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Old 05-28-2019, 12:19 AM   #101
Zadok
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Member#: 38360
Join Date: Jun 2003
Location: Harrisburg, Pa.
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2006 Baja Turbo 5MT
Atlantic Blue Pearl

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Itís alive!
Reset the timing again. Exhaust cam retard setup. Rebuilt the downpipe again. And wrapped up the rest. Took her for a drive and it didnít run half bad. Definitely running a little leaner than the EJ255. Left the stock boost to 10psi until I get it tuned. Have to fix the exhaust again for the 4th time. Itís hitting the carrier bearing. Power steering is whining. Thatís new and annoying. Everything else seems good. I didnít install the oil filter relocation kit & cooler, the wideband O2, or the EGT probe yet. I have 2 weeks until we talking it upstate camping. Need to install the basket, custom fab kayak racks, & lights also. I think I have my work cut out.
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Old 05-29-2019, 08:29 PM   #102
warpwar
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Quote:
Originally Posted by Zadok View Post
Itís alive!
Reset the timing again. Exhaust cam retard setup. Rebuilt the downpipe again. And wrapped up the rest. Took her for a drive and it didnít run half bad. Definitely running a little leaner than the EJ255. Left the stock boost to 10psi until I get it tuned. Have to fix the exhaust again for the 4th time. Itís hitting the carrier bearing. Power steering is whining. Thatís new and annoying. Everything else seems good. I didnít install the oil filter relocation kit & cooler, the wideband O2, or the EGT probe yet. I have 2 weeks until we talking it upstate camping. Need to install the basket, custom fab kayak racks, & lights also. I think I have my work cut out.
Which fuel injectors did you use? the Baja's Yellow or the EJ20x's Blue ones?
I'm running into some knock issues with mine, I'm running down a few ideas.

Thank you.
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Old 06-02-2019, 06:08 PM   #103
motorbykemike
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i'll add to this just for the point of more info for future swappers

car is an 05 obxt auto ,old motor had a burnt ex valve and was bone stock other than a recent bnr16g turbo and fp inline filter for the turbo oiling

I purchased a pre-facelift/non secondary air pump manual trans ej20x (?I assume it's an x not y) engine with the td04hla ts turbo that had a dp stubby that appears to be an hks part , there was no intercooler but everything else was there

I used everything that came on the ej20x/y other than the following

I swapped both intake and exhaust cams to 04-06 sti usdm parts and used the us non avcs ex gears and ex cam seals, the sti cams are about 1mm more lift than the ej20x/y cams , amazingly the buckets did not to be changed , resealed the valve covers using 08up usdm sti gaskets

swapped in a new for my cars vin engine wiring harness and got rid of some ex avcs plugs I didn't need at this point and gained some tgv plugs that I just might use later on

swapped in some oem yellow sidefeeds in place of the smaller ej20x/y set, mainly to work from a us lgt/obxt cobb stg tune to start (turns out that's no bueno, tune time)

ported a set of 04-07 sti/lgt exhaust mainfolds and used a coated grimmspeed cross pipe and wrapped invidia up pipe , the upper ex mani heat shield tin on the right side needed to be trimmed to clear the ex avcs parts

used the bnr 16g evo3 turbo that came on the car

used the tmic w/ bracket , brake booster hose & map sensor w/ filter from the obxt

used a very old perrin 2 piece twin cat down pipe and modded a spt lgt cat back to fit the obxt and some 2015 sti mufflers with modded hangers

car is running the oem us 2005.5 obxt ecu and custom tuned through a cobb apv3

the only codes I got were the 4 tgv plugs and the pcv valve connector is not plugged in so that one as well

Last edited by motorbykemike; 06-03-2019 at 10:04 PM.
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Old 06-04-2019, 10:25 PM   #104
Zadok
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2006 Baja Turbo 5MT
Atlantic Blue Pearl

Default EJ20X into a 2004 Baja Turbo

Quote:
Originally Posted by warpwar View Post
Which fuel injectors did you use? the Baja's Yellow or the EJ20x's Blue ones?

I'm running into some knock issues with mine, I'm running down a few ideas.



Thank you.


I used the yellow Baja injectors for now. I will be getting 850-1050cc injectors so I can run an E30-40 mix.
Iím also running an aftermarket fuel pressure regulator set to 43.5psi unplugged.
For now Ray at Turbotektuning is working with it to get it tuned. Base tune doesnít run bad. Iím glad Iím finally getting to use my grimmspeed ebcs. Base tune is only 12psi 91octane. Main tune will only be 15psi 93 octane. Iím going conservative for now. I didnít swap the trans and it doesnít sound that great.

