One more 2.7i thread

[usingthejohn]

Subbed for future reference. Thanks guys


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I am here: http://tapatalk.com/map.php?tgyhbj

[BenMGP]

no shit! Thats very good numbers then!

Yeah. Not too shabby. Tuner feels like the cat and stock headers/exhaust is what prevented us to get a bit more out of it. It feels great. Think I will love it more when I go the 3.73

[e30trooper]

You wont, but its an inferior head. The compression is vastly outweighed by the better flow of the 885 head. Not to mention availability. I actually had a 731 head, but ended up selling it and getting an 885.



I have a 2.7i thats setup similar to the guy above (#19, tune, no cat 2.5" exhaust) and it pulls harder than any stck m20b25 i have driven to date. Perhaps there are b25s out there that would, but i havent driven one.

so you put in seta block?

Yeah. Not too shabby. Tuner feels like the cat and stock headers/exhaust is what prevented us to get a bit more out of it. It feels great. Think I will love it more when I go the 3.73

yea that power seems fun. Your at m50 whp... What kind of tune?

[BenMGP]

Dynotech Motorsports dynotuned it and burned a custom chip.

[BergerNJ]

1) Cam would be good, headers, MAF or MAP sensor, etc. Just get the head to flow as much as possible! If you want to try your hand at gasket matching go for it, but I would advise against porting. It is easy to make it flow worse than before if you don't know what you're doing. Believe it or not, the engineers that designed the head knew what they were doing and got it to flow pretty well!

so youre saying any ported head wouldnt flow as well? if theres more space, and its a flush and even port how could it flow worse then stock?

I'm curious because I'm on the verge of buying a ported and rebuilt head.

[acolella76]

so youre saying any ported head wouldnt flow as well? if theres more space, and its a flush and even port how could it flow worse then stock?

I'm curious because I'm on the verge of buying a ported and rebuilt head.

I am just saying that there is a lot of thought put into directing air so it flows smoothly. Not EVERY ported head will flow worse than stock, but it is easy to make the head flow worse than stock if the porter doesn't really have a firm understanding of what they are doing.

[e30trooper]

Little update. Getting the head sent out tomorrow for decking,hot tanking,valve job , leak test and everything eles. Will order all new gaskets/parts tonight. Couldnt find the 87i harness so ill ve using one from a 90. My only worries are the o2 sensor since im going to run the stock e exhaust.

[BenMGP]

Little update. Getting the head sent out tomorrow for decking,hot tanking,valve job , leak test and everything eles. Will order all new gaskets/parts tonight. Couldnt find the 87i harness so ill ve using one from a 90. My only worries are the o2 sensor since im going to run the stock e exhaust.

Why don't you pick up the "i" exhaust? Always see them for sale cheap. Did you already get a new clutch, resurface the flywheel, etc?

[BenMGP]

BTW, I was running lean before I dropped in the 19# injectors if you have not thought of that yet.

[e30trooper]

Why don't you pick up the "i" exhaust? Always see them for sale cheap. Did you already get a new clutch, resurface the flywheel, etc?

BTW, I was running lean before I dropped in the 19# injectors if you have not thought of that yet.

Yea exhaust can wait. How are you running lean on a stock set mup? Im not going to run a aftermarket cam anymore. I shouldnt have any issues.

[BenMGP]

No idea. But before the injector upgrade and tuning, I was lean.

[e30trooper]

Small update.

Picked up a head/intake and tb about two weeks ago. Had the head sent out. Was sand blasted,hot tanked deck .0100 , valve/seats ground new guides and a little more work. The head looks brand new. Got my parts from pelican few days ago and got all my I swap parts yesterday. Looks like weds. I will start the build. Ill be sure to take pix. Total amount spent for swap and rebuilt head 520.00

[shaferbm]

I'm looking forward to seeing your progress. Your build may be my template in the future, and this thread as reference.

[e30trooper]

thanks^ im going to wake up early tomorrow and get to work!

pix of the head b4 and after

dirty head straight from the yard.


clean head from the machine shop





intake with fuel rail / injectors back on

[e30trooper]

Anyone know how to wire up a CEL? Eta's never came with one. How do i make this work?