1.3 Motronic Up-Grade & 2.7i How To

[ck_taft325is]

alright are you talking about using the 2.7 bottom end with the 2.5 head? and if so yes you must use a chip that is designed for the 173 ecu and 1.1/1.3 motronic harness and wiring you have installed.

This.

It's really about how far you take your 2.7i. If done correctly and you use the 885 head with intake, TPS, TB, wire harness etc, etc... on the ETA 2.7L block and internals, you would inevitably have to replace the ECU with one from an "i". So the chip you would use would be a 2.5 "i" (or 173 ECU) Chip.

Then boost it.

[e30pwr]

alright are you talking about using the 2.7 bottom end with the 2.5 head? and if so yes you must use a chip that is designed for the 173 ecu and 1.1/1.3 motronic harness and wiring you have installed.

[E30QC]

so, how does the 2.7 bottome end play with these settings? i mean, i use a 2.5 ecu anyways. no?- yes. right? no? yes! no?
i think i might be confused.. lol, what options does an I not have that the IS does.. the power ratings are the same?

[eta]

Ignition timing and WOT fueling would be wrong.

[E30QC]

so, can i buy a chip destined for a 2.5 and run it>? or it plays to greatly with the mix?

[kenika65]

damn imeem.com deleted all my pics ill have to take another!

[884door]

but the i head has these already and is fed via the route for an eta, so the i will get the same press. of oil?- i was talking to my mechanic about finding my flywheel, and he mentioned an I wouldn't work because of the pick up points.. does this also then mean i should get an I tranny and bellhousing, because I'm planning on swapping in the entire IS harness, will my ref. point sensor and idle speed sensor no longer work? is it easier just to use my eta harness?

Your oil pressure will be fine, its an extra 3 2mm passages.

P.s. sorry for the pic quality, looked fine when I made it but I saved it as a bmp instead of a jpg so it looks like crap.

[E30QC]

do you have a pic of the fron crank sensor? i take it it doesn't go on the bottom end?

[kenika65]

ok as for the tranny issue, no you dont have to change it you just wont use the flywheel sensors because the 1.1/1.3 harness uses a front crank sensor instead.

I sold my sensors for good money..

And as for the e harness throw it in the trash!

[E30QC]

but the i head has these already and is fed via the route for an eta, so the i will get the same press. of oil?- i was talking to my mechanic about finding my flywheel, and he mentioned an I wouldn't work because of the pick up points.. does this also then mean i should get an I tranny and bellhousing, because I'm planning on swapping in the entire IS harness, will my ref. point sensor and idle speed sensor no longer work? is it easier just to use my eta harness?

[884door]

ok, and whats the extra oil channels? i thought the I head had special passage ways the E didn't? this sounds dumb, but as i have yet to see an I head from underneath.. i don't know, but i can go ahead and order my 2.5 rebuild kit, aka gasket set?

It's not from underneath, its oil passages on the the cam bearings, I'll try to find a pic and post it. Any machine shop should be able to drill them pretty cheap.

Edit: here ya go.

[E30QC]

ok, and whats the extra oil channels? i thought the I head had special passage ways the E didn't? this sounds dumb, but as i have yet to see an I head from underneath.. i don't know, but i can go ahead and order my 2.5 rebuild kit, aka gasket set?

[kenika65]

lol you will find that the i is mostly the only thing available after market, like the intake gaskets are always i gaskets so like he said they are all the same so if anything ask for i parts.

[phenryiv1]

okay, i buy an I and swap the first post parts.. but while refreshing it- do i buy an I or Es timing belt? the marks for timing line up? use the same reference sensors? which head gasket and blck gasket kit should i buy? i ask because i'll be doing this relatively soon, so i need to know what i have to go out and buy..

All interchangable.

[E30QC]

okay, i buy an I and swap the first post parts.. but while refreshing it- do i buy an I or Es timing belt? the marks for timing line up? use the same reference sensors? which head gasket and blck gasket kit should i buy? i ask because i'll be doing this relatively soon, so i need to know what i have to go out and buy..