Last edited by Zadok; 06-12-2019 at 02:42 PM.
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Old 06-12-2019, 02:41 PM   #105
Zadok
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Atlantic Blue Pearl

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So Iím getting the car tuned and it doesnít have any torque. I spoke to the tuner and he said that he has done many EJ20X/Y engine and retarding the exhaust cams causes the engine timing to get messed up. And thatís exactly how it feels. Hopefully Iíll be able to retime it to stock and Iíll get some torque back. It literally would not go up an 10í 30 degree climb in 1st gear nor would it hold 60mph in 4th gear to the floor on a 15 degree climb up a mountain. Pathetic.
Iíll keep everyone informed on how the timing change affects the drivability of the car.
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Old 06-12-2019, 02:47 PM   #106
Mreed6360
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Silver?

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Keep us posted, my attempt to get the exhaust cams as close to zero may not have been the best. It made sense at the time based on what I had read, but I'm not an experienced tuner.

So far I think mine runs well, but maybe I'm missing all the low end torque and just don't know it? I never drove my Baja with the 2.5 motor, so I'm not sure what I'm missing.

I'm very interested in what a real tuner/shop with experience has to say.
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Old 06-12-2019, 02:49 PM   #107
Zadok
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2006 Baja Turbo 5MT
Atlantic Blue Pearl

Default EJ20X into a 2004 Baja Turbo

Itís easy to figure out. If itís ok through the power band and then it ****ing rips at 5k, itís loosing torque.
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Old 06-12-2019, 02:57 PM   #108
Mreed6360
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I wouldn't say that's what I'm getting. I feel like I've got good pull from 3k ish on up. And no big spike at 5k.

But, I don't have a Dyno, so no hard data to work with.
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Old 06-12-2019, 07:09 PM   #109
Mreed6360
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Silver?

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Quote:
Originally Posted by Mreed6360 View Post
I wouldn't say that's what I'm getting. I feel like I've got good pull from 3k ish on up. And no big spike at 5k.

But, I don't have a Dyno, so no hard data to work with.
I'm betting mine is different because I copied the JDM intake avcs map over. And it has gone of advance compared to the Baja map.
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Old 06-13-2019, 06:37 AM   #110
Zadok
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Join Date: Jun 2003
Location: Harrisburg, Pa.
Vehicle:
2006 Baja Turbo 5MT
Atlantic Blue Pearl

Default EJ20X into a 2004 Baja Turbo

Very possibly.
I swapped the timing belt back to stock last night. And it is definitely better. And for all those who donít know, if you take the ac & alternator off and move it to the side, you can put a C clamp over the entire tensioner and block and compress the tensioner without removing it or any of the other pulleys.
WTH that being said, I was able to go up my neighbors driveway in 1st and almost 2nd and itís like a 45-50 percent grade. Itís steep as ****. Definite could not do that before. And the power band feels more even now. With that being said, Iím still running off the map Ray made me with the old timing corrections. Hopefully it gets even better than that with his map.
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Old 06-13-2019, 06:41 AM   #111
Mreed6360
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Cool! Glad to hear it's improving. I feel like I should go back over my cam timing theory in more detail. Mine runs ok I think, but maybe my original thinking was not the best.
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Old 06-13-2019, 06:46 AM   #112
Zadok
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Member#: 38360
Join Date: Jun 2003
Location: Harrisburg, Pa.
Vehicle:
2006 Baja Turbo 5MT
Atlantic Blue Pearl

Default EJ20X into a 2004 Baja Turbo

Itís ok man. Thinking out of the box is awesome. Ray tells me that retarding a full tooth actually retards it almost 2 due to the rotation equalization. I must say thatís a little over my head, I think he means that with a timing light, the belt rotation would show both cams being retarded as a whole equaling 2 teeth/14 degrees? and thatís too far. Cam gears would be the only way to retard it accurately.
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Old 06-13-2019, 06:52 AM   #113
Zadok
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2006 Baja Turbo 5MT
Atlantic Blue Pearl

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Are you getting any knock with the timing so far advanced?
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Old 06-13-2019, 08:57 AM   #114
Mreed6360
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Silver?

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I had a little knock under mid load mid rpm, but I pulled the ignition timing back a few degrees and that cleared it up.

It comes on power at a about 2800 ish RPMs and pulls steady to 6.5k. I have the auto so it's a little annoying with it's shift points and general lack of feel.

My goal with the cam timing was to make it as close to stock for what theJDM motor was as I could, since messing with it without a Dyno and real experience is tricky. There is a whole lot of stuff where you get into changing volumetric efficiency and that is over my head currently.
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Old 06-13-2019, 08:59 AM   #115
Mreed6360
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Silver?

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Sorry, just reread your question. I should have clarified, I have lots of intake cam advance, not ignition advance.
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