at me LOL

Last edited by Tem120; 11-20-11 at 08:02 PM.
Old 11-20-11, 08:05 PM
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Originally Posted by Japan2LA
in the pic you posted I spy:
Metal Y-pipe
Series 7/8 alternator tensioner bracket
1 piece thermostat housing


^ these only come on Series 7/8 engines

.
so is the Metal Y pipe , a good thing ? does this mean I have better turbos ? ( sorry I'm grasping at straws here )

to keep myself from tying a noose using that loose belt on the engine .
Old 11-20-11, 08:13 PM
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You will need:

USDM N3A1 engine harness or JDM N3A7 engine harness
Complete Series 6 rats nest and all the solenoids
Series 6 map sensor
and maybe some other stuff to make it run on Series 6 8 bit componets
Metal Y-pipe is an up grade

Your turbos are most likely N3C1 unless your engine is N3G1 which would mean you have the 280 PS turbos..

Your engine is also missing the airpump..
Old 11-20-11, 08:27 PM
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Originally Posted by Japan2LA
You will need:

USDM N3A1 engine harness or JDM N3A7 engine harness
Complete Series 6 rats nest and all the solenoids
Series 6 map sensor
and maybe some other stuff to make it run on Series 6 8 bit componets
Metal Y-pipe is an up grade

Your turbos are most likely N3C1 unless your engine is N3G1 which would mean you have the 280 PS turbos..

Your engine is also missing the airpump..
hahaha man ... thanks.. is there a cerial number where you can check for the n3c1? or N3G1 , I want those straws damnit!

rats nest .. lol man .. thank you


would it be easier buying a series 7 / 8 computer and than just changing the plug for the car harness ? sorta like a home made adaptor like bumstart said knightsport has ?


and anything else besides that ? so I can tell them all I need .. also is there a market for series 7/8 stuff ?

Last edited by Tem120; 11-20-11 at 08:47 PM.
Old 11-20-11, 08:47 PM
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Originally Posted by Tem120
hahaha man ... thanks.. is there a cerial number where you can check for the n3c1? or N3G1 , I want those straws damnit!

rats nest .. lol man .. thank you


would it be easier buying a series 7 / 8 computer and than just changing the plug for the car harness ? sorta like a home made adaptor like bumstart said knightsport has ?
I dont know about the adapter that Knightsports may produce. I am guessing it adapts the 8 bit dash plug to obd II so that it can plug inro the ecu.. If this is the case than you will need the special Knightsports adapter, JDM ecu, and an 16 bit map sensor to get the engine to run in your Series 6 chassis..

I have the correct 16 bit ecu, I get $250.00 for those..

Look on the engine harnes, should have a part # tag

What part # is on the harness?
Old 11-20-11, 09:36 PM
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its an N3F1 and as for the 16bit I want to go with a power FC , do you have a 16 bit power FC?

Last edited by Tem120; 11-20-11 at 10:04 PM.
Old 11-21-11, 10:21 AM
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Originally Posted by Tem120
its an N3F1 and as for the 16bit I want to go with a power FC , do you have a 16 bit power FC?


Then you have N3C1 turbos and your engine is the lower HP version 265PS

I dont have power FC for Series 7/8 yet I have seen them FS on ebay

About 700 used

$1100.00 New..

You will still need to correct map sensor and I have that if you need it..

Good luck on the Knightsports adapter.. that may be hard to get.. I looked thru my catalog and did not see it there.. You will have to contact them and see if they still sell/make it..
Old 11-21-11, 04:57 PM
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Originally Posted by Japan2LA
Then you have N3C1 turbos and your engine is the lower HP version 265PS

I dont have power FC for Series 7/8 yet I have seen them FS on ebay

About 700 used

$1100.00 New..

You will still need to correct map sensor and I have that if you need it..

Good luck on the Knightsports adapter.. that may be hard to get.. I looked thru my catalog and did not see it there.. You will have to contact them and see if they still sell/make it..

I think I will just switch the wiring to that of the series 6 and use my power FC . , using the power FC do I still need the old rats nest , the old selenoids as well??

is this because the plugs are different ? or because they wont work with the 8 bit power FC input ..

I thought all the power FC's were the same .
Old 11-21-11, 05:04 PM
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Originally Posted by Tem120
I think I will just switch the wiring to that of the series 6 and use my power FC . , using the power FC do I still need the old rats nest , the old selenoids as well??

is this because the plugs are different ? or because they wont work with the 8 bit power FC input ..

I thought all the power FC's were the same .
OBD I PFC is different than OBDII PFC

Sure swap it over to 8 bit, I already listed the parts you will need to source
Old 11-21-11, 06:40 PM
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Originally Posted by Japan2LA
OBD I PFC is different than OBDII PFC

Sure swap it over to 8 bit, I already listed the parts you will need to source
ok well I'm sorry to keep asking all these questions .. but i'm trying to cut my losses . do I need to replace the solenoids to?? why is that do they receive different signal than the earlier solenoids ? or because the plugs are different ?
Old 11-21-11, 06:50 PM
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I was told I could reuse the rats nest as well .. I've never even heard ofthe rats nest I dont even know what it does .


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